AU2019201543A1 - Safety pull cord for a conveyor - Google Patents
Safety pull cord for a conveyor Download PDFInfo
- Publication number
- AU2019201543A1 AU2019201543A1 AU2019201543A AU2019201543A AU2019201543A1 AU 2019201543 A1 AU2019201543 A1 AU 2019201543A1 AU 2019201543 A AU2019201543 A AU 2019201543A AU 2019201543 A AU2019201543 A AU 2019201543A AU 2019201543 A1 AU2019201543 A1 AU 2019201543A1
- Authority
- AU
- Australia
- Prior art keywords
- spool
- cord
- conveyor
- conveyor train
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000005065 mining Methods 0.000 description 20
- 230000000981 bystander Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000032258 transport Effects 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
- B65G15/26—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units extensible, e.g. telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/10—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively movable parts; Devices for moving framework or parts thereof
- B65G21/14—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively movable parts; Devices for moving framework or parts thereof to allow adjustment of length or configuration of load-carrier or traction element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/04—Loading land vehicles
- B65G67/10—Loading land vehicles using conveyors covering the whole length of vehicle trains
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/02—Transport of mined mineral in galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
- H01H3/0226—Emergency operating parts, e.g. for stop-switch in dangerous conditions operated by a pull cord
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Aviation & Aerospace Engineering (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Control Of Conveyors (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Escalators And Moving Walkways (AREA)
- Ropes Or Cables (AREA)
Abstract
A conveyor system includes a flexible conveyor train configured to move along a path, a controller, and a safety actuator supported on the conveyor train. The conveyor train includes a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving the continuous belt. The controller is in communication with the motor to control operation of the conveyor train. The safety actuator includes a retractor, a trip switch electrically coupled to the controller, and a cord having a first end and a second end. The first end is coupled to the retractor, and the second end is coupled to the trip switch. 11151461_1 (GHMatters) P110822.AU
Description
A conveyor system includes a flexible conveyor train configured to move along a path, a controller, and a safety actuator supported on the conveyor train. The conveyor train includes a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving the continuous belt. The controller is in communication with the motor to control operation of the conveyor train. The safety actuator includes a retractor, a trip switch electrically coupled to the controller, and a cord having a first end and a second end. The first end is coupled to the retractor, and the second end is coupled to the trip switch.
11151461_1 (GHMatters) P110822.AU
2/5
2019201543 06 Mar 2019
FIG. IB
2019201543 06 Mar 2019
SAFETY PULL CORD FOR A CONVEYOR
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to co-pending, prior-filed U.S. Provisional Patent Application No. 62/639,000, filed March 6, 2018, the entire contents of which are incorporated by reference herein.
BACKGROUND [0002] The present application relates to conveyor systems, and more particularly to a safety pull cord for a conveyor.
[0003] Mining conveyors facilitate the movement of a mined material. In order to comply with many global regulations, conveyors are required to have a safety pull cord that can be operated to shut down the conveyor in case of an emergency. However, some conveyors are flexible and move throughout a mining cycle causing conventional pull cords to accidentally shut down the conveyor. In addition, conventional pull cords provide a large amount of slack requiring a user to pull a significant amount before the conveyor shuts down.
SUMMARY [0004] In one embodiment, a conveyor system includes a flexible conveyor train configured to move along a path, a controller, and a safety actuator supported on the conveyor train. The conveyor train includes a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving the continuous belt. The controller is in communication with the motor to control operation of the conveyor train. The safety actuator includes a retractor, a trip switch electrically coupled to the controller, and a cord having a first end and a second end. The first end is coupled to the retractor, and the second end is coupled to the trip switch.
[0005] In another embodiment, a conveyor system includes a conveyor train movable upon a support surface, a controller, and a safety actuator. The conveyor train includes a plurality of movable segments coupled to one another in series, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 the continuous belt. The controller is supported by the conveyor train and operable to control operation of the conveyor train. The safety actuator is supported on the conveyor train and includes a cord, a spool for receiving the cord, and a clutch. While a rotational speed of the spool exceeds a predetermined level, the clutch causes a pawl to engage the spool and inhibit rotation of the spool, thereby causing the controller to stop operation of the conveyor train.
[0006] In yet another embodiment, a conveyor system includes a flexible conveyor train configured for movement along an underground path, a trip switch, and a cord. The conveyor train includes a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor. The trip switch is selectively operable in a first mode in which operation of the motor is permitted and a second mode in which operation of the motor is inhibited. The cord is partially wrapped onto a spool and coupled to the trip switch. The spool is biased to wrap the cord onto the spool, and application of a force on the pull cord is operable to change the trip switch from the first mode to the second mode.
[0007] Other aspects will become apparent by consideration of the detailed description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS [0008] FIG. 1A illustrates an overview of a mining roadway and mining operation.
[0009] FIG. IB is a perspective view of a conveyor.
[0010] FIG. 2 is a front elevation view of a safety actuator.
[0011] FIG. 3 A is a side view of a retractor of the safety actuator of FIG. 2 in a free position.
[0012] FIG. 3B is a side view of the retractor in a locked position.
[0013] FIG. 4A is a perspective view of the retractor in a free position, with a clutch and cam member removed.
[0014] FIG. 4B is a perspective view of the retractor in a locked position, with a clutch and cam member removed.
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 [0015] Before any embodiments are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Use of including and “comprising” and variations thereof as used herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Use of “consisting of’ and variations thereof as used herein is meant to encompass only the items listed thereafter and equivalents thereof. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings.
[0016] In addition, it should be understood that embodiments may include hardware, software, and electronic components or modules that, for purposes of discussion, may be illustrated and described as if the majority of the components were implemented solely in hardware. However, one of ordinary skill in the art, and based on a reading of this detailed description, would recognize that, in at least one embodiment, aspects may be implemented in software (for example, stored on non-transitory computer-readable medium) executable by one or more processing units, such as a microprocessor, an application specific integrated circuits (“ASICs”), or another electronic device. As such, it should be noted that a plurality of hardware and software based devices, as well as a plurality of different structural components may be utilized to implement the invention. For example, “controllers” described in the specification may include one or more electronic processors or processing units, one or more computer-readable medium modules, one or more input/output interfaces, and various connections (for example, a system bus) connecting the components.
DETAILED DESCRIPTION [0017] Underground roadway development equipment typically includes a continuous miner and haulage equipment that transports cut material from a cutting face. As shown in FIG. 1A, a mining machine (e.g., a continuous miner 10) can be operated to create a roadway. The mining machine 10, as shown in FIGS. 1A and IB, performs a cutting operation that
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 includes cutting material from the cutting face and directing the cut material onto a conveyor (e.g., a flexible conveyor train or FCT) 14 to transfer the cut material to other material handling equipment (e.g., a crusher and/or feeder breaker). In the illustrated embodiment, an operator controls both the mining machine 10 and the flexible conveyor train 14 using a remote control. In other embodiments, an operator may control the mining machine 10 and the flexible conveyor train 14 from a deck on the flexible conveyor train 14.
[0018] In the illustrated embodiment, the conveyor 14 is a flexible conveyor train. The flexible conveyor train 14 follows the mining machine 10 to collect and transport mined material. As such, the flexible conveyor train 14 is capable of moving forward and backward along the underground roadway and is capable of turning. The flexible conveyor train 14 employs a plurality of segments or cars 18 coupled to one another in series. In the illustrated embodiment, the cars 18 are coupled by universal joints to allow the flexible conveyor train 14 to flex in lateral and vertical directions. The flexible conveyor train 14 includes a flexible continuous conveyor belt 22 that wraps around rollers on the cars 18 to transport mined material from the mining machine 10 to the other material handling equipment. In some embodiments, each of the cars 18 of the flexible conveyor train 14 includes a controller 26 (FIG. 1 A) and a safety pull cord 30. The controllers 26 control the operation of the carts 18 and can communicate with one another and with a controller on the mining machine 10.
[0019] The flexible conveyor train 14 includes a plurality of safety actuators or pull cords 30; as mentioned above, in the illustrated embodiment each car 18 of the flexible conveyor train 14 includes a safety actuator or pull cord 30. With reference to FIG. 2, each safety actuator 30 includes a first end 34, a second end 38 opposite the first end 34, and a cord 42 extending between the first and second ends 34, 38. The first end 34 is fixed to the flexible conveyor train 14 at a position near the back of a respective car 18 (e.g., by screws, bolts, adhesives, etc.). The second end 38 is fixed to the flexible conveyor train 14 at a position adjacent a controller 26 of another respective car 18 (e.g., by screws, bolts, adhesives, etc.).
[0020] With reference to FIGS. 3A and 3B, the first end 34 of the safety pull cord 30 includes a retractor 46 positioned in a housing 50. The retractor 46 includes a spool 54, a resilient member (not shown), a centrifugal clutch 62, a cam member 66, and a pawl 70. The spool 54 is rotatably coupled to the inside of the housing 50 and includes a ratchet portion
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 including teeth 74 positioned along an outer periphery. A first end 78 (FIG. 2) of the cord 42 is coupled to the spool 54 and slack from the cord 42 is wound about the spool 54. The resilient member biases the spool 54 to rotate in a first direction (e.g., counter-clockwise as seen in FIG. 3) to wind up any slack of the cord 42. The centrifugal clutch 62 is pivotally coupled to the spool 54 adjacent the ratchet teeth 74. For example, in the illustrated embodiment, the clutch 62 is pivotably coupled to the spool 54 about a pin 76, and is biased toward a retracted or radially inward position by a spring 80. The cam member 66 is supported adjacent the spool 54. The cam member 66 is coupled to the pawl 70 by a sliding pin 82 that slides within an aperture 86 on the pawl 70.
[0021] The retractor mechanism 46 acts to wind slack from the cord 42 around the spool 54. Slack from the cord 42 may be unwound or paid out from the retractor mechanism 46 when the spool 54 rotates in a second direction (e.g., clockwise as shown in FIGS. 3A and 3B) against the bias of the resilient member. Releasing the cord 42 allows the resilient member to act on the spool 54 rotating it in the first direction to wind up the slack of the cord 42 (FIG. 4A). However, if slack from the cord 42 is paid out rapidly, the spool 54 will increase its rotational speed. The increased rotational speed increases the rotational force on the spool 54 and causes the centrifugal clutch 62 to pivot driving an end 90 of the centrifugal clutch 62 radially outward away from the spool 54. The end 90 of the centrifugal clutch 62 engages and pushes the cam member 66 (e.g., upwardly as shown in FIG. 3B), moving the sliding pin 82 along the aperture 86. The movement of the sliding pin 82 pulls the pawl 70 into the path of the spinning ratchet teeth 74 of the spool 54 as shown in FIGS. 3B and 4B, inhibiting rotation of the spool 54 in the second direction and inhibiting payout of the cord 42. As such, the retractor mechanism 46 is operable in a first mode in which the spool 54 is allowed to pay out slack from the cord 42, and operable in a second mode in which the spool 54 is prevented from paying out slack from the cord 42.
[0022] Referring again to FIG. 2, the second end 38 of the safety actuator 30 includes a trip switch 94. The trip switch 94 includes a conductor 98 that is electrically coupled to the controller 26 of the car 18 of the flexible conveyor train 14 on which the corresponding safety pull cord 30 is positioned. The trip switch 94 is operable in a first mode in which the trip switch 94 communicates with the controller 26 to operate the flexible conveyor train 14, and
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 in a second mode in which the trip switch 94 communicates with the controller 26 to stop operation of the flexible conveyor train 14.
[0023] The trip switch 94 further includes a latch 102, an emergency stop button 106, and a reset button 110. The latch 102 is coupled to a second end 114 of the cord 42 and is moveable between a first position and a second position. While the latch 102 is in the first position, the trip switch 94 is in the first mode to communicate with the controller 26 to operate the flexible conveyor train 14. While the latch 102 is in the second position, the trip switch 94 is in the second mode to communicate with the controller 26 to stop the motors running the flexible conveyor train 14. The emergency stop button 106 may be depressed to stop the motors of the flexible conveyor train 14 and the mining machine 10.
[0024] In an emergency, the flexible conveyor train 14 and the mining machine 10 may be stopped by either actuating the emergency stop button 106 or moving the latch 102 to the second position (e.g., by pulling the cord 42). In order to resume operation of the mining machine 10 and flexible conveyor train 14, the latch 102 must be returned to the first position and/or the emergency stop button 106 must be returned to a non-depressed position and the reset button 110 must be actuated.
[0025] With reference to FIG. 2, in some embodiments the cord 42 is a poly-coated twisted/braided cord; the cord 42 can be made from a rope material covered in a polymer resin. The cord 42 may include clips/hooks 118 at both the first and second ends 78, 114 to attach to the trip switch 94 and/or the spool 54. Eyelets 122 may be coupled to the flexible conveyor train 14 between the first and second ends 34, 38 of the safety pull cord 30 for the cord 42 to slide through and be supported.
[0026] During operation of the mining equipment, the flexible conveyor train 14 follows the mining machine 10 along the underground roadway. As the flexible conveyor train 14 moves, it traverses turns and rough terrain that requires it to flex and curve to maneuver around the underground passages. The maneuvering of the flexible conveyor train 14 will require more slack from the cord 42 in order to avoid an unintentional shut off of the mining equipment. As described above, as slack is needed (for example, when the flexible conveyor train 14 is turning), the spool 54 will rotate to pay out the cord 42 from the retractor
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 mechanism 46. Then, after the flexible conveyor train 14 has completed the turn, the slack is no longer needed and the resilient member rotates the spool 54 in an opposite direction to wind the cord 42 onto the spool 54. While the flexible conveyor train 14 flexes or adjusts for length, the cord 42 of the safety pull cord 30 is allowed to extend and retract as needed without activating the trip switch 94. It should be noted that normal movement of the flexible conveyor train 14 is not sufficient to pull the cord 42 to lock the spool 54 and activate the trip switch 94.
[0027] If, however, during operation of the mining equipment an emergency were to occur requiring a quick shut off of the flexible conveyor train 14, an operator or a bystander may pull the cord 42 sharply to shut the flexible conveyor train 14 down. For example, if a bystander positioned near the flexible conveyor train 14 were to get their hand stuck in the flexible conveyor train 14 or the continuous conveyor belt 22, the bystander could pull the cord 42. As described above, pulling the cord 42 sharply applies an increased centrifugal force to the spool 54 that causes the end 90 of the centrifugal clutch 62 to pivot. The centrifugal clutch 62 pushes the cam member 66 moving the pawl 70 into contact with the ratchet teeth 74, thereby stopping the rotation of the spool 54. The stopping of the spool 54 discontinues payout of the cord 42 and allows the second end 114 of the cord 42 to move the latch 102 of the trip switch 94 from the first position to the second position, shutting off the motors of the mining machine 10 and the flexible conveyor train 14. Once the emergency condition is cleared, the latch 102 of the trip switch 94 can be moved back to the first position and the reset button 110 pressed to continue operation of the flexible conveyor train 14 and the mining machine 10.
[0028] Providing a flexible conveyor train 14 with a safety pull cord 30 including a centrifugal clutch 62 and a spool 54 advantageously allows the flexible conveyor train 14 to adhere to safety regulations while still permitting movement without activating a trip switch 94. The safety pull cord 30 can be pulled by an operator in an emergency to shut down the flexible conveyor train 14. In addition, providing a conveyor 14 with a safety pull cord 30 with a centrifugal clutch 62 and spool 54 manages the cord 42 to avoiding the excessive slack. Reducing slack allows a bystander or an operator to effectively pull the cord 42 to deactivate the conveyor 14 when needed.
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019 [0029] Although various aspects have been described in detail with reference to certain embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects as described. Various features and advantages are set forth in the following claims.
[0030] It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other country.
[0031] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.
11151461_1 (GHMatters) P110822.AU
2019201543 06 Mar 2019
Claims (17)
- What is claimed is:1. A conveyor system comprising:a flexible conveyor train configured to move along a path, the conveyor train including a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving the continuous belt;a controller in communication with the motor to control operation of the conveyor train; and a safety actuator supported on the conveyor train, the safety actuator including a retractor, a trip switch electrically coupled to the controller, and a cord having a first end and a second end, the first end coupled to the retractor, the second end coupled to the trip switch.
- 2. The conveyor system of claim 1, wherein the trip switch is selectively operable in a first trip mode and a second trip mode, while the trip switch is in the first trip mode the controller operates the flexible conveyor train, while the trip switch is in the second trip mode, the controller interrupts operation of the flexible conveyor train.
- 3. The conveyor system of claim 2, wherein the retractor is selectively operable in a first retractor mode and a second retractor mode, while the retractor is in the first retractor mode the retractor permits the cord to be paid out, while the retractor is in the second retractor mode the retractor inhibits the cord from being paid out.
- 4. The conveyor system of claim 3, wherein the trip switch further includes a latch movable between a first position and a second position, wherein while the latch is in the first position, the trip switch is operable in the first trip mode, and while the latch is in the second position, the trip switch is operable in the second trip mode, wherein while the retractor is in the second mode the latch is movable from the first position to the second position.
- 5. The conveyor system of claim 2, wherein applying a predetermined force on the cord shifts the trip switch from the first trip mode to the second trip mode.
- 6. The conveyor system of claim 1, wherein the retractor includes a spool and a centrifugal clutch, at least a portion of the cord wrapped onto the spool, wherein when a11151461_1 (GHMatters) P110822.AU2019201543 06 Mar 2019 rotational speed of the spool exceeds a predetermined level, the centrifugal clutch extends radially outwardly to cause a pawl to engage the spool and inhibit rotation of the spool.
- 7. A conveyor system comprising:a conveyor train movable upon a support surface, the conveyor train including a plurality of movable segments coupled to one another in series, a continuous belt for transporting material along a length of the conveyor train, and at least one motor for driving the continuous belt;a controller supported by the conveyor train and operable to control operation of the conveyor train; and a safety actuator supported on the conveyor train, the safety actuator including a cord, a spool for receiving the cord, and a clutch, while a rotational speed of the spool exceeds a predetermined level, the clutch causes a pawl to engage the spool and inhibit rotation of the spool, thereby causing the controller to stop operation of the conveyor train.
- 8. The conveyor system of claim 7, wherein application of a force on the cord while rotation of the spool is inhibited causes the controller to stop operation of the flexible conveyor train.
- 9. The conveyor system of claim 7, wherein the controller is one of a plurality of controllers, each of the controllers supported on an associated one of the movable segments, wherein the safety actuator is one of a plurality of safety actuators, each of the safety actuators supported on an associated one of the movable segments.
- 10. The conveyor system of claim 7, wherein the safety actuator further includes a resilient member biasing the spool in a direction to wind the cord onto an outer surface of the spool.
- 11. The conveyor system of claim 7, wherein the clutch is a centrifugal clutch, while the rotational speed of the spool exceeds the predetermined level, the centrifugal clutch extends to cause a pawl to engage a ratchet surface.11151461_1 (GHMatters) P110822.AU2019201543 06 Mar 2019
- 12. The conveyor system of claim 7, further comprising a trip switch coupled to an end of the cord, wherein actuation of the trip switch causes the controller to stop operation of the conveyor train.
- 13. A conveyor system comprising:a flexible conveyor train configured for movement along an underground path, the conveyor train including a first end, a second end, a continuous belt for transporting material along a length of the conveyor train, and at least one motor;a trip switch selectively operable in a first mode in which operation of the motor is permitted and a second mode in which operation of the motor is inhibited; and a cord partially wrapped onto a spool and coupled to the trip switch, the spool biased to wrap the cord onto the spool, application of a force on the pull cord operable to change the trip switch from the first mode to the second mode.
- 14. The conveyor system of claim 13, wherein the flexible conveyor train includes a plurality of movable segments coupled together in series, wherein the trip switch is one of a plurality of trip switches, each of the trip switches positioned on an associated one of the movable segments.
- 15. The conveyor system of claim 13, wherein application of the force on the cord causes rotation of the spool, further comprising a clutch for stopping and locking the spool against rotation when the rotational speed of the spool exceeds a predetermined level.
- 16. The conveyor system of claim 15, wherein the clutch is a centrifugal clutch, wherein rotation of the spool causes the clutch to extend radially outwardly, while the rotational speed of the spool exceeds the predetermined level, the centrifugal clutch causes a pawl to engage a ratchet surface.
- 17. The conveyor system of claim 13, further comprising a controller electrically coupled between the motor and the trip switch, actuation of the trip switch causing the controller to inhibit operation of the motor.11151461_1 (GHMatters) P110822.AU1/52019201543 06 Mar 20192019201543 06 Mar 20192019201543 06 Mar 20192019201543 06 Mar 2019
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862639000P | 2018-03-06 | 2018-03-06 | |
US62/639,000 | 2018-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2019201543A1 true AU2019201543A1 (en) | 2019-09-26 |
Family
ID=66379646
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2019201543A Abandoned AU2019201543A1 (en) | 2018-03-06 | 2019-03-06 | Safety pull cord for a conveyor |
AU2019231680A Pending AU2019231680A1 (en) | 2018-03-06 | 2019-03-06 | Safety pull cord for a conveyor |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2019231680A Pending AU2019231680A1 (en) | 2018-03-06 | 2019-03-06 | Safety pull cord for a conveyor |
Country Status (6)
Country | Link |
---|---|
AU (2) | AU2019201543A1 (en) |
CA (2) | CA3093410A1 (en) |
GB (2) | GB2586730B (en) |
RU (2) | RU2769319C1 (en) |
WO (1) | WO2019173502A1 (en) |
ZA (2) | ZA201901396B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113460615B (en) * | 2021-07-06 | 2022-11-04 | 安徽溢彩玻璃器皿有限公司 | Safety shutdown device for glass production belt conveyor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2843707A (en) * | 1955-05-03 | 1958-07-15 | Jab Company Inc | Electrical safety switch |
US3531610A (en) * | 1967-10-30 | 1970-09-29 | Band B Co | Pull cord type conveyor belt control switch |
US3760910A (en) * | 1972-04-14 | 1973-09-25 | A Koshihara | Safety device |
GB2078447A (en) * | 1980-06-18 | 1982-01-06 | Huwood Ardee Ltd | Conveyor systems |
FI108632B (en) * | 1999-08-27 | 2002-02-28 | Bmh Wood Technology Oy | Bump conveyor for moving bulk material |
US7022930B2 (en) * | 2003-12-04 | 2006-04-04 | Honeywell International Inc. | Single directional cable actuated emergency stop device |
CN201072760Y (en) * | 2007-06-18 | 2008-06-11 | 无锡尚德太阳能电力有限公司 | Intelligent solar cell photovoltaic component |
US20160186566A1 (en) * | 2013-08-12 | 2016-06-30 | Fred STANFORD | Apparatus, system and method for material extraction in underground hard rock mining |
DE102015111071A1 (en) * | 2015-07-08 | 2017-01-12 | Vossloh Kiepe Gmbh | Switching device with a ripcord |
US9824841B2 (en) * | 2015-11-17 | 2017-11-21 | Rockwell Automation Technologies, Inc. | Safety switch and associated methods |
-
2019
- 2019-03-06 RU RU2020132611A patent/RU2769319C1/en active
- 2019-03-06 AU AU2019201543A patent/AU2019201543A1/en not_active Abandoned
- 2019-03-06 RU RU2019106293A patent/RU2019106293A/en not_active Application Discontinuation
- 2019-03-06 GB GB2015636.0A patent/GB2586730B/en active Active
- 2019-03-06 GB GB1902982.6A patent/GB2573614B/en active Active
- 2019-03-06 CA CA3093410A patent/CA3093410A1/en active Pending
- 2019-03-06 CA CA3035866A patent/CA3035866A1/en active Pending
- 2019-03-06 WO PCT/US2019/020997 patent/WO2019173502A1/en active Application Filing
- 2019-03-06 ZA ZA2019/01396A patent/ZA201901396B/en unknown
- 2019-03-06 AU AU2019231680A patent/AU2019231680A1/en active Pending
-
2020
- 2020-09-28 ZA ZA2020/05983A patent/ZA202005983B/en unknown
Also Published As
Publication number | Publication date |
---|---|
RU2769319C1 (en) | 2022-03-30 |
GB2586730B (en) | 2022-06-15 |
GB201902982D0 (en) | 2019-04-17 |
GB2586730A (en) | 2021-03-03 |
WO2019173502A1 (en) | 2019-09-12 |
GB2573614B (en) | 2022-06-15 |
CA3093410A1 (en) | 2019-09-12 |
RU2019106293A (en) | 2020-09-07 |
ZA201901396B (en) | 2020-01-29 |
GB2573614A (en) | 2019-11-13 |
AU2019231680A1 (en) | 2020-10-22 |
GB202015636D0 (en) | 2020-11-18 |
ZA202005983B (en) | 2021-08-25 |
CA3035866A1 (en) | 2019-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6685251B2 (en) | Retractable cover system for open top end containers | |
US20140033992A1 (en) | Animal collar and retracting dog lead | |
ITBO20110504A1 (en) | TOWING DEVICE FOR A BICYCLE FOR DISABLED ON INCLINED PLANS. | |
AU2019201543A1 (en) | Safety pull cord for a conveyor | |
US7384023B2 (en) | Capstan anti-reversing pawl | |
EP0908582B1 (en) | Brake mechanism of wire reel for reinforcing bar binding machine | |
EP3042875B1 (en) | Winch for forestry, agricultural and the like machines | |
KR20010113468A (en) | Strapping machine with twisted belt drive | |
US6073916A (en) | Powered cable feeding system | |
CN110944898B (en) | Locomotive parking brake | |
EP1149435B1 (en) | Snatch disconnection lanyard | |
US2706614A (en) | Puller | |
CN211870200U (en) | Tensioner | |
CN111022579B (en) | Connector convenient for clamping and connecting for wharf cable | |
SE514768C2 (en) | Parking brake device, adjustable automatically, or with servo support, or muscle power | |
WO2020000088A1 (en) | Locking strap system and method | |
US2165507A (en) | Tractor-trailer dumping vehicle | |
KR101138040B1 (en) | Operating lever device for power carrier | |
KR20140006403U (en) | Capstan winch system having ratchet gear | |
JP2820651B2 (en) | Cableway carrier | |
US2410592A (en) | Emergency braking apparatus | |
US2956779A (en) | Power-scoop pulling mechanism | |
US20200001769A1 (en) | Locking strap system and method | |
KR100768302B1 (en) | Cutter prevetion apparatus of trailer cable | |
JP2000007288A (en) | Cable delivery apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |