AU2009321716A1

AU2009321716A1 - Mobile crusher

Info

Publication number: AU2009321716A1
Application number: AU2009321716A
Authority: AU
Inventors: Horst Kolleth; Frank Seehofer
Original assignee: ThyssenKrupp Foerdertechnik GmbH
Current assignee: ThyssenKrupp Industrial Solutions AG
Priority date: 2008-12-05
Filing date: 2009-12-03
Publication date: 2011-06-30
Also published as: WO2010063464A1; BRPI0916483A2; DE102008060459A1; CN102239007A

Abstract

The invention relates to a mobile crusher for milling material, particularly dug mineral material. The mobile crusher comprises two crawler tracks (2), a support frame (4) connected to the crawler tracks, a material receiving arm (6) that is supported by the support frame (4) and has a receiving hopper (6b) and a conveyor belt (6a), a milling device (8) for milling the dug material and a material transfer arm (10) for transporting the milled material to another device (12) separate from the crusher. According to the invention, a deflection shield (14) for clearing dug material off the subgrade is provided in front of each of the crawler tracks (2) in the forward travel direction (V).

Description

WO 2010/063464 PCT/EP2009/008608 Mobile crusher Description: 5 The invention relates to a mobile crusher according to the preamble of claim 1. A mobile crusher of this kind is already known from DE 103 14 958 Al. Said document already describes a 10 comminution apparatus which is used as a mobile or semimobile unit in particular in open-cast mining and the recycling industry. Mobile crushers of this kind are preferably used in open-cast mining. They then operate directly behind an extraction device such as a 15 bucket excavator. The bucket of the latter loads the material extracted during excavation into a charging hopper of the mobile crusher. The comminution device of the mobile crusher comminutes the extracted excavated material down to a range of particle sizes that is 20 favorable to transport. Subsequently, the comminuted excavated material is supplied via a transfer belt to a stationary discharging belt or some other device different than the mobile crusher. During the loading process of the mobile crusher by an excavator 25 positioned in front, the excavator carries out at least one horizontal pivoting movement between the actual excavating process and the subsequent transfer of the extracted excavated material to the charging or receiving hopper. During this pivoting movement, 30 smaller and larger parts of the excavated material regularly fall out of the bucket onto the subgrade between the excavator and the mobile crusher. Further, large pieces can also break away from the excavation front during the excavation process, said large pieces 35 then rolling onto the subgrade. In order that the mobile crusher can follow the location of the excavator as extraction proceeds, this road must always be free of corresponding large pieces of the excavated material. These larger pieces of the excavated WO 2010/063464 - 2 - PCT/EP2009/008608 material, which have previously fallen onto the path, could otherwise get under the tracks of the tracked vehicle of the mobile crusher and cause damage to the crawler unit. For this purpose, the mobile crusher has 5 hitherto had to be reversed at regular intervals counter to its direction of working and forward travel, in order that the path in the direction of forward travel can be cleared by smaller graders. Expensive downtimes are caused both by the interruptions for 10 clearing and also by any repair work brought about by damaged crawler units. The object of the present invention is to provide a mobile crusher by way of which the expensive downtimes 15 can be avoided as far as possible. According to the invention, this object is achieved by a mobile crusher having the features of the independent claim. Advantageous developments can be found in the 20 dependent claims. According to the invention, it is provided for a deflection plate to be arranged in front of each of the crawler units. Advantageously, these deflection plates are arranged such that, as seen in the longitudinal extent of the crusher, the plates are 25 arranged between the receiving hopper arranged at the front and the respectively associated crawler unit. As a result, the objects or chunks of excavated material lying on the road are automatically cleared out of the way while the mobile crusher moves and so are kept away 30 from the tracks and the drive units of the crawler units. Each of the deflection plates is dimensioned and held such that its active width or the distance, measured transversely to the direction of travel, between its lateral plate edges is greater than the 35 width of the crawler unit to be protected or of the crawler track to be protected. Advantageously, the deflection plates are configured or arranged such their height and/or angle can be adjusted. Further, the WO 2010/063464 - 3 - PCT/EP2009/008608 deflection plates of two crawler units that are arranged parallel to one another and in a mirror symmetrical manner with regard to the longitudinal axis of the vehicle can have different orientations or (even 5 fixed) arrangements. In a first embodiment of the invention, the deflection plates are tilted, starting from a position in which they are arranged perpendicularly or transversely to 10 the longitudinal axis of the vehicle, in the direction away from the midpoint of the vehicle, such that an arrow shape (having an (open) arrowhead pointing in the direction of forward travel) is formed as seen in the direction of forward travel. 15 In another embodiment of the invention, the deflection plates are arranged in the opposite direction compared with the first embodiment and are tilted towards the midpoint of the vehicle such that a funnel shape 20 (having an (open) arrowhead pointing counter to the direction of forward travel) is formed as seen in the direction of forward travel. Finally, the deflection plates can also be oriented in 25 the same direction, so that, as seen in the direction of forward travel, the material to be cleared is guided by one deflection plate towards the inside between the two crawler units and by the other deflection plate towards the outside laterally next to the associated 30 crawler unit. In another development of the invention, the mobile crusher has a third crawler unit, which, as seen in the direction of forward travel, is arranged substantially 35 centrally in front of the two crawler units that are arranged parallel to one another and in a mirror symmetrical manner with regard to the longitudinal axis of the vehicle, wherein a deflection plate is likewise WO 2010/063464 - 4 - PCT/EP2009/008608 associated with the third crawler unit. The deflection plate of the third crawler unit advantageously has an arrow shape pointing in the direction of forward travel. 5 In another development of the invention, which is not illustrated, one or each deflection plate can have a kind of plate roof (that is be formed so as to be closed at least in some regions at the top), so that 10 chunks of excavated material that drop from above (for example from the conveyor belt) cannot fall between the deflection plate and the crawler unit. Further advantages, particular features and expedient 15 developments of the invention can be gathered from the dependent claims the following description of the figures, in which: figure 1 shows a side view of a first embodiment of 20 the mobile crusher according to the invention, figure 2 shows a plan view of the mobile crusher according to figure 1, figure 3 shows a plan view of a second embodiment of 25 the mobile crusher according to the invention, figure 4 shows a side view of a third embodiment of the mobile crusher according to the invention, and 30 figure 5 shows a plan view of the mobile crusher according to figure 4. Figures 1-5 show a schematic illustration of various exemplary embodiments of a mobile crusher according to 35 the invention. Figure 1 illustrates a first possible embodiment of the mobile crusher according to the invention. The mobile WO 2010/063464 - 5 - PCT/EP2009/008608 crusher comprises substantially two crawler units 2 and also a support frame 4 which is connected thereto and on which further superstructures are arranged or are supported. These further superstructures include 5 substantially a material receiving arm 6 which is supported on the support frame 4, a comminution device 8 which is supported on the support frame 4, and a material transfer arm 10 which is supported on the support frame 4. In this case, the material receiving 10 arm 6 is formed substantially by a transporting belt 6a and a receiving hopper 6b. The comminution device 8, too, corresponds substantially to conventional crusher devices for in particular excavated mineral material. The material transfer arm 10 comprises substantially 15 merely a further transporting belt 10a, via which the comminuted material can be discharged and transferred to a further device 12, for example a stationary transporting belt. According to the invention, the mobile crusher comprises a separate deflection plate 14 20 in front of each crawler unit 2 on the side remote from the material transfer arm 10. According to the exemplary embodiment illustrated, this deflection plate 14 is arranged on the support frame 4 of the mobile crusher by way of securing means 14a. In this case, the 25 securing means 14a can be configured for example as hydraulically or pneumatically actuable telescopic arms. By way of these telescopic arms, each deflection plate 14 can on the one hand be adjusted both in the horizontal direction and in the vertical direction. On 30 the other hand, it is possible, by way of the securing means 14a, for the oblique or transverse position (with regard to the direction of forward travel V) of each deflection plate 14 to be changed. Alternatively, or in addition, one or each securing plate 14 can also be 35 secured to a crawler unit 2 or to the material receiving arm 6.

WO 2010/063464 - 6 - PCT/EP2009/008608 The bucket S of an excavator performs at least one horizontal pivoting movement between the actual excavation process and the subsequent transfer of the extracted excavated material to the receiving hopper 6b 5 of the mobile crusher. During this pivoting movement, smaller and larger parts of the excavated material regularly fall out of the bucket S onto the subgrade P between the excavator and the crusher. As extraction proceeds, the mobile crusher follows the current 10 location of the excavator. The larger parts of the excavated material that have previously fallen onto the path are cleared out of the way by the deflection plates 14 according to the invention, and so they can no longer get under the tracks of the crawler unit 2 of 15 the mobile crusher and cause unnecessary damage there. As a result, unnecessary downtimes of the entire extraction device and the following conveying installations for maintenance or repairs are avoided. 20 Figure 2 illustrates a plan view of the mobile crusher illustrated in figure 1. According to this embodiment, the deflection plates 14 are arranged such that they form an arrow shape (which has an open arrowhead) pointing in the direction of forward travel V. 25 In the embodiment according to figure 3, the deflection plates 14 are arranged such that, as seen in the direction of forward travel V, a funnel shape (or an arrow shape having an open arrowhead and pointing in 30 the opposite direction to the direction of forward travel V) is formed, such that the excavated material to be cleared is guided into the free space between the two crawler units 2 of the mobile crusher. 35 Figures 4 and 5 illustrate a mobile crusher having a total of three crawler units 2. In this case, the third crawler unit, as seen in the direction of forward travel, is arranged substantially centrally in front of WO 2010/063464 - 7 - PCT/EP2009/008608 the two crawler units that are arranged parallel to one another and in a mirror-symmetrical manner with regard to the longitudinal axis X of the vehicle, wherein a deflection plate 14 is also associated with the third 5 crawler unit 2. In this case, the deflection plate 14 of the third crawler unit 2 has an arrow shape (having a substantially closed arrowhead) pointing in the direction of forward travel V. 10 A common feature of all deflection plates 14 is that they can consist of a single deflection plate part or of a plurality of deflection plate parts. Another common feature of all embodiments of the deflection plates 14 is that they have between their outer and 15 lateral edges an active width W extending transversely to the direction of travel and acting in the direction of travel, said active width W being larger than the width B of the crawler unit B to be protected or of the crawler track to be protected and the drive units A 20 thereof.

Claims

1. A mobile crusher for comminuting material in the form in particular of excavated mineral material, 5 comprising: - at least two crawler units (2), - a support frame (4) connected to the crawler units (2), - a material receiving arm (6) which is supported 10 on the support frame (4) and has, arranged at its free end remote from the support frame (4), a receiving hopper (6b) for receiving the supplied material, and which also has a first transporting belt (6a) for the further 15 transport of the received material, wherein the material receiving arm (6), starting from the supporting frame (4), extends substantially in the direction of forward travel (V) of the crusher, 20 - a comminution device (8), which is supported on the support frame (4), for comminuting the material, and - a material transfer arm (10) which is supported on the support frame (4) and has a second 25 transporting belt (10a) for the transport of the comminuted material to a further device (12), which is different from the crusher, wherein the material transfer arm (10) extends towards the rear substantially counter to the 30 direction of forward travel (V) of the crusher, characterized in that - a deflection plate (14) is arranged in front of each crawler unit (2) on the side remote from the material transfer arm (10). 35

2. The crusher as claimed in claim 1, characterized in that at least one of the deflection plates (14) is secured or held such that the inclination angle WO 2010/063464 - 9 - PCT/EP2009/008608 a of its deflection plate surface can be changed with respect to the crawler transverse axis (R) of the crawler unit (2) associated with said deflection plate. 5

3. The crusher as claimed in either of the preceding claims, characterized in that the deflection plates (14) of two crawler units (2) that are arranged parallel to one another and in a mirror 10 symmetrical manner with regard to the longitudinal axis (X) of the vehicle are tilted, starting from a position in which they are arranged perpendicularly to the longitudinal axis (X) of the vehicle, in the direction away from the 15 midpoint (M) of the vehicle, such that an arrow shape is formed as seen in the direction of forward travel (V).

4. The crusher as claimed in either of the preceding 20 claims 1 and 2, characterized in that the deflection plates (14) of two crawler units (2) that are arranged parallel to one another and in a mirror-symmetrical manner with regard to the longitudinal axis (X) of the vehicle are tilted, 25 starting from a position in which they are arranged perpendicularly to the longitudinal axis (X) of the vehicle, in the direction towards the midpoint (M) of the vehicle, such that a funnel shape is formed as seen in the direction of 30 forward travel (V).

5. The crusher as claimed in one of the preceding claims, characterized in that the deflection plates (14) of two crawler units (2) that are 35 arranged parallel to one another and in a mirror symmetrical manner with regard to the longitudinal axis (X) of the vehicle, are secured or held in a WO 2010/063464 - 10 - PCT/EP2009/008608 mirror-symmetrical manner with regard to the longitudinal axis (X) of the vehicle.

6. The crusher as claimed in either of the preceding 5 claims 1 and 2, characterized in that the deflection plates (14) of two crawler units (2) that are arranged parallel to one another and in a mirror-symmetrical manner with regard to the longitudinal axis (X) of the vehicle are tilted, 10 starting from a position in which they are arranged perpendicularly to the longitudinal axis (X) of the vehicle, once in the direction towards the midpoint (M) of the vehicle and once away from the midpoint (M) of the vehicle, such that, as 15 seen in the direction of forward travel (V), the material to be cleared is guided once towards the inside between the two crawler units (2) and once towards the outside laterally next to the associated crawler unit (2). 20

7. The crusher as claimed in one of the preceding claims, characterized in that there is provided a third crawler unit (2), which, as seen in the direction of forward travel (V), is arranged 25 substantially centrally in front of the two crawler units (2) that are arranged parallel to one another and in a mirror-symmetrical manner with regard to the longitudinal axis (X) of the vehicle, wherein a deflection plate (14) is 30 likewise associated with the third crawler unit (2), said deflection plate having an arrow shape pointing in the direction of forward travel (V).

8. The crusher as claimed in one of the preceding 35 claims, characterized in that each deflection plate (14) is dimensioned and held such that the active width (W) between the lateral edges of one deflection plate (14) is greater than the width WO 2010/063464 - 11 - PCT/EP2009/008608 (B) of the crawler unit (2) to be protected or of the crawler track to be protected or of the drive units (A) of the crawler tracks.