CN1102868A - Impactor - Google Patents

Abstract

The impactor for stone crusher used in secondary crushing of ore consists of backing ring, impactor hammer, guide, piston-type driver and travel controller. It features its guide with bottom screwed on the backing ring, inside impactor hammer drived to move up and down, side-mounted travel controller for controlling the motion of impactor hammer and the flange-linked top piston-type driver. The sia impactor has high stone crushing efficiency and great crushing capacity.

Description

Impactor

The invention belongs to the critical piece of the stone breaker of field of mining rock ore deposit breaking up of boulders, it is by seat ring, block stamp, guiding device, and drive unit and travel control device are formed.

Chinese patent 91106882.1 discloses a kind of drop hammer type impactor (see figure 3); The tight hammer body 37 of wire rope 40 1 end bolts passes the inner chamber and the fixed pulley 41 on it of guide cylinder 38, and the other end connects the rope sheave of driver 39; Seat ring 34 is installed in the lower end of guide cylinder 38, and cushion pad 36 and buffer plunger 35 are housed therebetween, and the impact grinding stroke of its block stamp is realized by stroke pump 42 mounted thereto and stroke control valve 44 controls.

Though this impactor is simple in structure, easy to maintenance, but its impact energy can only have level adjustable, improving impact energy has only the quality and the impact stroke that increase block stamp to realize, so design then is subjected to the restriction of the physical dimension of impactor, otherwise it is huge that the structural volume of impactor will be tending towards, and the difficulty of processing of guide cylinder is big, is not easy to design the big impactor of impact energy.

The objective of the invention is to overcome the weak point of above-mentioned drop hammer type impactor, and provide a kind of not only compact conformation reasonable, difficulty of processing reduces, and impact stroke shortens, impact energy increases, and air defense is beaten and cushioned function and can realize effectively that all operation is reliable and stable, make the calculifragous efficiency height of second-time breakage stone breaker, the impactor that breaking capacity is big.

The technical scheme that above-mentioned purpose of the present invention reaches is: impactor is by seat ring, block stamp, and guiding device, piston type drive unit and travel control device constitute, and it is characterized in that:

The bottom of guiding device 3 connects seat ring 1 with bolton, its inside is equipped with by external force and is driven the block stamp 2 that moves up and down, its side is equipped with the travel control device that the control block stamp moves up and down, and its top links to each other with the piston type drive unit by flange, and uses bolt;

The bottom of the piston 5 of piston type drive unit is spherical, and the ball joint of its bulb and block stamp 2 is held tightly by two and half snap rings 14, and the steel bushing 15 of cover combines as a whole piston 5 and block stamp 2 again, and circlip 4 is contained in the top of steel bushing 15, and snaps in half snap ring 14; Drive controll block 7 by being bolted to the top of cylinder body 6; The cartridge valve Z1, the Z2 that install in it cooperate with travel control device; Its side is installed with that the carriage that is fixed on the cylinder body 6 10 holds up, and by the accumulator 9 of cingulum 8 fastenings; The lower end of cylinder body 6 is sleeved in the buffing pad 13, and the lower end of half snap ring 11 is stuck in the cannelure of buffing pad 13, and the middle shoulder of cylinder body 6 is pushed down in the upper end, and the periphery is with the collar 12, and two semi-rings 11 are combined as a whole;

The front end hinge of the lever 16 of travel control device connects roller 18, contacts with block stamp 2; The other end of lever 16 is connected by the spool of connecting rod 17 with two position and four-way reversing valves 19;

Be further described below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of impactor of the present invention;

Fig. 2 is impactor control principle figure of the present invention.

Fig. 1 has described the overall structure of impactor of the present invention.It is by seat ring, block stamp, and guiding device, piston type drive unit and travel control device constitute.

The bottom of guiding device 3 connects seat ring 1 with bolton, its inside is equipped with by external force and is driven the block stamp 2 that moves up and down, its side is equipped with the travel control device that control block stamp 2 moves up and down, and its top links to each other with the piston type drive unit by flange, and uses bolt.

The piston type drive unit is by piston 5, and cylinder body 6 drives controll block 7, accumulator 9, carriage 10, cingulum 8, half snap ring 11(2 spares), the collar 12, buffing pad 13 constitutes.The bottom of piston 5 is spherical, and the ball joint of its bulb and block stamp 2 is held tightly by two and half snap rings 14, the steel bushing 15 of cover combines as a whole piston 5 and block stamp 2 again, and circlip 4 is contained in the top of steel bushing 15, and snap in half snap ring 14, prevent that steel bushing from ejecting when impactor is worked; Drive controll block 7 by being bolted to the top of cylinder body 6; The cartridge valve Z1, the Z2 that install in it cooperate with travel control device, logical pressure oil of the epicoele of control piston 5 or logical oil return, thereby the motion control of realization block stamp; Its side is installed with that the carriage that is fixed on the cylinder body 6 10 holds up, and by the accumulator 9 of cingulum 8 fastenings; The lower end of cylinder body 6 is sleeved in the buffing pad 13, the lower end of half snap ring 11 is stuck in the cannelure of buffing pad 13, and the middle shoulder of cylinder body 6 is pushed down in the upper end, and the periphery is with the collar 12, two semi-rings 11 are combined as a whole, so form the movement travel (be cushion stroke) of cylinder body 6 in buffing pad 13.

Travel control device comprises lever 16, connecting rod 17, and roller 18, two position and four-way reversing valves 19, the front end hinge of lever 16 connects roller 18, can rotate around the axis, and contacts with block stamp 2, produces rolling friction; The other end of lever 16 is connected by the spool of connecting rod 17 with two position and four-way reversing valves 19; When block stamp 2 was pushed down roller 18 and made lever 16 produce swing, connecting rod 17 drove spools and produces and move up and down, thereby had realized the commutation of two-position four way change valve 19.

Fig. 2 has described the working condition of impactor of the present invention by reversing valve operated 27 controls.

1, block stamp rises

When block stamp 2 is in lower end position, conical surface 23 is pushed down roller 18 on it, because the effect of lever makes the two-position four way change valve 19 in the range controlling mechanism be positioned at " upper ", at this moment, the handle of reversal valve 27 is pushed " upper " position, pressure oil acts on the one hand the control chamber of Z2 in the driver control piece 7 through reversal valve 27 and range controlling mechanism, Z2 is closed, on the other hand, enter driver cavity of resorption 28 through working connection, and communicate with accumulator 17, at this moment, because the control chamber of Z1 is through the logical oil return of two-position four way change valve, make the epicoele 26 logical oil returns of driver, therefore, the piston 5 of driver rises, and drives block stamp 2 and rises.Because required flow was less when block stamp 2 rose, unnecessary pressure oil enters savings in the accumulator 9.

2, block stamp impacts

When block stamp 2 rises, it is the conical surface 22 pressure position rollers 18 down, up to make the two-position four-way valve commutation be positioned at " the next " by leverage, at this moment, the logical pressure oil of the control chamber of Z1 in the driver control piece 7, Z1 is closed, and the logical oil return of the control chamber of Z2, Z2 opens under the effect of pressure oil simultaneously, like this, the pressure oil of working connection enters the cavity of resorption 28 and the epicoele 26 of driver simultaneously, and at this moment, driver is equivalent to a differential hydro cylinder, because the active area of epicoele 26 is far longer than the active area of cavity of resorption 28, so piston 5 is down done accelerated motion under the effect of pressure oil, drive block stamp 2 and impact downwards.Along with the increasing of the movement velocity of piston 5, epicoele 26 required pressure oils increase, and at this moment, accumulator 9 and hydraulic pump 21 have enough driving forces simultaneously to its fuel feeding to guarantee driver.

Push down roller 18 once more when the last conical surface 23 of block stamp 2, when making reversal valve 19 commutations, driver presents the state that block stamp is risen once more, so goes round and begins again, and realizes the bump of block stamp 2.

3, singles' control

The single-impact of block stamp 2 then needs to control by reversing valve operated 27 handle, being about to handle dials behind " upper " position, after block stamp falls to impacting rock, handle is pushed " meta ", because pressure oil enters Z1 in the driver control piece 7 simultaneously, the control chamber of Z2, make Z1, Z2 closes simultaneously, at this moment, 26 sealings of driver epicoele make the actuator piston stop motion.

4, control is played in air defense

After rock was crashed to pieces, impactor was if can not stop automatically impacting, and then its impact once more just all acts on the equipment self, and damages parts.This impactor itself has the function that automatic anti-aircraft is beaten.The empty phenomenon of beating is taking place, the piston 5 of driver moves downward fast, when the oil input channel 25 of its cavity of resorption 28 is pushed down on piston 5 surfaces, cavity of resorption 28 becomes an enclosed cavity, like this, even the handle of valve 27 is in " the next " position, the cavity of resorption 28 of piston 5 also can't advance pressure oil, block stamp can not be risen once more, thereby realized the antiaircraft control of beating.If will impact once more, then with block stamp jack-up, make the oil input channel 25 of cavity of resorption 28 break away from the surface of piston 5, make cavity of resorption 28 advance pressure oil once more.

5, impact mitigation measure

In operation process, the empty phenomenon of beating is always unavoidable, if there is not impact mitigation measure, then the impact energy of block stamp is all born by equipment self.This impactor has the two-stage pooling feature, at first, after sky is dismissed life, as previously mentioned, the face seal oil input channel 25 of piston 5 makes cavity of resorption 28 become enclosed cavity, at this moment, hydraulic oil in the enclosed cavity is with regard to a suitable buffer spring that coefficient of elasticity is bigger, and the part energy of absorption block stamp, this is a first-level buffer; When the hydraulic oil pressure of this enclosed cavity is reduced to a certain amount ofly, energy remaining makes impactor piston 5 drive cylinder bodies 6 and moves together.At this moment, because cylinder body cavity of resorption 24 is common pressure chamber, the power on the cylinder body annulus area of acting on makes block stamp etc. do retarded motion, thereby has realized second level buffering.

Claims (1)

1, the impactor of the stone breaker of a kind of field of mining rock ore deposit breaking up of boulders is by seat ring, block stamp, and guiding device, piston type drive unit and travel control device constitute, and it is characterized in that:

The bottom of guiding device 3 connects seat ring 1 with bolton, its inside is equipped with by external force and is driven the block stamp 2 that moves up and down, its side is equipped with the travel control device that control block stamp 2 moves up and down, and its top links to each other with the piston type drive unit by flange, and uses bolt;

The bottom of the piston 5 of piston type drive unit is spherical, and the ball joint of its bulb and block stamp 2 is held tightly by two and half snap rings 14, and the steel bushing 15 of cover combines as a whole piston 5 and block stamp 2 again, and circlip 4 is contained in the top of steel bushing 15, and snaps in half snap ring 14; Drive controll block 7 by being bolted to the top of cylinder body 6; The cartridge valve Z1, the Z2 that install in it cooperate with travel control device; Its side is installed with that the carriage that is fixed on the cylinder body 6 10 holds up, and by the accumulator 9 of cingulum 8 fastenings; The lower end of cylinder body 6 is sleeved in the buffing pad 13, and the lower end of half snap ring 11 is stuck in the cannelure of buffing pad 13, and the middle shoulder of cylinder body 6 is pushed down in the upper end, and the periphery is with the collar 12, and two semi-rings 11 are combined as a whole;

The front end hinge of the lever 16 of travel control device connects roller 18, contacts with block stamp 2; The other end of lever 16 is connected by the spool of connecting rod 17 with two position and four-way reversing valves 19.

Images