CN2340637Y - Quick action clutch of vehicle - Google Patents

Abstract

The utility model relates to a quickly separated clutch of a motor vehicle, which comprises a body portion and a hydraulic operating portion, wherein, the body portion comprises a flywheel, an intermediate driving disk, a pressure disk, a clutch cover, a small assembly of a driven disk, a compression spring group, a release sleeve, a shifting fork and a transmission shaft; the operating portion comprises a floor sheet a hydraulic executing portion which is composed of a hydraulic pump and a piston oil cylinder, and a return orifice check valve is added between the hydraulic pump and the piston oil cylinder. Separation and combination are implemented through the control of the movement of the piston by the floor sheet. The utility model has the characteristics of simple structure, fast separation, slow combination, etc., and the utility model can be used for various motor vehicles and engineering machines.

Description

A kind of motor vehicle power-transfer clutch that can separate fast

The utility model relates to a kind of improved motor vehicle power-transfer clutch, belongs to the Clutch Technology field.

Small-sized or heavy-duty vehicle and construction machinery and equipment, because of the engine power of its configuration is bigger, general horsepower at 100-700PS, driving torque at 500-3000NM, so power-transfer clutch is had higher requirement.Heavy-duty vehicle is numerous and diverse because of vehicle, not only causes the kind specification of power-transfer clutch many, and complex structure, and rapid wear is parts price height in addition, thereby has increased difficulty and maintenance cost that the vehicle adjustment is safeguarded; In addition, when under abominable pavement conditions, travelling, have be easy to burn and service life problem such as out of reach standard.With representative West Germany watt brother's nail (unit of length) company design-calculated power-transfer clutch is example, this power-transfer clutch, owing to adopted three grades of buffering methods, though in conjunction with steadily, separate more thoroughly, its structure is too complicated, in addition parts many, separate that stroke is big, manufacturing adjusting accuracy height.Clutch drived disk assy wherein, component count two is up to tens in addition, it separates the stroke single-deck is that 12-14MM, double plate are 14-18MM, the shape stroke is big, disengaging time is long owing to separate, when under the mal-condition of road surface, travelling, often heat up scaling loss power-transfer clutch when serious because of separating the untimely clutch friction that causes.

The purpose of this utility model be to provide a kind of have separate fast thoroughly, in conjunction with slowly steadily, and simple in structure, easy to operate, use power-transfer clutch reliable, wide adaptability.

The purpose of this utility model is to do the corresponding back realization that improves by little assembly of clutch plate and steering unit to power-transfer clutch, and its technical scheme is:

A kind of motor vehicle power-transfer clutch that can separate fast, it comprises clutch body partial sum actuating element, wherein, body part comprises flywheel 1, middle driving disc spacing pressing 2, platen 3, clutch cover back plate 4, the little assembly of clutch plate, compression spring set 6, cutoff clutch 7, shift fork 8, transmission shaft 9; Function part comprises pedal 30 and the hydraulic pressure operating part that is linked in sequence and is formed by Hydraulic Pump 31, piston oil-cylinder 32, its improvement is, the little assembly 5 of described clutch plate comprises spline housing 12, disk 14, friction lining 15, wherein, disk is fixed on the spline housing card, friction lining is fixed on the card of the outer slightly part of disk, sets up an one-way throttle valve 33 between described Hydraulic Pump and the piston oil-cylinder.

For gaining in strength, above-mentioned power-transfer clutch, described disk root installs backplate 13 respectively additional.

Above-mentioned power-transfer clutch, described one-way throttle valve be by spool 36, compositions such as spring 37, valve seat 40, and the sealing surface of spool and valve seat is a frusto-conical surface, spool is pressed to sealing surface of seat under action of the spring, have cutoff port 41 on the spool.

For improving comformability and reduce power consumption, above-mentioned power-transfer clutch, institute's fast Hydraulic Pump employing homing position type plunger cylinder, its stopper head and pedal contact.

For making rapid operation, above-mentioned power-transfer clutch, set up a power-assisted cylinder 34 between described homing position type plunger cylinder and the pedal, this power-assisted cylinder comprises cylinder body 34-1, piston 34-2, reaches the change-over valve 34-3 of control inlet and outlet, wherein, the piston rod of piston is connected with the plunger of homing position type plunger cylinder, the valve core rod of change-over valve and pedal contact.

The utility model adopts and to set up in oil circuit that one-way throttle valve, control advance, the oil return flow velocity is realized separating fast, in conjunction with design slowly, replace buffer structure design complicated in the former power-transfer clutch, simplify the structure of power-transfer clutch greatly and shortened that it separates, the stroke of combination, thereby overcome defectives such as former power-transfer clutch easily burns; The design of adopting plunger cylinder to make Hydraulic Pump and set up the power-assisted cylinder, both reduced hydraulic part expenditure of energy, make rapid operation, and further enlarge applicable area of the present utility model.To sum up, the utility model is simple in structure, separate fast thoroughly, in conjunction with slowly steadily, rapid operation, use be reliable, can be widely used on various power actuated vehicles and the construction machinery and equipment.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model body construction scheme drawing;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the little assembly structure scheme drawing of the utility model clutch plate;

Fig. 4 is West Germany's watt little assembly structure scheme drawing of brother's nail (unit of length) clutch driven disc;

Fig. 5 is a hydraulic pressure operating part schematic diagram;

Fig. 6 is a hydraulic pressure operating part schematic diagram of setting up the power-assisted cylinder;

Fig. 7 is the structural representation of one-way throttle valve;

Fig. 8 is the power-assisted structural representation of air cylinder.

The little assembly of clutch plate of West Germany shown in Figure 4 watt brother's nail (unit of length) power-transfer clutch is by friction lining 20, roundel 21, spring leaf 22, rivet 23, spline housing 24, packing ring 25, driven disc 26, damper spring 27, driving disc spacing pressing 28, body disk 29, friction lining 30, wavy spring sheet 31 compositions such as grade, its other parts reach tens, and parts and integral structure are all very complicated in addition, because it is long that other parts separate stroke more, cause friction lining because of not separating the increase that rubs fast, this friction produces a large amount of friction heats, power-transfer clutch is sharply heated up, sometimes temperature rise is up to 800 degrees centigrade, and this is to cause power-transfer clutch to burn and influence the power-transfer clutch major cause in service life.The friction lining of this power-transfer clutch adopts the composite material that is wrapped with brass wire in the cotton yarn that soaks into artificial resin and asbestos yarn and the every yarns to make, this friction lining itself is good high temperature resistant, the crocking resistance of tool, with the contacted platen material of friction lining be antiwear cast iron alloy, this wear-resisting, resistant to elevated temperatures friction pair combination all can not hinder the scaling loss of system power-transfer clutch, thus, the way of seeking to solve from friction lining and platen material aspect will be difficult to have breakthrough, so should grasp other solution route of rope.

The utility model is set about from the little assembly of clutch plate and operating system two parts, and the power-transfer clutch of West Germany's watt brother's nail (unit of length) is improved.

Fig. 1 is the B-B revolved sectional view of Fig. 2, and power-transfer clutch is in bonding state among the figure, and platen 3 is realized the transmission of torque power being pressed on the little assembly 5 of clutch plate under the effect of several spring assembly 6, making itself and flywheel 1 run-in synchronism and driving transmission shaft 9 rotations.Platen 3 is realized the synchronous shift of itself and cutoff clutch 7 by 6 separator levers 10, lever 10 is fixedly hinged on clutch cover back plate 4, one end and platen 3 are hinged, its other end is arranged in 6 end face grooves of cutoff clutch 7, can move radially along this groove, when shift fork 8 promoted cutoff clutchs and moves to left, separator levers clockwise rotated, drives platen and overcomes spring force and move to right, disengage the clutch; Shift fork 8 mobile is that the piston motion by pedal control hydraulic pressure operating part piston oil-cylinder realizes.

As shown in Figure 3, the little assembly of the utility model clutch plate has been cancelled parts in addition such as friction sheet in the former clutch plate buffer structure, driven disk, damper spring, spring leaf, wavy spring sheet, simplify its structure and other number of components, dwindled the separation stroke of power-transfer clutch from structure, the separation stroke of its single-deck only is 2-3MM, for architecture basics has been established in the quick separation that realizes power-transfer clutch.

The operating mechanism of existing power-transfer clutch is divided into mechanical type, hydraulic actuated formula etc., and the utility model adopts the hydraulic actuated formula, and its improvement is to have set up an one-way throttle valve 33 between Hydraulic Pump and piston oil-cylinder.During disengaging of clutch, pressure oil is opened check valve, is entered piston oil-cylinder, makes piston promote shift fork 8 displacements fast with big flow, because of separating the stroke weak point, can realizing disengaging of clutch in moment; Otherwise fluid can only make power-transfer clutch realize slow pulsation-free combination from less cutoff port to reflux than low discharge.

One-way throttle valve can adopt independently that check valve and throttle element are formed by connecting according to schematic diagram, also can adopt the assembly set of check valve and the two unification of flow regulating valve.One-way throttle valve shown in Figure 8 is a kind of combine valve of the two unification.When pressure oil was pressed among the figure oil-feed of direction shown in the arrow, the application force that spool 36 overcomes retracing spring 37 moved to left, makes that the oil-feed cross section increases, the fluid flow is big, realizes separating fast; Otherwise during oil return, the truncated cone shape sealing surface of spool and valve seat is at the action of the spring lower seal, and fluid can only be refluxed by cutoff port 41, and the backflow cross section is little, flow velocity is slow, so the slow pulsation-free combination of power-transfer clutch.Among the figure, inner spring collar 38 is used for block spring 37, because the collar internal diameter is less, be difficult for coupling with the spring size, so install a plain cushion 39 between the two additional; Fittings body 42 is used for this valve is inserted oil circuit easily

Because the operating frequency of piston oil-cylinder and the frequency width of cloth are lower, for the vehicle that self has hydraulic efficiency gear, though can pick out a branch road for using in the hydraulic efficiency pressure system by self, but this is the burden that can increase hydraulic efficiency pressure system, the 2nd, and when being failure to actuate, piston oil-cylinder will make Hydraulic Pump for a long time with no work done, increase waste of power; In addition, also inconvenience is used for self not with the power actuated vehicle of hydraulic efficiency pressure system, for this reason, Hydraulic Pump of the present utility model can adopt the homing position type plunger cylinder to substitute, the high pressure oil that the oil cylinder volume-variation produces when utilizing plunger motion is realized the pump functional oil, so both saved can the amount device, reduced waste of power, satisfied operating needs, make use of the present utility model not receive the restriction of no hydraulic efficiency pressure system again, further enlarged its range of use.

In the hydraulic schematic diagram shown in Figure 5, because plunger motion is directed to the operating effort of pedal, consider that the required operating effort of heavy vehicle clutch is bigger, for alleviating pedal operation power, as shown in Figure 6, can behind plunger cylinder, install a power-assisted cylinder 34 additional, amplify the operating effort of pedal by the power-assisted cylinder, thereby reach the labor-saving effect.Choose the ratio of different cylinder pistons and diameter of plunger, can obtain different force amplification effects.

Among Fig. 8, the cylinder body of this enforcement side power-assisted cylinder and the cylinder body of piston oil-cylinder are the cylinder body 50 of one, the piston rod of cylinder piston 51 extends the plunger of back double as plunger cylinder, the valve pocket 52 of change-over valve, spool 53 is set in the piston hole of cylinder piston, when stepping on pedal 30 and promoting valve pockets 52 and overcome big spring 54 resistances and move to left, valve pocket is at first by interior collar 63, little spring 55 drives spool 53 and moves to left synchronously, seal exhausr port 58, spool stops to move to left and valve pocket continues to move to left then, open admission port 57, pressurized air is by pore 59,56,57,64 enter the cylinder piston right-hand member, promote the piston left lateral, the plunger of piston rod left end carries out pump oil pressure oil output; When unclamping pedal, plunger resets to the right under return spring 54 effect, sealed porosity 57, opens deflation hole 58, the air in the right chamber of piston enters chamber, a piston left side by pore 64, deflation hole 58, link up pressure release through air bleeder nipple 60 and atmosphere again, plunger return is realized the reciprocating pump oil motion of plunger.The plunger cylinder top is provided with lubricating cup 55, its effect is to the plunger case repairing, when plunger is in reset position shown in Figure 8, the fuel feed hole 66 of lubricating cup communicates with cylinder body fuel feed hole 65, the oil of lubricating cup can replenish in cylinder body, when plunger slightly when moving to left, two holes misplace mutually, the supply oil circuit is cut off, the oil when guaranteeing the plunger compression in the cylinder can not reflux; The plunger case top also is provided with aie escape valve 62, is used to discharge the air in the cylinder; The joint 61 of cylinder right-hand member is and one-way throttle valve bonded assembly joint.

The quantity of the little assembly of present embodiment clutch plate is two, its overall separation stroke is 4-6MM, because the moment of torsion of driving engine is to transmit by the friction force between flywheel and clutch plate contact surface, for adapting to the transfer torque and the energy of reserve requirement of different vehicle, the quantity of compression spring set 6 can be selected in the 6-54 group, and spring assembly quantity was many when moment of torsion was big; For making full use of the space, spring assembly can adopt the mode of big or small spring suit; The specification of the utility model clutch-lining can be 280MM-450MM, the power-transfer clutch torque peak is 800KG/W, minimal torque is 50KG/M, the permission maximum power is 800PS, the permission minimum power is 100PS, maximum allowable speed is 2800RPM, applicable area is very big, can with domestic and international various vehicles such as east wind, Steyr, benz, iron-clad horses, the Yellow River, Nissan, Hino, Mitsubishi, Tatra etc. and the supporting use of various construction machinery and equipments, through experiment, noiselessness in the use, non-jitter, the ten thousand kilometers friction linings of 20-30 that travel need not changed, and can use the car heavy repair phase always; When friction lining surpasses wear limit, only need more renew friction lining just can, maintenance and easy to adjust is a kind of power-transfer clutch with superior in-use performance.

Claims (5)

1. motor vehicle power-transfer clutch that can separate fast, it comprises clutch body partial sum actuating element, wherein, body part comprises flywheel [1], middle driving disc spacing pressing [2], platen [3], clutch cover back plate [4], the little assembly of clutch plate, compression spring set [6], cutoff clutch [7], shift fork [8], transmission shaft [9]; Function part comprises pedal [30] and the hydraulic pressure operating part that is linked in sequence and is formed by Hydraulic Pump [31], piston oil-cylinder [32], it is characterized in that, the little assembly of described clutch plate [5] comprises spline housing [12], disk [14], friction lining [15], wherein, disk is fixed on the spline housing card, friction lining is fixed on the card of the outer slightly part of disk, sets up an one-way throttle valve [33] between described Hydraulic Pump and the piston oil-cylinder.

2. power-transfer clutch according to claim 1 is characterized in that, described disk root installs backplate [13] respectively additional.

3. power-transfer clutch according to claim 2 is characterized in that, described one-way throttle valve is by spool [36], spring [37], valve seat compositions such as [40], the sealing surface of spool and valve seat is a frusto-conical surface, and spool is pressed to sealing surface of seat under action of the spring, has cutoff port [41] on the spool.

4. power-transfer clutch according to claim 3 is characterized in that, described Hydraulic Pump adopts homing position type plunger cylinder, its stopper head and pedal contact.

5. power-transfer clutch according to claim 4, it is characterized in that, set up a power-assisted cylinder [34] between fast homing position type plunger cylinder of institute and the pedal, this power-assisted cylinder comprises cylinder body [34-1], piston [34-2], reaches the change-over valve [34-3] of control inlet and outlet, wherein, the piston rod of piston is connected with the plunger of homing position type plunger cylinder, the valve core rod of change-over valve and pedal contact.

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