CN1005485B - Matter-stacking and fetching mach - Google Patents

Abstract

The present invention relates to a material stacking and fetching device which has a pitching and rotary supporting device for supporting an arm support structure, wherein the arm support structure has a main arm support and a tail arm support; a feed device is arranged along the main arm support; the tail arm support extends out in a reverse direction; a balance block is vertically hung on a pivot on the end of the tail arm support; the tail arm support is higher than the main arm support in order to reserve space for the feeding delivery device; the balance block can be moved by a control steel wire rope; the steel wire rope is tied on a non-pitching part of a supporting device in front of a pitching shaft. Therefore, when upward pitching movement is made on the arm support structure, the balance block moves forwards for compensating for backward movement on the end of the tail arm support at the moment, and a maximum overturning moment needing to be overcome is reduced.

Description

Stacker-reclaimer

The stacker-reclaimer that the present invention relates to be used on stockpile, to stack bulk cargo and get material from stockpile.

Known stacker-reclaimer comprises a preceding jib or principal arm frame, and this preceding jib or principal arm frame are the parts of the jib structure on pitching and the supporting device for sluing mechanisms.Conveyer, is deposited on the stockpile the front end of mass transport to jib along jib.In order to collect material from stockpile, at the front end of jib bucket wheel or other material-gathering device are housed, be used for collection material and they are deposited on the conveyer, material-gathering device is the reversing sense running.For the weight of balance jib and relevant device thereof at least in part, jib structure has short tail jib, and the tail jib stretches out in the opposite direction from bracing or strutting arrangement, and extreme end is equipped with a balance block.Like this, just reduced the capsizing moment on the bearing set of jib structure, made the economy simple in structure of bearing set.

In order to hold a lifting conveyer to the inner feed of principal arm frame, when stacker-reclaimer carried out the windrow operation, the tail jib is inevitable to be higher than the principal arm frame significantly, thereby when the jib structure pitching, the effectiveness of balance block changes.This situation occurs and be because the axle of principal arm frame along reaching bearing set with the roughly the same level height of pitching pivot, therefore any point on the jib all is vertical shifting vertically or almost during pitching, and in same pitching was moved, the balance block that is on the tail jib of higher position but had a significant parallel motion component.Like this, balance block can change to the moment of pitching pivot, and in order to overcome this issuable variation, the bearing set of jib structure must be able to bear an in fact bigger resultant moment, this resultant moment jib structure that can topple.Therefore, need more crash-resistant jib supporting structure, and this requirement has exactly limited the maximum capacity of stacker-reclaimer.

The stacker-reclaimer that proposes according to the present invention has a jib structure that is bearing on pitching and the supporting device for sluing mechanisms, and this structure comprises: a principal arm frame that stretches out forward, along principal arm frame length direction feeding device is arranged, and principal arm frame front end has material collecting device; The one tail jib that stretches out backward, have a balance block away from bearing set on the tail jib, the tail jib is configured in the position that is higher than the principal arm frame, so that be bont slot milling to this jib feeding device feed, this balance block hangs from above below this tail jib by the pivot on the tail jib, this balance block can towards or the pivot axis that deviates from bearing set move; Be used to control the device that this moves, can be raised to level attitude when above, balance block is moved forward with respect to its pivot at the principal arm frame.

Usually, balance block is controlled by waiting the tension element of facing upward motion effects, this tension element ties up on the balance block, be used for all making balance block remain on the place ahead of its pivot in all working position of jib structure, therefore, tension element will continuously keep tension state and all start to control making usefulness in the operating range.

Like this, an end of tension element can tie up on the balance block, and the other end is fixed on the anchor that does not participate on pitching and pitching that rotatablely moves and the supporting device for sluing mechanisms member.Preferred structural form is that tension element is upwards extended forward from anchor, crosses the guides on the middle mast of jib structure and face toward balance block from this guides to extend back.

Expressed the example according to a stacker-reclaimer of the present invention in the accompanying drawing, the principal arm frame that is respectively this machine shown in Fig. 1-3 is in level, the position of rising and putting down.

This stacker-reclaimer comprises that one is the base (not shown) of common version fully; Be the pitching and the supporting device for sluing mechanisms of known pattern on the base, it comprises swivel bearing circle 2, the platform 4 that can rotate around the vertical pivots line of rotation circle 2 and the pitching pivot 6 that intersects with the rotating hinge line.Jib structure 8 comprises mast 10, and mast 10 drives hydraulic actuating cylinder 12 by pivot 6 and the pitching of pivot fwd and is installed on the platform.

The part that jib structure stretches out forward from mast comprises principal arm frame 14, and principal arm frame 14 is bearing in fixed position with respect to mast by the pin attaching parts 16 of its inner and the steel rope 18 between its outer end and the mast top.Usually, belt conveyer 19 arranges that along the length direction of jib bucket wheel 20 is rotatably installed in jib foremost.

The height in the middle of steel rope on principal arm frame and mast and principal arm frame and the mast connecting place roughly, an auxiliary tail jib 22 is fixed on the mast, steel rope 24 supportings of auxiliary tail jib by reach this tail jib outer end from the mast top.The tail jib is configured in apparently higher than the position of principal arm frame, so that can hold a general lifting conveyer 26 under it, is used for passing through hopper chute 28 to principal arm frame conveyer feed when stacker-reclaimer carries out the windrow operation.

At the extreme end of tail jib, hang next rigid arm 32 from pivot 30, balance block 34 is fixed on the lower end of this rigid arm.One end of steel rope 36 ties up on the balance block and extends along roughly parallel with principal arm frame direction, crosses the pulley 38 that is positioned at mast and tail jib junction height, and the other end ties up on the platform 4 on the pitching pivot 6 fwd anchors 40.

When pitching hydraulic actuating cylinder 12 elongation, when rising the principal arm frame (Fig. 2), the distance between anchor 40 and the leading sheave 38 increases, thereby makes steel rope 36 that balance block 34 further is pulled away from plumb bob vertical by pivot 30; On the contrary, when the principal arm frame puts down (Fig. 3), above-mentioned distance shortens, and balance block 34 moves to more close above-mentioned perpendicular line.The configuration of balance block should make it remain to mast to a certain degree inclination, even also should be like this in the position that the principal arm frame fully puts down, remains on tension state to guarantee steel rope.

It should be noted that, when jib structure is mobile between Fig. 2 and position shown in Figure 3, the horizontal throw that occurs between any point on the principal arm frame and the S. A. changes very little, and the variable in distance of the extreme end from S. A. to the tail jib is very big, because the line from the jib afterbody to the pitching center becomes a wide-angle with horizon.The resultant movement of balance block by its pivot 30 move and the balance block steel rope 36 of originally experiencing orders about with respect to the mobile of jib structure and combines, this resultant movement can significantly reduce the moment variations of balance block to the pitching pivot.

The moment variations that can accomplish 34 pairs of pitching pivots of balance block during pitching is in full accord with the variation of the moment that gravity because of equipped principal arm frame produces, thereby any capsizing moment that acts on the rotation circle is remained unchanged.But another result that pitching is moved is that the tension force of steel rope 36 will change from moving of perpendicular line with balance block.The pitching hydraulic actuating cylinder not only will overcome the moment that gravity load acts on the pitching pivot axis, but also will overcome the tension force of steel rope.If it is constant to keep acting on the capsizing moment of rotating on the circle, the pitching hydraulic actuating cylinder will bear bigger load variations, to overcome the variation of steel wire rope tension, usually, preferred design becomes the moment of 34 pairs of pitching pivots of balance block that certain variation is arranged, to reduce the variation of steel wire rope tension.Like this, though the load that will change is moved in the pitching of jib structure and balance block on the rotation circle, but the load variations that pitching hydraulic actuating cylinder and rotation circle stand is all little when not having balance block, and the design maximum load of pitching hydraulic actuating cylinder and rotation circle also can reduce.

In fact, under any circumstance preferably all arrange like this in the flat street of power: promptly as a kind of security measures, make the pitching hydraulic actuating cylinder be subjected to certain compressive force all the time.

Certainly, can do many improvement to said structure within the scope of the present invention.For example, though in the specification sheets example to the very simple face actv. control of the position of balance block, be to utilize the tensioning steel rope on the not pitching part that ties up to pitching and bearing set to realize, but also can utilize other control setup, comprise the device of rigid displacement driving device and actv., drive control.

Claims (6)

1, stacker-reclaimer, has a jib structure that is bearing on pitching and the supporting device for sluing mechanisms (2,4), this structure comprises: a principal arm frame (14) that stretches out forward, along principal arm frame length direction feeding device (16) is arranged, and principal arm frame front end has take out device (20); The one tail jib (22) that stretches out backward has a balance block away from bearing set (34) tail jib to be configured in the position that is higher than the principal arm frame on the tail jib, so that be bont (26) slot milling to this jib feeding device feed; The feature of this stacker-reclaimer is: balance block (34) hangs from above below this tail jib by the pivot (30) on the tail jib (22), this balance block can be below this jib towards or the pivot axis that deviates from bearing set move; Be used to control this device that moves (36), can when principal arm frame (14) rises, make balance block move forward the different moments that produce owing to the weight of jib (14,22) and position with compensation with respect to its pivot.

2, stacker-reclaimer according to claim 1, balance block control setup wherein comprises: one is subjected to the tension element (36) of pitching moving influence, this element ties up on the balance block (34), be used for making balance block to remain on the place ahead of its pivot (30), so this element remains on tension state.

3, stacker-reclaimer according to claim 2, tension element wherein (36) is connected the parts (4) of balance block (34) and pitching and supporting device for sluing mechanisms and goes up between pitching center (6) the fwd anchor (40), and anchor (40) does not participate in pitching and moves.

4, stacker-reclaimer according to claim 3, tension element wherein (36) is upwards extended forward from anchor (40), crosses the guides (38) on the jib structure and face toward balance block (34) from this guides to extend back.

5, according to any one the described stacker-reclaimer in the claim 2 to 4, tension element wherein (36) extends forward from balance block (34) along roughly parallel with principal arm frame direction.

6, according to any one the described stacker-reclaimer in the claim 1 to 4, balance block wherein (34) is such configuration: promptly pitching center (6) maintain one with the oppositely directed downward moment of principal arm frame (14) of ordering about of pitch drive (12) elevate a turnable ladder jib.

Images