CN201401492Y

CN201401492Y - Lock-up hydrodynamic torque amplifying coupling

Info

Publication number: CN201401492Y
Application number: CN2009201023289U
Authority: CN
Inventors: 潘自立
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-01
Filing date: 2009-04-01
Publication date: 2010-02-10
Anticipated expiration: 2019-04-01

Abstract

The utility model discloses a lock-up hydrodynamic torque amplifying coupling, which comprises a pump impeller, a worm wheel, a guide wheel, a lock-up clutch and a lock-up clutch driving mechanism, wherein the pump impeller is integrally connected with an outer casing of the torque amplifying coupling, the worm wheel is fixedly connected with an output shaft, and the guide wheel is connected witha decelerating machine shell for installing the torque amplifying coupling via a guide wheel one-way clutch and a guide wheel fixing sleeve. Moreover, the lock-up clutch consists of two portions connected through friction plates, one portion is connected with the output shaft, and the other portion is connected with the outer casing of the torque amplifying coupling. By arranging the guide wheel with the one-way clutch between the worm wheel and the pump impeller and adding the lock-up clutch and the driving mechanism thereof, the lock-up hydrodynamic torque amplifying coupling achieves enormous improvement in the starting performance, and more importantly, the lock-up hydrodynamic torque amplifying coupling has the advantages of greatly enhancing motor transmission efficiency, increasingstarting torque and low-speed output torque and solving the oil injection problem of traditional hydrodynamic couplings by adding a temperature sensor on a pump casing.

Description

Locking fluid power increases turns round coupling

Technical field

The utility model relates to a kind of locking fluid power and increases and turn round coupling.

Background technique

Fluid coupling uses for many years in coal transport equipment, and it has a lot of advantages, but also exists fatal shortcoming, and that is exactly that efficient is low, and power consumption is big, and maintenance is difficult.This is particularly outstanding in scraper plate machine conveyor and rubber conveyer, owing to there is the about 2%-3% of slippage of pump impeller and turbine, its efficient is lower when having scraper conveyor fluid coupling transferring power now, especially when transmitting big load, slippage is bigger, and efficient is also just low more.

The model utility content

The utility model technical issues that need to address provide a kind of efficient height, increase to start and the locking fluid power of low speed output torque increases and turns round coupling.

For addressing the above problem, technical solution adopted in the utility model is: a kind of locking fluid power increases turns round coupling, comprise and increase pump impeller, the input shaft of turning round the coupling shell and fusing, the turbine that is fixedly linked with output shaft, guide wheel, lock-up clutch and lock-up clutch driving mechanism, wherein guide wheel increases the decelerator body of turning round coupling by overrunning clutch, guide wheel fixed cover with installation successively and links to each other, lock-up clutch is made up of the two-part that connect by friction plate, a part is connected with output shaft, and another part is turned round the coupling shell and fixedlyed connected with increasing.

On the described guide wheel fixed cover temperature transducer is installed.

Described lock-up clutch driving mechanism comprises vane pump, accumulator, three-way solenoid valve, pressure relay, wherein vane pump is fixedly mounted on the output shaft, and vane pump drives liquid and flows through accumulator, three-way solenoid valve, pressure relay successively to lock-up clutch.

Adopt the beneficial effect that technique scheme produced to be: this is novel by being increased in the guide wheel that has overrunning clutch between turbine and the pump impeller, and increase lock-up clutch and driving mechanism thereof, on starting performance, be greatly improved, the most important thing is to have improved greatly electric-motor-driving efficient, startup and low speed output torque have been increased, bring great economic benefit to the user, on the guide wheel fixed cover, increase temperature transducer, solved the oil spout problem of traditional fluid coupling.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is this novel locking clutch actuation system schematic diagram;

Fig. 3 is this novel pump impeller, turbine and guide wheel working condition analysis chart;

Wherein: 1, increase and turn round the coupling shell, 2, overrunning clutch, 3, the guide wheel fixed cover, 4, output shaft, 5, bearing, 6, guide wheel, 7, pump impeller, 8, turbine, 9, vane pump, 11, lock-up clutch, 12, lock-up clutch hydraulic pressure piston, 20, pressure relay, 21, accumulator, 22, safety overflow valve 23, three-way solenoid valve.

Embodiment

Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:

As shown in Figure 1, this is novel to comprise with increasing and turns round the pump impeller 7 that coupling shell 1 fuses, the turbine 8 that is fixedly linked with output shaft 4, guide wheel 6, lock-up clutch 11 and lock-up clutch driving mechanism, half is installed in lock-up clutch 11 to increase and turns round on the coupling output shaft 4, and second half is installed in to increase and turns round on the coupling shell 1, there are some friction plates the centre, the lock-up clutch driving mechanism comprises vane pump 9, safety overflow valve 22, accumulator 21, three-way solenoid valve 23, pressure relay 20, the driving mechanism schematic diagram as shown in Figure 2, pump impeller 7 is cast in increasing of linking to each other with motor and turns round on the coupling, motor when rotation pump impeller and increase and turn round coupling and rotate together, guide wheel then increases the decelerator body of turning round coupling by guide wheel fixed cover 3 with installation and is fixedly linked, pump impeller 7, guide wheel 6, turbine 8 forms section after assembling be the ring bodies of circulate circle, during work, motor operation drives to increase turns round the coupling rotation, thereby drive pump impeller 7 together rotation with it, working liquid body in the pump impeller 7 is under centrifugal action, rush at turbine 8 and flow to guide wheel 6 by pump impeller 7 blade outer rims, flow back to pump impeller 7 blade inner edges through guide wheel 6 blades again and form circuit liquid stream along turbine 8 blades.Because many fixed guide wheels 6, in the process that liquid circulation is flowed, fixed guide wheel 6 is given 8 one moments of reaction of turbine, thereby makes turbine 8 output torques be different from pump impeller 7 input torques.

As shown in Figure 3, before electric motor starting, turbine 8 rotation speed n _W=0, motor drives pump impeller 7 rotates and working liquid body is produced a size is M _BMoment of torsion, this moment of torsion is the input torque of fluid coupling.Liquid stream is got back in the pump impeller 7 along fixed guide wheel 6 blades by behind pump impeller 7 impulse turbines 8, and the opplied moment of pump impeller 7, turbine 8 and 6 pairs of liquid of guide wheel is respectively M _B, M _WAnd M _D, according to the moment equilibrium condition of liquid stream M as can be known _W=M _B+ M _D, because the opplied moment M of 8 pairs of liquid streams of turbine _WFlow turbine 8 impact moment M ' with liquid _WThe opposite equal and opposite in direction of direction, i.e. M ' _W=M _W, so liquid stream is to the impact moment M ' of turbine 8 _W(being output torque) is greater than pump impeller 7 input torque M _B, play and increase the effect that improves starting performance of turning round, after the motor starting, turbine 8 rotating speeds increase gradually and guide wheel 6 suffered impact forces are diminished gradually from zero, and 6 pairs of liquid stream of the guide wheel moment of reaction also diminishes, and the increment of fluid coupling moment of torsion reduces thereupon.When turbine 8 rotating speeds increase to a certain numerical value, the liquid in turbine 8 outlet ports stream absolute velocity v _WDirection is parallel with guide wheel 6 blades, promptly just in time along the direction of guide wheel 6 blade exits.Because it flows to constantly the flow of liquid that flows out from turbine 6 through guide wheel 7 after, the moment of reaction is zero, i.e. M _D=0, M ' then _W=M _B, the output torque of turbine 8 equals the input torque of pump impeller 7.When turbine 8 rotating speeds further increase, turbine 8 outlet port liquid streams will impact the back side of guide wheel 6 blades, and 6 pairs of liquid stream of the guide wheel this moment moment of reaction is opposite with the direction of the opplied moment of 7 pairs of liquid streams of pump impeller, i.e. M ' _W=M _B-M _D, turbine 8 output torques will be less than pump impeller 7 input torques.For preventing that this phenomenon from producing, this novel overrunning clutch 2 that between guide wheel 6 and guide wheel fixed cover 3, adds, when turbine 8 rotating speeds increase to a certain value, liquid stream will impact the back side of guide wheel 6 blades, this moment, overrunning clutch 2 worked, guide vane is rotated and be not subjected to any moment, so just avoided the reduction of 6 pairs of pump impeller 7 driving torques of guide wheel.

Half is installed in lock-up clutch 11 to increase and turns round on the coupling output shaft 4, and second half is installed in to increase and turns round on the coupling shell 1, there are some friction plates the centre, simultaneously a vane pump 9 is installed increasing to turn round on the coupling output shaft 4, when turbine 8 did not change, vane pump 9 was motionless, the lock-up clutch hydraulic pressure piston cavity does not have hydraulic oil, 12 spring-loadeds of lock-up clutch hydraulic pressure piston break away from the friction plate akinesia, and lock-up clutch 11 is opened.When turbine 8 began to rotate, vane pump 9 rotors also began rotation, and vane pump 9 beginning pressure oil output enter in the accumulator 21.When turbine 8 rotating speeds reach certain value, vane pump 9 delivery pressures also reach certain value and push three-way solenoid valve 23 open, make pressure oil enter piston cavity, piston overcomes spring force pressure to friction plate, lock-up clutch 11 actions, increase and turn round coupling and become mechanical transmission, no its efficient of slippage transmission is more than 98%.When being used for scraper conveyor, owing to more hundreds of kilowatts of scraper conveyor power, so energy-saving effect is very obvious, operating cost can decline to a great extent.

Because the buffer function of accumulator 21, the hydraulic oil that during turbine 8 initial operations vane pump 9 is produced promotes lock-up clutch hydraulic pressure piston 12 at once, so one period buffer time is arranged, when this period, increase and turn round coupling and be the hydraudynamic drive state, this state can make each drive motor drive load distribution to be tending towards balanced, the pressure oil of stablizing 9 generations of rear blade pump is full of accumulator 21, open three-way solenoid valve 23 and make piston cavity fill pressure oil, promote lock-up clutch 11 and close, realize mechanical connection.When motor load distributes when unbalanced, its speed of motor of loading big is also certain high, the pressure of vane pump 9 generations will raise so, pressure relay 20 actions this moment, promote three-way solenoid valve 23 actions, piston cavity and fuel tank are connected, under the spring force effect, disconnect lock-up clutch 11, make to increase and turn round coupling and enter the hydraudynamic drive state once more, so that better distribute each motor load, when load distribution tend to balance stable after, lock-up clutch 11 closes once more, be mechanical connection, so just fully used to increase and turned round the advantage that coupling can make the load distribution equilibrium.

This novel on the guide wheel fixed cover (the guide wheel fixed cover is motionless) temperature transducer also is housed.When load raises, its oily temperature also will raise, and when height during to the sensor operating temperature, the sensor signal that will generate electricity cuts off the power supply motor to electric machine control system, like this with regard to the former fluid power coupling of thorough solution transship, the problem of oil spout, safe in utilization to guarantee; Simultaneously because the effect of lock-up clutch 11, can reduce hydraulic oil in the fluid coupling because of the heat that hydraulic shock and friction produce, help the hydraulic oil cooling, reduce the fuel injection event of fluid coupling.

These novel all advantages of having preserved old-fashioned fluid coupling fully; and on starting performance, be greatly improved; also obtained the change of essence on the overload protection performance, the most important thing is to have improved greatly electric-motor-driving efficient, this will bring very big economic benefit to the user.

Claims

1, a kind of locking fluid power increases and turns round coupling, comprise and increase pump impeller, the input shaft of turning round the coupling shell and fusing, the turbine that is fixedly linked with output shaft, it is characterized in that: also comprise guide wheel, lock-up clutch and lock-up clutch driving mechanism, wherein guide wheel increases the decelerator body of turning round coupling by overrunning clutch, guide wheel fixed cover with installation successively and links to each other, lock-up clutch is made up of the two-part that connect by friction plate, a part is connected with output shaft, and another part is turned round the coupling shell and is connected with increasing.

2, locking fluid power according to claim 1 increases and turns round coupling, it is characterized in that on the described guide wheel fixed cover temperature transducer being installed.

3, locking fluid power according to claim 1 increases and turns round coupling, it is characterized in that described lock-up clutch driving mechanism comprises vane pump, accumulator, three-way solenoid valve, pressure relay, wherein vane pump is fixedly mounted on the output shaft, and vane pump drives liquid and flows through accumulator, three-way solenoid valve, pressure relay successively to lock-up clutch.