CA3001605C - Skip dump system - Google Patents
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- CA3001605C CA3001605C CA3001605A CA3001605A CA3001605C CA 3001605 C CA3001605 C CA 3001605C CA 3001605 A CA3001605 A CA 3001605A CA 3001605 A CA3001605 A CA 3001605A CA 3001605 C CA3001605 C CA 3001605C
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 ore Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A system for emptying a skip, the system having a skip body with a discharge opening; a skip door disposed across the discharge opening; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism having a tipping frame for engaging the engagement portion, a gearbox assembly for actuating the tipping frame, a plurality of crank links and a plurality of crank arms. A skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism having a tipping frame for engaging an engagement portion of a skip door, a gearbox assembly for actuating the tipping frame; a plurality of crank links and a plurality of crank arms.
Description
Docket No. 5434-00396 SKIP DUMP SYSTEM
Inventor: Francois Koekemoer FIELD OF THE INVENTION
The present invention relates to a skip for transporting materials in and from mines in the shaft mining industry. In particular, although not exclusively, the invention relates to a system for emptying or dumping material from the skip.
BACKGROUND OF THE INVENTION
In the mining, quarrying and minerals processing industries, skips are used to vertically hoist materials, such as ore, coal, minerals, from the bottom of a mine shaft or pit to the top of the mine shaft or pit, or vice versa, and to thereafter discharge the material into e.g. a hopper, truck or the like. Systems for discharging materials from the skip by opening a skip door are known. Examples of skips, and systems for opening skip doors, may be appreciated from U.S. Patent Nos. 2,828,041, 2,995,264 and 3,061,128.
Skip doors were traditionally opened using fixed scrolls. Later, systems for opening skip doors were developed which implemented hydraulic systems, e.g. hydraulic cylinders, to open the skip doors. However, hydraulic systems for opening skip doors pose numerous issues. First, hydraulic systems convert electrical energy via hydraulics into linear motion resulting in high acceleration forces and complex speed control requirments.
Such systems are complex and expensive ¨ e.g. requiring a large oil reservoir, multiple control valves (e.g.
high flow proportional valves), accumulators (e.g. bladder accumulators) and coolers, as well as software programming and other associated hydraulic equipment. Second, hydraulic systems require fire suppression methods which are undesirable and also expensive. Third, hydraulic systems require frequent maintenance - e.g. typical mining envorinments are dusty which results in valve failure or the need for frequent valve replacement.
OBJECT OF THE INVENTION
It is an object of the invention to overcome or at least alleviate one or more of the above problems and/or provide the consumer with a useful or commercial choice.
SUMMARY OF THE INVENTION
A system for emptying or dumping material from a skip is provided. The system having a skip body with a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism having: a tipping frame for engaging the engagement portion, the tipping frame having a first tipping frame leg, a second tipping frame leg and a linking portion there between for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
In an exemplary embodiment of the system, a top portion of the first tipping frame leg and a top portion of the second tipping frame leg have a connection device for connecting
Inventor: Francois Koekemoer FIELD OF THE INVENTION
The present invention relates to a skip for transporting materials in and from mines in the shaft mining industry. In particular, although not exclusively, the invention relates to a system for emptying or dumping material from the skip.
BACKGROUND OF THE INVENTION
In the mining, quarrying and minerals processing industries, skips are used to vertically hoist materials, such as ore, coal, minerals, from the bottom of a mine shaft or pit to the top of the mine shaft or pit, or vice versa, and to thereafter discharge the material into e.g. a hopper, truck or the like. Systems for discharging materials from the skip by opening a skip door are known. Examples of skips, and systems for opening skip doors, may be appreciated from U.S. Patent Nos. 2,828,041, 2,995,264 and 3,061,128.
Skip doors were traditionally opened using fixed scrolls. Later, systems for opening skip doors were developed which implemented hydraulic systems, e.g. hydraulic cylinders, to open the skip doors. However, hydraulic systems for opening skip doors pose numerous issues. First, hydraulic systems convert electrical energy via hydraulics into linear motion resulting in high acceleration forces and complex speed control requirments.
Such systems are complex and expensive ¨ e.g. requiring a large oil reservoir, multiple control valves (e.g.
high flow proportional valves), accumulators (e.g. bladder accumulators) and coolers, as well as software programming and other associated hydraulic equipment. Second, hydraulic systems require fire suppression methods which are undesirable and also expensive. Third, hydraulic systems require frequent maintenance - e.g. typical mining envorinments are dusty which results in valve failure or the need for frequent valve replacement.
OBJECT OF THE INVENTION
It is an object of the invention to overcome or at least alleviate one or more of the above problems and/or provide the consumer with a useful or commercial choice.
SUMMARY OF THE INVENTION
A system for emptying or dumping material from a skip is provided. The system having a skip body with a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism having: a tipping frame for engaging the engagement portion, the tipping frame having a first tipping frame leg, a second tipping frame leg and a linking portion there between for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
In an exemplary embodiment of the system, a top portion of the first tipping frame leg and a top portion of the second tipping frame leg have a connection device for connecting
2 the tipping frame to structural steelwork. In some embodiments, the connection device may have a pivot bracket and a hinge.
In an exemplary embodiment of the system, the engagement portion has dump rollers, wherein the first tipping frame leg and second tipping frame leg have receiving tracks for engaging the dump rollers.
In an exemplary embodiment of the system, the system can also have shaft guides for vertically moving the skip body.
In an exemplary embodiment of the system, the gearbox assembly has a helical bevel geared motor assembly; a motor unit; a thru shaft disposed in and through the helical bevel geared motor assembly; and outboard support bearings disposed on respective terminal ends of the thru shaft; wherein the first crank arm longitudinal ends are connected to the outboard support bearings. In some embodiments, the gearbox assembly is mounted on or to a base support, wherein the base support is configured to be connected to structural steelwork. In some embodiments, the gearbox assembly is configured to actuate the tipping frame without the use of hydraulics.
Also provided is a skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism having: a tipping frame for engaging an engagement portion of a skip door, the tipping frame having a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping .. frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a
In an exemplary embodiment of the system, the engagement portion has dump rollers, wherein the first tipping frame leg and second tipping frame leg have receiving tracks for engaging the dump rollers.
In an exemplary embodiment of the system, the system can also have shaft guides for vertically moving the skip body.
In an exemplary embodiment of the system, the gearbox assembly has a helical bevel geared motor assembly; a motor unit; a thru shaft disposed in and through the helical bevel geared motor assembly; and outboard support bearings disposed on respective terminal ends of the thru shaft; wherein the first crank arm longitudinal ends are connected to the outboard support bearings. In some embodiments, the gearbox assembly is mounted on or to a base support, wherein the base support is configured to be connected to structural steelwork. In some embodiments, the gearbox assembly is configured to actuate the tipping frame without the use of hydraulics.
Also provided is a skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism having: a tipping frame for engaging an engagement portion of a skip door, the tipping frame having a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping .. frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a
3 plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
In an exemplary embodiment of the skip dump door operating mechanism, the .. engagement portion has dump rollers, wherein the first tipping frame leg and second tipping frame leg have receiving tracks for engaging the dump rollers.
In an exemplary embodiment of the skip dump door operating mechanism, the gearbox assembly has: a helical bevel geared motor assembly; a motor unit; a thru shaft disposed in and through the helical bevel geared motor assembly; and outboard support bearings disposed on respective terminal ends of the thru shaft; wherein the first crank arm longitudinal ends are connected to the outboard support bearings. In some embodiments, the gearbox assembly is mounted on or to a base support and the base support is configured to be connected to structural steelwork. In some embodiments, the gearbox assembly is configured to actuate the tipping frame without the use of hydraulics.
In an exemplary embodiment of the skip dump door operating mechanism, a top portion of the first tipping frame leg and a top portion of the second tipping frame leg have a connection device for connecting the tipping frame to structural steelwork (60). In some embodiments, the connection device has a pivot bracket and a hinge.
According to one embodiment of the present invention, there is provided a system for emptying or dumping material from a skip comprising: a skip body having a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging
In an exemplary embodiment of the skip dump door operating mechanism, the .. engagement portion has dump rollers, wherein the first tipping frame leg and second tipping frame leg have receiving tracks for engaging the dump rollers.
In an exemplary embodiment of the skip dump door operating mechanism, the gearbox assembly has: a helical bevel geared motor assembly; a motor unit; a thru shaft disposed in and through the helical bevel geared motor assembly; and outboard support bearings disposed on respective terminal ends of the thru shaft; wherein the first crank arm longitudinal ends are connected to the outboard support bearings. In some embodiments, the gearbox assembly is mounted on or to a base support and the base support is configured to be connected to structural steelwork. In some embodiments, the gearbox assembly is configured to actuate the tipping frame without the use of hydraulics.
In an exemplary embodiment of the skip dump door operating mechanism, a top portion of the first tipping frame leg and a top portion of the second tipping frame leg have a connection device for connecting the tipping frame to structural steelwork (60). In some embodiments, the connection device has a pivot bracket and a hinge.
According to one embodiment of the present invention, there is provided a system for emptying or dumping material from a skip comprising: a skip body having a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging
4 Date Recue/Date Received 2021-03-05 the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
According to another embodiment of the present invention, there is provided a system for emptying or dumping material from a skip consisting of: a skip body having a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
4a Date Recue/Date Received 2021-03-05 According to a further embodiment of the present invention, there is provided skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging an engagement portion of a skip door, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
Other details, objects, and advantages of the invention will become apparent as the following description of certain present exemplary embodiments thereof and certain present exemplary methods of practicing the same proceeds.
4b Date Recue/Date Received 2021-03-05 BRIEF DESCRIPTION OF THE FIGURES
Embodiments of the invention, by way of example only, will be described with reference to the accompanying drawings in which:
Figure 1 shows a front-side view an exemplary embodiment of the system.
Figure 2 shows a front-side view of an exemplary embodiment of the skip dump door operating mechanism mounted on the structural steel.
Figure 3 shows a front-side view an exemplary embodiment of the system with the skip door closed.
Figure 4 shows a front-side view an exemplary embodiment of the system with the skip door open.
Figure 5 shows a front view of the system with a single drive and dual mine shaft guides.
DETAILED DESCRIPTION OF THE INVENTION
Figures 1-5 show an exemplary embodiment of the system 1 including the skip dump door operating mechanism 20. The skip body 10 can be disposed on mine shaft guides 18 which enable the skip body 10 to move longitudinally. As shown in e.g. Figure
According to another embodiment of the present invention, there is provided a system for emptying or dumping material from a skip consisting of: a skip body having a discharge opening; a skip door disposed across the discharge opening, the skip door having an engagement portion; a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
4a Date Recue/Date Received 2021-03-05 According to a further embodiment of the present invention, there is provided skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism comprising: a tipping frame for engaging an engagement portion of a skip door, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg; a gearbox assembly for actuating the tipping frame; a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
Other details, objects, and advantages of the invention will become apparent as the following description of certain present exemplary embodiments thereof and certain present exemplary methods of practicing the same proceeds.
4b Date Recue/Date Received 2021-03-05 BRIEF DESCRIPTION OF THE FIGURES
Embodiments of the invention, by way of example only, will be described with reference to the accompanying drawings in which:
Figure 1 shows a front-side view an exemplary embodiment of the system.
Figure 2 shows a front-side view of an exemplary embodiment of the skip dump door operating mechanism mounted on the structural steel.
Figure 3 shows a front-side view an exemplary embodiment of the system with the skip door closed.
Figure 4 shows a front-side view an exemplary embodiment of the system with the skip door open.
Figure 5 shows a front view of the system with a single drive and dual mine shaft guides.
DETAILED DESCRIPTION OF THE INVENTION
Figures 1-5 show an exemplary embodiment of the system 1 including the skip dump door operating mechanism 20. The skip body 10 can be disposed on mine shaft guides 18 which enable the skip body 10 to move longitudinally. As shown in e.g. Figure
5, there can be two sets of mine shaft guides 18, with e.g. two skip bodies 10 which can operate in tandem. For example, one skip body 10 can be located at the bottom of the mine shaft guides 18 and another can be located at the top of the mine shaft guides 18.
In embodiments with two sets of mine shaft guides 18 and/or two skip bodies 10, as shown in e.g. Figure 5, there can be a single gearbox assembly 30 for operating two skip dump door mechanisms 20 which are dedicated to each of the mine shafts associated with the mine shaft guides 18. In other embodiments, as shown in e.g. Figure 2, there can be a dual gearbox assembly 30 for operating each of the respective skip dump door mechanisms 20.
As shown in e.g. Figures 1-5, the skip body 10 has a discharge opening 11 at the bottom end of the skip body 10 for discharging material and emptying the skip body 10. A
skip door 12 can be disposed across the discharge opening 11. In some embodiments the skip door 12 is arranged on the skip body 10 such that the skip is a bottom dump skip, but in other embodiments the skip door 12 can be arranged on the skip body 10 such that the skip is e.g. a bottom dump skip or an arc gate skip. A skip dump lip 16 can be disposed adjacent the skip door 12 / discharge opening 11 ¨ the skip dump lip provides a mechanism for material to be deflected as it exits the skip 10 into e.g. a chute. The skip dump door 12 can have an engagement portion 13 for engaging with a skip dump door operating mechanism 20. The engagement portion 13 can be disposed on each side of the skip dump door 12 and can be in the form of e.g. dump roller, nubs, hooks, handles.
Figures 1-5 depict a skip dump door operating mechanism 20 configured to open and close the skip dump door 12. In an exemplary embodiment, the skip dump door operating mechanism 20 has a tipping frame 21, a gearbox assembly 30, crank links 50 and crank arms 40. In an exemplary embodiment, the tipping frame 21 is made of first and second tipping frame legs 22a, 22b which are connected to each other via a linking portion 23. The linking portion 23 provides structural rigidity to the tipping frame 21. As shown, the linking portion 23 can be a series of steel plates with a bore there through but can also be e.g. a single or double rod or beam, a single steel plate, a series of steel plates with or without bores there through. As shown in Figures 1-5 the tipping frame legs 22a, 22b can be provided with receiving tracks 24 disposed on the inner side for engaging the engagement portion 13. The
In embodiments with two sets of mine shaft guides 18 and/or two skip bodies 10, as shown in e.g. Figure 5, there can be a single gearbox assembly 30 for operating two skip dump door mechanisms 20 which are dedicated to each of the mine shafts associated with the mine shaft guides 18. In other embodiments, as shown in e.g. Figure 2, there can be a dual gearbox assembly 30 for operating each of the respective skip dump door mechanisms 20.
As shown in e.g. Figures 1-5, the skip body 10 has a discharge opening 11 at the bottom end of the skip body 10 for discharging material and emptying the skip body 10. A
skip door 12 can be disposed across the discharge opening 11. In some embodiments the skip door 12 is arranged on the skip body 10 such that the skip is a bottom dump skip, but in other embodiments the skip door 12 can be arranged on the skip body 10 such that the skip is e.g. a bottom dump skip or an arc gate skip. A skip dump lip 16 can be disposed adjacent the skip door 12 / discharge opening 11 ¨ the skip dump lip provides a mechanism for material to be deflected as it exits the skip 10 into e.g. a chute. The skip dump door 12 can have an engagement portion 13 for engaging with a skip dump door operating mechanism 20. The engagement portion 13 can be disposed on each side of the skip dump door 12 and can be in the form of e.g. dump roller, nubs, hooks, handles.
Figures 1-5 depict a skip dump door operating mechanism 20 configured to open and close the skip dump door 12. In an exemplary embodiment, the skip dump door operating mechanism 20 has a tipping frame 21, a gearbox assembly 30, crank links 50 and crank arms 40. In an exemplary embodiment, the tipping frame 21 is made of first and second tipping frame legs 22a, 22b which are connected to each other via a linking portion 23. The linking portion 23 provides structural rigidity to the tipping frame 21. As shown, the linking portion 23 can be a series of steel plates with a bore there through but can also be e.g. a single or double rod or beam, a single steel plate, a series of steel plates with or without bores there through. As shown in Figures 1-5 the tipping frame legs 22a, 22b can be provided with receiving tracks 24 disposed on the inner side for engaging the engagement portion 13. The
6 tracks 24 can have e.g. outwardly facing arms disposed on the upper and lower terminal ends between the central portion of the track. The tipping frame legs 22a, 22b have a top portion and a bottom portion. In some embodiments the top portion may have a connection device 28 for connecting the top portion of the tipping frame 21 to structural steel 60, e.g. as shown in Figure 2. The connection device 28 may be a combination of a pivot bracket and hinge but it is also envisioned that other known connection methods be used, e.g.
screwing, welding, bolting. The bottom portion of the tipping frame legs 22a, 22b may be connected to crank links 50 which can be connected to crank arms 40 which are in turn connected to the gearbox assembly 30 via e.g. outboard support bearings 36.
As shown in Figures 1-5, the gearbox assembly 30 can have any combination of a helical bevel geared motor assembly 32, a motor unit 34, a thru shaft 38 disposed in and through the helical bevel geared motor assembly 32 and outboard support bearings 36 disposed on respective terminal ends of the thru shaft 38. The cranks arms 40 are connected to the outboard support bearings 36. In a typical embodiment, the gearbox assembly 30 is .. disposed on a base support 39 and the base support can be connected to structural steelwork 60. The gearbox assembly 30 operates and actuates the tipping frame 21 without the use of hydraulics.
In operation, the helical bevel geared motor assembly 32 via e.g. a motor 34 drives a thru shaft 38 with outboard support bearings 36 having offset crank arms 40 and associated mechanical crank links 50 to open and close the skip door 12 by engaging the tipping frame legs 22a, 22b via e.g. the receiving tracks 24 on the engagement portion 13.
The crank action inherently provides a desirable sinusoidal velocity profile whist having a constant motor input speed. There are numerous advantages to the system 1 and skip dump door
screwing, welding, bolting. The bottom portion of the tipping frame legs 22a, 22b may be connected to crank links 50 which can be connected to crank arms 40 which are in turn connected to the gearbox assembly 30 via e.g. outboard support bearings 36.
As shown in Figures 1-5, the gearbox assembly 30 can have any combination of a helical bevel geared motor assembly 32, a motor unit 34, a thru shaft 38 disposed in and through the helical bevel geared motor assembly 32 and outboard support bearings 36 disposed on respective terminal ends of the thru shaft 38. The cranks arms 40 are connected to the outboard support bearings 36. In a typical embodiment, the gearbox assembly 30 is .. disposed on a base support 39 and the base support can be connected to structural steelwork 60. The gearbox assembly 30 operates and actuates the tipping frame 21 without the use of hydraulics.
In operation, the helical bevel geared motor assembly 32 via e.g. a motor 34 drives a thru shaft 38 with outboard support bearings 36 having offset crank arms 40 and associated mechanical crank links 50 to open and close the skip door 12 by engaging the tipping frame legs 22a, 22b via e.g. the receiving tracks 24 on the engagement portion 13.
The crank action inherently provides a desirable sinusoidal velocity profile whist having a constant motor input speed. There are numerous advantages to the system 1 and skip dump door
7 operating mechanism 20 described herein. For example, the invention: increases the hoisting capacity of the scroll system by 10-15 %; uses standard, off-the-shelf components; lowers maintenance costs and the total cost of ownership; uses less power and creates less heat; is easy to use and maintain; increases safety; can be retrofitted; requires a low capital investment and can be used for all commodities in all production shafts.
It is to be understood that the form of this invention as shown is merely a preferred embodiment. Various changes may be made in the function and arrangement of parts;
equivalent means may be substituted for those illustrated and described; and certain features may be used independently from others without departing from the spirit and scope of the invention as defined in the following claims.
LIST OF COMPONENTS
1 ¨ system 10- skip body 11 ¨ discharge opening 12 ¨ skip door 13 ¨ engagement portion 16¨ skip dump lip 18 -- mine shaft guide 20¨ skip dump door operating mechanism 21 ¨ tipping frame 22a, 22b ¨ tipping frame legs 23 ¨ linking portion 24 ¨ receiving tracks / guides 28 ¨ connection device 29a - pivot bracket 29b - hinge 30¨ gearbox assembly 32 ¨ helical bevel geared motor assembly 34 ¨ motor unit 36¨ outboard support bearings 38¨ thru shaft 39¨ base support ¨ crank arm 35 40a ¨ first crank arm end 40b ¨ second crank arm end
It is to be understood that the form of this invention as shown is merely a preferred embodiment. Various changes may be made in the function and arrangement of parts;
equivalent means may be substituted for those illustrated and described; and certain features may be used independently from others without departing from the spirit and scope of the invention as defined in the following claims.
LIST OF COMPONENTS
1 ¨ system 10- skip body 11 ¨ discharge opening 12 ¨ skip door 13 ¨ engagement portion 16¨ skip dump lip 18 -- mine shaft guide 20¨ skip dump door operating mechanism 21 ¨ tipping frame 22a, 22b ¨ tipping frame legs 23 ¨ linking portion 24 ¨ receiving tracks / guides 28 ¨ connection device 29a - pivot bracket 29b - hinge 30¨ gearbox assembly 32 ¨ helical bevel geared motor assembly 34 ¨ motor unit 36¨ outboard support bearings 38¨ thru shaft 39¨ base support ¨ crank arm 35 40a ¨ first crank arm end 40b ¨ second crank arm end
8 50¨ crank link 50a ¨ first crank link end 50b ¨ second crank link end 60 ¨ structural steelwork
9
Claims (14)
1. A system for emptying or dumping material from a skip comprising:
a skip body having a discharge opening;
a skip door disposed across the discharge opening, the skip door having an engagement portion;
a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for .. connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
a skip body having a discharge opening;
a skip door disposed across the discharge opening, the skip door having an engagement portion;
a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for .. connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
2. The system of claim 1, the engagement portion comprising dump rollers, .. wherein the first tipping frame leg and second tipping frame leg comprise receiving tracks for engaging the dump rollers.
3. The system of claim 1, the gearbox assembly comprising:
a helical bevel geared motor assembly;
a motor unit;
a thru shaft disposed in and through the helical bevel geared motor assembly;
and outboard support bearings disposed on respective terminal ends of the thru shaft;
wherein the first crank arm longitudinal ends are connected to the outboard support bearings.
a helical bevel geared motor assembly;
a motor unit;
a thru shaft disposed in and through the helical bevel geared motor assembly;
and outboard support bearings disposed on respective terminal ends of the thru shaft;
wherein the first crank arm longitudinal ends are connected to the outboard support bearings.
4. The system of claim 1, wherein the gearbox assembly is mounted on or connected to a base support and wherein the base support is configured to be connected to structural steelwork.
5. The system of claim 1, wherein a top portion of the first tipping frame leg and a top portion of the second tipping frame leg comprise a connection device for connecting the tipping frame to structural steelwork.
6. The system of claim 5, the connection device comprising a pivot bracket and a hinge.
7. The system of claim 1, further comprising shaft guides for vertically moving the skip body.
8. A system for emptying or dumping material from a skip consisting of:
a skip body having a discharge opening;
a skip door disposed across the discharge opening, the skip door having an engagement portion;
a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
a skip body having a discharge opening;
a skip door disposed across the discharge opening, the skip door having an engagement portion;
a skip dump door operating mechanism configured to open and close the skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging the engagement portion, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
9.
A skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging an engagement portion of a skip door, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
A skip dump door operating mechanism for opening and closing a skip door, the skip dump door operating mechanism comprising:
a tipping frame for engaging an engagement portion of a skip door, the tipping frame comprising a first tipping frame leg, a second tipping frame leg and a linking portion therebetween for connecting the first tipping frame leg to the second tipping frame leg;
a gearbox assembly for actuating the tipping frame;
a plurality of crank links having first crank link longitudinal ends and second crank link longitudinal ends, the second crank link longitudinal ends connected to a bottom portion of the first tipping frame leg or a bottom portion of the second tipping frame leg; and a plurality of crank arms having first crank arm longitudinal ends and second crank arm longitudinal ends, the first crank arm longitudinal ends connected to the gearbox assembly and the second crank arm longitudinal ends connected to the first crank link longitudinal end.
10. The skip dump door operating mechanism of claim 9, the engagement portion comprising dump rollers, wherein the first tipping frame leg and second tipping frame leg comprise receiving tracks for engaging the dump rollers.
11. The skip dump door operating mechanism of claim 9, the gearbox assembly comprising: a helical bevel geared motor assembly; a motor unit; a thru shaft disposed in and through the helical bevel geared motor assembly; and outboard support bearings disposed on respective terminal ends of the thru shaft; wherein the first crank arm longitudinal ends are connected to the outboard support bearings.
12. The skip dump door operating mechanism of claim 9, wherein the gearbox assembly is mounted on or connected to a base support and wherein the base support is configured to be connected to structural steelwork.
13. The skip dump door operating mechanism of claim 9, wherein a top portion of the first tipping frame leg and a top portion of the second tipping frame leg comprise a connection device for connecting the tipping frame to structural steelwork.
14. The skip dump door operating mechanism of claim 13, the connection device comprising a pivot bracket and a hinge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762486482P | 2017-04-18 | 2017-04-18 | |
| US62/486482 | 2017-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3001605A1 CA3001605A1 (en) | 2018-10-18 |
| CA3001605C true CA3001605C (en) | 2022-02-22 |
Family
ID=63896000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3001605A Active CA3001605C (en) | 2017-04-18 | 2018-04-16 | Skip dump system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA3001605C (en) |
-
2018
- 2018-04-16 CA CA3001605A patent/CA3001605C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA3001605A1 (en) | 2018-10-18 |
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| Date | Code | Title | Description |
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| EEER | Examination request |
Effective date: 20191008 |