DE3513102A1 - Rubbed-off material conveyor with rake - Google Patents

Abstract

A rubbed-off material conveyor which is of simple construction and requires little maintenance has, besides the rigidly arranged collecting trough, a rake which can be displaced via a working cylinder. The said rake is formed by the longitudinally extending rectangular tubes and the carriers which are arranged at right angles to the latter. The said rake is connected to erecting levers in such a way that it is guided tightly over the floor of the collecting trough during the forward stroke and at an appropriately large distance during the return stroke. This ensures that the rubbed-off material which is collected by the collecting trough is in each case pushed in the discharging direction during the forward stroke, while the rake is guided past the heaped up rubbed-off material during the return stroke, in order once again to push the rubbed-off material a bit further during the next stroke. As clamping friction is completely avoided, a favourable level of efficiency is achieved, an extension can be easily achieved thanks to the small number of moving parts and it is possible to set the spacing of the rake in such a way that a short-stroke cylinder can be used in each case. <IMAGE>

Description

The invention relates to an abrasion conveyor for rubber

belts and similar conveyor systems, especially under the handovers to be arranged drip pan for the abrasion and with displaceably arranged therein Driver, which acts on the abrasion in the conveying direction via a working cylinder Push forward and slide over it in the return stroke.

Conveyor systems, in particular rubber belts with endless belts in the area of reversals are often adhered by cleaning devices Goods to be conveyed cleaned in order to prevent these conveyed goods from being conveyed during guidance falls off the belt in the lower strand and leads to contamination of the track. aside from that Such cleaning is particularly important when it comes to the conveyed goods coal or other combustible materials are involved, the fine-grained abrasion of which is caused by the occurrence of Frictional heat tends to ignite.

But also where such cleaning devices are not provided are, there is a falling down of the adhering conveyed material, so that these areas need to be cleaned at regular intervals. To clean this thing by hand which are associated with dangers in a running conveyor system are so-called abrasion conveyors have been developed to collect the abrasion and transfer it to the conveyor system below or another conveyor so that it is conveyed away with the material to be conveyed can be. Abrasion conveyors with a profile channel and back and forth therein are known moved drivers (DE-OS 32 23 372.8). The drivers are via a working cylinder acted upon, over the thus a back and forth movement of the driver or the Profile channel is reached. The drivers, vertical or nearly vertical Flat irons are placed approximately vertically in the conveying direction and with the Return stroke brought into a position that it is over the conveyed material lying in the profile channel or the abrasion slide away. In this way the abrasion becomes intermittent brought to discharge. The disadvantage of the known abrasion conveyors is the ratio great effort for the guidance of the driver or the profile channel, which is, among other things, expresses that on the one hand a lifting cylinder for moving the profile channel or working cylinder is required and for pivoting the driver one or two more cylinders. The articulated arrangement of each individual driver is a further constructive high effort required and also a susceptibility to failure given when one of these joints required for this purpose becomes stuck. Next to Such abrasion conveyors are therefore also correspondingly high production costs characterized by a relatively high maintenance effort.

The invention is based on the object of a simple structure and to create maintenance-friendly abrasion conveyors.

The object is achieved according to the invention in that the driver are arranged and designed to form a rake, alternating in two planes is brought out in the drip pan. The drivers themselves are therefore rigid arranged and form a rigid rake with the connecting side parts, which as such is close to the bottom of the drip tray during the working stroke out and is returned during the return stroke in a second higher level. The large number of joints is dispensed with here, which means that maintenance costs are considerable is decreased. The manufacturing effort is also relatively low, especially since the abrasion conveyor according to the invention practically manages with only three components, namely the rake, the drip pan and a single working cylinder. Through the Training as a rake it is possible at the same time, the individual drivers to be arranged at such a distance that they have a total of only a small thrust return need what advantageously a simple working cylinder with a short stroke. As a result, depending on the amount of abrasion and the length of the abrasion conveyor easily adaptable abrasion conveyor can be created without the basic construction as such must be changed. When increasing the distance between the drivers, for example it is only necessary to use a working cylinder with a larger stroke, while the rest of the construction can be kept unchanged.

According to an expedient embodiment of the invention, the rake double pivoted erecting levers assigned to the end of the rake are slidably guided on the floor and inclined in the conveying direction. With Such a simple construction can be the rake as a whole depending on the position the lifting lever sliding on the floor or moved over it at the specified distance will.

The length of the lifting lever determines the distance between the two levels, so that here, too, by appropriately simple measures or possibly also by extendable trained lifting levers depending on the grain size of the resulting abrasion a safer one The feed in the collecting tray can be secured because the rake is always in the secured position Distance over the coarsest grain of the abrasion is lifted away on the return stroke.

The rake is based on a total of four such lifting levers from, whereby an extension of the entire abrasion conveyor is easily possible is that another pair of lifting levers is attached to a corresponding extension of the Rake is arranged and of course the drip tray is extended accordingly is.

To ensure at the turning point of the working stroke that the rake is lifted into the upper level, it is appropriate that one of the lifting levers has an unlocking nose which is connected to a turning point in the conveying direction above a spring-loaded locking pawl corresponds. Upon reaching the At the turning point, the pawl is brought into such a position by the spring, that it brings the lifting lever into its vertical or approximately vertical position, whereby the unlocking nose is effective at the same time by swiveling up the erecting lever which then pushes the pawl back against the force of the spring, so that the working cylinder pull the rake in the upper level back into its starting position can. If the working cylinder is now extended again, the erecting levers tilt back to its inclined position and the rake is brought to the lower level, where it transports the abrasion in the direction of the discharge when it is pushed forward. During this Movement process, the pawl is in the pushed-back position which it is only pushed out 00er en eqcnt by the spring / when the lifting lever has reached its end point, i.e. the turning point, with the unlocking nose.

To safely prevent unintentional changes to the plane of movement, For example, if the working cylinder is suddenly extended or retracted, Both erecting levers have guide shoes in which they are pivotably mounted and which are connected to one another via a rod. This means that both lifting levers work correspondingly, without pivoting due to lever forces occurring or non-synchronous work can come.

The lifting levers with the unlocking tab on both sides of the rake are controlled synchronously in that they and their guide shoes via a synchronous shaft are connected to each other.

Swiveling the lifting lever too far when lifting into the upper one Level and thus lowering again is prevented according to the invention in that that in the conveying direction front lifting lever and / or the rake a nose limiting the vertical position is assigned. Against this nose will the front erecting lever in the conveying direction is pressed when the rake is in the upper Position is raised so that it is then withdrawn secured in this upper level can be. All movements are carried out by applying one and the same Working cylinder without the need for further mechanically moving parts.

A secure connection between the working cylinder and the rake is established even when the hub in the different levels is made sure that the Rake is connected to the pivoted working cylinder via a joint.

The working cylinder is thus in each position by the rake brought or swiveled without forces acting on the rake, which is to be used in the simple construction described.

A lateral advantageous guidance of the rake is given by that the rake of continuous and parallel square tubes and formed at right angles to and connected to them flat iron is and that the lifting lever via a carrier at a distance from the square tubes and a guide plate arranged therebetween and standing on the bottom of the drip tray are kept inclusive. This creates a stable rake on which both the lifting lever can be securely attached as well as the working cylinder, the however, for the sake of simplicity, it is posted on the last driver without a further construction is required for this. These side square tubes are connected to the erecting levers so that a slot remains in between the guide plate is arranged. As can be seen, this is a simple one and created very useful lateral guidance.

In order to avoid disadvantageous friction, the guide plate One or both sides a sliding-friendly plastic plate, i.e. one Kind of coating on. The righting lever or the square tube therefore do not rub directly on iron, but rather on the slip-friendly plastic, like this that even adverse heat loads cannot occur here.

Another way to do the rake in each two different Levels in the direction of conveyance and in the opposite direction is to lead, one in which Over the length of the drip pan on both sides of the rake rolls and from the rollers alternately drivable guideways are arranged one above the other, the upper guide track on both sides opposite the stroke length of the working cylinder is designed to be shortened by a little more than the roll diameter. The roles diminish the occurring friction and thus result in a reduction in the necessary driving forces, where they each roll on different guideways, so that they once on the bottom of the collecting tray and slide over it once at the appropriate distance. The guideways are designed so that the rollers each at the turning points being able to glide over from one level to the other.

The change from one guideway to the other is according to the invention achieved in that the distance between the rolling surfaces of the guideways is the height of the The driver is appropriately sized and formed run-off or run-up bevels on both sides are. On the one hand, the rake equipped with rollers rolls from the top into the lower guideway or at the other turning point from the lower to the upper guideway. There is no continuous change over via the run-off or run-up slopes further possible.

Rolling up over the run-up slope from the lower to the upper Guideway is achieved after a suitable design of the abrasion conveyor, in that the front part of the upper guide track in the conveying direction is folded down from one in the State in the direction of conveyance sloping downwards, pivotably attached and is formed as a ramp serving flap. This flap is off the roll pushed up on the forward stroke so that the role can easily pass. Shortly before the turning point, the flap falls down because the role continues is and thus forms the run-up slope on which the role then during the backward stroke can be brought into the upper guideway without difficulty.

A simple and practical design of the drainage slope sees before that the rear part of the lower guide track in the conveying direction of an in Direction of conveyance sloping downwards and serving as a drainage slope is formed. The roller slides over the upper guideway onto the inclined buffer piece and is then transferred from this to the lower guide track. The buffer piece is expediently made of elastic material, so that too In the event of jerky operation, damage to the rollers or the rake cannot occur.

The distance between the two guideways is an appropriate one Formation of the invention can be easily adapted to the particular circumstances in that the upper guide track can be adjusted vertically with the U-profile forming the side wall connected is. Depending on the need, the upper guideway can be raised or lowered, i.e.

mounted with a larger or smaller distance to the lower guide way, depending on which material is to be expected or

At what time intervals the abrasive conveyor are operated target. Such training is then easy Kind of avoided, that during the backward stroke the accumulated abrasion caused by the retracting carrier is removed and thus reduced in height.

Lateral guidance is also useful in this training created by the fact that the roles on carriers at a distance to the rake co-forming Edging square tubes and a guide plate standing vertically on the floor are held, the guide plate coated with sliding-friendly plastic is. When moving back and forth, i.e. the forward stroke and the return stroke, the the rake is guided safely and easily, with the square tube on the slide-friendly one here too Plastic is passed by, which reduces friction losses to a minimum will.

If there are problems in the collecting basin due to thick lumps, screws or the like, the roles can advantageously evade, since the upper guide way as angle iron held by frictional engagement on the side wall is formed.

The guideway can be pushed up without causing damage occur in the individual parts of the drip tray.

With suitable additions, for example spring assemblies, it is also possible at the same time care must be taken that the guideway is then restored is pushed back into its original position.

The invention is particularly characterized in that an im Structure of a simple abrasive conveyor is created, which is moved by its few Parts has little wear and tear and also requires little maintenance for the rest. With a few additional measures or movements, the distance between the two Levels in which the rake is performed can be adapted to the respective conditions, so that the versatility of such an abrasive conveyor is very great.

Further details and advantages of the subject matter of the invention result from the following description of the accompanying drawing, in which a preferred Embodiment shown with the necessary details and parts is. 1 shows an abrasion conveyor in side view in the starting position, FIG. 2 shows the abrasion conveyor according to FIG. 1 in the end position of the forward stroke, Fig. 3 the abrasion conveyor in the initial position of the return stroke, FIG. 4 the abrasion conveyor in the end position of the return stroke, FIG. 5 shows an abrasion conveyor according to FIG. 1 to FIG. 4 in cross section, FIG. 6 shows an abrasion conveyor with two plane guideways, and FIG. 7 shows the abrasion conveyor according to FIG. 6 in cross section.

The abrasion conveyor shown schematically in a side view in FIG. 1 1 consists essentially of the drip pan 2, the carrier 3, 4 and the square tube 6 assembled rake 5 and the working cylinder 7.

The working cylinder 7 is pivotably attached via the bearing 8, so that he, as FIGS. 3 and 4 show, on the return stroke of the rake 5 in the upper Level is inclined in each case. Rake 5 and working cylinder 7 are through this a joint 9 connected to one another.

The movement of the rake 5 in two planes is achieved by that erecting levers lo, 11 are arranged on both sides over the length of the rake 5. These righting levers are on the joints 12, 13 once with the rake 5 and to others connected to guide shoes 17, 18. The erecting levers are in the conveying direction 15 lo, 11 inclined forward, while on the return stroke, as shown in FIGS. 3 and 4, stand vertically. Through their connection or through the assignment of the guide shoes 17, 18 is a simple guide on the floor 16 of the drip pan 2 or the latter assigned side panels.

As illustrated in FIGS. 1 to 4, the rake 5 is over the working cylinder 7 displaced in the conveying direction so that the drivers 3, 4 are just above the floor 16 get lost.

As a result, they take away the debris that has accumulated in the collecting tray 2 with and bring this in the direction of the discharge of the abrasion conveyor 1. Since the force of the Working cylinder 7 acts on the upper joints 12, it is ensured that the Erecting levers lo, 11 remain in position during movement in conveying direction 15 and so that the drivers 3, 4 really take the abrasion with them.

When switching the working cylinder 7 according to FIG. 3, the Raising lever lo, 11 and lift the rake 5 in the upper level. This Erecting is secured in that in the area of the with an unlocking nose 19 equipped righting lever lo a loaded by a spring or CnGegenkLFIL 21 Locking pawl 22 is arranged. This pawl is through the guide shoe 17 locked on forward stroke.

Only when the front turning point 20 is reached is the pawl 22 raised by the spring 21. When the backward stroke is applied, the pawl guides 22 to the fact that the erecting lever equipped with the unlocking nose 19 lo securely so tilts that both erecting levers lo, 11 are in the vertical position. About the unlocking nose 19 there is a deactivation of the pawl 22, so that the working cylinder 7 the Rake 5 can easily withdraw in that shown in FIGS. 3 and 4 upper level. The two guide shoes 17, 18 are, in order to ensure synchronization, connected by the rod 23.

Upon reaching the rear turning point 24 and pulling in the Piston rod 27 of the rake 5 initially remains in the upper level. Only when it starts again Forward stroke tilt the erecting levers lo, 11 into the one shown in FIGS. 1 and 2 Position so that the drivers 3, 4 then the abrasion again push the bottom 16 forward in the direction of the discharge. About the synchronizer shaft 26 are the righting levers lo connected to each other on both sides so that one is the same Insertion is guaranteed.

The erecting lever 11, which is at the front in the conveying direction 15, is when erecting limited by the nose 25 so that swiveling cannot occur. Consequently a simple and functional safeguard is created.

The synchronizer shaft 26 is clearly shown in Fig. 5, while the upper shaft or the upper joint 12 held by a bushing 30 Bolt 31 is shown. This socket 30 is held by a carrier 29 which connected to the square tube 6, for example welded. The square tube 6 in turn forms the rake 5 with the flat iron 28.

Fig. 5 shows a working position of the rake 5 in the situation of Return stroke again, the forward stroke being indicated by 5 '. This becomes clear also shows how far the two planes of movement of the rake are given.

In order to reduce the sliding friction on the individual levels as much as possible, are on the sliding surfaces 32, 33 at nesteneme for example from reducing friction Plastic plates applied, according to FIG. 5 with the bottom 16 or the flange 37 are screwed. The flange 37 is part of the side wall designed as a U-profile 36.

On the floor 16 of the collecting trough 2 stands between the bolt 31 or the upper joint 12 and the square tube 6 a guide plate 34 so upright, that it is enclosed between the two at least on two sides or even three sides is. At least on the side of the guide plate 34 facing the square tube 6 a plastic plate 35 attached to keep friction losses as low as possible.

Fig. 6 shows an embodiment in which the rake 5 laterally Has rollers 40, each arranged on two in different planes Roll off guideways 41, 42. The upper guide track 41 is on both sides Shortened by about the roll diameter to allow the roll 40 to be changed from one to the other to reach another level.

For this purpose, the front end of the upper guide track in the conveying direction 15 is 41 designed as a run-up slope 44 in the form of a flap 46. The flap 46 is initially raised by the roller 40 to be lowered after driving through it to be that the roller 40 on the return stroke automatically in the upper level, i. the upper guide track 41 moves.

The upper guide track 41 or the lower guide track has at the other end 42 a drainage slope 43, preferably in the form of a buffer piece 45. The role slides down on this buffer piece 45 made of elastic material and then rolls into the lower guide track 42. Fig. 6 shows how easy a change is from the upper to the lower guideway is possible.

FIG. 7 gives a partial section of that shown in FIG Training of the abrasion conveyor again. Here, too, the rake 5 is through the square tube 6 and the drivers 3, 4 are formed. With the square tube 6 via a carrier 29 are the rollers 40 connected. This roller 40 moves in the upper guide track 41 and dashed lines in the lower guide track 42.

At the same height as the bottom 16 of the drip pan 2 is located in the embodiment according to FIG. 7, the lower one Flange 37 of the U-shaped formed side wall 36. Both are a stable whole via the support plate 47 connected to form.

On the inside of the web 38 of the side wall 36 is the one Angle iron 48 formed guide track 41 attached. It is held by a retaining screw 49 fixed to the web 38, whereby the position can be varied vertically by that the retaining screws 49 through an elongated hole 50 formed in the angle iron 48 leads.

The adjustability of the upper guide track explained in FIG. 7 41 or the angle iron 48 forming it can be used simultaneously or in addition in the event of malfunctions in the collecting tray 2 of the upper guideway 41 to give a limited mobility. The angle iron 48 and thus the corresponding Guide track 41 is automatically pushed up because the retaining screw 49 is only frictionally engaged is attracted. For example, against the upper flange of the side wall Supporting spring arrangements can also be ensured that the upper guide track 41 or the angle iron 48 after the fault has been eliminated, for example is pushed back into its original position by screws or chunks.

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Claims (16)

Abrasion conveyor with rake Patent claims 1. Abrasion conveyor for rubber belts and similar conveyor systems, in particular collecting basins to be arranged under the transfers for the abrasion and with slidably arranged drivers that have a Working cylinder acts on the abrasion in the conveying direction push forward and in Slide over the return stroke, characterized in that the drivers (3, 4) a rake (5) are arranged and designed to form, which alternately in two Levels can be moved in the drip pan (2). 2. Abrasive conveyor according to claim 1, characterized in that the Rake (5) are assigned to double pivoted erecting levers (lo, 11), the end of the rake sliding out on the floor (16) and are arranged inclined in the conveying direction (15). 3. Abrasive conveyor according to claim 2, characterized in that one the erecting lever (lo) has an unlocking nose (19) which is connected to an on in the conveying direction (15) lying turning point (20) loaded by a spring (21) arranged pawl (27) corresponds. 4. Abrasion conveyor according to claim 2 and claim 3, characterized in that that both righting levers (lo, 11) have guide shoes (17, 18) in which they pivotally mounted and which are connected to one another via a rod (23). 5. Abrasion conveyor according to claim 2 and claim 4, characterized in that that the righting lever (lo) with unlocking nose (19) and its guide shoes (17) over a synchronizer shaft (26) are connected to one another. 6. abrasion conveyor according to claim 2, characterized in that the in the conveying direction (15) front erecting lever (11) and / or the rake (5) a the vertical position limiting nose (25) is assigned. 7. abrasion conveyor according to claim 2, characterized in that the Rake (5) with the pivoted working cylinder (7) via a joint (9) connected is. 8. Abrasion conveyor according to claim 2, characterized in that that the rake (5) of continuous and parallel square tubes (6) and at right angles to it and connected to them flat iron (28) is formed and that the erecting lever (lo, 11) via a carrier (29) at a distance to the square tubes (6) and one in between, on the floor (16) of the Catch pan (2) are held enclosing upright guide plate (34). 9. Abrasion conveyor according to claim 2 and claim 8, characterized in that that the guide plate (34) on one or both sides a slide-friendly plastic plate (35). lo. Abrasion conveyor according to claim 1, characterized in that over the length of the collecting tray (2) distributed on both sides of the rake (5) rollers (40) and guide tracks (41, 42) that can be driven alternately by the rollers, one above the other are arranged, the upper guide track opposite the stroke length of the working cylinder (7) is designed to be shortened on both sides by a little more than the roller diameter. 11. Abrasive conveyor according to claim lo, characterized in that the distance between the rolling surfaces of the guideways (41, 42) the height of the drivers (3, 4) is appropriately sized and formed run-off or run-up bevels (43, 44) on both sides are. 12. Abrasive conveyor according to claim lo and claim 11, characterized in that that the in the conveying direction (15) front part of the upper guide track (41) of a when folded down in the conveying direction diagonally downward, pivotable attached and serving as a ramp (44) flap (46) is formed. 13. Abrasion conveyor according to claim lo and claim 11, characterized in that that in the conveying direction (15) the rear part of the lower guide track (42) of a sloping downward in the conveying direction and serving as a drainage slope (43) Buffer piece (45) is formed. 14. Abrasive conveyor according to claim lo, characterized in that the upper guide track (41) is vertically adjustable with that forming the side wall (36) U-profile is connected. 15. Abrasive conveyor according to claim lo, characterized in that the rollers (40) over supports (29) at a distance from the square tubes forming the rake (5) (6) and enclosing a guide plate (34) standing vertically on the floor (16) are held, the guide plate coated with sliding-friendly plastic is. 16. Abrasive conveyor according to claim lo, dad lurch g e k e n n z e i c h n e t that the upper guide track (41) than by frictional engagement on the side wall (36) held angle iron (48) is formed.