EP3565670B1 - Processing system - Google Patents

Description

The invention relates to a processing plant, in particular a crushing plant, in particular a rock crusher for natural stone processing and for the recycling of demolition materials, with a filling unit which can be filled with a material to be crushed. A sieve unit is arranged in the conveying direction after the filling unit and can be set in oscillatory motion by means of a vibration exciter. A first part of the material supplied is fed to a breaking unit via the sieving unit, and a further part is sieved out in the sieving unit. The screened-out part of the material is fed to a conveyor unit in a bypass position by means of a flap that can be adjusted about a swivel axis, either past a crushing unit conveyor to a crusher discharge conveyor, or is conveyed out of a working area of the processing system in a conveying position by means of a conveyor device. Bearing sections of a bearing are coupled to opposite sides of the flap and are rotatably mounted on the conveyor unit. CA1042404 A shows a corresponding processing plant, according to the preamble of claim 1.

Such crushing plants are used to crush rock material and are used either as mobile or as stationary plants. The material to be broken is filled into the system via the filling unit. Excavators are usually used for this. Starting from the filling unit, the material to be shredded is conveyed to the sieving unit by a conveyor. The sieve unit can have different designs. Designs are known in which the sieve unit forms a simple conveyor trough which is provided with openings in order to achieve a sieving effect (grate trough). Furthermore, designs are known in the prior art in which a screen deck is used as a circular or elliptical oscillator. One or more additional screens are installed below a conveyor trough. The rock material is fed to a crushing unit via a conveyor. For example, the crushing unit can be a jaw crusher. When transported via the upstream unit (grate gutter or sieve), part of the supplied material is screened out, this screened-out fraction is bypassed in the bypass unit so that it does not burden the crusher. It is now possible to either remove the screened fraction from the crusher discharge belt or to transport it out of the working area of the machine using a separate conveyor. Sidebands are usually used for this. The user now has the option of choosing whether to drive one or the other mode of operation. To do this, he must adjust the adjustable flap of the conveyor to either the bypass position or the conveyor position.

During operation, it often happens that the screened fine fraction settles on the surface of the flap and blocks it increasingly. This then means that the screened material is no longer discharged in the desired manner, but is distributed in an uncontrolled manner in the machine. This problem can be solved, for example, by the flap being fastened to the sieve unit in such a way that it is excited by the vibration exciter together with the sieve unit. Thus, during operation, the flap swings together with the sieve unit, which advantageously prevents the fine sieved material from sticking to the surface of the flap.

On the other hand, the flap must be adjustable, in particular rotatable between the swivel positions (the bypass position and the conveying position), on the conveying unit. For this purpose, bearing receptacles are provided on the conveyor unit in the prior art, in which the bearing sections of the flap are rotatably mounted. The bearing has a play in the range of one or more 1/10 mm. However, due to the vibrations of the flap together with the sieve unit during operation, the bearings can deflect over time. Furthermore, it has proven to be problematic to securely and reliably fix the flap in one of the pivot positions relative to the conveyor unit over a longer period of time. In particular, due to the oscillations and vibrations, screw connections for fixing the flap in one of the swivel positions often become loose.

On the basis of the prior art described, the present invention is therefore based on the object of improving the availability and operational reliability of the processing plant, in particular with regard to the adjustable flap that swings together with the sieve unit.

To solve this problem, starting from the processing plant of the type mentioned at the outset, it is proposed that at least one releasable clamping section is assigned to at least one of the bearing sections, which has a clamping effect on the assigned bearing section and fixes it in a pivoting position of the flap relative to the conveyor unit, so that the Flap is rotatably held in the pivot position relative to the conveyor unit. At least one of the clamping sections assigned to a bearing section is held in a rotationally fixed manner on the conveyor unit, so that the clamping section or sections assigned to a bearing section form a bearing seat for the bearing section. When the clamping sections are released, the at least one bearing section can be rotated therein from one pivot position into the other. When the clamping section acts in a clamping manner on the at least one bearing section, the bearing section is held in a rotationally secured manner by means of frictional engagement, so that the flap is fixed relative to the conveying unit in the current pivot position about the pivot axis. The at least one with the least one clamping section provided bearing then no longer has any bearing play and a knocking out of the bearing during the operational use of the processing plant is reliably and reliably prevented. The clamping of the at least one bearing section by the at least one releasable clamping section preferably acts on the bearing section in the radial direction from the outside. However, it would also be conceivable for the clamping to act on the bearing section in the radial direction from the inside. For this purpose, the bearing section could, for example, have a cylindrical opening inside, in which the at least one clamping section is arranged.

Furthermore, a single clamping section, for example in the form of a clamping ring, can be assigned to a bearing section, the inner circumference of which can be reduced by means of suitable clamping means, for example in the form of at least one screw, in order to generate the clamping action acting on the bearing section, so that the clamping section can also be used its inner circumference clampingly engages around the outer circumference of the bearing section. However, a plurality of clamping sections, preferably two clamping sections, are preferably assigned to a bearing section, each of which, for example, has the shape of a circular arc and together form a clamping ring with an adjustable inner circumference. By means of suitable clamping means, for example in the form of screws, which act between adjacent clamping sections, the inner circumference of the clamping ring can be reduced and the clamping sections can be clamped around the outer circumference of the bearing section.

The clamping forces of the at least one clamping section preferably act on the associated bearing section in a plane that is perpendicular to the pivot axis of the flap. It has been shown that such a clamping securing of the flap relative to the delivery unit is considerably more robust with respect to oscillations and vibrations than the previously used securing devices, for example by means of pure screw connections and positive locking.

According to an advantageous development of the invention, it is proposed that the flap has a profile section, the central axis of which forms the pivot axis of the flap and the bearing sections of the bearing are coupled to the longitudinal ends thereof. The profile section can be broken through by longitudinal struts be passed through, which form a support structure for stabilizing and / or stiffening the flap. The profile section can be fixed to the longitudinal struts, for example welded. The bearing sections are welded to the ends of the profile section or fastened in a rotationally fixed manner in some other way. According to a preferred embodiment of the invention, it can be provided that the adjustable conveyor unit has two mutually spaced fastening sections, between which the flap is pivotally held, the fastening sections being fastened to the sieve unit. It can in particular be provided here that the fastening sections are fastened to opposite side walls of the sieve unit. Bushings for the bearing sections of the flap can be formed in the fastening sections.

The fastening sections of the conveyor unit are preferably attached to opposite side walls of the sieve unit via flange sections which are formed on the one hand on the side walls of the sieve unit and on the other hand on the fastening sections. To fasten the conveyor unit to the sieve unit, the corresponding flange sections are simply brought into contact and fastened to one another using suitable fastening means, for example using screws and nuts. Flanging the fastening sections on the side walls of the sieve unit enables particularly simple assembly and disassembly or particularly simple exchange of the conveyor unit.

According to a further preferred embodiment, it is proposed that the at least one bearing section be assigned two clamping sections, a first clamping section being fastened on the outside to one of the fastening sections and designed to receive the bearing section. The other clamping section is arranged on a side of the bearing section opposite the first clamping section and can be detachably fastened to the first clamping section, so that the bearing section can be fixed in a pivoted position of the flap relative to the conveyor unit and the flap in the pivoted position relative to the conveyor unit is held against rotation. The clamping sections assigned to a bearing section are preferably arranged on the outside of the fastening sections, so that they can be easily reached by a user from the outside in order to be able to quickly and easily generate or release the clamping effect of the clamping sections on the assigned bearing section. The respective clamping sections assigned to one of the bearing sections can be detachably fastened to one another in order to grip around the bearing section arranged therebetween. For example, it would be conceivable to fasten the clamping sections to one another by means of screws, so that the bearing section is clamped between the clamping sections by tightening the screws, so that the flap is held in a rotationally fixed manner in the pivoted position relative to the conveyor unit. Advantageously, the at least one bearing section has a substantially circular outer circumference and the at least one clamping section has a circular arc-shaped inner circumference. The inner circumference of the clamping sections can also comprise a plurality of flat segments which, strung together, form an approximately circular arc-shaped inner circumference. The same applies to the outer circumference of the bearing section. In this way, the clamping section or sections can be clamped over a large area on the respectively associated bearing section.

Of course, it would also be conceivable to fix and secure the flap in a desired pivoting position relative to the delivery unit in addition to the clamping sections in a different manner, for example by means of a positive fit. In this context, it can additionally be provided, in order to hold the flap on the vibrating sieve unit securely in the respective pivoted position, that at least one locking section with at least one locking receptacle is attached to the flap. The at least one locking section is rotatably connected to the flap. The locking section or sections can be fixed in the bypass position and / or the conveying position on fixed fastening elements by means of a positive fit.

A preferred embodiment of the invention is such that the flap has a central region, which is followed by bends on both sides laterally transverse to the conveying direction, and that the sieve unit has a conveying trough which is formed, at least in regions, by a limp component, for example a band made of rubber or plastic to which the flap is placed with its underside in the bypass position. With the limp component, the conveyor trough can be easily shaped into a trough-like shape. The conveyor trough collects the goods to be transported in the middle of the conveyor trough and directs it to the flap. The flap, with its central area and its laterally connected angled sections, approximates the groove-shaped geometry of the limp component and thus ensures that the screened material is clearly derived. The fact that the flap lies against the conveyor trough in the bypass position on the underside results in a descending step in the transition area between the conveyor trough and the flap in the conveying direction, so that there is no resistance to the transport route. This easily prevents the material from becoming stuck and blocked.

If it is provided that the flap is underpinned by means of a support structure which is formed by longitudinal struts and cross struts, the flap is of a particularly light and stable construction.

A particularly preferred embodiment of the invention provides that the adjustable conveying unit has a conveying element in the conveying direction behind the flap, which in the bypass position of the flap connects to the conveying area of the flap. This creates a space-saving design. In the bypass position, a sufficiently large transport distance can be bridged by combining the flap with the conveyor element. The adjustment of the flap from the bypass position to the conveying position requires only a small swivel space. If it is also provided in this construction that the conveying element is fastened to the sieve unit in such a way that it is excited by the vibration exciter together with the sieve unit and the flap, then not only the flap but also the conveying element is protected from blocking with sieved material protected. It can also reduce the amount of parts and assembly work it should be provided that the conveying element is fastened to the two fastening sections of the conveying unit and keeps them spaced apart.

If it is provided that the conveying element is underpinned by means of a supporting structure which is formed by one or more support struts (e.g. longitudinal struts and transverse struts), the conveying element is of a light and stable construction.

It is conceivable that the flap and / or the conveying element have a sheet metal section which is preferably underpinned by the supporting structure on its underside. Alternatively, it would be conceivable for the flap and / or the conveying element to have a material section made of a pliable material, in particular rubber or plastic, which is preferably underpinned by the supporting structure on its underside. The material section made of flexible material has the particular advantage that, due to the oscillations and vibrations of the conveying unit and the flap or conveying element that moves with it, it can be set into particularly strong and abrupt vibrations, which effectively fix the fine screened material on the surface of the flap or the conveying element prevent. The limp material section can rest directly on the supporting structure or on the sheet metal section applied thereon. As an alternative to the support structure or in addition, it is conceivable that at least one stiffening element is present in or on the material section. The flap or the conveying element can be brought into the desired shape and held in this shape by the stiffening element or elements. In particular, the center area and the angled portions adjoining it laterally can be formed by the support structure and / or the stiffening element or elements in the flap or the conveying element, so that they emulate the trough-like geometry of the conveying trough.

A further preferred embodiment of the invention is such that the flap and / or the conveying element has a central region, to which bends are connected on both sides laterally transversely to the conveying direction, the material section consisting of a flexible material of the flap or the conveying element in the manner of a drum covering on the outside of the bends along the Direction of conveyance is clamped. This makes it possible for the central region of the flap or of the conveying element to be set into particularly strong and abrupt vibrations, which effectively prevent the fine screenings from sticking to the surface of the flap or of the conveying element.

Figur 1

in schematischer Prinzipdarstellung eine mobile Brechanlage in Seitenansicht,

Figur 2

eine Siebeinheit einer Brechanlage in Seitenansicht und im Schnitt,

Figur 3

die Darstellung gemäß Figur 2 in einer veränderten Betriebsstellung,

Figur 4

eine verstellbare Fördereinheit in perspektivischer Ansicht von unten,

Figuren 5 und 6

ein Lager der verstellbaren Fördereinheit gemäß Figur 4;

Figur 7

die verstellbare Fördereinheit gemäß Figur 4 in perspektivischer Ansicht von oben,

Figur 8

die verstellbare Fördereinheit aus Figur 7, jedoch in einer veränderten Betriebsstellung

Figur 9

die verstellbare Fördereinheit gemäß der Figuren 4, 7 und 8 in einem Längsschnitt, und

Figur 10

die verstellbare Fördereinheit gemäß der Figuren 4, 7 und 8 in perspektivischer Ansicht von unten.

The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings. Show it:

Figure 1

a schematic principle representation of a mobile crushing plant in side view,

Figure 2

a screen unit of a crushing plant in side view and in section,

Figure 3

the representation according to Figure 2 in a changed operating position,

Figure 4

an adjustable conveyor unit in a perspective view from below,

Figures 5 and 6

a bearing of the adjustable conveyor unit Figure 4 ;

Figure 7

the adjustable conveyor unit according to Figure 4 in a perspective view from above,

Figure 8

the adjustable conveyor unit Figure 7 , but in a different operating position

Figure 9

the adjustable conveyor unit according to the Figures 4 . 7 and 8 in a longitudinal section, and

Figure 10

the adjustable conveyor unit according to the Figures 4 . 7 and 8 in perspective view from below.

Figure 1 shows a mobile crushing plant 10, as is typically used for crushing rock material or other mineral material. This Mobile crushing plant 10 has a machine chassis which is supported by two running gear designed as chain drives.

The crushing plant 10 is equipped with a filling unit 20, which is usually designed as a funnel-shaped feed unit. The crushing plant 10 can be filled with the material to be shredded via this filling unit 20. The filling unit 20 has a conveyor on the bottom, in particular a grate gutter or, as in the present case, a conveyor belt. The material to be comminuted is conveyed to a sieving unit 30 via this conveying device. A vibration exciter 38 is assigned to the sieving unit 30 and can be designed as an eccentric drive. With this vibration exciter 38, the sieving unit 30 can be set in vibration in order to subject the conveyed material to a sieving process. The vibration exciter 38 not only vibrates the sieving unit 30 for sieving purposes, but in connection with the inclined arrangement of the individual sieve decks, a transport effect is also achieved, as in the case of a vibration conveyor.

How Figure 1 reveals, the coarse rock fraction, which is not screened out, is conveyed by the screening unit 30 to a crushing unit 40. In the present case, the crushing unit 40 is designed in the form of a jaw crusher. This crushing unit 40 has two crushing jaws which form a converging gap. The material to be shredded is conveyed into this gap area. The crushing unit 40 has a fixed crushing jaw and a movable crushing jaw. The movable crushing jaw is driven by an eccentric drive 41. How Figure 1 reveals, the coarse rock material is broken in the converging gap. At the bottom, the broken and crushed rock material leaves the crushing unit 40 and falls onto a crusher discharge conveyor 60 due to gravity. In the present case, the crusher discharge conveyor 60 is designed as an endlessly rotating conveyor belt. The crushed rock material is discharged via the crusher discharge conveyor 60 and piled up next to the crushing plant 10.

As can be seen in the drawing, the material coming from the filling unit 20 is passed through a sieve 32 (eg top sieve deck) in the sieving unit 30. Part of the rock material is sifted out. These are rock parts which, because of their size, do not have to be sent through the crushing unit 40, since they already have a size which corresponds approximately to the size of the rock which is broken by the crushing unit 40. As can also be seen in the drawing, a part of this sifted rock fraction is fed directly onto the crusher discharge conveyor 60, namely in the bypass past the crusher unit 40. Below the sieve 32 there is now another sieve deck 34 in the sieving unit 30. This screen deck 34 screens a further, fine fraction from the material that has already been screened. It is now partially desired to separate this particularly fine fraction, for which a discharge belt 50 is used. The fine partial fraction is fed onto this endlessly circulating discharge belt 50, conveyed out of the working area of the crushing plant 10 and accumulated, as is the case Figure 1 reveals. It is now the case that it is not always desirable to discharge the fine fraction. Rather, the machine operator would like to have the choice of separating them or feeding them directly onto the crusher discharge conveyor 60 together with the coarser sieved material. An adjustable conveyor unit 70 is used for this purpose.

The construction, arrangement and mode of operation of the conveyor unit 70 are described in more detail below. How Figure 2 can be seen, the sieve unit 30 has two side walls 31 which are arranged at a distance from one another. The conveying area for the rock material is formed between the two side walls 31. The illustration shows that at least one of the side walls 31 has a receptacle 33 for the vibration exciter 38. The vibration energy of the vibration exciter 38 can thus be introduced into the side wall 31. A different arrangement of the vibration exciter 38 is also conceivable, but it should be provided that the vibration energy from the vibration exciter 38 is introduced into the sieving unit 30 so that the sieving unit 30 vibrates with the frequency and amplitude of the vibration exciter 38.

The sieve 32 is held between the two side walls 31 in the upper region of the sieve unit 30. The sieve deck 34 is arranged below the sieve 32. A conveying area results between the screen 32 and the screen deck 34. A conveying area is delimited above the sieve 32 by means of the two side walls 31 and the sieve 32. A further conveying area results below the screen deck 34. This conveyor area is delimited on the bottom side by a conveyor trough 36. The conveyor trough 36 can be designed as a limp component, for example made of rubber or plastic, the longitudinal extent of the conveyor trough 36 extending from the left side of the sieving unit 30 to the adjustable conveyor unit 70. As per the illustration Figure 2 can be seen further, the screen deck 34 can be extended by means of a discharge surface 35. The discharge surface 35 adjoins the screen deck 34 in the conveying direction in the form of a descending step, so that no barrier arises in the conveying direction.

The adjustable conveyor unit 70 has a flap 72 and a conveyor element 76. The flap 72 can be pivoted about a pivot axis 74.1. In Figure 2 an operating position is shown in which the flap 72 is in a pivoted conveying position. The fine fraction fraction screened out from the screen deck 34 is fed onto the discharge belt 50 by means of the flap 72. Figure 3 shows a further operating position of the flap 72, which represents the bypass position. In this pivoted position, the screened fine rock material coming from the conveyor trough 36 is guided onto the conveyor element 76 via the flap 72. The fine rock material then falls from the conveying element 76 onto the crusher discharge conveyor 60.

As the Figures 2 and 3 As can be seen further, the side walls 31 have screw receptacles 37 in the region of the adjustable conveyor unit 70. These are used for fastening the adjustable conveyor unit 70 to the side walls 31 by means of fastening screws 71.6. The adjustable conveyor unit 70 can thus be attached to the sieve unit 30. The conveyor unit 70 is preferably flanged to the sieve unit 30 by means of flange sections, as will be explained in more detail below.

From the representations according to the Figures 4 to 10 the structure of the adjustable conveyor unit 70 can be seen more clearly. As these drawings show, the adjustable conveyor unit 70 has two lateral fastening sections 71, which can be designed as sheet metal sections. Both the flap 72 and the conveying element 76 are arranged between the two fastening sections 71. In the example shown, the conveyor unit 70 is flanged to the sieve unit 30. For this purpose, flange sections 71.7, 71.8 are formed on the opposite side walls 31 of the sieve unit 30 and on the fastening sections 71 of the conveyor unit 70. The flange sections 71.7, 71.8 are in detail in the Figures 5 and 6 shown. The fastening sections 71 are each formed in two parts, a first part of a fastening section 71, on which a first flange section 71.7 is formed, being fastened to one of the side walls 31 by means of the fastening screws 71.6, and a second part of the fastening section 71, to which a second Flange section 71.8 is formed, has a bushing 71.2 for a bearing section 75.1 of the flap 72, as will be explained in more detail below. To attach the adjustable conveyor unit 70, it is simply held with its flange sections 71.8 from below to the flange sections 71.7, which are assigned to the opposite side walls 31, and the flange sections 71.7, 71.8 are fastened to one another by means of fastening screws 71.9 and corresponding nuts 71.10. Flanging the conveyor unit 70 onto the sieve unit 30 enables particularly simple assembly and disassembly or a particularly simple exchange of the conveyor unit 70.

The flap 72 can be formed by a sheet metal section 72.4 as a stamped and bent part. It has a central region 72.1, to which bends 72.2 are connected on both sides. Facing the center area 72.1, the bends 72.2 have bends 72.3. A trough-shaped geometry of the conveying trough 36 is simulated via the laterally set bends 72.2 and the central region 72.1. A support structure 73 is arranged below the flap 72. This support structure 73 has interconnected longitudinal struts 73.1 and cross struts 73.2, 73.3. The flap 72 is underpinned with the support structure 73, so that a stable, lightweight construction is realized. On the sheet metal section 72.4 of the The central region 72.1 and the bends 72.2 on both sides can rest, at least in regions, on a material section 72.5 made of a pliable material, for example in the form of a material web made of rubber or plastic. This embodiment is, for example, in the Figures 5 and 7 to 10 shown. The material section 72.5 can be clamped in the manner of a drum covering on the outer sides of the folds 72.3, so that the material section 72.5, especially in the middle area 72.1 and in the area of the bends 72.2, can be set into particularly strong vibrations when the conveyor unit 70 is together with the sieve unit 30 swings in order to prevent clumping and jamming of the conveyed material arranged thereon. In an alternative embodiment, however, it is also conceivable that the material section 72.5 made of the pliable material is provided instead of the sheet metal section 72.4 and rests directly on the support structure 73 of the flap 72. In this case too, the material section 72.5 is clamped and held on the outside at the bevels 72.3 and rests only on the support structure 73 in the central area 72.1 and in the area of the bends 72.2.

As an alternative to or in addition to the support structure 73, it is also conceivable that at least one stiffening element (not shown) is present in or on the material section 72.5. The stiffening element or elements can be made of plastic or metal, for example. The flap 72 can be brought into the desired shape and held in this shape by the stiffening element or elements. In particular, the central region 72.1 and the bends 72.2 which adjoin it laterally can be formed by the support structure 73 and / or the stiffening element or elements in the flap 72, so that they emulate the trough-like geometry of the conveyor trough 36.

The longitudinal struts 73.1 can have openings through which a profile section 74 is passed. The profile section 74 can be fixed to the longitudinal struts 73.1, for example welded. The profile section 74 forms with its central longitudinal axis the pivot axis 74.1 of the flap 72. At its longitudinal ends 74 bearing sections 75.1 of a bearing 75 are attached to the profile section 74, as is the case here Figure 5 reveals. The bearing sections 75.1 can, like shown to be formed by circular disks. The bearing sections 75.1 are welded to the ends of the profile section 74 or fastened in a rotationally fixed manner in some other way. Locking sections 77.1, 77.2 with locking receptacle 77.3 can be attached either to the bearing sections 75.1 or the support structure 73 or the flap 72. The locking sections 77.1, 77.2 are rotatably connected to the flap 72. The bearing sections 75.1 are passed through the fastening sections 71 via bushings 72.1, so that they are arranged on the outer sides of the fastening sections 71. The feedthroughs 72.1 are designed, for example, as in the present case in the form of circular cutouts from the fastening sections 71 (cf. Figure 6 ). The bearing sections 75.1 are assigned to the fastening sections 71 via clamping sections 80.1, 80.2. The bearing sections 75.1 can form a rotary bearing in these clamping sections 80.1, 80.2. be used.

In the examples shown, each of the bearing sections 75.1 is assigned two clamping sections 80.1, 80.2. However, it would also be conceivable that only one of the bearing sections 75.1 is assigned clamping sections, or that only one clamping section is assigned to each bearing section 75.1, which then encompasses a larger circumference of the bearing sections 75.1 than in FIG Figure 6 shown. The clamping sections 80.1, 80.2 are held together by means of screws 80.3 and nuts 80.4. If the screws 80.3 or nuts 80.4 are loosened to such an extent that the clamping sections 80.1, 80.2 are held together, but their inner circumference does not abut the outer circumference of the bearing sections 75.1, the clamping sections 80.1, 80.2 are located in a so-called. Bearing position and form inventory for the warehouse sections 75.1. In the storage position of the clamping sections 80.1, 80.2, the flap 72 can be rotated about the pivot axis 74.1 into one of the pivot positions. By tightening the screws 80.3 or the nuts 80.4, the clamping sections 80.1, 80.2 reach a securing position in which an inner circumference formed by the clamping sections 80.1, 80.2 is reduced, so that the clamping sections 80.1, 80.2 have a clamping effect on the bearing sections 75.1 and the flap 72 in the swivel position relative to the conveyor unit 70. The clamping sections 80.1, 80.2 thus form bearing mounts with adjustable bearing play. In particular The bearing play can be reduced to a minimum in the securing position, so that knocking out of the bearings 75 during the operational use of the crushing plant 10 is practically impossible.

In order to prevent an undesired adjustment of the flap 72 in the respective pivot position, an additional securing of the flap 72 can be provided. The additional securing takes place, for example, by using positioning elements 71.5 which are brought into engagement with the locking receptacles 77.3 in the respective pivoted position. It can particularly preferably be provided that the positioning elements 71.5 are designed as fastening screws which are inserted through screw receptacles 71.3, 71.4 of the fastening sections 71 and are screwed into the locking receptacles 77.3 designed as threaded receptacles. In particular, it can be provided that one or more, preferably two, positioning elements 71.5 secure the assignment of the flap 72 to the fastening sections 71 for each swivel position.

In one embodiment of the invention, which in the Figures 5 and 6 is shown, the bearing sections 75.1 can be fixed by means of the releasable clamping sections 80.1, 80.2 in a pivoted position of the flap 72 relative to the conveyor unit 70 or the fastening sections 71, so that the flap 72 is held in a rotationally fixed manner relative to the conveyor unit 70. In this case, additional securing of the bearing sections 75.1 by means of the locking sections 77.1, 77.2 with the locking receptacles 77.3 and the positioning elements 71.5 can be dispensed with. In particular, it is proposed that each of the bearing sections 75.1 is assigned two clamping sections 80.1, 80.2, a first clamping section 80.1 of a bearing 75 being fastened to one of the fastening sections 71 and designed to receive the bearing section 75.1, and the other clamping section 80.2 on one of the First clamping section 80.1 opposite side of the bearing section 75.1 is arranged and releasably attachable to the first clamping section 75.1, so that the bearing section 75.1 can be clamped between the two clamping sections 80.1, 80.2 in their securing position. In this way, the bearing section 75.1 is in a pivoted position of the flap 72 relative to the Conveyor unit 70 can be fixed and the flap 72 is rotatably held in the pivoting position relative to the conveyor unit 70. This clamping securing of the flap 72 relative to the fastening sections 71 has proven to be particularly suitable for the large vibrations occurring during the operation of the crushing plant 10.

The first clamping section 80.1 is fastened to the fastening section 71, for example by means of welding. The second clamping section 80.2 can, for example, be detachably fastened to the first clamping section 80.1 by means of the screws 80.3. The screws 80.3 can be passed through corresponding openings in the clamping sections 80.1, 80.2 and secured with the nuts 80.4. By tightening the screws 80.3 or the nuts 80.4, a distance between the clamping sections 80.1, 80.2 can be reduced in the manner of brackets or clamps. In this way, the bearing sections 75.1 can be clamped between the clamping sections 80.1, 80.2. It is particularly preferred if the bearing sections 75.1 have a substantially circular outer circumference and the clamping sections 80.1, 80.2 each have a circular arc-shaped inner circumference. The inner circumference of the clamping sections 80.1, 80.2 can also comprise a plurality of flat segments which, strung together, form an approximately circular arc-shaped inner circumference. In this way, the clamping sections 80.1, 80.2 can rest on the bearing sections 75.1 over a large area.

As the Figures 4 . 5 and 7 to 10 can be seen, at least one of the bearing sections 75.1 has an actuating element 75.2, which is non-rotatably connected to the bearing section 75.1 and thus to the flap 72. The actuating element 75.2 can be formed, for example, by a hexagon. The actuating element 75.2 can be accessed with a tool. The actuating element 75.2 can be adjusted with the tool and with it the flap 72 in order to pivot it between the bypass position and the conveying position.

The conveying element 76 is also fastened to the two fastening sections 71. The conveying element 76 can consist of a sheet metal section 78.8 as a stamped and bent part be made. It has a central region 76.1, to which bends 76.2 are connected laterally. Facing the central area 76.1, bends 76.3 are bent away from the bends 76.2. The bevels 76.3 have fastening receptacles 76.6, such as Figure 4 reveals. The conveying element 76 can then be connected to the fastening sections 71 by means of suitable fastening elements, for example screws 76.7. The conveyor element 76 therefore fixes the two fastening sections 71 at the desired distance from one another. With the central region 76.1 and the two bends 76.2, the conveying element 76 simulates the trough-shaped geometry of the flap 72 or the conveying trough 36.

In the Figures 4 . 9 and 10 the structure of the conveying element 76 is further illustrated. As this illustration shows, at least one support strut 76.4 and longitudinal struts 76.5 are attached to the underside of the conveying element 76. These struts 76.4, 76.5 form a support structure for the conveying element 76, which enables a stable, lightweight construction. The support strut 76.4 has angled fastening sections 76.6 at its longitudinal ends as fastening receptacles. The screws 76.7 can be inserted through these fastening sections 76.6 in order to connect the support strut 76.4 to the fastening sections 71. Accordingly, the support strut 76.4 then serves on the one hand for the stable undertaking of the conveying element 76 and on the other hand also for keeping the fastening sections 71 at a defined distance from one another.

On the sheet metal section 76.8 of the central area 76.1 and the bends 76.2 on both sides, a material section 76.9 made of a pliable material, for example a material web made of rubber or plastic, can rest at least in some areas. This embodiment is, for example, in the Figures 9 and 10 shown. The material section 76.9 can be clamped in the manner of a drum covering on the outer sides of the folds 76.3, so that the material section 76.9, especially in the central area 76.1 and in the area of the bends 76.2, can be set into particularly strong vibrations when the conveyor unit 70 is together with the sieve unit 30 swings in order to prevent clumping and jamming of the conveyed material arranged thereon. In an alternative Embodiment, it is also conceivable that the material section 76.9 is provided from the limp material instead of the sheet metal section 76.8 and rests directly on the support structure 76.4, 76.5 of the conveying element 76. In this case too, the material web 76.9 is clamped and held on the outside at the folds 76.3 and lies only in the middle area 76.1 and in the area of the bends 76.2 on the support structure 76.4, 76.5.

As an alternative to the support structure 76.4, 76.5 or additionally, it is also conceivable that at least one stiffening element (not shown) is present in or on the material section 76.9. The stiffening element or elements can be made of plastic or metal, for example. By means of the stiffening element or elements, the conveying element 76 can be brought into the desired shape and held in this shape. In particular, the central region 76.1 and the bends 76.2 which adjoin it laterally can be formed by the support structure 76.4, 76.5 and / or the stiffening element or elements in the conveying element 76, so that they emulate the trough-like geometry of the flap 72 or the conveying trough 36.

The in the Figures 4 to 10 shown adjustable conveyor unit 70 with its flap 72 and the conveyor element 76 can be manufactured as a pre-assembled unit. It can then be easily mounted on the sieve unit 30. The assembly is particularly easy if it is provided that the two fastening sections 71 - as described above - are connected to the side walls 31 of the sieve unit 30 by means of the flange sections 71.7, 71.8. For this purpose it can be provided that the first parts of the fastening sections 71 have screw receptacles. These can be aligned with the screw receptacles 37 of the side walls 31. By means of the fastening screws 71.6, which are then passed through the screw receptacles 37, a secure and stable fastening of the first parts of the fastening sections 71 of the adjustable conveyor unit 70 to the side walls 31 of the sieve unit 30 can be achieved. Alternatively, it would also be conceivable for the flange sections 71.7 to be welded to the side walls 31 on the outside or to be fastened in some other way.

The mode of operation of the adjustable conveyor unit 70 will now be explained in more detail below. The Figures 3 . 4 . 7 . 9 and 10 show the bypass position, as was explained in more detail above. The flap 72 rests with its top against the bottom of the conveyor trough 36. Due to the angled geometry of the flap 72, the flap 72 simulates the curved shape of the conveyor trough 36. This enables trouble-free material transport. This is also supported in that the flap 72 bears against the underside of the conveyor trough 36. In this way, a descending step is formed in the conveying direction.

In the bypass position, the end of the flap 72 facing away from the conveying trough 36 is placed over the conveying element 76, as shown in FIG Figures 3 . 7 and 9 reveal. This also creates a descending step in the conveying direction so that no blockages can occur. If the flap 72 of the in Figure 3 shown bypass position in the conveying position (cf. Figures 2 and 8th ) is to be rotated, the rotation lock of the flap 72 must be released. For this purpose, the positioning elements 71.5 designed as fastening screws are unscrewed from the locking receptacles 77.3 designed as threaded receptacles and removed from the screw receptacles 71.3, 71.4 of the fastening sections 71. In addition, the connection between the clamping sections 80.1, 80.2 is released in order to release the clamping holder of the bearing sections 75.1. A suitable tool is then brought into engagement with the actuating element 75.2. The flap 72 can then be rotated until it is in the Figures 2 and 8th shown pivot position reached. The released clamping sections 80.1, 80.2 serve as bearing mounts. Then the conveying path between the conveying trough 36 and the conveying element 76 is interrupted. The material stream coming from the conveyor trough 36 is now passed directly onto the discharge belt 50. The flap 72 blocks the path between the conveying trough 36 and the conveying element 76 and, for this purpose, also protrudes a little above these components. In this way, it is reliably prevented that material can get into the area of the crusher discharge conveyor 60. In this new swivel position, the flap 72 can in turn be secured against unintentional swiveling by means of the clamping sections 80.1, 80.2 or additional safeguards, for example in the form of the positioning elements 71.5.

Claims (15)

1. Processing system, in particular a crushing system (10), in particular a rock crusher, comprising a filling unit (20) which can be filled with a material to be crushed,
   wherein a sieve unit (30) is arranged downstream of the filling unit (20) in the conveying direction or in the filling unit (20),
   wherein the sieve unit (30) can be set into vibratory motion by means of a vibration exciter (38),
   wherein via the sieve unit (30) a first part of the supplied material is fed to a processing unit, in particular a crushing unit (40), and another part of the supplied material is separated out in the sieve unit (30),
   wherein, by means of a flap (72) of a conveyor unit (70), which flap is adjustable about a pivot axis (74.1), the separated part of the material is fed past the processing unit, in particular past the crushing unit (40), to a conveyor device, in particular a crusher discharge conveyor (60), in a bypass position, or is alternatively discharged by means of a conveyor device (50) from a working region of the processing system in a conveying position, wherein bearing portions (75.1) of a bearing (75) are coupled to opposite sides of the flap (72) and are rotationally mounted on the conveyor unit (70),
   characterised in that
   at least one detachable clamping portion (80.1, 80.2) is associated with at least one of the bearing portions (75.1), which clamping portion acts in a clamping manner on the associated bearing portion (75.1) and fixes it relative to the conveyor unit (70) in a pivoting position of the flap (72) such that the flap (72) is held in a rotationally fixed manner relative to the conveyor unit (70) in the pivoting position.
2. Processing system according to claim 1,
   characterised in that
   the flap (72) has a profiled portion (74) whose central axis forms the pivot axis (74.1) and to the longitudinal ends of which the bearing portions (75.1) of the bearing (75) are coupled.
3. Processing system according to claim 1 or 2,
   characterised in that
   the adjustable conveyor unit (70) has two mutually spaced fastening portions (71), in each of which a passage (71.2) is formed for one of the bearing portions (75.1), such that the flap (72) is mounted between the fastening portions (71) such that it can pivot about the pivot axis (74.1), wherein the fastening portions (71) are fastened to the sieve unit (30).
4. Processing system according to claim 3,
   characterised in that
   the fastening portions (71) are flanged on opposite side walls (31) of the sieve unit (30) by means of flange portions (71.7, 71.8) formed on the side walls (31) and on the fastening portions (71).
5. Processing system according to claim 3 or 4,
   characterised in that
   two clamping portions (80.1, 80.2) are associated with the at least one bearing portion (75.1), wherein a first clamping portion (80.1) is fastened to one of the fastening portions (71) and designed to receive the bearing portion (75.1), and the other clamping portion (80.2) is arranged on a side of the bearing portion (75.1) opposite the first clamping portion (80.1) and is releasably fastenable to the first clamping portion (80.1) so that the bearing portion (75.1) can be fixed relative to the conveyor unit (70) in a pivoting position of the flap (72) and the flap (72) is mounted in a rotationally fixed manner relative to the conveyor unit (70) in the pivoting position.
6. Processing system according to claim 5,
   characterised in that
   the clamping portions (80.1, 80.2) associated with one of the bearing portions (75.1) in each case are fastened to one another by means of screws (80.3) and the bearing portion (75.1) is clamped between the clamping portions (80.1, 80.2) by tightening the screws (80.3) so that the flap (72) is mounted in a rotationally fixed manner relative to the conveyor unit (70) in the pivoting position.
7. Processing system according to one of claims 1 to 6,
   characterised in that
   the at least one bearing portion (75.1) has a substantially circular outer circumference and the at least one clamping portion (80.1, 80.2) has an arcuate inner circumference.
8. Processing system according to one of claims 1 to 7,
   characterised in that
   the flap (72) has a central region (72.1) which is adjoined by bent portions (72.2) on both sides transversely to the conveying direction, and in that the sieve unit (30) has a conveying channel (36) which is formed, at least in some regions, by a pliable component, for example a rubber band, on which the underside of the flap (72) is positioned in the bypass position.
9. Processing system according to one of claims 1 to 8,
   characterised in that
   the flap (72) is underpinned by means of a support structure (73) which is formed by longitudinal struts (73.1) and transverse struts (73.2, 73.3).
10. Processing system according to one of claims 1 to 9,
    characterised in that
    downstream of the flap (72) in the conveying direction, the adjustable conveyor unit (70) has a conveying element (76), which in the bypass position of the flap (72) adjoins a conveying region of the flap (72).
11. Processing system according to claim 10,
    characterised in that
    the conveying element (76) is underpinned by means of a support structure which is formed by one or more supporting struts, in particular transverse struts (76.4) and/or longitudinal struts (76.5).
12. Processing system according to claim 9 or 11,
    characterised in that
    the flap (72) and/or the conveying element (76) have a sheet-metal portion (72.4; 76.8), which is preferably underpinned on its underside by the support structure (73; 73.1, 73.2, 73.3; 76.4, 76.5).
13. Processing systems according to claim 9 or 11,
    characterised in that
    the flap (72) and/or the conveying element (76) have a material portion (72.5; 76.9) made of a pliable material, in particular rubber or plastic, which is preferably underpinned on its underside by the support structure (73; 73.1, 73.2, 73.3; 76.4, 76.5), and/or in that at least one stiffening element is present in or on the material portion (72.5; 76.9).
14. Processing systems according to claim 12,
    characterised in that
    the flap (72) and/or the conveying element (76) have a material portion (72.5; 76.9) made of a pliable material, in particular rubber or plastic, which is underpinned on its underside by the sheet-metal portion (72.4; 76.8).
15. Processing system according to one of claims 1 to 14,
    characterised in that
    one or more locking portions (77.1, 77.2) are coupled to the flap (72) using at least one locking receptacle (77.3) and can be fixed to stationary fastening elements (71.3) in the bypass position and/or the conveying position.

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