A kind of special roof structure end face tooth type flexible couplingTechnical field
The present invention relates to the shaft coupling technical fields of conveying rotary motion, and in particular to a kind of special roof structure end-toothType flexible coupling.
Background technology
The field of fluid machinery such as pump, compressor, wind turbine, the type of attachment of mechanical side rotor shaft and motor side rotor shaftThe connection of generally use rigid flange disk shaft coupling, the connection of flexible metal disk diaphragm coupling and flexible internal-external gear engage shaft couplingDevice connects.
One, rigid flange shaft coupling：The type of attachment of two shafts is rigid connection, and two shafts need whole bore when assemblingHole is simultaneously finish reamed in hole, heavy parts processing difficulties, and connection need to use special bolt, bolt to transmit torque and bear shearing force, bending moment,Vulnerable, when two shafts when angular deviation, radial displacement deviation there are that can not compensate, assembly difficulty is big and troublesome, and advantage is canTransmitting large torque and the transmission that can guarantee torque under transient state.
Two, flexible metal disk diaphragm coupling：The type of attachment of two shafts is flexible connection, when that there are angles is inclined for two shaftsIt can be compensated by diaphragm when difference, radial displacement deviation, small axle diameter, small torque occasion are generally used in, the disadvantage is that cannot passIt passs large torque, metal dish and two shafts and axial play is be easy to cause using key connection.
Three, flexible internal-external gear engagement coupling：The type of attachment of two shafts is flexible connection, when there are angles for two shaftsIt can be compensated by internal-external gear gap when deviation, radial displacement deviation, the disadvantage is that requiring the rotor of mechanical side and motor sideComponent is statically determinate structure, i.e., at least 2 journal bearings is used to support rotor per side, needs special chamber storage oil lubricationMeshed gears, complicated, assembly work is cumbersome, and time-consuming.
It is therefore desirable to optimize pump side rotor shaft and motor side shaft type of attachment, side rotor statically determinate structure is solvedConnection with the rotor part of the non-statically determinate structure of other side rotor and centering problem, while assembly work can be simplified again, shorten dressWith the time, in particular job region, such as nuclear power station can be significantly reduced maintenance personnel by the irradiated time.
Invention content
The purpose of the present invention is to provide a kind of special roof structure end face tooth type flexible couplings, using semi-rigid knotStructure is compensated by membrane configuration, meets mechanical side and motor when two shafts are there are when angular deviation, radial displacement deviationThe rotor part of side is non-statically determinate structure, and unilateral using a journal bearing support, meanwhile, each part is all made of rigid endThe connection of face toothing, can transmitting large torque, reassembled after disintegration dynamically balanced reproducible, centering reproducible.
In order to achieve the above object, the invention is realized by the following technical scheme：
A kind of special roof structure end face tooth type flexible coupling, one end connect pump shaft, and the other end connects motor shaft,It is characterized in, which includes：
Pump shaft side half a coupler, one end are connect with pump shaft；
Intermediate separation coupling, one end are connect with the other end of half shaft coupling of pump shaft side；
Motor side half a coupler, one end are connect with the other end of intermediate separation coupling；
Thrust collar is arranged in the other end of intermediate separation coupling, and the head of thrust collar is spherical shape；
Baffle is arranged in one end of motor side half a coupler, and the spherical head of thrust collar withstands the baffle, from being drivenThe thrust and pulling force of moved end are transferred to motor shaft again by thrust collar to baffle；
The other end of the intermediate separation coupling is a disc-shaped diaphragm structure, and the membrane configuration intermediate cross-section is minimum, byCentre is incrementally increased to inner edge and outer rim direction section, with the angular displacement at compensation driving end and pump shaft, caused by balance misalignsAlternating load.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The head of the thrust collar is spherical surface.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The pump shaft and pump shaft side half a coupler one end, intermediate separation coupling one end and pump shaft side half a coupler are anotherEnd and motor side half a coupler one end are all made of rigid end-tooth connection structure with the intermediate separation coupling other end, make torsionSquare and moment of flexure are transmitted by end-tooth, and ensure each part connected from centering.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The pretightning force of the thrust collar is more than the maximum pull generated when working rotor.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The end-tooth of the intermediate separation coupling other end is located in the outer rim of its membrane configuration.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The other end of the intermediate separation coupling is equipped with endoporus, and thrust collar is arranged in the endoporus, and endoporus is for being oriented toThrust collar and transmitting thrust.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein：
The motor side half a coupler is connect with motor shaft using fluid pressure type interference.
Above-mentioned special roof structure end face tooth type flexible coupling, wherein
Preload when thrust collar assembles.
Compared with the prior art, the present invention has the following advantages：Using semirigid structure, when two shafts there are angular deviation,When radial displacement deviation, being compensated by membrane configuration, the rotor part for meeting mechanical side and motor side is non-statically determinate structure,And it is unilateral using a journal bearing support, meanwhile, each part is all made of rigid end face tooth structure connection, can transmit big torsionSquare reassembles dynamically balanced reproducible, centering reproducible after disintegration, moreover it is possible to meet in special transient state such as impeller side card rotorIt is broken at smallest cross-sectional when operating mode occurs and protects unit safety.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the stereogram of the removable intermediate shaft coupling of the present invention；
Fig. 3 is the sectional view of the removable intermediate shaft coupling of the present invention；
Fig. 4 is the radial displacement compensation principle figure of the present invention；
Fig. 5 is the overall structure diagram of the thrust collar of the present invention；
Fig. 6 is the membrane configuration cross section stresses distribution map of the present invention.
Specific implementation mode
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of special roof structure end face tooth type flexible coupling, one end connects pump shaft 1, and the other end connectsMotor shaft 7 is connect, the special roof structure end face tooth type flexible coupling includes：Pump shaft side half a coupler 2, one end and pump shaft1 connection；Intermediate separation coupling 3, one end are connect with the other end of half shaft coupling 2 of pump shaft side；Motor side half a coupler 6, oneThe other end with intermediate separation coupling 3 is held to connect；Thrust collar 4 is arranged in the other end of intermediate separation coupling 3；Baffle5, it is arranged in one end of motor side half a coupler 6, the baffle 5 is withstood on the head 41 of thrust collar 4, from by driving end（It willMechanical energy is converted to the impeller of liquid kinetic energy, is not shown in figure）Thrust and pulling force electricity is transferred to by thrust collar 4 to baffle 5 againArbor 7；As shown in Figure 2,3, the other end of the intermediate separation coupling 3 is a disc-shaped diaphragm structure 31, the membrane configuration 31Intermediate cross-section is minimum, is incrementally increased from centre to inner edge and outer rim direction section, and the angular displacement at end and pump shaft 1 is driven with compensation,Balance misaligns caused alternating load, and above structure makes the distribution situation of cross section and stress at 31 each radius of membrane configurationAs shown in fig. 6, horizontal axis in the radius corresponding diagram of membrane configuration 31, is incrementally increased by R1 to R2 radiuses, under special transient condition,If pump side rotor seizure, it can cause intermediate separation coupling 3 at the intermediate cross-section minimum of membrane configuration 31（Most weakness）It is broken and then protects unit safety, and stress is 0 under normal operating conditions, at the minimum of section, can meet stress and torque transmitsDemand.
As shown in figure 5, the head 41 of the thrust collar 4 be spherical surface with the angle displacement for compensating when rotor misalignment, spherical surfaceAllow small deformation, preload when thrust collar 4 assembles, and the pretightning force of thrust collar 4 has to be larger than and is generated when working rotorMaximum pull, this way it is ensured that intermediate separation coupling 3, thrust collar 4, motor side half a coupler 6 and baffle 5 in the course of workPermanent contact prevents from generating loosening when 4 under tension of thrust collar.
The pump shaft 1 and 2 one end of pump shaft side half a coupler, intermediate 3 one end of separation coupling and pump shaft side half a coupler 2 are anotherOne end and 6 one end of motor side half a coupler are all made of rigid end-tooth connection structure with intermediate 3 other end of separation coupling,Torque and moment of flexure are transmitted by end-tooth, and ensure each part connected in shaft coupling rotation process from centering, the present embodiment,Pump shaft 1 is connected and fixed in end-tooth engagement place by the first bolt and nut 8 with pump shaft side half a coupler 2, intermediate separation coupling 3 withPump shaft side half a coupler 2 is connected and fixed in end-tooth engagement place by the second bolt and nut 9, and motor side half a coupler 6 can with centreIt tears shaft coupling 3 open and fastening is connected by third bolt and nut 10 in end-tooth engagement place.
As shown in Figure 2,3, the end-tooth of 3 other end of intermediate separation coupling is located at the outer rim of its membrane configuration 31On, the other end of intermediate separation coupling 3 is equipped with endoporus 32, and thrust collar 4 is arranged in the endoporus 32, and endoporus 32 is pushed away for being oriented toPower head 4 and transmitting thrust, in such a way that this outer rim fixes inner edge guiding, the load edge in 3 each section of intermediate separation couplingAnnular spread, extension bear pulling force, and inner circle bears pressure.
As shown in figure 4, in the present embodiment, when assemble pump bearing and motor shaft 7 misalign for f=1mm when, according to pump bearingThe length membrane configuration 31 of present position can compensate for the angular deviation of maximum V=0.25mm.
The motor side half a coupler 6 is connect with motor shaft 7 using interference, tight by included hydraulic structure and motor shaft 7Gu screw is used in combination to fasten baffle 5 and 7 end face of motor shaft, and avoids motor shaft 7 and open up keyway and increase extra-stress failureRisk.
It is an advantage of the invention that according to the operating condition of core main pump, rotor bears pulling force when low voltage starting, specified when reachingOperating condition is that rotor bears pressure, which is that can bear double-direction twist moment and bidirectional propulsion（Pulling force and pressure）Transmission setMeter, because many places are using the structure connection of rigid end-tooth, axial connection is fastened by bolts, and bolt is subjected only to axial pre tightening force,Torque and moment of flexure are transmitted by end-tooth；Each part of the characteristics of being connected according to end-tooth, connection can guarantee from centering, in removableBetween the special construction design of shaft coupling can compensate the angular displacement of drive end axle and pump side shaft, have in whole cycle in additionIt is non-maintaining, with small vibration, in axial both direction（Under pulling force and pressure working condition）Equal non-loosening, and without the advantages that lubricating；AndAnd it can meet and be broken at smallest cross-sectional in special transient state such as the generation of impeller side card rotor operating mode and protect unit safety；In additionLight-weight using end face tooth structure, intensity is high, and stable and reliable operation is convenient to mount and dismount.When needing to repair pump side part,Intermediate separation coupling 3 is removed, repair and maintenance time, and the connection feature of end-tooth is greatly saved so thatShaft coupling after reassembling continues to ensure dynamic balance accuracy and accuracy of alignment.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentionedDescription is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention'sA variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.