Flexible coupling
Technical field
The utility model relates to a kind of flexible coupling, relates in particular to a kind of flexible coupling that is used for mechanical transmission fields.
Background technique
The symbolic characteristic of tradition Hooks coupling universal coupling is " a cross joint ", and " cross joint " relies on 4 needle bearings that are distributed on 4 orientation to realize positive and negative rotation alternately in the work, makes coupling have sizable angular displacement compensation and radial displacement compensation.Problem is that Hooks coupling universal coupling is when doing big angle swing, the transmission shaft that is in two " cross joints " centre must cooperate does fore and aft motion, the huge surface friction drag of splined surfaces makes the fore and aft motion of coupling become very difficult in the dynamic retractility, and the phenomenon that often occurs getting stuck causes serious accident.And if replace the Hooks coupling universal coupling of spline telescopic shaft with the Rzeppa type telescopic shaft, its manufacture cost difficulty is accepted by users.
With " wire soft shaft " replace Hooks coupling universal coupling have simple in structure, light and handy, exempt to lubricate, series of advantages such as buffering, highly reliable, low cost by force.The crossed axis angle of wire soft shaft is big, is that tradition joint Hooks coupling universal coupling is too far behind to catch up, so its control system that is widely used in advanced equipments of high grade and precision is even on " hot-end component " of aeroengine.Yet the connectivity problem between " wire soft shaft " and the flange is not properly settled, and is that serious obstruction " wire soft shaft " enlarges the outstanding reason that is applied to high speed, heave-load device flexible coupling.
Hard flank of tooth rack barrel coupling and flexible disc, sheet coupling are considered to suitable high speed, heavily loaded applications, yet the application of hard flank of tooth rack barrel coupling depends on the cooperation of thin oil circulating lubrication cooling system, leave the circulating lubrication cooling system, high speed or very high speediness condition lower gear coupling exist flank of tooth gummed dangerous.Comprise the thin Oil Lubricating System cost, the price of hard flank of tooth rack barrel coupling can exceed ten several times of common soft tooth flank gear coupling.In addition, " zero buffering " ability remains the high price fatal funeral of flank of tooth rack barrel coupling firmly.
Traditional diaphragm coupling is considered to replace hard flank of tooth rack barrel coupling with light and handy, non-lubricating advantage.Yet constantly expose a series of contradictions of traditional diaphragm coupling in actual applications: the contradiction of contention " the micro strain amount that material is limited " is very outstanding between the bearing capacity of coupling and the displacement compensation capability; The contradiction of contention " the micro strain amount that material is limited " is also very outstanding between the radial displacement compensation of diaphragm coupling and the axial displacement compensation.
Hole count on the ring film is directly proportional with bearing capacity, and be inversely proportional to compensation ability, this implacable contradiction of bearing capacity and compensation ability, cause the ring film coupling of high-speed overload that " tile kilning " accident takes place in user's The field repeatedly, this makes that the coupling artificer is in a dilemma, is stymied by.
Summary of the invention
The utility model purpose provides a kind of flexible coupling, its core component is to be embedded on the mandrel layer by layer by the multi-layer helical elastic external member to constitute, have that size is compact especially, bearing capacity is big, compensation ability greatly, cushion by force, exempt to lubricate, high temperature resistant, on-the-spot mounting or dismounting are convenient, can bold and resolute work the advantage of economy and durability again.
The technical solution of the utility model is: a kind of flexible coupling, comprise the intermediate portion between two flanges, two flanges and the interlock dish of adpting flange and intermediate portion, described intermediate portion comprises mandrel and is coated on the outer nested layer by layer multi-layer helical elastic external member of mandrel.
The further technological scheme of the utility model is:
A kind of flexible coupling comprises the intermediate portion between two flanges, two flanges and the interlock dish of adpting flange and intermediate portion, and described intermediate portion comprises mandrel and is coated on the outer nested layer by layer multi-layer helical elastic external member of mandrel; The Hand of spiral of described multi-layer helical elastic external member adjacent two layers is opposite; From outward appearance to inner essence, has tangible radial clearance between the even level spiral elasticity external member that all odd-level spiral elasticity external members are adjacent with its internal layer; Described multi-layer helical elastic external member can be multi-head spiral bourdon tube group, also can be the multi-head spiral cluster spring, or is the multi-deck combined of multi-head spiral bourdon tube and multi-head spiral spring; Each left hand screw bourdon tube of described multi-head spiral bourdon tube and dextrorotation bourdon tube are formed the composite helical spring pipe, be interference fit between the cylindrical junction plane at described left hand screw bourdon tube and dextrorotation bourdon tube two ends, has tangible radial clearance between the stage casing beyond the junction plane, be distributed with several junction of the edges of two sheets of paper screw holes and junction of the edges of two sheets of paper positioning pin hole on the interference fit face at two ends, the interlock of composite helical spring pipe and both sides is coiled when combined, with junction of the edges of two sheets of paper locating stud location, fastening with junction of the edges of two sheets of paper screw; When described multi-head spiral spring is in outermost surface, after the steel wire head at multi-head spiral spring head and the tail two ends becomes spoke shpae outwards to turn down 90 degree, be fastened in the chuck of its outer ring, described chuck and interlock dish are located with locating stud, and fastening with screw; When described multi-head spiral spring is in internal layer, the steel wire head at its head and the tail two ends and the parallel axes of cylindrically coiled spring, and pass matching hole corresponding on the interlock dish, and fastening with nut; Described multi-layer helical elastic external member also can comprise metal flexible conduit, and it is positioned at the outermost surface of multi-layer helical elastic external member; Described metal flexible conduit is the heavy wall seamless metal pipe, has the raceway groove of identical depth of cut on it every same distance, and described raceway groove is perpendicular to axis, and each raceway groove radially turns over 90 degree clockwise with respect to its previous raceway groove; Described mandrel can be the alloyed steel elastic drive shaft, can be the standard wire soft shaft, can be cylindrically coiled spring, also can be hollowly, and its medium alloy steel elastic drive shaft and standard wire soft shaft match with the interlock dish of both sides with square key or other key Connecting format.
The technological scheme that the utility model is more detailed is: a kind of flexible coupling, comprise the intermediate portion between two flanges, two flanges and the interlock dish of adpting flange and intermediate portion, described intermediate portion comprises mandrel and is coated on the outer nested layer by layer multi-layer helical elastic external member of mandrel; The Hand of spiral of described multi-layer helical elastic external member adjacent two layers is opposite; From outward appearance to inner essence, has tangible radial clearance between the even level spiral elasticity external member that all odd-level spiral elasticity external members are adjacent with its internal layer; Described multi-layer helical elastic external member can be multi-head spiral bourdon tube group, also can be the multi-head spiral cluster spring, or is the multi-deck combined of multi-head spiral bourdon tube and multi-head spiral spring; Each left hand screw bourdon tube of described multi-head spiral bourdon tube and dextrorotation bourdon tube are formed the composite helical spring pipe, be interference fit between the cylindrical junction plane at described left hand screw bourdon tube and dextrorotation bourdon tube two ends, has tangible radial clearance between the stage casing beyond the junction plane, on the interference fit face at two ends, be distributed with several junction of the edges of two sheets of paper screw holes and junction of the edges of two sheets of paper positioning pin hole, the interlock of composite helical spring pipe and both sides is coiled when combined, and is with junction of the edges of two sheets of paper locating stud location, fastening with junction of the edges of two sheets of paper screw; When described multi-head spiral spring is in outermost surface, after the steel wire head at multi-head spiral spring head and the tail two ends becomes spoke shpae outwards to turn down 90 degree, be fastened in the chuck of its outer ring, described chuck and interlock dish are located with locating stud, and fastening with screw; When described multi-head spiral spring was in internal layer, the steel wire head at its head and the tail two ends was parallel with axle and pass matching hole corresponding on the interlock dish, and fastening with nut; Described multi-layer helical elastic external member also can comprise metal flexible conduit, and it is positioned at the outermost surface of multi-layer helical elastic external member; Described metal flexible conduit is the heavy wall seamless metal pipe, has the raceway groove of identical depth of cut on it every same distance, and described raceway groove is perpendicular to axis, and each raceway groove radially turns over 90 degree clockwise with respect to its previous raceway groove; Described mandrel can be the alloyed steel elastic drive shaft, can be the standard wire soft shaft, can be cylindrically coiled spring, also can be hollowly, and its medium alloy steel elastic drive shaft and standard wire soft shaft match with the interlock dish of both sides with square key or other key Connecting format; Described interlock dish is a porous transfer panel, and it is provided with rectangle keyhole, positioning pin hole, screw hole and bolt hole; The installation limit of described flange is provided with needle valve oiling lubricating cup, and described interlock dish is provided with oil storage chamber and oil guiding hole; Described flexible coupling also is provided with overcoat in the periphery of multi-layer helical elastic external member, and it is metal bellows or the sealer with assembled that is formed by stacking by compound seal ring, seal ring and wavy spring.
The utility model advantage is:
1. the utility model is because from outward appearance to inner essence whole elastic elements in the intermediate portion, all participate in the moment of torsion transmission of coupling bar none, space availability ratio is the highest, the radial dimension minimum, and the tangential velocity of coupling, weight, rotary inertia are all much smaller than traditional main flow coupling under the high-speed condition; Bearing capacity, torsional oscillation damping capacity, resiliency, axial stretching is accessible, compensation ability is all much better than than traditional main flow coupling; And exempt to lubricate, self lubricity, heat-resisting quantity, dynamic balance, freely assemble aspects such as maintenance and Economy and all be better than traditional flexible coupling comprehensively.
2. when the outermost surface of the utility model multi-layer helical elastic external member is metal flexible conduit, its transmission accuracy is very high, size is compact especially, weight, rotary inertia, tangential velocity are little, and the bearing capacity under the synchronism of transmission, self lubricity, the high-speed condition, compensation ability are better than dish, sheet flexible coupling comprehensively.
3. when the outermost surface of the utility model multi-layer helical elastic external member is the multi-head spiral spring, compare with traditional cross axle ten thousand coupling, its weight, rotary inertia are all much smaller, and bearing capacity, torsional oscillation damping capacity, resiliency, axial elasticity are flexible, angle swing, radial compensation, freely assemble maintenance and Economy etc. and be better than traditional cross-axle universal shaft coupling comprehensively.
Description of drawings
Fig. 1 is the flexible coupling first example structure schematic representation;
Fig. 2 is the flexible coupling second example structure schematic representation;
Fig. 3 is flexible coupling the 3rd an example structure schematic representation;
Fig. 4 is flexible coupling the 4th embodiment's part-structure schematic representation;
Fig. 5 is a composite helical spring pipe schematic representation;
Fig. 6 is a left hand screw bourdon tube schematic representation;
Fig. 7 is a right-hand screw bourdon tube schematic representation;
Fig. 8 is two ends spoke-type multi-head spiral spring schematic representation;
Fig. 9 is two ends spoke-type multi-head spiral spring side views;
Figure 10 is a mesosphere multi-head spiral spring schematic representation;
Figure 11 is a mesosphere multi-head spiral spring side view;
Figure 12 is the metal flexible conduit structural representation;
Figure 13 is a metal flexible conduit structure sectional view;
Figure 14 is an alloyed steel elastic drive shaft structural representation;
Wherein: 1 flange; 2 intermediate portions; 3 interlock dishes; 4 mandrels; 5 multi-layer helical elastic external members; 6 multi-head spiral bourdon tubes; 7 multi-head spiral springs; 8 metal flexible conduits; 9 chucks; 10 locating studs; 11 screws; 12 nuts; 13 overcoats; 14 spring washers; 15 horizontal keys; 16 lock washers; 17 bolts; 18 pressure springs; 31 oil storage chambers; 32 oil guiding holes; 41 alloyed steel elastic drive shafts; 42 standard wire soft shafts; 43 cylindrically coiled springs; 44 square keys; 61 left hand screw bourdon tubes; 62 dextrorotation bourdon tubes; 63 composite helical spring pipes; 81 raceway grooves; 101 lubricating cups; 631 junction of the edges of two sheets of paper screws; 632 junction of the edges of two sheets of paper locating studs; 633 junction of the edges of two sheets of paper screw holes; 634 junction of the edges of two sheets of paper positioning pin holes.
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: extremely shown in Figure 14 as Fig. 1, a kind of flexible coupling, the interlock dish 3 that comprises intermediate portion 2, adpting flange 1 and intermediate portion 2 between two flanges 1, two flanges 1, and being used for torsion pass, connection, fixing, spacing, locking spring washer 14, horizontal key 15, lock washer 16, bolt 17 etc., described intermediate portion 2 comprises mandrel 4 and is coated on mandrel 4 outer nested layer by layer multi-layer helical elastic external members 5.
The Hand of spiral of described multi-layer helical elastic external member 5 adjacent two layers is opposite; From outward appearance to inner essence, has tangible radial clearance between the even level spiral elasticity external member that all odd-level spiral elasticity external members are adjacent with its internal layer.
Described multi-layer helical elastic external member 5 can be 6 groups of multi-head spiral bourdon tubes, also can be 7 groups on multi-head spiral spring, or is the multi-deck combined of multi-head spiral bourdon tube 6 and multi-head spiral spring 7.
Described multi-head spiral bourdon tube 6 each left hand screw bourdon tube 61 and dextrorotation bourdon tube 62 are formed composite helical spring pipe 63, be interference fit between the cylindrical junction plane at described left hand screw bourdon tube 61 and dextrorotation bourdon tube 62 two ends, has tangible radial clearance between the stage casing beyond the junction plane, be distributed with several and junction of the edges of two sheets of paper screw 631 and junction of the edges of two sheets of paper locating stud 632 corresponding junction of the edges of two sheets of paper screw hole 633 and junction of the edges of two sheets of paper positioning pin holes 634 on the interference fit face at two ends, composite helical spring pipe 63 and the interlock of both sides coil 3 when combined, with junction of the edges of two sheets of paper locating stud 632 location, fastening with junction of the edges of two sheets of paper screw 631.
When described multi-head spiral spring 7 was in outermost surface, the steel wire head at multi-head spiral spring 7 head and the tail two ends became spoke shpae outwards to be fastened in the chuck 9 of its outer ring behind turnover 90 degree, and described chuck 9 and interlock dish 3 be with locating stud 10 location, and fastening with screw 11; When described multi-head spiral spring 7 is in internal layer, the steel wire head at its head and the tail two ends and the parallel axes of cylindrically coiled spring, and pass matching hole corresponding on the interlock dish 3, and fastening with nut 12.
Described multi-layer helical elastic external member 5 also can comprise metal flexible conduit 8, and it is positioned at the outermost surface of multi-layer helical elastic external member 5.
Described metal flexible conduit 8 is the heavy wall seamless metal pipe, has the raceway groove 81 of identical depth of cut on it every same distance, and described raceway groove 81 is perpendicular to axis, and each raceway groove radially turns over 90 degree clockwise with respect to its previous raceway groove.
Described mandrel 4 can be alloyed steel elastic drive shaft 41, can be standard wire soft shaft 42, can be cylindrically coiled spring 43, also can be hollow, its medium alloy steel elastic drive shaft 41 and standard wire soft shaft 42 match with the interlock dish 3 of both sides with square key 44 or other key Connecting format, the periphery of square key 44 also can sheathed pressure spring 18.
Described interlock dish 3 is a porous transfer panel, it is provided with rectangle keyhole, positioning pin hole, screw hole and bolt hole etc., interlock dish 3 has compiled the moment that passes on each elastic element by a series of hole on it, and locating stud and the bolt that coils on 3 peripheries by interlock passes to adjacent flange 1 again.
The installation limit of described flange 1 is provided with needle valve oiling lubricating cup 101, and described interlock dish 3 is provided with oil storage chamber 31 and oil guiding hole 32.
Described flexible coupling also is provided with overcoat 13 in the periphery of multi-layer helical elastic external member 5, and it is metal bellows or the sealer with assembled that is formed by stacking by compound seal ring, seal ring and wavy spring.
In most cases, described flexible coupling need not to lubricate, but when coupling be used for universal transmission, long-neck bigger than again, when requiring coupling that big angle, radial displacement compensation rate are provided, can employ the ointment selflubricating facility that is arranged in the coupling---inject ointment with needle valve oiling lubricating cup 101 to oil storage chamber 31, ointment provides lubricating condition for the elastic component of coupling through oil guiding hole 32.In order to keep this lubricating condition, be necessary to be provided with hermetically sealed case 13, as metal bellows or sealer with assembled
First embodiment:
As shown in Figure 1, the intermediate portion 2 of described flexible coupling respectively by alloyed steel elastic drive shaft 41 and the three layers of multi-head spiral spring 7 and the two-layer multi-head spiral bourdon tube 6 that successively coat its periphery successively form, helical elastic tube 6 outsides also are provided with metal bellows, described alloyed steel elastic drive shaft 41 is connected with interlock dish 3 with square key 44, and square key 44 peripheries also are provided with pressure spring 18.
The flexible coupling of this type is for playing flexible coupling, its characteristics are because from outward appearance to inner essence whole elastic elements in the elastic component, all participate in the moment of torsion transmission of coupling bar none, space availability ratio is the highest, the radial dimension minimum, the tangential velocity of coupling, weight, rotary inertia are all much smaller than traditional main flow coupling under the high-speed condition; Bearing capacity, torsional oscillation damping capacity, resiliency, axial stretching is accessible, compensation ability is all much better than than traditional main flow coupling; And exempt from lubricated self lubricity, heat-resisting quantity, dynamic balance, freely assemble aspects such as maintenance and Economy and all be better than traditional flexible coupling comprehensively.
Second embodiment:
As shown in Figure 2, the intermediate portion 2 of described flexible coupling is respectively by standard wire soft shaft 42 and successively coat the two-layer multi-head spiral spring 7 of its periphery, two-layer multi-head spiral bourdon tube 6 and layer of metal flexible tube 8 successively and form; Described standard wire soft shaft 42 is connected with interlock dish 3 with square key 44, and square key 44 peripheries also are provided with pressure spring 18.
The flexible coupling of this type has kept the outstanding advantage of coupling described in first embodiment substantially, different is its resiliency is relatively poor and transmission accuracy is very high, size is compact especially, weight, rotary inertia, tangential velocity are much smaller, and the bearing capacity under the synchronism of transmission, self lubricity, the high-speed condition, compensation ability are better than dish, sheet flexible coupling comprehensively.
The 3rd embodiment:
As shown in Figure 3, the intermediate portion 2 of described flexible coupling respectively by cylindrically coiled spring 43 and five layers of multi-head spiral spring 7 that successively coat its periphery successively form, after becoming the outside turnover 90 of spoke shpae to spend, the steel wire head at wherein outermost multi-head spiral spring 7 head and the tail two ends is fastened in the chuck 9 of its outer ring, chuck 9 is located with locating stud 10 with interlock dish 3, and fastening with screw 11; Most peripheral at whole intermediate portion 2 also is provided with the sealer with assembled that is formed by stacking by compound seal ring, seal ring and wavy spring.
The flexible coupling of this type is the elasticity Hooks coupling universal coupling, it is except the outstanding advantage that has kept coupling described in first embodiment, because it will adapt to the needs of Hooks coupling universal coupling, have to strengthen the at double axial dimension of elastic component integral body, make the numerical value of critical speed of rotation descend, can not be in the very high speediness applications; Yet the advantage of comparing with traditional cross axle ten thousand coupling that do not possess resiliency is very outstanding: weight, rotary inertia are all much smaller, and bearing capacity, torsional oscillation damping capacity, resiliency, axial stretching, angle swing, radial compensation, freely assemble maintenance and Economy etc. and be better than traditional cross-axle universal shaft coupling comprehensively.
The 4th embodiment:
As shown in Figure 4, the intermediate portion 2 of described flexible coupling respectively by mandrel 4 and four layers of multi-head spiral bourdon tube 6 that successively coat its periphery successively form, the intermediate portion of its mandrel 4 is a cylindrically coiled spring 43, cylindrically coiled spring 43 two ends are alloyed steel elastic drive shaft 41, mandrel 4 is connected with interlock dish 3 with square key 44, and square key 44 peripheries also are provided with pressure spring 18.
The flexible coupling of this type is called elastic coupling flexible coupling, and it has the characteristics of flexible coupling described in first embodiment.
In sum, the utility model core component is to be embedded in layer by layer mandrel by the multi-layer helical elastic external member Upper formation, have that size is especially compact, bearing capacity is big, compensation ability greatly, cushion by force, exempt to lubricate, High temperature resistant, on-the-spot mounting or dismounting convenience, the bold and resolute work of energy is the advantage of economy and durability again.