Crushing device for crushing mineral material

Abstract

The invention relates to a crushing device for crushing mineral material or the like, comprising a crushing unit (10) having a crushing chamber (30), wherein a crushing device (11), in particular movable, preferably rotatable or pivotable, is accommodated in the crushing chamber (30), wherein the crushing device (11) carries at least one crushing tool (11.2), in particular a crushing tool, wherein the crushing chamber (30) is limited by means of at least one crushing chamber boundary (31), wherein the crushing chamber boundary (31) has an inner side (31.2) facing the crushing chamber (30) and an outer side (31.1) facing away from the crushing chamber (30), and wherein the crushing chamber boundary (31) has an inspection opening (32).To ensure reliable monitoring of the wear condition of the crushing device, a monitoring device (50) held by a carrier (40) is provided for determining the wear condition of at least one wear part arranged in the crushing chamber (30), in particular a crushing or crushing tool (11.2), the monitoring device (50) being adjustable through the inspection opening (32) by means of an actuator (63) between a park position and a monitoring position, wherein the monitoring device (50) is arranged at least partially in the crushing chamber (30) in the monitoring position and is arranged outside the crushing chamber (30) in the park position.

Description

[0001] The invention relates to a crushing device for crushing mineral material or the like, with a crushing unit having a crushing chamber, wherein a crushing device, in particular movable, preferably rotatable or pivotable, is received in the crushing chamber, wherein the crushing device carries or has at least one crushing tool, in particular a crushing tool, wherein the crushing chamber is limited by means of at least one crushing chamber boundary, wherein the crushing chamber boundary has an inner side facing the crushing chamber and an outer side facing away from the crushing chamber, and wherein the crushing chamber boundary has an inspection opening.

[0002] Crushing devices according to the invention can, for example, be designed such that they have a rotor as the crushing unit, which is rotatably mounted in the crushing chamber. Such a crushing device can therefore be, in particular, an impact crusher, a cone crusher, or a roller crusher. Alternatively, it can also be a crushing device in which the crushing unit has a crushing element pivotably arranged in the crushing chamber. Such crushing devices can, for example, be jaw crushers.

[0003] The crushing tool can be an interchangeable tool, for example, one that is connected to the shredding tool in an interchangeable manner. In particular, the crushing tool can be a striking bar, an impact arm, a crushing cone, a crushing roller, or a crushing jaw.

[0004] Within the scope of the invention, the crushing tool need not necessarily be part of the movable part (for example, the rotor or the pivoting crushing body) of the crushing tool. Rather, within the scope of the invention, the crushing tool can be a part that is arranged at least partially within the crushing chamber, for example, an impact arm or a crushing chamber lining, and in particular also a part of the crushing chamber boundary.

[0005] The crushing chamber of crushing equipment of this type, especially rock crushers, is inherently very difficult to access. The necessary safety measures for any intervention in the crushing chamber further complicate accessibility. The regularly required inspection of wear parts in the crushing chamber is therefore very time-consuming. Sensor-based wear measurements offer a significant advantage here, both in terms of operator safety and machine downtime. In addition to simply measuring wear, which allows the operator to plan the adjustment of the crushing gap as wear progresses and to manage the inventory and installation of wear parts, such a system can detect damage early and prevent major machine failures.Furthermore, sensor-based wear measurement offers significant advantages in terms of measurement accuracy compared to the visual assessment by the machine operator that is common today.

[0006] Solutions are known in the prior art where wear parts of a comminution tool are made of a cast material. The measuring system of the detection device is integrated directly into the casting. This is only feasible with considerable effort when working with cast parts. Replacing the wear part also necessitates replacing the detection device, resulting in a high number of parts.

[0007] Methods that determine the layer thickness of wear parts using ultrasound are also known (see DE 2357432 B2). Ultrasonic sensors used for layer thickness determination typically employ a sensor head that is attached directly to the wear part. Otherwise, the sound waves would be reflected or refracted when the medium changes (e.g., from air to steel). Such a sensor arrangement is also impractical.

[0008] The object of the invention is to provide a breaking device of the type mentioned above, which enables reliable and safe wear detection.

[0009] This problem is solved by providing a detection device held by a carrier for determining the wear state of at least one wear part, in particular the crushing tool, and by making the detection device adjustable through the inspection opening by means of an actuator between a park position and a detection position, wherein the detection device is arranged at least partially in the crushing chamber in the detection position and is arranged outside the crushing chamber in the park position.

[0010] The detection device is therefore no longer physically attached to the wear part, but can be used separately. In its operating position, the detection device is available in the crushing chamber and can detect the condition of the wear part. Once the detection of the wear part's condition is complete, the actuator moves the detection device through the inspection opening into the protected area behind the outer edge of the crushing chamber. Preferably, to determine the wear of the wear part, the crushing unit can be briefly stopped and then the detection device retracted into the crushing chamber. This enables effective and safe detection of the wear part's condition. The risk of damage to the detection device from the crushed material and / or dust is virtually eliminated.

[0011] The detection device can be, in particular, an optical measuring device, for example, a measuring device comprising a laser scanner or a camera, preferably a stereo camera (especially a 3D camera) or a 2D camera. It is also conceivable that the detection device comprises one or more laser distance sensors or time-of-flight (ToF) cameras. Electromagnetic distance measurement methods, such as radar or eddy current sensors, or capacitive measurement methods are also conceivable.

[0012] According to the invention, the wear part can be, in particular, the comminution device or a part thereof. It is conceivable that, according to the invention, the wear part is a comminution tool or a part thereof, for example, the crushing tool. It is also conceivable that, according to the invention, the wear part is the crushing chamber lining or a part thereof. Within the scope of the invention, a wear part can also be any other component that comes into contact with the material to be comminuted or the comminutioned material in the crushing chamber.

[0013] According to a preferred embodiment of the invention, the actuator may be held, at least in the parked position, on the outside of the crushing chamber. Thus, the actuator is also protected during crushing operations, positioned on the outside of the crushing chamber boundary.

[0014] One conceivable embodiment of the invention is such that the carrier can be adjusted between the park and the detection positions by means of an actuating device comprising the actuator, and that the detection device is moved translationally, at least in certain areas, or adjusted along an arc, particularly a circular path, by means of the actuating device. Depending on the geometric conditions, the appropriate movement variant can thus be used. This allows for a space-saving design, and the detection device can be positioned precisely in the crushing chamber in the detection position.

[0015] According to one possible embodiment of the invention, the positioning device may include a gearbox driven by the actuator. This allows for a transmission of motion, enabling, for example, a sufficiently large adjustment range of the detection device to be achieved with a relatively small actuator travel. This, in turn, allows for a compact, space-saving design.

[0016] If the detection device is adjusted on a curved track using the positioning device, it is advantageously provided that the carrier is pivoted by more than 60° between the parked position and the detection position. This ensures that a sufficiently large detection area is available for the detection device in the detection position.

[0017] If the carrier is designed to form a housing in which the detection device is received, and if the housing has a light transmission area, in particular an opening, which, in the detection position, creates a direct line of sight between the detection device and the at least one wear part, in particular the crushing tool, then the detection device is protected from mechanical damage within the housing. The opening of the housing ensures that the wear condition can be reliably detected in the detection position. Preferably, in the detection position, the opening of the housing is directed downwards in the direction of gravity. This at least reduces the risk of rock particles falling from the crushing chamber onto the detection devices.It may additionally or alternatively be provided that the opening is at least partially covered with a cover that is permeable to the measurement signal.

[0018] A particularly preferred embodiment of the invention is such that a sealing arrangement is provided which, in the parked position and / or in the detection position, at least partially seals the inspection opening dust-tight. Thus, the risk of dust from the crushing chamber entering the area of ​​the outer surface of the crushing chamber boundary in the respective position is prevented or at least significantly reduced.

[0019] A particularly effective sealing effect can be achieved if the carrier has sealing sections as part of the sealing arrangement that, in the parked position, seal against the edge sections of the inspection opening and / or if the carrier has a limiting element that, in the detection position, seals against the edge sections of the inspection opening.

[0020] A particularly simple design results when a sealing section is provided on the carrier, which seals against the edge sections of the inspection opening both in the park position and in the detection position.

[0021] It is further preferably possible that the sealing section of the carrier is guided past the edge section of the inspection opening in a sealing manner during the adjustment between the detection position and the parking position, so that a dust-tight seal is ensured at least in sections even during the adjustment movement.

[0022] One embodiment of the invention is such that sealing sections of the support are arranged on opposite sides of the support and extend in the direction of the pivot axis about which the support is pivotably mounted, that the sealing sections preferably have an outer contour that each follows the shape of a partial cylinder, the cylinder axis of which runs parallel to the axis of rotation of the support, and / or that the edge sections of the inspection opening preferably have an outer contour that each follows the shape of a partial cylinder, the cylinder axis of which runs parallel to the axis of rotation of the support. This results in a sealing closure on the opposite sides of the support that is of simple construction.If the cylinder axis(s) and the pivot axis of the support are aligned, the support can be adjusted on a circular path, with a sealing closure being ensured on the opposite sides of the support during this adjustment movement.

[0023] A crushing device according to the invention can be configured such that the actuator comprises a linear damper with a cylinder and a piston guided therein, the piston being coupled to a piston rod, and that the actuator is pivotably coupled directly or indirectly to the detection device via an actuating element. This results in a simple design. The linear damper can preferably be designed as a hydraulic cylinder connected to the hydraulic system of the crushing device. Preferably, the cylinder or the piston rod is directly coupled to the support via the actuating element.

[0024] However, it is also conceivable that a deflection mechanism, for example a deflection lever or a deflection gear, is provided, which is arranged in the area between the actuator and the carrier to ensure suitable movement of the carrier.

[0025] For a space-saving design, it may be provided that a holding device is arranged in the area of ​​the outside of the crushing chamber boundary, in particular that it is attached to the crushing chamber boundary, that the holding device has a spacer that keeps a bearing attachment of the actuator spaced apart from the outside, and that the actuator is pivotably coupled to the holding device by means of the bearing attachment.

[0026] If it is provided that the carrier is covered in the parked position by means of a deck section of a cover, whereby the deck section is kept at a distance from the outside of the crushing chamber boundary, then the detection device is also protected in the parked position from external influences, in particular mechanical influences or from dust exposure.

[0027] For maintenance purposes, the cover may be opened to access the detection unit. Preferably, with the cover open, the fasteners holding the detection unit to the support can be released, allowing for easy removal of the unit during maintenance. This allows the detection unit to be removed without disassembling the support. Furthermore, with the cover open, the detection unit can be easily cleaned if necessary.

[0028] One embodiment of the invention provides that the detection device, in its parked position, is received in a receiving space, preferably in a receiving space of the carrier, which is accessible in the parked position through an opening, and that a seal, preferably at least partially, is arranged around the opening between the cover and the receiving space to seal the receiving space, at least partially. This reduces or eliminates the risk of the detection device becoming contaminated in the parked position. The opening may preferably be the same opening through which the detection device, in its detection position, also detects the wear condition of the wear part, in particular the breaking tool.

[0029] A particularly preferred embodiment of the invention is such that the inspection opening of the crushing chamber boundary is closed in the parked position by means of a locking mechanism, wherein the locking mechanism, in its closed position, is arranged between the crushing chamber and the detection device. The locking mechanism prevents crushed material fragments from entering the area of ​​the outside of the crushing chamber boundary during crushing operation. Thus, the crushing chamber boundary protects the detection device and seals it off from the crushing chamber.

[0030] Advantageously, to protect the detection device, it is also provided that the surface of the closing arrangement facing the crushing chamber has the same or a higher wear resistance than the crushing chamber boundary.

[0031] Advantageously, it can also be provided that, in the detection position, a return spring with a preload force acting in the direction of the parking position acts directly or indirectly on the detection device to generate or assist an adjustment movement of the detection device towards the parking position. This holds the detection device, in particular the carrier, in the parking position or brings it into the parking position when the actuator is disengaged. This increases operational reliability.

[0032] According to one embodiment of the invention, it is also conceivable that the carrier has a contoured area which, when moved between the detection and parking positions, passes by a wiper. This cleans off any contaminants that may be adhering to the carrier during its adjustment.

[0033] The invention will be explained in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show: Figure 1 shows a schematic representation and a side view of a material processing plant with a crushing unit; Figure 2 shows a schematic representation of a part of the crushing unit of the material processing plant according to Figure 1 in perspective view from the left, Figure 3 the construction unit according to Figure 2 In perspective view from the right, Figure 4 shows a detection device of the mineral processing plant according to the Figures 1-3 , Figures 5 and 6 the detection device according to Figure 4 in two different operating views and in side view, Figure 7 in side view a modified variant of the detection device according to the Figures 4-6 and in a parking position Figure 8 the detection device according to Figure 7in a capture position, Figure 9; an alternative design variant of a capture device in perspective view, Figure 10; the capture device according to Figure 9 in side view and in section and Figure 11 the detection device according to Figure 10 in a changed operating position, namely in a parking position.

[0034] Figure 1 Figure 1 shows a material processing plant 1 in the form of a crushing plant with a material processing unit in the form of a crushing unit 10. The material processing plant 1 is designed as a mobile material processing plant 1 and therefore has chassis 1.5. However, it is also conceivable that the material processing plant 1 is a stationary material processing plant 1.

[0035] The material processing system 1 has a chassis 1.1 which supports the machine components or at least some of the machine components. At its rear end, the chassis 1.1 preferably has a boom 1.2. A material feed area is formed in the region of the boom 1.2.

[0036] The material feed area can include a feed hopper 2 and a material feed device 9.

[0037] The feed hopper 2 can be formed, at least partially, by hopper walls 2.1 extending in the direction of the longitudinal extent of the material processing plant 1 and a rear wall 2.2 extending transversely to the longitudinal extent. The feed hopper 2 leads to the material feeding device 9.

[0038] The material feeding device 9 can, as shown in the present embodiment, have a conveying trough that can be driven by a vibratory drive. Material to be crushed can be fed into the material processing plant 1 via the feed hopper 2, for example by means of a wheel loader, and fed onto the conveying trough.

[0039] As the drawing shows, the material to be shredded preferably enters the area of ​​a screening unit 3 from the conveying trough. This screening unit 3 can also be referred to as a pre-screening arrangement. At least one screen deck 3.1, 3.2 is arranged in the area of ​​the screening unit 3. In the present embodiment, two screen decks 3.1, 3.2 are used. A system configuration without a pre-screening arrangement is also conceivable.

[0040] At the upper screen deck 3.1, a sub-fraction is screened out of the material to be crushed. This sub-fraction already has a sufficient particle size that no longer needs to be crushed in the material processing plant 1. Therefore, this screened sub-fraction can be routed past the crushing unit 10 in a bypass channel 3.5.

[0041] If a second screen deck 3.2 is used in the screening unit 3, a further fine particle fraction can be screened from the sub-fraction that accumulates below screen deck 3.1. This fine particle fraction can be conveyed below screen deck 3.2 to a side discharge conveyor 3.4. From the side discharge conveyor 3.4, the fine particle fraction is discharged and conveyed to a stockpile 7.2 located to the side of the machine.

[0042] How Figure 1As illustrated, the screening unit 3 can be a vibrating screen with a screen drive 3.3. The screen drive 3.3 sets the screen deck 3.1 and / or the screen deck 3.2 into vibratory motion. Due to the inclined arrangement of the screen decks 3.1, 3.2, and in conjunction with the vibratory motion, material is transported on the screen decks 3.1, 3.2 towards the crushing unit 10 or the bypass channel 3.5.

[0043] The material to be crushed, coming from screen deck 3.1, is fed to the crushing unit 10, as shown here. Figure 1 This can be seen.

[0044] The crushing unit 10 can be designed, for example, as an impact crusher, in particular as a rotary impact crusher, a jaw crusher, a cone crusher, or a roller crusher. The crushing unit 10 includes a comminution device 11.

[0045] It's like in Figure 1If a rotary impact crushing unit is used, it has, for example, a crushing device 11 that includes an impact rotor driven by an internal combustion engine 12. Figure 1 The rotation axis 17 of the impact rotor runs horizontally in the direction of the image depth. The impact rotor is housed in a crushing chamber 16.1.

[0046] If a jaw crusher is used, the crushing device 11 has two opposing crushing jaws that enclose a converging crushing chute between them, leading to a crushing gap. At least one of the crushing jaws can be driven, for example by the combustion engine 12, to crush the material being crushed in the converging crushing gap.

[0047] The impact rotor can, for example, be equipped on its outer circumference with crushing tools 11.2, which in this case are designed as impact bars. Opposite the impact rotor, wall elements, preferably in the form of impact wings 20, can be arranged. When the impact rotor rotates, the material to be crushed is thrown outwards by the impact bars. This material then strikes the impact wings 20 and is crushed due to the high kinetic energy. If the material to be crushed has a sufficient particle size to allow the material particles to pass through a crushing gap 15 between the impact wings 20 and the radially outer ends of the impact bars, the crushed material leaves the crushing unit 10 via the crusher outlet 16.

[0048] It is conceivable that in the area of ​​the crusher outlet 16, the crushed material coming from the crushing unit 10 is combined with the material coming from the bypass channel 3.5 and conveyed onto a belt conveyor 1.3. The belt conveyor 1.3 can then be used to remove the material from the working area of ​​the crushing unit 10.

[0049] As the drawings show, the belt conveyor 1.3 can have an endlessly circulating conveyor belt with a loaded side 1.6 and an unloaded side 1.7. The loaded side 1.6 serves to collect and transport the crushed material that falls from the crusher outlet 16 of the crushing unit 10. At the belt ends, the conveyor belt can be deflected between the loaded side 1.6 and the unloaded side 1.7 by means of deflection rollers 1.4. In the area between the deflection rollers 1.4, guides, in particular support rollers, can be provided to change the conveying direction of the conveyor belt, to give the conveyor belt a specific shape, and / or to support the conveyor belt.

[0050] The belt conveyor 1.3 has a belt drive by means of which the belt conveyor 1.3 can be driven. The belt drive can preferably be arranged at the discharge end 1.9 or in the area of ​​the discharge end 1.9 of the belt conveyor 1.3.

[0051] The belt conveyor 1.3 can be connected to a control unit via a control line, for example by means of the belt drive.

[0052] One or more additional belt conveyors 6 and / or a return conveyor 8 may be used, which in principle have the same design as the belt conveyor 1.3. In this respect, reference can be made to the above explanations.

[0053] In the area between the feed end and the discharge end 1.9, a magnet 1.8, in particular an electromagnet, can be arranged above the load section 1.6. The magnet 1.8 can be used to lift iron parts from the broken material and move them out of the conveying area of ​​the belt conveyor 1.3.

[0054] In the transport direction after the belt conveyor 1.3, a secondary screening device 5 can be arranged. The secondary screening device 5 has a screen housing 5.1 in which at least one screen deck 5.2 is housed. Below the screen deck 5.2, a lower housing part 5.3 is formed, which serves as a collection chamber for the material screened out at the screen deck 5.2.

[0055] The lower housing section 5.3 creates a spatial connection to another belt conveyor 6 via an opening. Here, the second belt conveyor 6 forms its feed section 6.1, whereby the screened material in feed section 6.1 is directed onto the load side of the second belt conveyor 6. The second belt conveyor 6 conveys the screened material to its discharge end 6.2. From there, the screened material reaches a stockpile 7.1.

[0056] The material not screened at the screen deck 5.2 of the secondary screen 5 is conveyed from the screen deck 5.2 onto a conveyor belt 5.4. The conveyor belt 5.4 can also be designed as a belt conveyor, so reference can be made to the explanations given above regarding the belt conveyor 1.3. The conveyance direction of the conveyor belt 5.4 is in Figure 1 in the direction of the image depth.

[0057] At its discharge end, the conveyor belt 5.4 transfers the unscreened material, also known as oversize, to a feed area 8.1 of the return conveyor 8. The return conveyor 8, which can be designed as a belt conveyor, conveys the oversize towards the feed hopper 2. At its discharge end 8.2, the return conveyor 8 transfers the oversize back into the material flow, specifically into the material feed area. The oversize can then be fed back to the crushing unit 10 and crushed there to the desired particle size.

[0058] The Figures 2 and 3 The figures show the comminution devices 11 with their comminution tools 11.2. These are interchangeably mounted on the rotor of the comminution device 11. As the figures show, the comminution device 11 is arranged in the crushing chamber 30. The crushing chamber 30 is at least partially closed off from the surroundings by means of a crushing chamber boundary 31.

[0059] In the Figures 2 and 3 Only an exemplary part of a crushing chamber boundary 31 is shown. As these illustrations demonstrate, the crushing chamber boundary 31 can be part of a wall that has an inner side 31.2 facing the crushing chamber 30 and an outer side 31.1 facing away from the crushing chamber 30. The crushing chamber boundary 31 has an inspection opening 32. The inspection opening 32 can be formed by a cutout or recess in the crushing chamber boundary 31.

[0060] In the present embodiment, the inspection opening 32 is designed in the form of a rectangular opening, which is bounded by opposing horizontal and opposing vertical edge sections.

[0061] As the illustrations show, a detection device 50 is arranged in the area of ​​the crushing chamber boundary 31. Figure 2 The detection device 50 is shown in a detection position. In this detection position, the detection device 50 is at least partially located in the crushing chamber 30. The detection device 50 can then detect the wear condition of at least one of the crushing tools 11.2 or of any other wear part in the crushing chamber 30.

[0062] In Figure 3The detection device 50 is shown in a parked position. In this parked position, the detection device 50 is moved out of the crushing chamber 30 and held in the area behind the outer surface 31 of the crushing chamber boundary 31.

[0063] Figure 4 Figure 50 shows the detection device 50 in an enlarged detail view and in its parked position. As the illustration shows, the detection device 50 is held on a support 40.

[0064] The carrier 40 can preferably have a housing 41 that forms a receptacle 47. The detection device 50 is housed in the receptacle 47 and is at least partially protected.

[0065] The housing 41 may have side walls 45 that define the receptacle 47. The receptacle 47 has an opening 48, which is preferably designed as a through-hole. The opening 48 may be covered with a cover permeable to the measurement signal of the detection device 50, for example, a transparent cover. Preferably, however, the opening 48 is designed as a through-hole that is not covered.

[0066] Through the opening 48, a user can access the detection device 50, preferably in the parked position, for maintenance purposes.

[0067] The support 40 has bearing projections 42 on opposite sides, preferably in the area of ​​the walls 45. The two bearing projections 42 form a common pivot axis. The bearing projections 42 are each pivotally mounted in bearing receptacles 43 of a holder 44. Thus, the support 40 can be pivoted between a Figure 4 and 5shown parking position and the one in Figure 6 The shown capture position can be swivelled.

[0068] An actuator 63 is used to adjust the carrier 40. The actuator 63 is preferably designed as a drive, in particular as a linear drive, and most preferably as a piston-cylinder unit. The actuator 63 has a cylinder 65 in which a piston is adjustably arranged. The piston is connected to a piston rod 66, which extends from the cylinder 65. The piston rod 66 has an adjusting element 67. By means of this adjusting element 67, the piston rod 66 is pivotably coupled to the housing 41.

[0069] The cylinder 65 has a bearing boss 64. This bearing boss 64 is pivotably mounted on a holding device 60. As illustrated in drawings 4 to 6, the holding device 60 preferably has two spacers 61 spaced apart from each other. Preferably, the two spacers 61 are attached to the outer side 31.1 of the crushing chamber boundary 31. Facing away from the inner side 31.1, the spacers 61 have support elements 62. The bearing boss 64 of the cylinder 65 is attached to the support elements 62. Preferably, the bearing boss 64 is pivotably mounted in the area between the two spacers 61. The bearing boss, with its pivot bearing, is spaced apart from the outer side 31.1 of the crushing chamber boundary 31.

[0070] Preferably, the carrier 40 has a coupling element 46 to which the actuating piece 67 of the actuator 63 is pivotably attached. The coupling element 46 can have a coupling element receptacle 46.1. For a space-saving design, the coupling element receptacle 46.1 is arranged and designed such that in the detection position (see Figure 6 ) the piston rod 66 finds at least partial space in the coupling receptacle 46.1. For this purpose, it is preferably the case that the coupling element receptacle 46.1 is formed by a groove that is machined into the support 40 (see Figure 4 ).

[0071] The Figures 5 and 6Figure 41 also illustrates that the housing 41 has a limiting element 41.3 on its side opposite the bearing projections 42. This limiting element 41.3 forms a contour area 49.2 in the region of the opening 48, which preferably follows the shape of a circular arc, at least partially, in cross-section through the pivot axis formed by the bearing projections 42.

[0072] Additionally or alternatively, the housing 41 may also form a contour area 49.1 opposite the opening 48, which preferably follows the shape of a circular arc at least partially in section through the pivot axis formed by the bearing projections 42.

[0073] The contour area 49.1 is opposite a horizontal edge section of the inspection opening 32, as Figure 6Illustrated. Preferably, this horizontal edge section of the inspection opening 32 has a contour that follows the arc-shaped contour of the contour section 49.1. Preferably, the edge section and the contour area 49.1 have a circular-arc shape, as shown. Figures 5 and 6 To illustrate. A narrow gap is formed between the contour area 49.1 and the edge section to create a dust seal at the upper horizontal edge of the support 40.

[0074] The contour section 49.2 is opposite a horizontal edge section of the inspection opening 32 in the area of ​​the opening 48 of the housing 41. Preferably, this horizontal edge section of the inspection opening 32 has a contour that follows the arc-shaped contour of the contour section 49.2. Preferably, this horizontal edge section and the contour section 49.2 have a circular-arc shape, as illustrated in the figures. A narrow gap is formed between the contour section 49.2 and the horizontal edge section to form a seal at the lower horizontal edge of the support 40.

[0075] For a simple design, it is preferably provided that the contour areas 49.1, 49.2 each form partial cylindrical surfaces. These two partial cylindrical surfaces each have a cylindrical axis that is aligned with the pivot axis of the bearing bosses 42. Thus, the two contour areas 49.1, 49.2 are guided precisely past the associated edge sections of the inspection opening 32, while maintaining a tight seal.

[0076] Secure contour area 49.1 and / or contour area 49.2 in the capture position ( Figure 6 ) and / or in the parked position ( Figure 5) the sealing closure between the inner side 31.2 and the outer side 31.1 of the crushing chamber boundary 31 through the inspection opening 32. Preferably, when the carrier 40 is moved from the detection position to the park position, the contour areas 49.1 and / or 49.2 are guided past the associated edge section of the inspection opening in such a way that the sealing closure between the inner side 31.2 and the outer side 31.2 is maintained at least in a partial area of ​​the positioning movement.

[0077] The Figures 5 and 6 They also illustrate that the carrier 40 has a recess 41.2 in the area of ​​the pivot axis, which is groove-shaped. Figure 6 This illustrates that in the detection position, the upper horizontal edge section of the inspection opening 32 engages at least partially in this recess 41.2 in order to easily achieve an increased swivel angle range of the carrier 40.

[0078] Figure 5 Figure 40 shows that the carrier 40 can have a locking arrangement 41.1. This locking arrangement 41.1 is preferably part of the carrier 40. However, it is also conceivable that the locking arrangement 41.1 is designed as a separate component that is connected to the carrier 40. It is also conceivable that the locking arrangement 41.1 forms a separate component that is not connected to the carrier 40.

[0079] The closing arrangement 41.1 is arranged and designed to close the inspection opening 31 at least partially in the parking position of the detection device 50.

[0080] As the representation according Figure 5 As illustrated, it is preferably the case that the locking arrangement 41.1 is flush with the inside 31.2 in the park position.

[0081] Figure 5This also illustrates that it is preferably the case that the locking arrangement 41.1 is part of the housing 41 which limits the receptacle 47.

[0082] During normal crushing operations of material processing plant 1, the detection device 50 is located in the Figures 3-5 shown parking position. InIn this parked position, the locking mechanism 41.1 closes the inspection opening 32. If an inspection of at least one shredding tool 11.2 is to be carried out, the actuator 63 is actuated. This causes the piston rod 66 to move relative to the cylinder 65, extending it. As a result of this movement, the carrier 40 pivots about the pivot axis formed by the bearing supports 42. Preferably, the contour areas 49.1 and / or 49.2 slide past the associated horizontal edge sections of the inspection opening 32. Once the carrier 40 has been moved into the detection position, the detection device 50 can detect the condition of the shredding tool 11.2. Preferably, the detection device 50 is designed as an optical detection device. InAt the detection position, a line of sight, preferably a straight line, is formed between the shredding tool 11.2 and the detection device 50.

[0083] Figure 6 This illustrates that, preferably, in the detection position, the opening 48 of the housing 41 is directed downwards. This prevents objects falling into the crushing chamber from striking and damaging the detection device 50.

[0084] Preferably, the detection device 50 is covered from above by a cover, positioned against the direction of gravity. This cover can preferably be formed by the closing arrangement 41.1.

[0085] Once the detection of the wear condition of the cutting tool 11.2 is complete, the carrier 40 can be moved back to the park position by means of the actuator 63 in accordance with Figure 5 be spent.

[0086] Figure 5This illustrates that preferably, in the parked position, the opening 48 is accessible from the outside 31.1. Preferably, in the parked position, the opening 48 is directed downwards in the direction of gravity so that no contaminants can fall through the opening 48 into the receptacle 47.

[0087] Figure 4 This illustrates that the walls 45 of the support 40, with their outer surfaces, are guided past the vertical edge sections of the inspection opening 32 during the adjustment of the support 40 between the detection and parking positions. Preferably, a narrow gap is formed between the outer surfaces of the walls 45 and the vertical edge sections of the inspection opening 32, which is sufficiently small to prevent dust from passing from the inner surface 31.2 to the area behind the outer surface 31.1 during crushing operations. This ensures a dust-tight seal.

[0088] It is also conceivable that the inspection opening 32 is sealed at least partially around its perimeter by means of sealing elements in order to prevent dust from passing through.

[0089] In the Figures 7 and 8 is a further education course offered by those in the Figures 2-6 The monitoring device shown is illustrated. Identical components are marked with the same reference numbers, therefore, to avoid repetition, reference can be made to the preceding explanations.

[0090] In addition to the aforementioned design, the monitoring device, according to the Figures 7 and 8 a cover 70. The cover 70 serves to at least partially cover the detection device 50, the holding device 60 and / or the carrier 40 in the area of ​​the outside 31.1 when the detection device 50 is in the parked position.

[0091] As the illustrations show, the cover 70 has a circumferential wall 71, which is attached to the outer surface 31.1 by means of a fastening section 72. The cover 70 has a deck section 73, which is held at a distance from the outer surface 31.1 by means of the wall 71. Thus, the detection device 50 can be positioned in the parked position between the deck section 73 and the outer surface 31.1. This shows Figure 7 .

[0092] Preferably, the cover 70 has an opening (not shown) through which the opening 48, and thus the detection device 50, is accessible for maintenance purposes. Preferably, this opening in the cover 70 can be closed by means of a closure.

[0093] In Figure 9A further embodiment of the invention is shown. Identical components are provided with the same reference numerals, therefore reference can be made to the preceding explanations to avoid repetition.

[0094] As this illustration shows, the actuator 63 of the holding device 60 is coupled to the support 40 by means of a gearbox, which in this case is designed as a simple pivot lever gearbox. The gearbox thus has a lever 68 that can be driven by the actuator 63. The lever 68 is directly or indirectly connected to a bearing extension 42 of the support 40 in a rotationally fixed manner. Therefore, the support 40 can be pivoted about a pivot axis when the lever 68 is pivoted.

[0095] Figure 9This illustrates that the carrier 40 again has a housing 41 with an opening 48. Thus, the carrier 40 again has essentially the same construction as the carrier 40 according to the preceding embodiments according to the Figures 2-8 Reference is made to the above statements.

[0096] The support 40 is arranged between two holders 40 and is pivotably coupled to the holders 44 via the bearing attachments 42.

[0097] Figure 10 illustrates the detection position of the detection device 50 and Figure 11 the parking position. Evidence Figure 10 The carrier 40 again has contour areas 49.1, 49.2 on opposite sides. The contour areas 49.1, 49.2 can transition seamlessly into one another, as shown. Figure 10 shows. In particular, it may be the case that the contour areas 49.1, 49.2 form a common circular arc segment, at least in some areas ( Figure 10 ).

[0098] The Figures 10 and 11also show that the closing arrangement 41.1 can be formed by a separate component which is mounted on the carrier 40 and which closes the inspection opening 32 in the park position.

[0099] Evidentiously Figure 11 It is possible that a sealing arrangement with a sealing element 49.3 is effective between the support 40 and the cover 70. The sealing element 49.3 is arranged in the area of ​​the opening 48 of the housing 41. The sealing element 49.3 is arranged and designed to seal the opening, at least partially, in the parked position in conjunction with the cover section 73 of the cover 70. This prevents contaminants from entering the area of ​​the receptacle 47.

[0100] Evidentiously Figure 11It is also possible that a wiper 49.4 acts on at least one of the contour areas 49.1, 49.2, or on any other area of ​​the housing 41, during the adjustment of the housing 41 between the parking and detection positions. The wiper 49.4 serves to clean off contaminants adhering to the outside of the housing 41 during this adjustment movement.

[0101] Figure 11 This illustrates, for example, that a scraper 49.4 may be held in the area of ​​the cover 70. The cleaned-off contaminants can preferably then be collected in the area of ​​the cover 70 and discharged in an orderly manner through openings 74 in the housing.

[0102] InThe preceding explanations have described the functioning of the invention with reference to the detection of the wear condition of the crushing tool 11.2. However, the invention is not limited to this; rather, it is possible that the detection device 50 can additionally or alternatively detect the wear condition of another wear part in the crushing chamber.

Claims

1. Crushing device for crushing mineral material or the like, comprising a crushing unit (10) having a crushing chamber (30), wherein a crushing device (11), in particular movable, preferably rotatable or pivotable, is accommodated in the crushing chamber (30), wherein the crushing device (11) carries at least one crushing tool (11.2), in particular a crushing tool, wherein the crushing chamber (30) is bounded by means of at least one crushing chamber boundary (31), wherein the crushing chamber boundary (31) has an inner side (31.2) facing the crushing chamber (30) and an outer side (31.1) facing away from the crushing chamber (30), and wherein the crushing chamber boundary (31) has an inspection opening (32). characterized by thatA detection device (50) held by a carrier (40) for determining the wear condition of at least one wear part arranged in the crushing chamber (30), in particular a crushing or crushing tool (11.2), is provided, wherein the detection device (50) is adjustable through the inspection opening (32) by means of an actuator (63) between a park position and a detection position, wherein the detection device (50) is arranged at least partially in the crushing chamber (30) in the detection position and is arranged outside the crushing chamber (30) in the park position.

2. Crushing device according to claim 1, characterized by the fact that the actuator (63) is held at least in the park position in the area of ​​the outside (31.1) outside the crushing chamber (30).

3. Crushing device according to claim 1 or 2, characterized by the fact thatthe carrier (40) is adjustable between the parking and detection positions by means of an actuating device comprising the actuator (63), and that the detection device (50) is moved translationally at least in certain areas by means of the actuating device or is adjusted at least in certain areas on an arc path, in particular a circular path.

4. Crushing device Claim 3, characterized by the fact that the carrier (40) is pivoted by more than 60° between the parking position and the detection position.

5. Crushing device according to one of claims 1 to 4, characterized by the fact that the carrier (40) forms a housing (41) in which the detection device (50) is received, and that the housing (41) has a light transmission area, in particular an opening (48) which in the detection position creates a straight line of sight between the detection device (50) and the at least one shredding tool.

6. Crushing device according to one of claims 1 to 5, characterized by the fact that a sealing arrangement is provided which, in the parking position and / or in the detection position, seals the inspection opening (32) at least partially in a dust-tight manner.

7. Crushing device according to claim 6, characterized by the fact that the carrier (40) has sealing sections as part of the sealing arrangement which, in the park position, are sealingly opposite edge sections of the inspection opening (32) and / or that the carrier (40) has a limiting element (41.3) which, in the detection position, is sealingly opposite edge sections of the inspection opening (32).

8. Crushing device according to claim 7, characterized by the fact thatthe sealing sections of the support (40) are arranged on opposite sides of the support (40) and extend in the direction of the pivot axis about which the support (40) is pivotably mounted, that the sealing sections preferably have an outer contour that follows the shape of a partial cylinder, and whose cylinder axis runs parallel to the axis of rotation of the support (40) and / or that the edge sections of the inspection opening (32) preferably have an outer contour that follows the shape of a partial cylinder, whose cylinder axis runs parallel to the axis of rotation of the support (40), and that the cylinder axis(s) and the pivot axis of the support (40) are particularly preferably aligned with each other.

9. Crushing device according to one of claims 1 to 8, characterized by the fact thatthe actuator (63) has a linear damper with a cylinder (65) and a piston guided therein, wherein the piston is coupled to a piston rod (66), and that the actuator (63) is pivotably coupled directly or indirectly to the detection device (50) by means of an adjusting piece (67).

10. Crushing device according to any one of claims 1 to 9, characterized by the fact that a holding device (60) is arranged in the area of ​​the outside (31.1) of the crushing chamber boundary (30), in particular is attached to the crushing chamber boundary (31), that the holding device (60) has a spacer (62) which holds a bearing extension (64) of the actuator (63) at a distance from the outside (31.1), and that the actuator (63) is pivotably coupled to the holding device (60) by means of the bearing extension (64).

11. Crushing device according to any one of claims 1 to 10, characterized by the fact thatthe carrier (40) in the park position is covered by a deck section (73) of a cover (70), wherein the deck section (73) is held at a distance from the outside of the crushing chamber boundary (31).

12. Crushing device according to claim 11, characterized by the fact that the detection device (50) is received in the park position in a receiving space (47), preferably in a receiving space (47) of the carrier (40), which is accessible via an opening (48), and that a seal (49.3) is arranged between the cover (70) and the receiving space (47) to seal the receiving space (47) at least partially.

13. Crushing device according to one of claims 1 to 12, characterized by the fact that the detection device (50) is accessible in the park position via a maintenance opening, preferably the cover (70) having a maintenance closure by means of which the maintenance opening of the cover can be opened or closed.

14. Crushing device according to one of claims 1 to 13, characterized by the fact that the inspection opening in the park position is closed by means of a closing arrangement (41.1), wherein the closing arrangement (41.1) is arranged in its closed position between the crushing chamber (30) and the detection device (50), and wherein it is preferably provided that the surface of the closing arrangement (41.1) facing the crushing chamber (30) has the same or a higher wear resistance than the crushing chamber boundary (31).

15. Crushing device according to one of claims 1 to 14, characterized by the fact that In the detection position, a return spring with a preload force acting in the direction of the park position acts indirectly or directly on the detection device to generate or assist an adjustment movement in the direction of the park position.

16. Crushing device according to one of claims 1 to 15, characterized by the fact thatthe carrier has a contour area (49.1, 49.2) which is guided past a wiper (49.4) when it is moved between the detection and parking positions.

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