Hanging processing device coupling to mobile mineral material processing plant

Abstract

A system, method (1400), and mobile mineral material processing plant for supporting (1410) a hanging bracket by a main frame of a mobile mineral material processing plant, including supporting (1210) a hanging bracket by a main frame or a processing device of a mobile mineral material processing plant (100); pivotably supporting (1220) a processing device support (320) by a remaining one of the main frame and the processing device; supporting (1440) a latch counterpart by the hanging bracket; supporting (1450) the processing device to the main frame by the processing device support, when the latch structure is in the latching configuration, through the latch structure, and the latch counterpart; and pivoting (1460) by a latching actuator configured the processing device support so that the processing device support carries the latch structure from the latching configuration to the releasing configuration allowing pivoting the processing device downwards.

Description

[0001] HANGING PROCESSING DEVICE COUPLING TO MOBILE MINERAL MATERIAL

[0002] PROCESSING PLANT

[0003] TECHNICAL FIELD

[0004] The present disclosure generally relates to hanging processing device coupling to mobile mineral material processing plant.

[0005] BACKGROUND

[0006] This section illustrates useful background information without admission of any technique described herein representative of the state of the art.

[0007] Mobile mineral material processing plants typically comprise a movable platform. The movable platform may have crawler tracks, wheels, or skids. If the mobile mineral material processing plant is equipped with a crusher, the crusher is typically placed on the movable platform. A processing device such as a screen, conveyor, magnetic separator, and / or a feeder, on the other hand, may be hung in line with the platform.

[0008] An angle of the processing device can be varied by changing an angle in which the processing device hangs. In one construction, a processing device frame is pivotably attached at a lower edge to the platform. A support rod of adjustable length attaches an upper edge to the platform. By adjusting the length of the support rod, the angle of the processing device can be changed.

[0009] The adjustable support rod may be also equipped with a hydraulic piston for changing the adjustment. For run-time suspension of the processing device, the adjustable rod can be provided with a telescopic support that has two or more locking lengths. It is also possible to provide an intermediate subframe arrangement between a mobile platform of a mineral material processing plant and hanging processing equipment. By attaching the hanging processing equipment to the intermediate subframe arrangement the angle and adjusting an angular orientation of the intermediate subframe relatively to the platform, the hanging processing equipment can be tilted to different angles. It is even possible to provide a latching arrangement for simplifying the adjustment of the angle of the intermediate subframe.

[0010] Mobility and site efficiency both favour compact structures. A typical mobile mineral material processing plant is that compact that maintenance often requires dissembling parts such as screen decks or conveyors. The time consumed by maintenance is increased by such dissembling operations. Moreover, the dissembling also often requires heavy lifting, which may require using jacks or machines available on site, and I or several people. Structural parts are typically heavy. It is therefore desirable to improve balancing between operational capabilities and ease of maintenance.

[0011] SUMMARY

[0012] The appended claims define the scope of protection. Any examples and technical descriptions of apparatuses, products and / or methods in the description and / or drawings not covered by the claims are presented not as embodiments of the invention but as background art or examples useful for understanding the invention.

[0013] According to a first example aspect there is provided a system comprising a hanging bracket attachable to a main frame or to a processing device of a mobile mineral material processing plant; a processing device support pivotably attachable to a remaining one of the processing device and the main frame; and a latch structure carried by the processing device support movably between a releasing configuration and a latching configuration; the hanging bracket comprising a latch counterpart; the processing device support being configured to support the processing device to the main frame, when the latch structure is in the latching configuration, through the latch structure, and the latch counterpart; and the system further comprising a latching actuator configured to pivot the processing device support so that the processing device support carries the latch structure from the latching configuration to the releasing configuration allowing pivoting the processing device downwards.

[0014] The processing device may be a conveyor. The conveyor may be angle adjustable to discharge material at two or more different heights.

[0015] The processing device may be a screen. The screen may be angle adjustable. Angle adjustment of the screen may change height of the screen.

[0016] The system may further comprise a processing device connector configured to pivotably attach the processing device support to the processing device.

[0017] In the releasing configuration, the processing device support may allow pivoting the processing device to any one of two or more operating configurations. In the releasing configuration, the processing device support may allow pivoting the processing device to a maintenance configuration that is below a current operating configuration. In the releasing configuration, the processing device support may allow pivoting the processing device upward. In the releasing configuration, the processing device support may allow pivoting the processing device downward.

[0018] The system may further comprise a processing device actuator configured to pivot the processing device. The processing device actuator may be configured to pivot the processing device to one of the operating configurations from the maintenance configuration or from another operating configuration. The processing device actuator may be configured to pivot the processing device to the maintenance configuration from the current operating configuration.

[0019] The processing device may be an exit conveyor. The exit conveyor may be directed in a longitudinal direction of the mobile mineral material processing plant.

[0020] One of the latch structure and the latch counterpart may comprise one or more latching slots. The latch structure may comprise one or more latching slots. The latch counterpart may comprise one or more latching slots. One of the latch structure and the latch counterpart may comprise three latching slots. One of the latch structure and the latch counterpart may comprise four latching slots. One of the latch structure and the latch counterpart may comprise five latching slots.

[0021] The latch counterpart may be configured couple the latch structure with the bracket at different distances from the main frame. The latch counterpart may comprise one or more latching slots. The one or more latching slots may reside along a path on which the latch structure moves when the processing device is pivoted while the processing device support is in the releasing configuration.

[0022] The processing device support may be configured to enable pivoting the processing device to a more elevated angle without using the latching actuator to pivot the processing device support to the releasing configuration. The latch structure and the latch counterpart may be collectively configured to allow pivoting the processing device to the more elevated angle without moving the processing device support by the latching actuator. The latch structure or the latch counterpart may comprise one or more latching slots having a bottom surface inclination configured to cause the latch structure to elevate sufficiently to allow pivoting the processing device to the more elevated angle without moving the processing device support by the latching actuator. The latch structure or the latch counterpart may comprise a protruding shape shaped to engage with a latching slot when used to hang the processing device and to climb upwards in the latch slot when the processing device is being elevated. The latch structure may be pivotably coupled to the processing device support. Alternatively, the latch structure may be a rigid part of the processing device support. The latch structure may be an integral part of the processing device support.

[0023] Advantageously, the processing device support may firstly provide a hanging support that couples the processing device to the platform frame. The processing device support may have a frame structure that is laterally stiffened, e.g., by one or more triangle forms, so as to improve lateral support for the processing device. Secondly, the processing device support may operate by its own weight as a latch structure closing device that requires no external power. On pivoting the processing device to a more elevated angle so that the processing device support climbs to a next latching slot, or on releasing the latching actuator, the weight of the processing device support brings down the latch structure against a latching slot and maintains the latch structure engaged against the latching slot.

[0024] There may be two latch structures and latch counterparts on opposite two lateral sides of the processing device support. Advantageously, using two latch structures and two latch counterparts may improve lateral support of the processing device.

[0025] The latching actuator may be a rotating actuator. The latching actuator may comprise a gear. The latching actuator may comprise an electric motor. The latching actuator may comprise a hydraulic motor. The latching actuator may comprise a pneumatic motor. Advantageously, by using a rotating actuator to implement the latching actuator may enable conveniently positioning the latching actuator at a pivoting point of the processing device support.

[0026] The latching actuator may be a linear actuator. The latching actuator may comprise a gear. The latching actuator may comprise an electric motor. The latching actuator may comprise a hydraulic motor. The latching actuator may comprise a pneumatic motor. The latching actuator may comprise a hydraulic cylinder. The latching actuator may comprise a pneumatic cylinder. The latching actuator may comprise a jack. The latching actuator may comprise a winch. Advantageously, a linear actuator may be robust and simple to install.

[0027] The latching actuator may be attached to the processing device. The system may comprise two latching actuators. The two latching actuators may reside on opposite lateral sides of the processing device. Advantageously, the two latching actuators may provide fail-safety improving redundancy. Advantageously, the two latching actuators may reduce twisting forces on the processing device support. Advantageously, the two latching actuators may improve alignment of the latch structures on two opposite lateral sides of the processing device support. The hanging bracket may be configured to reside entirely above proximate parts of the processing device. The proximate parts of the processing device may refer to a region of the processing device at same longitudinal and lateral region with the hanging bracket.

[0028] The latch structure and the latch counterpart may be configured to engage with a single latch slot. Alternatively, the latch structure and the latch counterpart may be configured to engage with two or more latch slots.

[0029] Advantageously, the system may enable adapting the angle of the processing device without presence of an operator next to the processing device.

[0030] The processing device support may comprise a first end and a second end. The processing device support may comprise a first end portion extending from 0 to 25 per cent of length of the processing device support from the first end towards the second end. The processing device support may comprise a second end portion extending from 50 to 100 per cent of length of the processing device support from the first end towards the second end.

[0031] The processing device connector may reside in the second end portion.

[0032] The latch structure may reside in the first end portion.

[0033] The processing device actuator may comprise a hydraulic cylinder. The processing device actuator may comprise an electric motor. The processing device actuator may comprise a jack. The processing device actuator may comprise a winch.

[0034] The hanging bracket may be attachable to the main frame by welding. The hanging bracket may be attachable to the main frame by bolts. The hanging bracket may be attachable to the main frame by an attaching pin. The hanging bracket may be attachable to the main frame jointly with the processing device actuator.

[0035] The processing device actuator may be attachable to the main frame by an attaching pin.

[0036] The latching actuator may be configured to pivot the processing device support relatively to the processing device.

[0037] According to a second example aspect there is provided a mobile mineral material processing plant comprising a mobile platform and the system of the first example aspect. The mobile mineral material processing plant may further comprise a crusher. The crusher may be a jaw crusher. The crusher may be a cone crusher. The crusher may be an impact crusher. The crusher may be a roller crusher. The crusher may be a gyratory crusher. The mobile mineral material processing plant may further comprise a feeder. The mobile mineral material processing plant may further comprise a screen. The screen may be a multideck screen. The mobile mineral material processing plant may be self-propelling. The mobile mineral material processing plant may be towable.

[0038] According to a third example aspect there is provided a method comprising supporting a hanging bracket by a main frame or a processing device support of a mobile mineral material processing plant; pivotably supporting a processing device support by a remaining one of the main frame and the processing device; and carrying by the processing device support a latch structure between a releasing configuration and a latching configuration; supporting a latch counterpart by the hanging bracket; supporting the processing device to the main frame by the processing device support, when the latch structure is in the latching configuration, through the hanging bracket, the latch, and the latch counterpart; and pivoting by a latching actuator configured the processing device support so that the processing device support carries the latch structure from the latching configuration to the releasing configuration allowing pivoting the processing device downwards.

[0039] The method may further comprise pivoting the processing device support by the latching actuator so that the latch structure is allowed to move from the releasing configuration to the latching configuration.

[0040] The method may further comprise hanging the processing device, in any one of two or more operating configurations or in a maintenance configuration, from the main frame with the hanging bracket and the processing device support.

[0041] Different non-binding example aspects and embodiments have been illustrated in the foregoing. The embodiments in the foregoing are used merely to explain selected aspects or steps that may be utilized in different implementations. Some embodiments may be presented only with reference to certain example aspects. It should be appreciated that corresponding embodiments may apply to other example aspects as well.

[0042] BRIEF DESCRIPTION OF THE FIGURES

[0043] Some example embodiments will be described with reference to the accompanying figures, in which:

[0044] Fig. 1 shows a mobile mineral material processing plant comprising a system according to an example embodiment;

[0045] Fig. 2 the system of Fig. 1 in a first operating configuration; Fig. 3 shows the system of Figs. 1 and 2 in a maintenance configuration;

[0046] Fig. 4 shows some enlarged details of Fig 2;

[0047] Fig. 5 shows a side view of the system of Figs. 1 to 4 in a third operating configuration;

[0048] Fig. 6 shows a side view of the system of Fig. 5 in a first intermediate configuration;

[0049] Fig. 7 shows a side view of the system of Fig. 5 in a second intermediate configuration;

[0050] Fig. 8 shows a side view of the system of Fig. 5 in a third intermediate configuration;

[0051] Fig. 9 shows a side view of the system of Fig. 5 in a fourth intermediate configuration;

[0052] Fig. 10 shows a side view of the system of Fig. 5 in a second operating configuration;

[0053] Fig. 11 shows a side view of some details of a system of an alternative example embodiment in an operating configuration;

[0054] Figs. 12 and 13 show further different systems of alternative example embodiments; and Fig. 14 shows a flow chart illustrating a method according to an example embodiment.

[0055] DETAILED DESCRIPTION

[0056] In the following description, like reference signs denote like elements or steps.

[0057] Fig. 1 shows a mobile mineral material processing plant 100 comprising a system 150 according to an example embodiment. The mobile mineral material processing plant 100 of Fig. 1 comprises a feeder 110, a crusher 120, a platform frame 130, a track crawler base 140, and a conveyor 160 exemplifying a hanging processing device. The platform frame 130 comprises a fork 132 from which the system 150 provides a hanging support for the conveyor 160.

[0058] Fig. 2 shows a side view of the system 150 of Fig. 1 in a first operating configuration and Fig. 3 shows a side view of the system 150 of Fig. 1 in a maintenance configuration. Fig. 4 shows some enlarged details of Fig 2 and Figs. 5 to 10 show various stages of the system 150 when changing configuration of the processing device or conveyor 160 in the example of Figs. 1 and 2.

[0059] The system 150 comprises a hanging bracket 310 attachable to the main frame 130 or to a processing device 160 of the mobile mineral material processing plant; a processing device support 320 pivotably attachable to a remaining one of the main frame 130 and the processing device 160; and a latch structure 322 carried by the processing device support 320 movably between a releasing configuration and a latching configuration.

[0060] In an example embodiment, the hanging bracket 310 defines a latch counterpart 312. In an example embodiment, the processing device support 320 is configured to support the processing device 160 to the main frame 130, when the latch structure 322 is in the latching configuration, through the hanging bracket 310, the latch structure 322, and the latch counterpart 312.

[0061] In an example embodiment, the latch structure 322 comprises a projection that is directly formed into the processing device support 320. In an example embodiment, the projection is coupled through an intermediate part such as a connector made of steel sheet or cast iron. In an example embodiment, the processing device support 320 is made by casting and comprises the latch structure as a cast portion. In an example embodiment, the processing device support 320 is made by welding different components together. In an example embodiment, the processing device support 320 is made by bolting together different components that form the latch structure 320 including the latch structure 322.

[0062] In an example embodiment, the hanging bracket 310 is an integral part of the frame 130 or the fork 132 of the frame 130.

[0063] In an example embodiment, the latch counterpart 312 comprises a projection that is directly formed into the latch counterpart 312. In an example embodiment, the projection is coupled through an intermediate part such as a connector made of steel sheet or cast iron. In an example embodiment, the latch counterpart 312 is made by casting and comprises the latch structure as a cast portion. In an example embodiment, the latch counterpart 312 is made by welding different components together. In an example embodiment, the latch counterpart 312 is made by bolting together different components that form the latch counterpart 312.

[0064] Depending on embodiment, it is thus possible to that either the latch structure or the latch counterpart comprises a part that operates as a latch and that the remaining one comprises a part co-operating with the latch. In the present disclosure, unless otherwise defined, the thing that is movably supported by the processing device support is referred to as a latch structure. As seen in Figs. 10 to 13, either the part comprising the latch or the part cooperating with the latch may also be movably supported by either the frame of the processing device or by the processing device.

[0065] In an example embodiment, the system further comprises a latching actuator 340 configured to pivot the processing device support 320 so that the processing device support 320 carries the latch structure 322 from the latching configuration to the releasing configuration allowing pivoting the processing device 160 downwards. In an example embodiment, pivoting of the processing device 160 is also possible upwards when the latch structure is in the releasing configuration, e.g., within a movable range of the processing device 160. In Figs. 3 and 11 , the latching actuator 340 is drawn as attached to the processing device 160. In an example embodiment, the latching actuator 340 is attached to the processing device support 320.

[0066] In an example embodiment, the system further comprises a processing device connector configured to pivotably attach the processing device support 320 to the processing device. In an example embodiment, the processing device connector comprises a joining pin.

[0067] In an example embodiment, the system further comprises a processing device actuator 330 configured to pivot the processing device, such as a hydraulic or pneumatic cylinder, an electric actuator, a winch, or a jack.

[0068] In an example embodiment, the processing device is an exit conveyor. In an example embodiment, the processing device is a screen. In an example embodiment, the processing device is a magnetic separator.

[0069] In an example embodiment, the latch structure 322 and the latch counterpart 312 are configured to couple the latch structure 322 with the hanging bracket 310 at different distances from the main frame 130.

[0070] In an example embodiment, the processing device support 320 is configured to enable pivoting the processing device to a more elevated angle without using the latching actuator 340 to pivot the processing device support 320 to the releasing configuration. Fig. 4 discloses an example embodiment in which latch counterpart 310 comprises one or more latching slots 410.

[0071] In an example embodiment, the one or more latching slots 410 reside along a path on which the latch structure 322 moves when the processing device 160 is pivoted while the processing device support 320 is in the releasing configuration.

[0072] In an example embodiment, the latch slot 410 has a bottom surface inclination 412 for facilitating moving of the latch structure 322 to the releasing configuration. For example, on pushing the latch structure 322 backward against the inclination 412 by starting to lift the processing device, the latch structure 322 would move backwards and upwards sufficiently to then allow lifting the processing device support 320 and the latch structure 322 by the latching actuator 340. This may be particularly useful in an embodiment in which the latch slot 410 is shaped to inhibit elevation of the latch structure 322 when engaged with the latch slot 410.

[0073] In an example embodiment (not shown), the latch structure 322 is pivotably coupled to the processing device support 320, e.g., with a hinge and a spring to bias the latch structure 322 back. In an example embodiment, the latch structure 322 is a rigid part of the processing device support 320 as shown in the drawings. In yet another example embodiment, the latch structure 322 is releasably attachable, e.g., by a latch structure pin.

[0074] In an example embodiment, the system comprises two latching actuators 340 on opposite lateral sides of the conveyor.

[0075] Figs. 4 to 10 illustrate using a single latch slot. Alternatively, the latch structure 322 is configured to engage with two or more latch slots.

[0076] Figs. 5 to 10 illustrate a sequence of adjusting a processing device angle. Initially, processing device support 320 carries weight of the processing device 160 through the latch structure 322 and the latch counterpart 312, as also illustrated by Fig. 5, wherein the system is in a third operating configuration. A latch is fully engaged with the latching slot 410. Following Figs. 5 to 7 in progression, the processing device 160 is slightly elevated by the processing device actuator 330 so that the latch slightly retracts or pressure against the latching slot 410 is relieved and the system 150 transitions into a first intermediate configuration, see Fig. 6. Then, the latching actuator 340 lifts the processing device support 320 entirely out of the latching slot 410 so that the processing device 160 becomes freely movable downwards, or upwards if desired and as illustrated by this series of drawings. Now the system 150 is in a second intermediate configuration, as shown in Fig. 7. The processing device 160 is then moved by the processing device actuator 330 slightly beyond the desired new operating configuration that is a second operating configuration in Fig. 10, to a third intermediate configuration shown in Fig. 8. The latching actuator 340 then lowers down the processing device support 320 onto a bottom surface of the latching slot 140, preferably onto an inclined bottom surface 412 of the latching slot 140, as shown in Fig. 9 in the fourth intermediate configuration. The processing device actuator then allows the processing device 160 to slightly lower and come to the second operating configuration resting on bottom of the latching slot 410.

[0077] In an example embodiment, the latching slot 410 is shaped to have a concave form to more firmly secure the latch structure 322 to the latch counterpart 312. Preferably, the latch counterpart 312 is shaped to allow moving the processing device support 320 to the releasing configuration of the latch structure 322 without slightly relieving force applied to the latch structure 322 and the latch counterpart 312. However, by relieving the force with the processing device actuator 330, abrasion can be mitigated.

[0078] Fig. 11 shows a side view of some details of a system of an alternative example embodiment in an operating configuration. In this case, the processing device support 320’ comprises a different latch structure 322’ that comprises a plurality of latching slots 410 and the hanging bracket 310 comprises a version of the latch counterpart 312 that comprises a latch for engaging with the latch structure. In yet another example embodiment (not shown), there is only one latching slot 410 in the latch structure and two or more latch counterparts at different positions of the fork 132 of the platform frame 130 and I or of the platform frame.

[0079] Figs. 12 and 13 show further different systems of alternative example embodiments illustrating some variability within the scope of the present invention. In Fig. 12, a part similar to the hanging bracket of Fig. 10 is pivotable by the latching actuator, while a rigidly connected arm is attached to the processing device. In Fig. 13, a part similar to the hanging bracket of Fig. 10 is now fixedly attached to the processing device and a pivotable processing device support is attached to the frame. Notably, it is not necessary to form rigid connections as drawn: instead, the latching parts drawn as rigidly connected may also be pivotable or slidable, for example. It is also possible to use more than one latching actuator to move two co-operating movable latching parts.

[0080] Fig. 14 shows a flow chart according to an example embodiment. Fig. 14 illustrates a method 1400 for coupling a hanging processing device to a mobile mineral material processing plant that comprises a mobile platform, the mobile platform comprising a main frame, the method comprising any one of the following steps:

[0081] 1410: supporting a hanging bracket 310 by a main frame 130 or a processing device 160 of a mobile mineral material processing plant 100;

[0082] 1420: pivotably supporting a processing device support 320 by a remaining one of the main frame 130 and the processing device 160;

[0083] 1430: carrying by the processing device support 320 a latch structure 322 between a releasing configuration and a latching configuration;

[0084] 1440: supporting a latch counterpart 312 by the hanging bracket 310;

[0085] 1450: supporting the processing device 160 to the main frame by the processing device support 320, when the latch structure 322 is in the latching configuration, through the latch structure 322, and the latch counterpart 312; and

[0086] 1460: pivoting by a latching actuator 340 configured the processing device support 320 so that the processing device support 320 carries the latch structure 322 from the latching configuration to the releasing configuration allowing pivoting the processing device 160 downwards.

[0087] In an example embodiment, the system further comprises a controller for controlling adjustment of the angle of the processing device. The controller may be configured to automatically operate both the processing device actuator 330 and the latching actuator 340 for moving the processing device so a desired configuration.

[0088] Various embodiments have been presented. It should be appreciated that in this document, words comprise; include; and contain are each used as open-ended expressions with no intended exclusivity. The foregoing description has provided by way of non-limiting examples of particular implementations and embodiments a full and informative description of the best mode presently contemplated by the inventors for carrying out the invention. It is however clear to a person skilled in the art that the invention is not restricted to details of the embodiments presented in the foregoing, but that it can be implemented in other embodiments using equivalent means or in different combinations of embodiments without deviating from the characteristics of the invention.

[0089] Furthermore, some of the features of the afore-disclosed example embodiments may be used to advantage without the corresponding use of other features. As such, the foregoing description shall be considered as merely illustrative of the principles of the present invention, and not in limitation thereof. Hence, the scope of the invention is only restricted by the appended patent claims.

Claims

CLAIMS1. A system (150) comprising a hanging bracket (310) attachable to a main frame (130) or to a processing device (160) of a mobile mineral material processing plant (100); a processing device support (320) pivotably attachable to a remaining one of the processing device (160) and the main frame (130); and a latch structure (322) carried by the processing device support (320) movably between a releasing configuration and a latching configuration; the hanging bracket (310) comprising a latch counterpart (312); the processing device support (320) being configured to support the processing device (160) to the main frame (130), when the latch structure (322) is in the latching configuration, through the latch structure (322), and the latch counterpart (312); and the system further comprising a latching actuator (340) configured to pivot the processing device support (320) so that the processing device support (320) carries the latch structure (322) from the latching configuration to the releasing configuration allowing pivoting the processing device (160) downwards.

2. The system of claim 1 , wherein in the releasing configuration, the processing device support (320) allows pivoting the processing device (160) to a maintenance configuration that is below an operating configuration.

3. The system of claim 2, further comprising a processing device actuator (330) configured to pivot the processing device (160) to the operating configurations from the maintenance configuration.

4. The system of any one of preceding claims, wherein the latch counterpart (312) comprises one or more latching slots (410) for engaging with the latch structure (322).

5. The system of any one of claims 1 to 3, wherein the latch structure (322) comprises one or more latching slots (410) for engaging with the latch counterpart (312).

6. The system of claim 5, wherein the latch structure (322) comprises a plurality of latching slots (410) along a path on which the latch structure (322) moves when the processing device (160) is pivoted while the processing device support (320) is in the releasing configuration.

7. The system of any one of claims 4 to 6, the one or more latching slots (410) comprising a bottom surface inclination (412) for facilitating moving of the latch structure (322) to the releasing configuration.

8. The system of any one of preceding claims, wherein the processing device (160) is configured to enable pivoting the processing device (160) to a more elevated angle without using the latching actuator (340) to pivot the processing device support (320) to the releasing configuration.

9. The system of any one of preceding claims, wherein the latch structure (322) is a rigid part of the processing device support (320).

10. The system of any one of preceding claims, comprising two of the latch structures (322) and two latch counterparts (312) on opposite two lateral sides of the processing device support (320).

11. The system of any one of preceding claims, wherein the latching actuator (340) is attached to the processing device (160).

12. The system of any one of preceding claims, comprising two of the latching actuators (340).

13. The system of any one of preceding claims, further comprising a screen, a conveyor (160), a magnetic separator, or a mineral material crusher (120), such as a jaw crusher, a cone crusher, an impact crusher, a roller crusher, or a gyratory crusher.

14. A mobile mineral material processing plant (100) comprising a mobile platform (140) and the system (150) of any one of preceding claims.

15. A method (1400) comprising supporting (1410) a hanging bracket (310) by a main frame (130) or a processing device (160) of a mobile mineral material processing plant (100); pivotably supporting (1420) a processing device support (320) by a remaining one of the main frame and the processing device (160); carrying (1430) by the processing device support (320) a latch structure (322) between a releasing configuration and a latching configuration; supporting (1440) a latch counterpart (312) by the hanging bracket (310); supporting (1450) the processing device (160) to the main frame by the processing device support (320), when the latch structure (322) is in the latching configuration, through the latch structure (322), and the latch counterpart (312); and pivoting (1460) by a latching actuator (340) configured the processing device support (320) so that the processing device support (320) carries the latch structure (322) from the latching configuration to the releasing configuration allowing pivoting the processing device (160) downwards.

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