DE10115071A1 - Bucket unloader for ships has double chain wheels mounted on frame so that chains follow closed triangular path, overflow chute near top feeding unloaded material to horizontal conveyor if there is flaw in back wall of bucket - Google Patents

Abstract

The bucket unloader has double chain wheels (13 - 15) mounted on a frame (12) so that the chains (21) follow a closed triangular path. An overflow chute (24) near the top feeds unloaded material to a horizontal conveyor if there is a flaw in the back wall of one of the buckets (21b).

Description

The invention relates to a Gutnahmorgan for a continuous Ship unloaders according to the preamble of the main claim. Two of these Receiving devices are paired at the lower free end of a arranged with a vertical conveyor unloading trunk. she are particularly suitable for bulk goods with abrasive properties and larger Grain suitable. The bulk goods are continuously from the receiving body picked up, handed over to the vertical conveyor and in the unloading trunk promoted upwards.

Continuous ship unloaders with a bucket elevator are known are equipped, not only for vertical support, but also for bulk material pick-up is provided. For the bulk material pickup, the Bucket elevator foot specially trained. It is because of the bulk solids exposed to high loads and consists of one in the reception area horizontal or almost horizontal and in the conveying area from one vertical or almost vertical section leading upwards. In addition, such bucket elevators are provided with a free end Provide tensioning device. Such a solution is according to EP 0 748 750 B1 known. The frame for the bucket elevator consists of an upper, larger one Section in the area of the conveyor trunk and a smaller lower section for acceptance. Both sections are hinged together. The smaller lower section, which forms the bucket elevator foot, is opposite conveyor section leading upwards through an adjusting cylinder in its Adjustable position. Thus, a horizontal crop receiving section can be set. When removing residual material, the bucket elevator foot of the actual position of the load floor can be adjusted. Through a Another adjustment cylinder is the free end of the bucket foot Chain tension telescopically adjustable. Another adjustment option of the Bucket elevator is provided with a third adjusting cylinder, the one at the bottom Area of the conveyor trunk between the housing and the framework of the  Bucket elevator foot is arranged and for fine adjustment of the height of the Bucket elevator foot especially for emptying residual goods for regulation opposite the cargo floor. Although the bucket elevator only works in Good reception area is exposed to high loads, it must be overall be robustly trained. The associated higher mass of Delivery probes affect the entire device.

The separate recording and vertical promotion of the Bulk working continuous ship unloaders are used for specific operating conditions optimized. For bulk goods with abrasive Properties and larger grain size are suitable as good reception organs especially bucket elevators and paddle wheels. So in the trade magazine "Bulk solids handling", year 8, issue 1 from February 1st, 1988 on the pages until under the heading "Continuous Ship Unloaders from Krupp" continuous ship unloader shown and described with a Paddle wheel is equipped as a good reception organ. The one in the hold Bulk goods located on the ship are picked up with the paddle wheel, in Semi-circle promoted upwards and from its upper position over a Pass the chute to a vertical conveyor and from there through the Hatch opening moved out of the hold. With such, after This operating principle can discharge high Funding services are achieved. The paddle wheel is together with the Unloading trunk pivotable about the longitudinal axis of the unloading trunk, so that in the Cargo space with the receiving member also an area larger than that Hatch opening is accessible. Because of the wheel circumference and not or only partially accessible edge and corner areas in the cargo area cannot be fully reached and recorded, it is necessary To provide auxiliary work for residual emptying.

Another functional principle for a separate crop pickup with Subsequent vertical conveyance consists of one with one Bucket-equipped equipment, from which the bulk material like described above, is passed to a vertical conveyor. The Bucket elevator is guided over three double sprockets, their  horizontal parallel axes are arranged in a triangle. Such a receiving element is known from DE 44 05 944 A1. It's through an adjustment cylinder in its position relative to the conveyor trunk. There is another adjustment cylinder between two sprockets for change their distance from each other and thus for tensioning the bucket elevator intended. The bulk material is taken up by the lower beakers, in conveyed this diagonally upwards and when deflecting over the upper double Chain wheel emptied onto the vertical conveyor via a chute.

The invention has for its object a Gutnahmorgan for one to develop continuous ship unloaders, especially for bulk goods abrasive properties and larger grain size is good Emptying of residual goods and transfer of goods to the subsequent vertical conveyor enables and that with sudden changes in altitude, for example caused by the wave motion of a passing ship, can dodge upwards.

This is achieved in that two acceptance organs with a lower, straight receiving area at the bottom of the scaffold towards each other Directed chain movement are arranged, the Gutnahmorgane are both pivotable by an adjusting member as well possess the required degree of freedom when touching the Good reception means with the floor of the loading space in their position automatically to adapt and easy emptying of the goods receiving means and Handover to the vertical conveyor is possible.

This object is achieved with the features of the main claim. There with Bulk material with abrasive properties and larger grain in terms of Wear behavior at the picking up and conveying particularly high A bucket chain is provided if requirements are made. This Bucket chain is guided over three double sprockets so that in Direction of movement first a lower straight crop receiving section, then a diagonally upward leading section, at the end of which  the credit is located, and then the shovel chain Return section is traversed. Because the blades on their inside have no wall, is used to secure against falling out in the area the redirection by the double sprocket, which the recording area finished, a ring chute sheet arranged, the one at an angle upwards leading take-along section a rigid drag plate or moving trailing belt follows. At the end of this drag plate or - The bulk material automatically falls out of the shovels into a belt Intake chute and is on the vertical conveyor of the ship unloader directed.

The Gutnahmorgane are on the supporting structure of the Vertical conveyor and each oscillating about a horizontal axis at a second, a horizontal distance from this storage exhibiting point hung. So that a good reception organ in his Can be swiveled around the horizontal axis is in the Suspension integrated a lifting cylinder. This allows the lower one to be straight Acceptance section from the operator into the for the unloading process most convenient location. Will the Gutnahmorgan through Bulk goods or the load floor from the bottom a resistance set, there can be an evasive movement by itself around the pivot axis To run. This is the hydraulic system for the lifting cylinder designed accordingly.

Advantageous embodiments of the invention are the subject of Dependent claims. Due to the concave formation of the chain-side edges of the Blades are in the critical deflection area of the filled blades between the goods receiving and goods taking section by the uniformly wide gap between the blade edges and the Ring chute sheet created favorable kinematic conditions. Even though this advantage is in a straight line leading upwards Good driving section through a circular segment-shaped gap width into one The disadvantage is covered by the straight conveying direction of the kinematic Process of good management and good take-away not disrupted. The decision  about whether a rigid drag plate or a moving drag belt used depends on the specific conditions of use and judges the wear and tear and the costs involved. Through the two Longitudinal guides of the main girder of the loading device and the link arm can absorb larger lateral forces caused by the feed become.

Further advantages of the subject of the invention are based on the following Description and the accompanying drawings, in which a preferred embodiment is shown. Show it:

Fig. 1 is a side view with two pairs arranged at Entladerüssel Gutaufnahmeorganen,

Fig. 2 shows the section AA of Fig. 1 through the 4-belt shaft of the vertical conveyor,

Fig. 3 shows a single, equipped with a drag tape loading member in a side view;

Fig. 4 is a detail view of the lateral guidance of the swing rod in section,

Fig. 5 is a section through the bucket chain in the area of the trailing sheet of FIG. 1,

Fig. 6 is a detail view of the side guide of the main carrier of the charging member in section;

Fig. 7 is a plan view of the two paired loading elements according to Fig. 1 and

Fig. 8 shows a solution variant with a sheet metal swing arm in a side view.

The lower region of the unloading trunk with the supporting structure 1 is shown in FIG. 1 of a continuous ship unloader. The supporting structure 1 accommodates a vertical conveyor 2 which, as is known from the patent DE 33 15 078 C2, is designed as a belt conveyor with a 4-belt shaft. As is also shown in FIG. 2, it consists of the conveyor belt 3 equipped with driver strips, the cover belt 4 arranged parallel thereto, and the two side belts 5 and 6 . Conveyor belt 3 and cover belt 4 run below over the tension drums 7 and 8 and are held in their path along the conveyor path by guide and pressure rollers 9 and 10 .

Two identical loading elements are provided for receiving goods, which are arranged in pairs in opposite directions on both sides of the supporting structure 1 in a pivot point 11 . According to Fig. 3, each of the two loading elements consists of an angled main carrier 12 , at the two ends of which a double sprocket 13 and 14 is mounted. To accommodate a third double sprocket 15 , a rod rocker 16 is provided, which is mounted at the bottom of the main carrier 12 in a joint 17 . With the free sprocket-side end of this rod rocker 16 , a tensioning device 18 articulated on the main carrier 12 is in functional connection. The clamping device 18 here consists of a spindle 18 a and a spindle nut 18 b. However, it could also consist of a tensioning cylinder or another known device. The rocker arm 16 , the tensioning device 18 and the main support 12 together form a triangle.

The rod rocker 16 is stabilized by a side guide 19 . It consists of two profiles 19 a; 19 b, which, as shown in detail in FIG. 4 in section, are fastened to the main support 12 and have straight sliding surfaces on the side of the rocker arm 16 . For receiving the bulk material 20 and transport to its transfer to the vertical conveyor 2 is a bucket chain 21 is provided, as shown in FIGS. 1 and 3 in a side view and Fig. 5 in section, of a two-strand link chain 21 a with it attached blades 21 b. This blade chain 21 runs over the three double sprockets 13 ; 14 ; 15 in a triangular path, the area between the two double sprockets 15 and 14 on the rocker arm 16 and the lower end of the main support 12 forming the crop receiving section. This is followed by the take-along section, which ends at the delivery point, in a sloping straight line. Then follows between the two double sprockets 13 and 15 at the upper end of the main carrier 12 and the rod rocker 16 of the downward returning vane chain section. The upper double sprocket 13 is equipped with a drive 30 . So that the bulk material 20 is securely carried in the blades 21 b after it has been received in the lower horizontal section when deflecting into the sloping still extending driving section, an annular chute plate 22 is arranged on the inner wallless side of the blades 21 b in the region of the double chain wheel 14 , As a continuation of this function of good guidance, a trailing drag belt 23 a is provided in the following good driving section. Instead of this drag belt 23 a, a drag plate 23 b can also be used. The first variant with the drag belt 23 a is shown in FIG. 3 and the second variant with the drag plate 23 b in FIG. 1 in a side view and according to FIG. 5 together with the blade chain 21 in section. The drag belt 23 a can either run freely due to the friction with the bulk material 20 or run synchronously by means of a self-propulsion. To avoid Schleißkraft between the edges of the vanes 21b and the sliding plate 23 are mounted laterally on the sliding plate 23 b support rollers 35 for the link chain 21 a b. By placing the link chain 21 a on these support rollers 35 , a gap between the edges of the blades 21 b and the drag plate 23 b is always maintained. Where the towing belt 23 a or the towing plate 23 b ends, the material transfer section begins on the chute 24 arranged below it. The material to be conveyed 20 is guided onto the vertical conveyor 2 through the chute 24 .

So that the crop receiving member can be pivoted about the pivot axis 11 into the intended position, a lifting cylinder 25 is arranged on the support structure 1 of the vertical conveyor 2 . It is connected via a double link 26 to a suspension structure 27 belonging to the receiving element. All of the structural members belonging to this lifting and adjusting mechanism are dimensioned such that a constraint-free movement of the goods receiving member is possible within the limits specified by the specific area of application and no lateral forces act on the lifting cylinder 25 . The angling of the main support 12 shown in FIGS . 1 and 3 serves for sufficient freedom of movement when adjusting the material receiving member. So that the lateral forces arising during the receiving of goods are not transmitted from the receiving member to the supporting structure 1 solely via the bolt 28 , a fork-shaped guide 29 , shown as a detail in FIG. 6, is provided for lateral stabilization of the main support 12 on the supporting structure 1 the support structure 1 attached to each other parallel profiles 29 a with guide surfaces, between which the main beam 12 can move freely vertically and is held laterally. Both profiles 29 a are connected to each other for greater stability above and below by a cross strut 29 b. For better function and longer service life of the guide, the main support 12 can be provided with a sliding plate 29 c on each side.

The inner edges of the blades 21 b are provided with the same radius of curvature as the curved ring chute plate 22 . As a result, good sealing of the blades 21 b filled with bulk material 20 is achieved in the critical deflection area. The arcuate enlargement of this gap between the radius of the inner edges of the blades 21 b and the. The drag belt 23 a or the drag plate 23 b, on the other hand, is not so critical with regard to a possible loss of bulk material, since there are no movement components directed at right angles to the conveying direction in the case of a straight conveying path. With the use of a scoop chain 21 for the crop receiving member, the advantages of a cup conveyor and a scoop wheel and a bucket chain, as known in opencast mining equipment, are combined. When the crop is picked up in the lower horizontal region, the blade chain 21 can deflect upward in the event of sudden forces. In the area of the deflection in the double chain wheel 14 , the blade chain 21 behaves like a blade wheel because the blades 21 b are covered on their open side by the ring chute plate 22 during deflection and are still completely filled with bulk material 20 . In the area that subsequently rises, the blades 21 b are closed at the bottom by the drag belt 23 a or the drag plate 23 b and act like a cup conveyor.

As shown in Fig. 1 and 7, the Senkrechförderers be placed 2 two equally formed charging organs in opposite Gutaufnahmerichtung to the support structure 1. The drives 30 for the blade chains 21 are preferably arranged on the inside on the mutually facing sides in the case of the double chain wheels 13 and are largely protected from external influences. The other two double sprockets 14 , 15 either run freely or the two lower double sprockets 14 , 15 are forced to synchronize by an additional chain, as a result of which a defined sag of the blade chain 21 is predetermined and maintained.

At the ends of the drag belt 23 a or the drag plate 23 b, the bulk material 20 automatically falls into a common chute 24 , from where it is directed onto the vertical conveyor 2 .

When unloading, the unloading trunk of the ship unloader is pivoted through the hatch opening into the cargo hold. In the case of smaller hatches, the two goods receiving members can be drained through the lifting cylinder 25 and thus take up a small expansion. In the loading space, the two goods receiving elements are brought back into the working position indicated by the horizontal position of the goods receiving area before being placed on the bulk material, and the drives 30 are switched on. A wide bulk goods pick-up area is covered by the goods pick-up elements facing outwards in the opposite direction. The lateral forces which act on the vane chain 21 during the feed movement over the bulk material 20 are kept low by the small individual lengths of the horizontal crop receiving areas limited by the two lower double sprockets 14 and 15 . When emptying the remaining goods, the two goods receiving elements can independently adjust to the position of the loading space floor due to the pivotability about the pivot point 11 , because the good receiving element is freely movable in the horizontal pivot axis 11 with its main support 12 relative to the supporting structure 1 and in vertical, from the ship floor or from The material to be conveyed against the goods receiving element is first pivoted upward by forces of a certain minimum size from the lifting cylinder 25 and at the same time a pivoting up of the boom with the conveyor trunk is triggered by actuation of the boom lifting cylinder, the difference in mass first causing the goods receiving member and then the boom with the conveyor trunk to move be transferred. If a tension spring is integrated into the suspension structure 27 with such a tensile force that the empty grave organ just barely rests on the bulk material 20 , only a small force is required to lift the digging organ by the lifting cylinder 25 , or the grave organ already leads with a small one Counter force of the loaded bulk material 20 from a compensating movement upwards.

Instead of a rod rocker arm 16 , a sheet metal rocker arm 32 can alternatively be used according to FIG. 8. It consists of two parallel sheets 33 which are connected to one another by struts 34 . A sheet metal swing arm 32 designed in this way can absorb greater lateral forces. In the case of a u-shaped design of the metal sheets 33 as shown in the drawing, their lower edges of the blade chain 21 offer resistance against counterpressure by the bulk material 20 , so that the blade chain 21 is not pushed upwards.

Claims (12)

1.Good receiving element for a continuous ship unloader, which is arranged at the lower free end of the end loading trunk equipped with a vertical conveyor ( 2 ), the receiving element consists of a support frame and three double chain wheels ( 13 , 14 , 15 ), over which an endless rotating scoop consisting of two link chains is guided and a double sprocket ( 15 ) with a tensioning device ( 18 ) is in functional connection, the scoop one after the other an almost horizontal or inclined section (the Good receiving section), an inclined section (the good take-away and good delivery section), and a downward leading section (the scoop return section), characterized in that the good receiving member consists of a main carrier ( 12 ), at one end in a joint ( 17 ) a swing arm ( 16 ) angeo rdnet is and at the two ends of the main support ( 12 ) and the free end of the rocker arm ( 16 ) double chain wheels ( 13 , 14 , 15 ) are mounted, over which a chain of blades ( 21 ) is guided in a triangular path, the Area between the two double sprockets ( 14 ; 15 ) on the rocker arm ( 16 ) and the lower end of the main carrier ( 12 ) the crop receiving section, the area between the lower end of the main carrier ( 12 ) until the end of an additional crop guide the crop carrying section, which is from the upper double chain wheel ( 13 ) Deflected area forms the material delivery section and the area between the two double sprockets ( 13 , 15 ) at the upper end of the main carrier ( 12 ) and the rocker bar ( 16 ) forms the blade chain return section, between the main carrier ( 12 ) and the free end of the bar rocker ( 16 ) a tensioning device ( 18 ) is provided, the chain-side interrupted walls of the blades ( 21 b) in the deflection area of the double sprocket ( 14 ) at the lower end of the main carrier ( 12 ) by an annular chute plate ( 22 ) and between the lower and the upper end of the main support (12) located Gutmitnahmeabschnitt is completed by a sliding plate (23 b) and between the Au enkanten of the blades (21 b) and the Ringschurren- and the sliding plate (22, 23 b) a gap is provided and at the end of the drag plate (23 b) the conveyed material (20) filled in front of the deflection from the rising portion in the return section from the blades (21 b) falls by itself out of the blades (21 b) by the absence of the blade rear walls and a takeup (24) is arranged in the falling direction of the conveyed material (20) through which the bulk material (20) on a transfer shaft (31) a vertical conveyor ( 2 ) arranged in the proboscis is guided, the goods receiving element is arranged in a first attachment by its main support ( 12 ) above in a horizontal pivot axis ( 11 ) on the support structure ( 1 ) and in a second attachment between the support structure ( 1 ) and the double chain wheel ( 17 ) furthest from the horizontal pivot axis ( 11 ) is a suspension device, 2. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that the suspension device for the Gutnahmorgan from a rigid at the free end of the main support ( 12 ) arranged fastening member ( 26 ), a on the support structure ( 1 ) arranged lifting cylinder ( 25 ) and there is a double link ( 26 ) arranged between the suspension construction ( 27 ) and the lifting cylinder ( 25 ), the longitudinal axes between the lifting cylinder ( 25 ) with the double link ( 26 ) and the connections of the double link ( 26 ) through the suspension construction ( 27 ) the double sprocket ( 14 ) furthest away from the horizontal pivot axis ( 11 ) form an angle deviating from the straight line and the connections of the lifting cylinder ( 25 ) with the supporting structure ( 1 ) and the suspension structure ( 27 ) with the double link ( 26 ) Joints are. 3. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that the bucket closure in the region of the obliquely upward conveyor section alternatively consists of a moving drag belt ( 23 a), which is either provided with a drive or by friction to the bulk material 20th starts to rotate. 4. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that the outer edges of the blades ( 21 b) are concave or straight and, with concave shape, the curvature of the radius equal to the outer radius of the blade closure in the region of the double chain wheel ( 14 ) and are adapted to the drag plate ( 23 b) with a straight edge. 5. Good reception organ for a continuous. Ship unloader according to claim 1, characterized in that a vertical guide ( 29 ) is provided on the supporting structure ( 1 ) with two mutually directed guide surfaces, between which the main support ( 12 ) is held freely movable and at right angles thereto and between the two sliding surfaces a cross strut ( 29 b) is attached as the upper and lower limit of the pivoting movement. 6. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that on the main support ( 12 ) a side guide ( 19 ) is provided with two mutually facing guide surfaces, between which the rod rocker ( 16 ) is held freely movable and at right angles to it. 7. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that instead of the double sprockets ( 13 , 14 , 15 ) double chain drums are provided. 8. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that instead of a rod rocker ( 16 ), a sheet metal rocker, consisting of two parallel to each other and connected by struts interconnected individual sheets, is provided. 9. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that the drive of the blade chain ( 21 ) on the upper double sprocket ( 13 ) and the other two double sprockets ( 14 , 15 ) rotate freely or the two lower double - Chain wheels ( 14 , 15 ) are forced to synchronize by an additional chain, whereby a defined sag of the blade chain ( 21 ) is predetermined and maintained. 10. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that the Gutnahmorgan by its main carrier ( 12 ) relative to the support structure ( 1 ) in the horizontal pivot axis ( 11 ) is freely movable and in vertical, from the ship's floor or from the conveyed good the Gutnahmorgan counter-directed forces of a certain minimum size are first pivoted upwards by the lifting cylinder ( 25 ) and, at the same time, a swinging up of the boom with the conveyor trunk is triggered by actuation of the boom lifting cylinder, the difference in mass first setting the crop receiving member in motion and then the boom with the conveyor trunk become. 11. Gutnahmorgan for a continuous ship unloader according to claim 1, characterized in that on both sides of the drag plate 23 b for the blade chain 21 support rollers 35 are arranged and by means of the support rollers 35, the blades 21 b are guided over the drag plate 23 b that between the outer edges of the blades 21 b and the drag plate 23 b a gap is maintained. 12. Double goods receiving member for a continuous ship unloader according to claim 1, characterized in that a second goods receiving member is arranged on the opposite side of the supporting structure ( 1 ), the effective range of which, however, is opposite to the effective range of the first receiving member and the receiving chutes of both receiving members in lead a common transfer shaft to the vertical conveyor.