CN106678189B - Double vibration damping type non-centering constant angular velocity universal coupling - Google Patents
Double vibration damping type non-centering constant angular velocity universal coupling Download PDFInfo
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- CN106678189B CN106678189B CN201710176458.6A CN201710176458A CN106678189B CN 106678189 B CN106678189 B CN 106678189B CN 201710176458 A CN201710176458 A CN 201710176458A CN 106678189 B CN106678189 B CN 106678189B
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- 230000008878 coupling Effects 0.000 title claims abstract description 67
- 238000010168 coupling process Methods 0.000 title claims abstract description 67
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 67
- 238000013016 damping Methods 0.000 title claims abstract description 36
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims abstract description 3
- 230000009467 reduction Effects 0.000 claims description 43
- 239000007787 solid Substances 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000035882 stress Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000005255 carburizing Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000032683 aging Effects 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The invention relates to a duplex vibration damping type non-centering constant angular velocity universal coupling, comprising: the device comprises an input shaft, two sets of universal couplings, an intermediate shaft, an output shaft and a fixed bearing; the fixed bearing is provided with two sets of fixed bearings which are respectively connected with one end of an input shaft and one end of an output shaft, the other end of the input shaft is connected with a universal coupler, a three fork rod of the universal coupler is connected with one end of an intermediate shaft through a spline, and the other end of the intermediate shaft is connected with a three fork rod of the other set of universal coupler through a spline; the transmission elements of the two sets of universal couplings adopt a sliding block assembly structure, and fluororubber elastic elements are arranged on the sliding block assemblies, so that the effects of buffering and absorbing vibration are achieved under the action of impact load; when a certain deflection angle exists between the input shaft and the output shaft, the connection and the mutual relation of the two sets of universal couplings and the intermediate shaft ensure the equiangular speed transmission and realize the transmission of large deflection angle and large torque, and the invention has the remarkable advantages of simple structure, low manufacturing cost, convenient installation, good synchronization performance and strong transmission capability.
Description
Technical Field
The invention relates to the field of duplex universal couplings, in particular to a duplex vibration-damping type non-centering constant-angular-speed universal coupling.
Background
In the mechanical transmission process, when a certain included angle exists between the axes of the driving shaft and the driven shaft, a universal coupling is required to transmit torque. The types of couplings used in the mechanical industry are many, and the more common types are cross-type universal couplings, ball cage universal couplings and the like; the cross axle of the cross axle universal coupling can generate additional dynamic load in transmission to cause impact, vibration and noise, so the cross axle universal coupling is not suitable for occasions with high speed and overlarge included angles between axles. Although the ball cage type universal coupling can realize the transmission of large torque and is driven at equal angular speed, the universal coupling has the defects of complex structure, high requirements on machining precision, high quenching hardness, high manufacturing cost, small bearing capacity, constrained application range and the like.
The invention aims to overcome the defects in the prior art of the constant-angle-speed universal coupling, and seeks to design and manufacture the double vibration-damping type non-centering constant-angle-speed universal coupling with simple and novel structure, low manufacturing cost, convenient installation, large bearing capacity and vibration absorption.
Disclosure of Invention
In order to achieve the aim of the invention, the invention provides the duplex vibration reduction type non-centering constant-angular-speed universal coupler which is simple and novel in structure, low in manufacturing cost, convenient to install and high in bearing capacity.
The technical scheme adopted by the invention is as follows:
the invention relates to a duplex vibration damping type non-centering constant-angular velocity universal coupling, which comprises the following components: the device comprises an input shaft, a universal coupling, an intermediate shaft, an output shaft and a fixed bearing; the two sets of universal couplings are arranged in a face-to-face installation mode, the two sets of fixed bearings are respectively connected with one end of the input shaft and one end of the output shaft, the other end of the input shaft is connected with one set of universal couplings, the three fork rods of the universal couplings are connected with one end of the intermediate shaft through splines, and the other end of the intermediate shaft is connected with the other set of three fork rods of the universal couplings through splines; the universal coupling includes: a slider assembly, a coupling body and a three-way fork; the sliding block assembly is provided with three sets, the sleeve of the coupling main body is of a cylindrical structure, and three sets of sliding grooves are formed in the wall of the sleeve and distributed at 120 degrees; the three sets of sliding block components are respectively arranged in the sliding grooves; the slider assembly includes: the device comprises a sliding block constraint layer, a fluororubber vibration reduction layer, a sliding block main body, a joint bearing and a sliding bearing; the sliding block main body is of a square structure, the joint bearing is arranged in the center of the sliding block main body, the inner ring of the joint bearing is tightly matched with the sliding bearing, and the sliding bearing is matched with the fork rod of the three fork rod to form a sliding pair; the fluororubber vibration reduction layer is symmetrically adhered to the sliding block main body and is fixed through the sliding block constraint layer, and the other surface of the sliding block constraint layer is in contact with the sliding groove; the fluororubber vibration reduction layer is firmly adhered between the sliding block main body and the sliding block constraint layer, and when the fluororubber vibration reduction layer stretches, the fluororubber vibration reduction layer is effectively prevented from stretching due to the adhesion of the sliding block constraint layer; in contrast, when the system vibrates and the fluororubber vibration reduction layer is compressed, the slider main body effectively prevents the fluororubber vibration reduction layer from being compressed, and when the rubber vibration reduction layer is prevented from being stretched and compressed, shearing deformation and stress are generated inside the fluororubber vibration reduction layer, so that more energy is dissipated by the material, the vibration absorption performance of the whole system is improved, and the vibration reduction and noise reduction functions of the system are improved.
Further, each of the three groups of sliding grooves is symmetrically arranged, carburized quenching treatment is carried out on the surface of the sliding groove to improve hardness, three grooves are formed in the sliding groove, a strip-shaped retainer is fixed in each groove, high-strength balls are embedded in the retainer, and a lubricant is added, so that sliding friction between the sliding block constraint layer and the sliding groove is changed into rolling friction, friction coefficients between the sliding block constraint layer and the sliding groove are reduced, abrasion is controlled, and transmission precision is improved.
Furthermore, the slide block constraint layer adopts a carburizing and quenching heat treatment mode, so that the surface hardness is improved; one surface of the slide block constraint layer is in adhesive contact with the fluororubber vibration reduction layer, and the other surface of the slide block constraint layer is in contact with the sliding groove to form a rolling sliding pair.
Furthermore, the universal coupling main body is made of 40Cr material and subjected to thermal refining, and the circular arc-shaped elastic diaphragm is fixedly arranged at the bottom of the universal coupling main body to prevent the intermediate shaft from striking the universal coupling main body in the movement process.
Further, the intermediate shaft includes: the shaft end check ring, the spline shaft, the hollow shaft, the solid shaft and the connecting shaft; the shaft end check ring is provided with two sets, the shaft end check ring is provided with two sections of elastic diaphragms, the spline shaft is in a prescribed connection with the outer end of the spline shaft in a mode of bolts and stop washers, the shaft end check ring plays a role in axially positioning the three-fork shaft of the universal coupling, and the elastic diaphragms of the shaft end check ring are matched with the circular arc-shaped elastic diaphragms of the universal coupling main body to play a role in buffering and absorbing vibration during abnormal operation; the spline shaft is provided with the three fork rod, the center of the three fork rod is provided with an internal spline which is matched with the spline shaft, so that the spline shaft has a guiding function and can realize the transmission of large torque; the hollow shaft is connected with the spline shaft into a whole, a cylindrical hole is formed in the hollow shaft, the cylindrical hole and the solid shaft are matched to form a piston structure, and the solid shaft slides in the hollow shaft, so that the length adjustment of the intermediate shaft is realized, and the axial displacement compensation of the duplex vibration reduction type non-centering constant-angular velocity universal coupling is met; the solid shaft is connected with the connecting shaft into a whole, and the other end of the connecting shaft is connected with the spline shaft into a whole.
Furthermore, when the input shaft and the output shaft rotate at deflection angles, the sliding block assembly moves along the sliding groove, the maximum deflection angle between the axis of the input shaft and the axis of the output shaft reaches 45 degrees, and the angle compensation and the radial displacement compensation of the double vibration reduction type non-centering constant-angle speed universal coupler are met.
Furthermore, when the double vibration reduction type non-centering constant-angular-speed universal coupler moves independently, the input shaft and the output shaft realize alternate driving according to the torque transmission direction.
Furthermore, the universal coupling solves the quasi-equiangular transmission characteristic of single universal coupling transmission through the face-to-face symmetrical installation mode of the intermediate shaft, and realizes the complete equiangular transmission when a deflection angle exists in the transmission system.
Furthermore, the fluororubber vibration damping layer is made of a graphene-fluororubber material, and the high strength and aging resistance of the fluororubber vibration damping layer are realized due to the molecular structure of graphene, so that the service life of the duplex vibration damping type non-centering constant-angular-speed universal coupler is prolonged.
Compared with the existing constant-angular-speed universal coupler, the ball cage has the advantages of being simple in structure, convenient to process and install, high in load transmission capacity, long in service life, low in manufacturing cost and the like, and the requirements on machining precision and heat treatment precision are eliminated structurally. The balls in the sliding grooves are made of bearing steel and are finished through finish machining, so that the transmission of larger torque is realized, larger load can be borne, meanwhile, the ball structure of the sliding grooves changes the friction mode into rolling friction, a good lubricating oil film can be formed, abrasion can be reduced, and the transmission precision is improved; the duplex structure effectively realizes the angular displacement compensation and radial displacement compensation of the transmission system, and simultaneously adopts a telescopic intermediate shaft structure to realize the axial displacement compensation; the slider assembly adopts the firm pasting in slider main part and slider restraint layer of fluororubber damping layer, and the effectual compression that prevents fluororubber damping layer of slider main part is when preventing rubber damping layer extension and compression, and fluororubber damping layer is inside to produce shear deformation and stress and make the material dissipate more energy, increases the shock absorption performance of entire system, improves the vibration damping function of making an uproar of system.
Drawings
FIG. 1 is a three-dimensional block diagram I of a duplex vibration damping type non-centering constant angular velocity universal joint according to the present invention;
FIG. 2 is a three-dimensional block diagram II of a duplex vibration damping type non-centering constant angular velocity universal joint according to the present invention;
FIG. 3 is a countershaft of a duplex vibration damping type non-centering constant angular velocity universal joint according to the present invention;
FIG. 4 is a coupling body of a duplex vibration damping non-centering constant angular velocity universal coupling of the present invention;
FIG. 5 is a slider assembly of the dual vibration damping non-centering constant angular velocity universal joint of the present invention;
FIG. 6 is a cross bar of a dual vibration damping non-centering constant angular velocity universal joint of the present invention;
FIG. 7 is a three-dimensional structure diagram of the duplex vibration damping type non-centering constant angular velocity universal coupling of the invention when the coupling deflects 45 DEG for transmission;
FIG. 8 is an enlarged view of a portion of a chute of the double vibration damping non-centering constant angular velocity universal joint of the present invention;
in the figure: the novel high-speed gear comprises a 1-input shaft, a 2-universal coupler, a 3-intermediate shaft, a 4-output shaft, a 5-fixed bearing, a 20-sliding block assembly, a 21-coupler body, a 22-three-fork rod, a 201-sliding block constraint layer, a 202-fluororubber vibration reduction layer, a 203-sliding block body, a 204-joint bearing, a 205-sliding bearing, a 211-sleeve, a 212-circular arc elastic membrane, a 213-sliding groove, a 31-shaft end check ring, a 32-spline shaft, a 33-hollow shaft, a 34-solid shaft and a 35-connecting shaft.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, a duplex vibration damping type non-centering constant angular velocity universal joint includes: an input shaft 1, a universal coupling 2, an intermediate shaft 3, an output shaft 4 and a fixed bearing 5; the two sets of universal couplings 2 are arranged in a face-to-face installation mode, the two sets of fixed bearings 5 are respectively connected with one end of the input shaft 1 and one end of the output shaft 4, the other end of the input shaft 1 is connected with one set of universal couplings 2, a three-fork rod 22 of each universal coupling 2 is connected with one end of the corresponding intermediate shaft 3 through a spline, and the other end of the corresponding intermediate shaft 3 is connected with the other set of three-fork rod 22 of each universal coupling 2 through a spline; the universal joint 2 includes: a slider assembly 20, a coupling body 21 and a trifurcated lever 22; the sliding block assembly 20 is provided with three sets, the sleeve 211 of the coupling main body 21 is of a cylindrical structure, and three sets of sliding grooves 213 are formed in the wall of the sleeve 211 and distributed at 120 degrees; three sets of the sliding block assemblies 20 are respectively installed in the sliding grooves 213; the slider assembly 20 includes: a slider constraining layer 201, a fluororubber vibration damping layer 202, a slider body 203, a knuckle bearing 204, and a slide bearing 205; the slider body 203 has a square structure, the knuckle bearing 204 is installed at the center of the slider body 203, the inner ring of the knuckle bearing 204 is tightly matched with the sliding bearing 205, and the sliding bearing 205 is matched with the fork rod of the three-fork rod 22 to form a sliding pair; the fluororubber vibration reduction layer 202 is symmetrically adhered to the slider main body 203 and is fixed by the slider constraint layer 201, and the other surface of the slider constraint layer 201 is in contact with the sliding groove 213; each of the three groups of sliding grooves 213 is symmetrically arranged, carburized quenching treatment is performed on the surface of the sliding groove 213 to improve hardness, three grooves are formed in the sliding groove 213, a strip-shaped retainer is fixed in each groove, high-strength balls are embedded in the retainer, and a lubricant is added to change sliding friction between the sliding block constraint layer 201 and the sliding groove 213 into rolling friction, so that friction coefficients between the sliding block constraint layer 201 and the sliding groove 213 are reduced, abrasion is controlled, and transmission precision is improved; the intermediate shaft 3 includes: shaft end retainer ring 31, spline shaft 32, hollow shaft 33, solid shaft 34 and connecting shaft 35; the shaft end check ring 31 is provided with two sets, the shaft end check ring 31 is provided with an elastic membrane, the spline shaft 32 is provided with two sections, the shaft end check ring 31 is in specified connection with the outer end of the spline shaft 32 in a mode of bolts and stop washers, the function of axially positioning the three-fork rod 22 of the universal coupler 2 is achieved, and the elastic membrane of the shaft end check ring 31 is matched with the circular arc-shaped elastic membrane of the universal coupler main body 21 to achieve the effect of buffering and absorbing vibration during abnormal operation; the spline shaft 32 is provided with the three-fork rod 22, and the center of the three-fork rod 22 is provided with an internal spline which is matched with the spline shaft 32, so that the guide function is realized and the transmission of large torque can be realized; the hollow shaft 33 is connected with the spline shaft 32 into a whole, a cylindrical hole is formed in the hollow shaft 33, the cylindrical hole and the solid shaft 34 are matched to form a piston structure, and the solid shaft 34 slides in the hollow shaft 33, so that the length adjustment of the intermediate shaft 3 is realized, and the axial displacement compensation of the duplex vibration reduction type non-centering constant-angular velocity universal coupling is met; the solid shaft 34 is integrally connected to the connecting shaft 35, and the other end of the connecting shaft 35 is integrally connected to the spline shaft 32.
As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the working method of the duplex vibration damping type non-centering constant-angular velocity universal coupling specifically comprises the following steps:
the input shaft 1 applies torque and motion to drive the universal coupling 2 to rotate, power is transmitted to the intermediate shaft 3 through the three-fork rod 22, the intermediate shaft 3 transmits the power to the other set of universal coupling 2 and then to the output shaft 4, and the constant-angle speed transmission is realized; when a deflection angle exists between the input shaft 1 and the output shaft 4, the sliding block assembly slides in the sliding groove 213 of the universal coupler 2, meanwhile, power is transmitted to the three-fork rod 22, and the power is transmitted to the output shaft 4 at equal angular speed after passing through the intermediate shaft 3, so that the angular displacement compensation and the radial displacement compensation of a transmission system are effectively realized, meanwhile, the intermediate shaft 2 adopts a telescopic structure, the axial displacement compensation is also realized, and the maximum deflection angle between the input shaft 1 and the output shaft 4 reaches 45 degrees; when the whole system is subjected to impact load, the sliding block assembly slides in the sliding groove 213 of the universal coupling 2 at the same time, the fluororubber vibration reduction layer 202 is firmly adhered between the sliding block main body 203 and the sliding block constraint layer 201, and when the fluororubber vibration reduction layer 202 stretches due to the adhesion of the sliding block constraint layer 201, the stretching of the fluororubber vibration reduction layer 202 is effectively prevented; in contrast, when the system vibrates the fluororubber vibration reduction layer 202 to compress, the slider main body 203 effectively prevents the fluororubber vibration reduction layer 202 from compressing, and simultaneously prevents the expansion and compression of the fluororubber vibration reduction layer, and simultaneously, the interior of the fluororubber vibration reduction layer 202 generates shearing deformation and stress to enable the material to dissipate more energy, so that the vibration absorption performance of the whole system is increased, and the vibration reduction and noise reduction functions of the system are improved; when the double vibration damping type non-centering constant-angular-speed universal coupler moves independently, the input shaft 1 and the output shaft 4 realize alternate driving according to the torque transmission direction.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The utility model provides a duplex damping formula non-centering constant angular velocity universal joint which characterized in that: comprising the following steps: an input shaft (1), a universal coupling (2), an intermediate shaft (3), an output shaft (4) and a fixed bearing (5); the two sets of universal couplings (2) are arranged in a face-to-face installation mode, the two sets of fixed bearings (5) are respectively connected with one end of the input shaft (1) and one end of the output shaft (4), one set of universal couplings (2) is connected with the other end of the input shaft (1), a three-fork rod (22) of each universal coupling (2) is connected with one end of the middle shaft (3) through a spline, and the other end of the middle shaft (3) is connected with the other set of three-fork rod (22) of each universal coupling (2) through a spline; the universal coupling (2) comprises: a slider assembly (20), a coupling body (21) and a three-fork lever (22); the sliding block assembly (20) is provided with three sets, the sleeve (211) of the coupling main body (21) is of a cylindrical structure, and three groups of sliding grooves (213) are formed in the wall of the sleeve (211) and distributed at 120 degrees; three sets of sliding block assemblies (20) are respectively arranged in the sliding grooves (213); the slider assembly (20) includes: a slider restraint layer (201), a fluororubber vibration reduction layer (202), a slider body (203), a knuckle bearing (204) and a sliding bearing (205); the sliding block main body (203) is of a square structure, the joint bearing (204) is arranged in the center of the sliding block main body (203), the inner ring of the joint bearing (204) is tightly matched with the sliding bearing (205), and the sliding bearing (205) is matched with a fork rod of the three fork rod (22) to form a sliding pair; the fluororubber vibration reduction layer (202) is symmetrically adhered to the sliding block main body (203) and is fixed through the sliding block constraint layer (201), and the other surface of the sliding block constraint layer (201) is in contact with the sliding groove (213); the fluororubber vibration reduction layer (202) is firmly adhered between the slider main body (203) and the slider constraint layer (201), and when the fluororubber vibration reduction layer (202) stretches due to the adhesion of the slider constraint layer (201), the fluororubber vibration reduction layer (202) is effectively prevented from stretching; in contrast, when the system vibrates and the fluororubber vibration reduction layer (202) is compressed, the slider main body (203) effectively prevents the fluororubber vibration reduction layer (202) from being compressed, and when the rubber vibration reduction layer is prevented from being stretched and compressed, the fluororubber vibration reduction layer (202) generates shearing deformation and stress to enable the material to dissipate more energy, so that the vibration absorption performance of the whole system is improved, and the vibration reduction and noise reduction functions of the system are improved: each of the three groups of sliding grooves (213) is symmetrically arranged, the surface of the sliding groove (213) is subjected to carburizing and quenching treatment to improve the hardness, the sliding groove (213) is provided with three grooves, a strip-shaped retainer is fixed in each groove, high-strength balls are embedded on the retainer, and a lubricant is added, so that the sliding friction between the sliding block constraint layer (201) and the sliding groove (213) is changed into rolling friction, the friction coefficient between the sliding block constraint layer (201) and the sliding groove (213) is reduced, the abrasion is controlled, and the transmission precision is improved; the intermediate shaft (3) comprises: the shaft end check ring (31), the spline shaft (32), the hollow shaft (33), the solid shaft (34) and the connecting shaft (35); the shaft end check ring (31) is provided with two sets, the shaft end check ring (31) is provided with an elastic diaphragm, the spline shaft (32) is provided with two sections, the shaft end check ring (31) is in prescribed connection with the outer end of the spline shaft (32) in a mode of adding a stop washer through a bolt, the function of axially positioning a three-fork rod (22) of the universal coupler (2) is achieved, and the elastic diaphragm of the shaft end check ring (31) is matched with the circular arc-shaped elastic diaphragm of the coupler main body (21) to achieve the effect of buffering and absorbing vibration during abnormal operation; the spline shaft (32) is provided with the three-fork rod (22), and the center of the three-fork rod (22) is provided with an internal spline which is matched with the spline shaft (32), so that the guide function is realized and the transmission of large torque can be realized; the hollow shaft (33) is connected with the spline shaft (32) into a whole, a cylindrical hole is formed in the hollow shaft (33), the cylindrical hole and the solid shaft (34) are matched to form a piston structure, sliding of the solid shaft (34) in the hollow shaft (33) is achieved, length adjustment of the intermediate shaft (3) is achieved, and axial displacement compensation of the double vibration reduction type non-centering constant-angular velocity universal coupling is met; the solid shaft (34) is integrally connected with the connecting shaft (35), and the other end of the connecting shaft (35) is integrally connected with the spline shaft (32).
2. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: the slide block constraint layer (201) adopts a carburizing and quenching heat treatment mode, so that the surface hardness is improved; the sliding block restraining layer (201) is contacted with the fluororubber vibration reduction layer (202) in an adhering way, and is contacted with the sliding groove (213) to form a rolling sliding pair.
3. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: the universal coupling main body (21) is made of 40Cr material and subjected to thermal refining, and an arc-shaped elastic diaphragm (212) is fixedly arranged at the bottom of the universal coupling main body (21) to prevent the intermediate shaft (3) from impacting the universal coupling main body (21) in the moving process.
4. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: when the input shaft (1) and the output shaft (4) rotate at a deflection angle, the sliding block assembly (20) moves along the sliding groove (213), the maximum deflection angle of the axis of the input shaft and the axis of the output shaft reaches 45 degrees, and the angle compensation and the radial displacement compensation of the double vibration reduction type non-centering constant-angle speed universal coupling are met.
5. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: when the double vibration reduction type non-centering constant-angular-speed universal coupler moves independently, the input shaft (1) and the output shaft (4) are driven alternately with each other according to the torque transmission direction.
6. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: the universal coupling (2) solves the problem of the quasi-equiangular speed transmission characteristic of single universal coupling (2) transmission through the face-to-face symmetrical installation mode of the intermediate shaft (3), and realizes the complete equiangular speed transmission when a deflection angle exists in a transmission system.
7. The duplex vibration damping non-centering constant angular velocity universal joint as claimed in claim 1, wherein: the fluororubber vibration damping layer (202) is made of a graphene-fluororubber material, and due to the molecular structure of graphene, the fluororubber vibration damping layer (202) has high strength and aging resistance, and the service life of the duplex vibration damping type non-centering constant-angular velocity universal coupling is prolonged.
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| CN201710176458.6A CN106678189B (en) | 2017-03-23 | 2017-03-23 | Double vibration damping type non-centering constant angular velocity universal coupling |
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| CN201710176458.6A CN106678189B (en) | 2017-03-23 | 2017-03-23 | Double vibration damping type non-centering constant angular velocity universal coupling |
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| CN106678189B true CN106678189B (en) | 2023-11-21 |
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| CN109780078B (en) * | 2019-03-20 | 2024-04-05 | 无锡创明传动工程有限公司 | Novel universal coupling |
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| CN201661626U (en) * | 2010-04-15 | 2010-12-01 | 湖北天力传动设备有限公司 | Universal joint |
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| CN202867607U (en) * | 2012-09-05 | 2013-04-10 | 镇江宇航重工机械有限公司 | Ball spline type ball cage constant speed universal coupling |
| CN103671592A (en) * | 2013-12-03 | 2014-03-26 | 李明香 | Universal coupling with extensible cross shaft |
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