CN2072168U - Air-compressor clutch for four-wheel tractor - Google Patents

Abstract

The utility model relates to an air-compressor clutch for a four-wheel tractor, comprising an air cylinder which is communicated with an air storage tank, a piston with sealing leather wires (17) which is arranged on the air cylinder, a connecting shaft (13) which is arranged on a piston rod (15) through a bearing (20), sliding clutch teeth (4) which are connected with the connecting shaft through a lever, a liner (23) which is arranged on a power shaft (27), a belt wheel (1) which is arranged on the liner through a bearing (24), and clutch teeth (2) which are integrated with the belt wheel. The sliding clutch teeth (4) are sheathed on the liner through a short key (3).

Description

Air-compressor clutch for four-wheel tractor

The utility model relates to a kind of air compressor clutch that uses on tractor with small four wheels.

Now on the tractor with small four wheels, its air compressor is directly driven by the line shaft of the motor of tractor, does not have clutch in the transmission of the line shaft of motor and air compressor, as long as motor is in work, air compressor is also being worked.Because air compressor has a gas tank, when gas tank reaches certain pressure, just do not need the air compressor air feed.Though do not need air compressor work this moment,, cause air compressor to flog a dead horse because air compressor can not be thrown off with motor.Owing to lack clutch, the normal commentaries on classics of air compressor is not stopped, wearing and tearing increase, perishable, and have also increased the load of motor.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art and the air compressor clutch that provides a kind of tractor with small four wheels to use, and it has the function of automatic clutch along with the air pressure height of air compressor gas tank.

The technical solution that the utility model is taked is, the special way of the air compressor clutch that tractor with small four wheels uses is: load onto a lining with key and screw on the line shaft of motor drive air compressor, ball bearing is housed on the lining, the belt pulley that has the clutch tooth is housed on the bearing, two short keys are housed on the lining left end symmetrically, the slide engaging and disengaging tooth is enclosed within on lining and the short key, two U-shaped power transferring arms are housed on the end face of slide engaging and disengaging tooth symmetrically, two U-shaped fulcrum arms also are housed on the end face of lining symmetrically, two lever arms are hinged on the power transferring arm symmetrically, on fulcrum arm and the coupling shaft, connecting bushing is on ball bearing, bearing is contained on the piston rod, one skin money is housed on piston rod, at upper cover of piston rod one spring is arranged, piston is contained in the inflator, be equipped with on the inflator and adjust nut and locking nut, one hollow bolt is housed on the inflator head, the twice locating slot is arranged on the inflator arm, one through hole is arranged on piston head, one spring is housed in the hole, is placed with the steel ball that two diameters are slightly less than the aperture at both ends of the spring.

The utility model than the good effect that prior art obtains is: after loading onto clutch, the wearing and tearing of air compressor reduce, fault reduces, the compound minimizing of motor, because when gas tank reaches certain pressure, clutch is worked automatically, and the belt pulley and the engine shaft that drive air compressor are broken away from, and air compressor is no longer worked.After loading onto clutch, do not influence the required pressurized air of air compressor normal supply tractor yet.And the utility model can be worked automatically, does not increase driver's work load.

The utility model will be described in further detail in conjunction with the accompanying drawings.

Accompanying drawing is the assembly structure figure of air compressor clutch.Load onto a lining 23 with key 22 and screw 25 on the line shaft 27 of motor drive air compressor, ball bearing 24 is housed on the lining, the belt pulley 1 that drives air compressor is housed on the bearing, clutch tooth 2 is arranged on the belt pulley, clutch tooth and belt pulley are structure as a whole.Two short keys 3 are housed on lining 23 left ends symmetrically, the short keyway of two symmetries is arranged on the slide engaging and disengaging tooth 4, slide engaging and disengaging tooth 4 is sleeved on lining 23 and the short key 3.Load onto two U type power transferring arms 5 symmetrically with screw on the end face of slide engaging and disengaging tooth 4, load onto two U type fulcrum arms 28 symmetrically with screw 26 on the end face of lining 23, fulcrum arm and power transferring arm are point-blank.Two lever arms 16 are hinged on power transferring arm 5, fulcrum arm 28 and the coupling shaft 13 symmetrically.Fulcrum arm is in the centre, and power transferring arm and coupling shaft are at the two ends of lever arm.At a groove, the termination of two lever arms is hinged with coupling shaft in groove in the hinged place for coupling shaft.The coupling shaft the other end is bigger, is enclosed within on the ball bearing 20, and this bearing is contained on the piston rod 15, piston rod and piston head 29 are one, and the screw rod that stretches out is arranged on the piston head, put sealing rubber-insulated wire 17, pad 19 at screw rod, tighten with nut 18 then, one through hole is arranged on the piston head, a spring 6 is housed in the hole, put steel ball 10 at both ends of the spring, diameter of the steel ball is slightly less than the aperture, steel ball is contracted in the hole, and whole piston is contained in the inflator 11, and can move in inflator.Inflator one end is equipped with adjusts nut 7 and locking nut 8, and the other end is equipped with hollow bolt 12, and hollow bolt is connected with the gas tank of air compressor, and hollow bolt reaches in the inflator.Piston rod 15 passes from adjust nut 7, is positioned at piston rod on the bar of inflator to be with a spring 14.Twice groove 9 is arranged on the inwall of inflator 11, and the position of this groove is reaching when making slide engaging and disengaging tooth 4 be separated from clutch tooth 2 position of steel ball on the piston just to moving to left under the gas pressure when piston.This groove cooperates with spring 6 under steel ball and the steel ball, makes when only the pressure in gas tank drops to certain value, and piston is pushed piston to the right once under the effect of spring 14, makes slide engaging and disengaging tooth 4 and 2 engagements of clutch tooth.It is fixed on the tractor can loading onto a cover on the inflator.

Working procedure of the present utility model is: after compressor is being worked a period of time, pressure in the gas tank is higher, gas tank communicates with inflator with pipeline, air pressure push piston in the inflator piston rod that moves to left promotes coupling shaft 13, coupling shaft handspike lever arm 16 draws slide engaging and disengaging tooth 4 to the right by leverage, is separated from clutch tooth 2, belt pulley 1 no longer rotates, and air compressor is no longer worked.When the gas tank internal pressure drops to certain value, piston is pushed the right to suddenly under the effect of spring 14, and slide engaging and disengaging tooth 4 is to moving to left, and with 2 engagements of clutch tooth, belt pulley rotates, and drives air compressor work.Line shaft 27 drives lining by key 22 and rotates, and lining 23 drives the slide engaging and disengaging tooth by short key 3 and rotates, and coupling shaft 13 also is in rotary state, but piston does not rotate.

Claims (1)

1, the air compressor clutch that a kind of tractor with small four wheels uses, it is characterized in that: on the line shaft 27 of motor drive air compressor, load onto a lining 23 with key 22 and screw 25, ball bearing 24 is housed on the lining, the belt pulley 1 that has clutch tooth 2 is housed on the bearing 24, two short keys 3 are housed on lining 23 left ends symmetrically, slide engaging and disengaging tooth 4 is enclosed within on lining 23 and the key 3, two U-shaped power transferring arms 5 are housed on the end face of slide engaging and disengaging tooth 4 symmetrically, two U-shaped fulcrum arms 28 also are housed on the end face of lining 23 symmetrically, two lever arms 16 are hinged on power transferring arm 5 symmetrically, on fulcrum arm 28 and the coupling shaft 13, connecting bushing is on ball bearing 20, bearing 20 is contained on the piston rod 15, a skin money 17 is housed on piston rod head, at upper cover of piston rod one spring 14 is arranged, piston is contained in the inflator 11, be equipped with on the inflator and adjust nut 7 and locking nut 8, one hollow bolt 12 is housed on the inflator head, twice locating slot 9 is arranged on cylinder inner wall, one through hole is arranged on piston head, one spring 6 is housed in the hole, is placed with the steel ball 10 that two diameters are slightly less than the aperture at both ends of the spring.

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