Bypass chute for mobile processing plant

Abstract

A mineral material processing plant, a system and a method in a mobile mineral material processing plant. The plant has a prescreen (140, 141, 150) and a crusher (170). A mineral material crusher bypass chute (160) is supported (601) and pivoted (602) between an operational configuration and a lowered service configuration. In the operational configuration, the bypass chute (160) directs (603) mineral material that has passed the prescreen (140, 141, 150) to bypass the crusher (170). In the lowered service configuration, the bypass chute (160) provides (604) a work platform below the prescreen (140, 141, 150).

Description

Technical Field

[0001] This disclosure generally relates to maintenance access for pre-screen media in mobile equipment. Background Technology

[0002] This section provides useful background information, but does not acknowledge that any technology described herein represents existing technology.

[0003] Currently, mobile equipment for mineral material processing includes a screening stage and a subsequent crushing stage. For simplicity, the screening stage typically uses gravity to at least partially convey material from the screen medium forward to the crusher for further crushing. This requires positioning the screen medium at a relatively high position so that oversized particles can flow downwards towards the crusher inlet.

[0004] The screening media requires maintenance. In mobile equipment, accessing the screening media may require disassembling some components to create a passage and using scaffolding, etc., to reach it. However, any time spent obtaining access to the screening media for service extends maintenance downtime, thus reducing productivity. Furthermore, when using various freestanding climbing structures, it may take some time to secure these structures before maintenance personnel begin climbing to the screening media. Positioning scaffolding, etc., sufficiently close to the screening media service access point can also present difficulties.

[0005] The purpose of this disclosure is to solve or alleviate some of the above-mentioned problems, or at least to provide a new technical solution for obtaining a mobile equipment screening media maintenance channel. Summary of the Invention

[0006] The appended claims define the scope of protection. Examples and technical descriptions of any devices, products, and / or methods not covered by the claims in the specification and / or drawings are not intended as embodiments of the invention, but rather as background technology or examples to aid in understanding the invention.

[0007] According to a first exemplary aspect, a system for a mobile mineral material processing device is provided, the mobile mineral material processing device including a pre-screening and crushing machine, the system comprising: Bypass chute for mineral material crusher; A pivot, configured to pivot the mineral material crusher bypass chute between a working configuration and a lowered maintenance configuration; wherein... In the operating configuration, the bypass chute guides pre-screened mineral materials around the crusher; and In the lowered maintenance configuration, the bypass chute provides a working platform below the pre-crusher screen.

[0008] The bypass chute may include a crusher-facing surface, which faces the crusher in the working configuration. In a lowered maintenance configuration, the crusher-facing surface can provide a working platform.

[0009] The system may include safety barriers. The bypass chute may include safety barrier attachments configured to detachably attach the safety barrier to the bypass chute when it is in a lowered maintenance configuration. The safety barrier attachments may be tool-free attachments. Tool-free attachments can be used without tools. The safety barrier attachments may include one or more slots for receiving corresponding shafts. The system may include storage attachments for the safety barriers.

[0010] The system may include a ladder. The bypass chute may include a ladder attachment configured to detachably connect the ladder to the bypass chute when the bypass chute is in a lowered maintenance configuration. The ladder attachment may be a tool-free attachment. Tool-free attachments can be used without tools. The ladder attachment may include one or more slots for receiving corresponding shafts. The system may include a storage attachment for the ladder. The ladder may be integrated with the bypass chute.

[0011] Storage attachments enable detachable accessories to mobile mineral processing equipment, such as attachments to the side of the crusher, between the crusher and the bypass chute when in the working position, or on the outer surface of the bypass chute.

[0012] The pivot can be configured to allow the bypass chute to pivot at least 60, 70, or 80 degrees. The pivot can be configured to allow the bypass chute to pivot up to 70, 80, or 90 degrees. The pivot can be configured to allow the bypass chute to pivot 75 ± 10 degrees or 75 ± 15 degrees.

[0013] The pivot may include a pivot rod. The pivot may include a groove structure defining a groove configured to mate with the pivot rod. The groove may be formed on a side of the bypass chute. The groove may have an opening such that the bypass chute can be removed from the pivot rod by sliding the opening of the bypass chute to align with the pivot rod. The bypass chute is movable such that the pivot rod is aligned with the opening of the groove, allowing for removal of the bypass chute. The shape of the groove may include one or more bends. The system may include groove structures on both sides of the bypass chute. The groove may be configured to allow for longitudinal adjustment of the bypass chute. Longitudinal adjustment allows the work platform to be used for maintenance of different components or parts of the mobile mineral processing equipment.

[0014] The bypass chute may include a longitudinal position adjustment arrangement. The longitudinal position adjustment arrangement may include a chute structure. The longitudinal position adjustment arrangement may include telescopic supports.

[0015] The bypass chute may include a side branch. The side branch may be pivotable so that, when the mobile mineral material handling equipment is located on flat ground, the bypass chute can be pivoted to a lowered maintenance configuration. The side branch may be locked to a pivoted position, in which the side branch provides steps for climbing to the work platform.

[0016] The system may include levers for pivoting a bypass chute. The levers may be coupled at or near a pivot. The levers may be detachably attached, for example, by inserting or bolting to the bypass chute. The levers may be long enough to allow an operator to pivot the bypass chute upwards or downwards. The system may include two levers on opposite sides of the mobile mineral processing equipment. The levers, bypass chute, and pivot may be configured such that the maximum force required for pivoting using the levers is 800 N or 500 N. The system may include a spring for connecting the bypass chute to the mobile mineral processing equipment, such that the spring is tensioned when the bypass chute is pivoted downwards to reduce the maximum force. The reduced maximum force may be at most 250 N or at most 350 N.

[0017] The system may include a latch configured to automatically lock the bypass chute in its operating configuration when the latch is attached to the mobile mineral material processing equipment, particularly to the main frame of the mobile mineral material processing equipment.

[0018] The system may include a first actuator for moving a bypass chute between a working configuration and a lowered maintenance configuration. The first actuator may include a hydraulic cylinder. The first actuator may include a pneumatic cylinder. The first actuator may include an electric motor. The first actuator may include a winch. The first actuator may include a jack. The first actuator can be manually operated. Side branches may pivot via the same first actuator or a second actuator. The second actuator may be the same as or different from the first actuator. The second actuator may include a hydraulic cylinder. The second actuator may include a pneumatic cylinder. The second actuator may include an electric motor. The second actuator may include a winch. The second actuator may include a jack. The second actuator can be manually operated. When the mobile mineral material handling equipment is located on a level ground, the working platform may be a horizontal platform. A horizontal platform may refer to a total plane with a deviation from the horizontal plane of a percentage D, where D is at most 10, 5, or 1. The total plane may refer to the plane defined by the working platform when protrusions less than 5 mm or 10 mm are ignored.

[0019] The working platform can extend longitudinally between the downstream end of the pre-screen and the vibrator of the mobile mineral material processing equipment. The vibrator can be configured as a vibrating feeder to operate the pre-screen. The working platform can extend to at least half the lateral length of the vibrator.

[0020] A bypass chute can extend between the side panels of the main frame. The bypass chute can occupy a significant portion of the lateral space between opposite sides of the main frame at a pivot point. The bypass chute can extend at the pivot point beyond W percentage of the lateral space, where W is at least 80, 90, or 95%. Advantageously, the bypass chute can be made as wide as possible to reduce wear on its inner surface. As a further or synergistic advantage, the work platform can extend virtually beyond the entire space between the side panels, making it less likely for tools or parts being installed or removed to fall into the gap.

[0021] By pivoting the bypass chute of the mineral crusher to a lowered maintenance configuration, a further synergistic advantage is achieved by simultaneously providing a working platform and access to maintenance components at the rear of the crusher. For example, mounting wedges for vulnerable parts of the jaw crusher can be attached via bolts extending through the rear wall of the crusher. The nuts for tightening the bolts can be located on the outside of the rear wall. Thanks to the pivotable bypass chute, it is possible to avoid the need to create holes in the bypass chute for accessing the nuts.

[0022] The crusher can be located downstream of the pre-screen.

[0023] According to a second exemplary aspect, a method is provided, the method comprising, in a mobile mineral material processing device including a pre-screening unit and a crusher, the system comprising: Supporting the bypass chute of the mineral material crusher; The bypass chute of the mineral crusher pivots between the working configuration and the lowered maintenance configuration; In the working configuration, pre-screened mineral materials are guided around the crusher via a bypass chute; In the lowered maintenance configuration, a working platform is provided below the crusher's front screen via a bypass chute.

[0024] According to a third exemplary aspect, an apparatus is provided that includes means for performing the method of the second exemplary aspect.

[0025] According to a fourth exemplary aspect, a mobile mineral material processing apparatus is provided, which includes the system of the first exemplary aspect or the apparatus of the third exemplary aspect.

[0026] Different non-limiting exemplary aspects and embodiments have been described above. The embodiments described above are only for explaining selected aspects or steps that may be used in different implementations. Some embodiments may have been described with reference only to certain exemplary aspects. It should be understood that corresponding embodiments may also be applied to other exemplary aspects. Attached Figure Description

[0027] Some exemplary embodiments will be described with reference to the accompanying drawings, in which: Figure 1and Figure 2 Details of the mobile mineral material processing equipment according to exemplary embodiments are shown in both the working configuration and the maintenance configuration of the bypass chute; Figure 3 Details of a mobile mineral material processing apparatus according to an exemplary embodiment are shown when the bypass chute is in an alternative maintenance configuration; Figure 4 It shows Figures 1 to 3 Details of the pivot; Figure 5 A mineral material processing apparatus according to an exemplary embodiment is shown; Figure 6 Flowcharts illustrating the steps of different exemplary embodiments are shown. Detailed Implementation

[0028] In the following description, similar reference numerals denote similar elements or steps.

[0029] Figure 1 and Figure 2 Details of the mobile mineral material processing equipment 100 according to an exemplary embodiment are shown in both a working configuration and a maintenance configuration of the bypass chute 160. The maintenance configuration provides access below pre-screens 140, 141, and 150 for inspection and maintenance operations. A feed hopper 110 is provided for receiving and collecting mineral material onto a feeder 120 (e.g., a vibrating feeder). The feeder 120 conveys the mineral material to pre-screens 140, 141, and 150, which include a first pre-screen section 140, a second pre-screen section 141, and a third pre-screen section 150. The first and second pre-screen sections 140 and 141 are preferably coarse screens with grid bars. The third pre-screen section 150 is preferably a screen. The undersize fraction of the mineral material passes through pre-screens 140 and 141 into the third pre-screen 150. The oversize fraction enters the main branch 164 of the bypass chute 160, which is configured to guide the undersize fraction around the crusher 170. Conversely, the oversize fraction is guided from the pre-screen to the crusher 170. The mobile mineral processing equipment 100 is a self-propelled device with tracks 180. In one exemplary embodiment, the mobile mineral processing equipment 100 is towable. In one exemplary embodiment, the mobile mineral processing equipment 100 includes one or more wheels, skids, or outriggers.

[0030] A vibrator 130 is provided to vibrate the feeder 120, or the pre-screens 140, 141, 150, or both.

[0031] Pivot 161 is configured to pivot the mineral material crusher bypass chute between the working configuration and the lowered maintenance configuration.

[0032] Figure 1 Side branch 162 of bypass chute 160 is also shown. For example, the undersize portion of third prescreen 150 (or another portion) may be directed to side branch 162 to feed onto a different stack or side conveyor (not shown) than the main channel 164 through bypass chute 160.

[0033] Figure 1 The maintenance configuration of the bypass chute 160 is also shown by dashed lines, which is in Figure 2 This is also shown more clearly in the text. Furthermore, Figure 1 The safety barrier at the storage location is shown. Figure 2 The safety barrier 220 is shown when attached to the maintenance position.

[0034] In one exemplary embodiment, the bypass chute includes a safety guardrail attachment for use when the bypass chute is in a state such as Figure 2 In the lowered maintenance configuration shown, the safety barrier is detachably attached to the bypass chute. For example, the safety barrier attachment may include one or more slots for receiving corresponding shafts. In one exemplary embodiment, a storage attachment for the safety barrier is also provided.

[0035] exist Figure 2 In this embodiment, the side branch 162 of the bypass chute 160 appears to descend into the ground, below the level of the tracks. This embodiment is not unusable: suitable sand piles can be arranged so that the side branch 162 does not impact the ground upon descent. In one exemplary embodiment, the side branch 162 is provided with a hinge 166, such as... Figure 3 As shown. Therefore, the side branch 162 can be hinged, for example, hinged to the side, so that when the bypass chute 160 pivots to the maintenance configuration, the side branch 162 of the bypass chute 160 will not collide with the horizontal ground.

[0036] Figure 2 A lever 230 for pivoting the bypass chute 160 is also shown, located here near the pivot 161. In one exemplary embodiment, the system includes a spring 240 for connecting the bypass chute to a mobile mineral material processing device, such that the spring 240 is tensioned when the bypass chute is pivoted downwards to reduce the force required to pivot the bypass chute upwards.

[0037] In one exemplary embodiment, the system further includes a latch 250 configured to automatically lock the bypass chute 160 in its operating configuration when the latch 250 is attached to the mobile mineral material processing equipment, particularly to the main frame of the mobile mineral material processing equipment. In one exemplary embodiment, the latch is biased to engage with the bypass chute 160 or a mating member attached to the bypass chute 160.

[0038] Figure 3 Details of a mobile mineral material processing apparatus according to an exemplary embodiment are shown when the bypass chute 160 is in alternative maintenance configuration B, for example, for maintenance operations of the vibrator 130. In this exemplary embodiment, the bypass chute 160 is longitudinally movable from the basic maintenance configuration A to the alternative maintenance configuration B. For this purpose, an extendable support 310 is provided by forming an elongated groove for supporting the bypass chute on one or more support pins disposed on the main frame side of the mobile mineral material processing apparatus, preferably on both sides of the mobile mineral material processing apparatus. In this alternative maintenance configuration B, the work platform extends to both sides of the vibrator 130, thereby providing easy access to the vibrator 130, for example for adding grease through the lubrication nozzle (not shown) of the vibrator 130.

[0039] Figure 4 Details of pivot 161 are shown, including an elongated slot 410 and a pivot rod 420. The elongated slot 410, which may optionally have a bend, is formed on the side of the bypass chute 160 or attached to a slot member of the bypass chute 160. The elongated slot 410 has a base 412 for supporting the bypass chute 160 in the working configuration. Figure 4 Two partially stabilized adapters 414, 416 are also shown for supporting the bypass chute 160 in different lateral positions when aligned with the pivot rod 420.

[0040] In one exemplary embodiment, the elongated slot 410 also provides a simple disassembly mechanism: the slot may have an opening 418 that is wide enough to allow the pivot 420 to leave the elongated slot 410 when the bypass chute 160 moves to align the opening 418 with the pivot 420 and moves further to disengage the elongated slot 410 from the pivot 420. Figure 4 In one embodiment, the opening 418 opens upwards, making the bypass chute 160 easy to disassemble, but it may fall off if moved carelessly. In this respect, the opening can be blocked by a potentially offset stop to prevent the bypass chute 160 from accidentally falling off. In an exemplary embodiment, the opening 418 opens downwards. This may make it easier to lift the bypass chute out using a crane or excavator (e.g., via a chain).

[0041] Figure 5A mineral material processing apparatus 100 according to an exemplary embodiment is shown. The mineral material processing apparatus 100 includes, among other things, a magnetic separator 510, a sieve 520 for screening crushed material, a first discharge conveyor 530 for discharging mineral material output from a crusher 170 onto the sieve 520, and a discharge conveyor 440 for discharging the undersize portion from the sieve 520. The mineral material processing apparatus 100 typically also includes one or more side conveyors for conveying additional portions separated by the sieve 520, and / or portions that have already passed through pre-screening.

[0042] Figure 6 Flowcharts illustrating various steps of different exemplary embodiments are shown, including a variety of possible steps, some of which are optional, while others and / or some steps may be performed multiple times: 601. Support chute for mineral material crusher; 602. To pivot the bypass chute of the mineral crusher between the working configuration and the lowered maintenance configuration; 603. In the working configuration, pre-screened mineral materials are guided around the crusher via a bypass chute; 604. In the lowered maintenance configuration, a working platform is provided below the crusher's front screen via a bypass chute.

[0043] Various embodiments have been described. It should be understood that in this document, the words “including,” “comprising,” and “containing” are used as open-ended expressions and are not intended to exclude other content.

[0044] The foregoing description, through non-limiting examples of specific implementation methods and embodiments, has provided a comprehensive and beneficial illustration of the best mode of carrying out the invention as currently contemplated by the inventors. However, it will be apparent to those skilled in the art that the invention is not limited to the details of the above embodiments, but can be implemented using equivalent means or in different combinations of embodiments without departing from the characteristics of the invention.

[0045] Furthermore, some features of the exemplary embodiments disclosed above can be advantageously used without using other corresponding features. Therefore, the above description should be considered merely as illustrating the principles of the invention, and not as limiting the invention. Thus, the scope of the invention is defined only by the appended claims.

Claims

1. A system for a mobile mineral material processing device, the mobile mineral material processing device comprising a pre-screen (140, 141, 150) and a crusher (170), the system comprising: Bypass chute (160) for mineral material crusher; A pivot (161) configured to pivot the mineral material crusher bypass chute (160) between a working configuration and a lowered maintenance configuration; wherein, In the aforementioned operating configuration, the bypass chute (160) guides mineral material that has passed through the pre-screens (140, 141, 150) around the crusher (170); and In the lowered maintenance configuration, the bypass chute (160) provides a working platform below the pre-screens (140, 141, 150).

2. The system according to claim 1, wherein, The bypass chute (160) includes a crusher-facing surface that faces the crusher (170) in the working configuration; and In the lowered maintenance configuration, the crusher provides the working platform facing the surface.

3. The system according to claim 1 or 2, wherein, The system includes a safety barrier (220); and The bypass chute (160) includes a safety railing attachment configured to detachably attach the safety railing (220) to the bypass chute (160) when the bypass chute (160) is in the lowered maintenance configuration.

4. The system according to any one of the preceding claims, wherein, The system includes a ladder; and The bypass chute (160) includes a ladder attachment configured to detachably attach a ladder to the bypass chute (160) when the bypass chute (160) is in the lowered maintenance configuration.

5. The system according to any one of the preceding claims, wherein, The pivot (161) includes a pivot rod (420); and The pivot (161) includes a groove structure that defines an elongated groove (410) configured to mate with the pivot rod (420).

6. The system according to claim 5, wherein, The elongated groove (410) is formed on the side of the bypass chute (160).

7. The system according to claim 5 or 6, wherein, The bypass chute (160) is movable such that the pivot rod is aligned with the opening (418) of the elongated slot (410) and allows for disassembly of the bypass chute (160).

8. The system according to any one of the preceding claims, wherein, The bypass chute (160) includes a longitudinal position adjustment arrangement.

9. The system according to any one of the preceding claims, wherein, The bypass chute (160) includes a side branch; and The side branch (162) is pivotable so that when the mobile mineral processing equipment is located on flat ground, the bypass chute (160) can be pivoted to the lowered maintenance configuration.

10. The system according to any one of the preceding claims, comprising a first actuator for moving the bypass chute (160) between the working configuration and the lowered maintenance configuration.

11. The system according to any one of the preceding claims, wherein, When the mobile mineral material processing equipment is located on a horizontal ground, the working platform is a horizontal platform.

12. The system according to any one of the preceding claims, wherein, The working platform extends between the downstream end of the pre-screens (140, 141, 150) and the vibrator of the mobile mineral material processing equipment.

13. The system according to any one of the preceding claims, wherein, The bypass chute (160) fills most of the space at the pivot within the main frame of the mobile mineral material processing equipment in the lateral direction.

14. A method comprising a mobile mineral material processing apparatus including pre-screens (140, 141, 150) and a crusher (170), the method comprising: Support (601) Mineral material crusher bypass chute (160); The bypass chute (160) of the mineral material crusher is pivoted (602) between the working configuration and the lowered maintenance configuration; In the working configuration, mineral material that has passed through the pre-screen (140, 141, 150) is guided (603) by the bypass chute (160) to bypass the crusher (170); In the lowered maintenance configuration, a working platform (604) is provided below the pre-screens (140, 141, 150) via the bypass chute (160).

15. A mobile mineral material processing device, the mobile mineral material processing device comprising the system according to any one of claims 1 to 13.

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