A strapping system having a carrying device and method of use

Abstract

Various embodiments of the present disclosure provide a method for encircling a load with a strap drawn from a strap supply. The method includes positioning a strapping system near a first side of the load. The strapping system includes a carrying device configured to move around the load, and a cart configured to support the strap supply. The cart includes a vertically extending guide sized and shaped to receive at least part of the carrying device. The method also includes attaching an end of the strap of the strap supply to the carrying device, and moving the carrying device around a top, bottom, first side, and second side of the load while the carrying device draws strap from the strap supply such that the strap at least partially encircles the load.

Description

A STRAPPING SYSTEM HAVING A CARRYING DEVICE AND METHOD OF USEPRIORITY

[0001] This application claims priority to and the benefit of U.S. Provisional Patent Application No. 63 / 750,760, filed January 28, 2025, the entire contents of which is incorporated herein by reference.FIELD

[0002] The present disclosure relates to a strapping system having a carrying device and a method of using the strapping system to encircle a length of a strap around a load.BACKGROUND

[0003] Goods are often stacked on a pallet for ease of transportation from one location to another. The stack of goods on the pallet is typically unitized before transportation to secure the stack as a single unit, reducing a likelihood of some of the goods falling off the stack during transportation. A variety of securing mechanisms can be used to unitize the stack of goods, including straps, cordage, and belts.

[0004] Manually strapping the stack of goods often requires an operator to feed a length of strap around a vertical perimeter of the stack of goods and the pallet by hand to form a loop. Manually feeding the length of strap around the stack of goods on the pallet can be physically challenging and time consuming. The operator is often required to place the strap over the stack, bend to ground level to feed the strap through a bottom of the pallet, and then move to the other side of the pallet to pick the strap from the ground and form the loop, which poses difficulties for the operator.SUMMARY

[0005] Various embodiments of the present disclosure provide a strapping system having a carrying device, and a method for encircling a load using a strapping system. In some embodiments, the carrying device is configured to independently move around the load. The disclosed devices, systems, and methods reduce cycle time and reduce physical demands on anoperator by assisting the operator in encircling a load with a strap. Further, in some embodiments, the carrying device includes a strap-tensioning assembly and a strap-sealing assembly. The strap-tensioning assembly is configured to position and hold a length of the strap encircled around the load under tension. The strap-sealing assembly is configured to cut the strap from a strap supply and secure an end of the strap to another portion of the strap. In various such embodiments, the disclosed devices, systems, and methods assist the operator in tensioning and sealing the strap around the load.

[0006] In one embodiment, a method for encircling a load with a strap drawn from a strap supply is provided. The load includes a top, a bottom opposite the top and defining a through channel, a first side between the top and the bottom, and a second side opposite the first side and between the top and the bottom. The method includes positioning a strapping system near the first side of the load. The strapping system includes: a carrying device configured to move around the load; and a cart configured to support the strap supply. The cart includes a vertically extending guide sized and shaped to receive at least part of the carrying device. The method also includes attaching an end of the strap of the strap supply to the carrying device; and moving the carrying device around the top, bottom, first side, and second side of the load while the carrying device draws strap from the strap supply such that the strap at least partially encircles the load.

[0007] In another embodiment, a strapping system is provided. The strapping system includes: a carrying device configured to move around a load; and a cart configured to support a strap supply. The cart includes a vertically extending guide sized and shaped to receive at least part of the carrying device. An end of a strap disposed from the strap supply is attached to the carrying device.BRIEF DESCRIPTION OF THE FIGURES

[0008] Figure 1 illustrates a simplified diagram of one example of a strapping system according to the disclosure.

[0009] Figure 2 is a perspective view of the strapping system of Figure 1 near a load.

[0010] Figure 3 is a plan view of the strapping system of Figure 2 near the load of Figure 2 in which a carrying device of the strapping system moves across a vertical side of the load while the carrying device draws strap from a strap supply of the strapping system.

[0011] Figure 4 depicts an example of the carrying device of Figure 3 moving around the load of Figure 2 while the carrying device draws strap from the strap supply to partially encircle the load.

[0012] Figure 5 A depicts a side view of a guide of the strapping system of Figure 2.

[0013] Figure 5B depicts a cross-sectional view taken along line 5B of the guide of Figure 5 A.

[0014] Figure 6 is a simplified diagram of one example of a carrying device of the strapping system of Figure 1.

[0015] Figure 7 is a perspective view of another example of a carrying device.

[0016] Figure 8A is a side view of the carrying device of Figure 7.

[0017] Figure 8B is a front view of the carrying device of Figure 7.DETAILED DESCRIPTION

[0018] While the devices, systems, and methods described herein may be embodied in various forms, the drawings show and the specification describes certain exemplary and non-limiting embodiments. Not all of the components shown in the drawings and described in the specification may be required, and certain implementations may include additional, different, or fewer components. Variations in the arrangement and type of the components; the shapes, sizes, and materials of the components; and the manners of connections of the components may be made without departing from the spirit or scope of the claims. Unless otherwise indicated, any directions referred to in the specification reflect the orientations of the components shown in the corresponding drawings and do not limit the scope of the present disclosure. Further, terms that refer to mounting methods, such as mounted, connected, etc., are not intended to be limited to direct mounting methods but should be interpreted broadly to include indirect and operably mounted, connected, and like mounting methods. This specification is intended to be taken as awhole and interpreted in accordance with the principles of the present disclosure and as understood by one of ordinary skill in the art.

[0019] Various embodiments of the present disclosure provide a strapping system having a carrying device and a method of using a strapping system. The carrying device moves around a load while drawing a strap from a strap supply to partially encircle the load.

[0020] Figure 1 illustrates a simplified diagram of one example of a strapping system 100 according to the disclosure. The strapping system 100 includes a carrying device 110 and a cart 160.

[0021] The carrying device 110 is configured to independently move around a load L. In some embodiments, the carrying device 110 self-navigates around the load L. In some embodiments, the carrying device 110 navigates along a predetermined path or uses a sensor to determine a path around the load L. In some embodiments, the carrying device 110 performs actions such as moving around the load L, navigating obstacles, and adjusting its path based on a travel parameter. In some embodiments, the travel parameter is determined based on input from the sensor.

[0022] The cart 160 includes a frame 162, a guide 164 coupled to a side of the frame 162, a strap supply 166 coupled to the frame 162, and a roller 167 coupled to a top portion of the guide 164. In some embodiments, the roller 167 is a pulley wheel.

[0023] The guide 164 extends vertically and is sized and shaped to receive at least part of the carrying device 110 during operation of the strapping system 100.

[0024] As the carrying device 110 travels around the load L, the carrying device 110 is configured to move along the guide 164 when the guide 164 is positioned next to a side of the load L. The guide 164 guides the carrying device 110 along a vertical side of the load L such that the carrying device 110 travels from a bottom of the load L to a top of the load L. As the carrying device 110 reaches the top of the load L, the carrying device 110 is guided by the guide 164 to be positioned on the top T.

[0025] The strap supply 166 is sized and shaped to dispense a strap. A first end of the strap is free and configured to be coupled to the carrying device 110. A second end of the strap is coupled to the strap supply 166.

[0026] During operation of the strapping system 100, the first end of the strap is coupled to the carrying device 110. The carrying device 110 independently moves around the load L while being coupled to the strap, partially encircling the strap around the load L.

[0027] In some embodiments, the carrying device 110 includes a strap-tensioning assembly 130 configured to engage a length of the strap that has been partially wrapped around the load L. The strap-tensioning assembly 130 positions and holds the strap under tension, preparing it for final securing operations and ensuring that the load L is firmly encircled. In some embodiments, the strap-tensioning 130 holds and positions the first end of the strap in place on the load L once a length of the strap encircles the load L. In certain embodiments, the strap-tensioning assembly includes a rotatable tension wheel having a toothed outer surface, a toothed tension plate adjacent to the tension wheel, a motor, and gearing. The gearing supports the tension wheel and operably connects the motor to the tension wheel such that the motor is operable to rotate the tension wheel. In operation, overlapping upper and lower strap layers are positioned between the tension wheel and the tension plate such that the teeth of the tension wheel engage the upper surface of the upper strap layer and the teeth of the tension plate engage the lower surface of the lower strap layer. The motor is activated to rotate the tension wheel, which pulls the upper strap layer over the lower strap layer, thereby tensioning the strap around the load.

[0028] Further, in some embodiments, the carrying device 110 includes a strap-sealing assembly 140 configured to cut the strap from the strap supply 166 and secure the first end of the strap to another portion of the strap, effectively sealing the strap around the load L. In some embodiments, the strap-sealing assembly 140 attaches both the first end and the newly cut opposite end of the strap directly to a side of the load L. In certain embodiments, the strapsealing assembly includes a friction-welding device operable to melt and join overlapping portions of the strap together via friction welding. In other embodiments, the strap-sealing device includes a heated-blade device operable to melt and join overlapping portions of the strap together. In further embodiments, the strap-sealing device includes an ultrasonic welding device configured to melt and join overlapping portions of the strap together.

[0029] In some embodiments, the carrying device does not include the strap-tensioning assembly 130 and / or the strap-sealing assembly 140. In such embodiments, an operator uses a strapping tool to engage a length of the strap has been partially wrapped around the load L, position and hold the strap under tension, cut the strap from the strap supply 166, and / or secure the first end of the strap to another portion of the strap.

[0030] Figures 2-4 illustrate the strapping system 100 positioned near a load L. As best shown in Figures 2-4, the cart 160 also includes a handle 161, a pair of wheels 163, and a basket 165. The handle 161, the pair of wheels 163, and the basket 165 are each coupled to the frame 162.

[0031] The pair of wheels 163 are coupled to the frame 162 to allow the cart 160 to be positioned and / or moved, next to the load L via the handle 161. In some embodiments, the cart 160 is configured to be positioned next to the load L such the guide 164 is adjacent to a side of the load L. The basket 165 is configured to hold the carrying device 110 when the carrying device 110 is not in operation.

[0032] The roller 167 is positioned on the upper portion 169 of the guide 164. The roller 167 is configured to guide a strap 102, which is supplied by the strap supply 166, over the upper portion 169 of the guide 164. In some embodiments, the roller 167 has a groove that holds the strap 102 in place.

[0033] Further, in some embodiments, the guide 164 extends vertically from a lower portion of the cart 160 to an upper portion. In some embodiments, the guide 164 has an L-shaped configuration, with an upper portion 169 that extends partially over the top T of the load L. The upper portion 169 guides the carrying device 110 over a corner of the load L and onto the top T of the load L. In some embodiments, the guide 164 includes an extendable portion that is extendable beyond a length of the guide 164. As a result, in such embodiments, the guide 164 is configured to adjust to different load sizes.

[0034] Figure 5 A illustrates a side view of a guide 164, and Figure 5B illustrates a cross-sectional view taken along line 5B of the guide 164 of Figure 5 A. Figures 5 A and 5B depict the carrying device 110 traveling along the guide 164. The guide 164 is sized and shaped to receive at least part of the carrying device 110. In some embodiments, the guide 164 has a first side, a second side, and a third side to form a U-shaped or C-shaped channel. In such embodiments, thecarrying device 110 is retained within the U-shaped or C-shaped channel when the carrying device 110 is traveling from the lower portion (e.g., bottom) of the load L to the upper portion (e.g., top) of the load L. Using a U-shaped or C-shaped channel enables the carrying device 110 to travel vertically on a side of the load L. Thus, in some embodiments, the guide 164 is an opentopped channel.

[0035] Referring to Figures 3 and 4, the strapping system 100 assists an operator in positioning a strap around a load L. The load L includes a top T, a bottom B opposite the top T, a first side SI, and a second side S2 opposite the first side SI, where the first and second sides SI and S2 are disposed between the top T and the bottom B. The load L is disposed on a pallet P that includes one or more through channels TC. The load L on the pallet P may be referred to as a palletized load.

[0036] The strapping system 100 is positioned near the first side Si of the load L. A first end 104 of the strap 102 is dispensed or pulled from the strap supply 166 and coupled to the carrying device 110, while a second end 106 of the strap 102 is coupled to the strap supply 166. The carrying device 110 is then activated by an operator so that the carrying device 110 travels around the load L. In some embodiments, the carrying device independently moves around the load L, without operator intervention.

[0037] An example of the carrying device 110 moving around the load L while the carrying device 110 draws strap from the strap supply 116 is described next. The carrying device 110 moves across the top T of the load L, down the second side S2 of the load L, through the through channel TC and underneath the bottom B of the load L, and up the first side Si of the load L. As the carrying device 110 reaches the lower portion of the load L at the first side Si, the carrying device 110 is received by the guide 164. The carrying device 110 moves along the guide 164 from the lower portion to the upper portion of the load L.

[0038] As the carrying device 110 reaches the top T of the load L, the carrying device 110 draws a length of the strap 102 from the strap supply 166, so that the strap 102 at least partially encircles the load L.

[0039] In some embodiments, once the strap 102 encircles the load L, the strap-tensioning assembly 130 engages a length of the strap 102 and positions and holds the strap 102 undertension, preparing it for final securing operations and ensuring that the load L is firmly encircled. For example, the strap-tensioning assembly 130 holds and positions the first end 104 of the strap 102 in place.

[0040] Next, in some embodiments, the strap-sealing assembly 140 cuts the strap 102 from the strap supply 166 and secures the first end 104 of the strap 102 to another portion of the strap 102, effectively sealing the strap 102 around the load L. In some embodiments, the strap-sealing assembly 140 attaches both the first end 104 and the newly cut opposite end of the strap 102 directly to a side of the load L.

[0041] In some embodiments, after the strap 102 is sealed around the load L, the operator places the carrying device 110 in the basket 165.

[0042] As noted above, in some embodiments, the strapping system 100 does not include the strap-tensioning assembly 130 and / or the strap-sealing assembly 140. In such embodiments, once the strap 102 encircles the load L, the operator uses a strapping tool to hold and position the first end 104 of the strap 102 in place. Further, in such embodiments, the operator uses the strapping tool to cut the strap 102 from the strap supply 166 and secure the first end 104 of the strap 102 to another portion of the strap 102, effectively sealing the strap 102 around the load L. In some embodiments, the operator uses the strapping tool to attach both the first end 104 and the newly cut opposite end of the strap 102 directly to a side of the load L.

[0043] Figure 6 is a simplified diagram of an example of a carrying device 210. The carrying device 110 could take the form of the carrying device 210. The carrying device 210 includes a frame 212, a traction system 220, a motor 222, a power source 224, a drivetrain 226, a memory device 227, a sensor 228, and a controller 229.

[0044] The frame 212 is configured to adjust a height of the carrying device 210 between a compressed state and an extended state. In some embodiments, the frame 212 is configured to adjust the height of the carrying device 210 such that the carrying device 210 maneuvers around the load L and fits between two surfaces. For example, the frame 212 is configured to adjust the height of the carrying device so that the carrying device 210 fits between the bottom B of the load L and a ground surface on which the palletized load is positioned. As another example, theframe 212 is configured to adjust the height of the carrying device 210 so that the carrying device 210 fits between a side wall of the load L and the guide 164.

[0045] The traction system 220 is coupled to the frame 212 and configured to enable the carrying device 210 to be mobile. In some embodiments, the traction system 220 includes a plurality of wheels. In some embodiments, the wheels are magnetic to allow for vertical upwards movement on the guide 164 without touching the load L.

[0046] The motor 222 is also coupled to the frame 212 and is powered by a power source 224. In some embodiments, the power source 224 includes a battery. The motor 222 produces mechanical rotation that is transferred to the traction system 220 via a drivetrain 226. In some embodiments, the drivetrain 226 is coupled to the motor 222 and configured to transfer the mechanical rotation produced by the motor 222 to the traction system 220, causing the carrying device 210 to move.

[0047] Both the sensor 228 and the controller 229 are coupled to the frame 212. In some embodiments, the sensor 228 is positioned in a front region of the carrying device 210 so that the sensor 228 is aligned with a direction of travel of the carrying device 210.

[0048] The sensor 228 is configured to receive information regarding a surface of the load L (e g., the top T, bottom B, and side surfaces Si and S2) and send a signal to the controller 229 to detect a path of the carrying device 210. In some embodiments, the carrying device 210 uses the detected path to independently move across each surface of the load L. In some embodiments, the controller 229 determines a travel parameter from the data received from the sensor 228. The travel parameter is utilized to adjust the path of the carrying device 210. Further, in some embodiments, the travel parameter includes a direction, speed, and / or orientation of the carrying device 210. In some such embodiments, the orientation of the carrying device includes a proximity of the carrying device 210 to the edge of a surface of the load L.

[0049] In some embodiments, the sensor 228 includes one or more of a light sensor, position sensor, sonar, ultrasonic, infrared, radar, or a light detection and ranging (LiDAR) sensor in communication with the controller 229 to detect a path for the carrying device 210. Further, in some embodiments, the sensor 228 is configured to detect nearby objects and measure distances to them.

[0050] The controller 229 is configured to control operations of the carrying device 210. The controller 229 is in communication with the sensor 228 and the memory device 227 containing data for performing operations of the carrying device 210.

[0051] In some embodiments, the controller 229 includes a processing device (or devices) communicatively connected to the memory device 227. For instance, in some embodiments, the controller 229 is a programmable logic controller. In some embodiments, the processing device includes any suitable processing device such as, but not limited to, a general -purpose processor, a special-purpose processor, a digital-signal processor, one or more microprocessors, one or more microprocessors in association with a digital-signal processor core, one or more application-specific integrated circuits, one or more field-programmable gate array circuits, one or more integrated circuits, and / or a state machine. In some embodiments, the memory device 227 includes any suitable memory device such as, but not limited to, read-only memory, randomaccess memory, one or more digital registers, cache memory, one or more semiconductor memory devices, magnetic media such as integrated hard disks and / or removable memory, magneto-optical media, and / or optical media.

[0052] The controller 229, and / or the data contained in the memory device 227 are configured to control the traction system 220, based at least in part on the information received from the sensor 228. The controller 229 is configured to analyze the information received or retrieved from the sensor 228, and the data on the memory device 227 to detect the path of the carrying device 210.

[0053] Although the controller 229 is coupled to the frame 212 in the embodiments described above, in other embodiments, the sensor 228 is configured to interface with a remote controller that is communicatively and operably connected to the carrying device 210. In such embodiments, the remote controller is not part of the carrying device 210 or strapping system 100, but is configured to interface with portions of the carrying device 210 or the strapping system 100. The remote controller could take the same or similar form as any embodiment of the controller 229.

[0054] Figures 7, 8 A, and 8B illustrate an example carrying device 310. The carrying device 210 could take the form of the carrying device 310. The carrying device 310 includes a frame312, a traction system 320, a motor 322, a power source 324, a drivetrain 326, a memory device 327, a sensor 328, and a controller 329.

[0055] The frame 312 of the carrying device 310 includes two pairs of scissor legs 313. Each pair of scissor legs 313 consists of a first leg 314 and a second leg 315 that pivotally connect at their midpoints M to each other. The two pairs of scissor legs 313 cause the frame 312 to expand into an extended position or collapse into a compressed position.

[0056] The frame 312 also includes a plurality of horizontal bars 316 coupling the two pairs of scissor legs 313 to each other. Each horizontal bar 316 of the plurality of horizontal bars 316 includes a first end that is opposite of a second end. The first end of each horizontal bar 316 is coupled to an end of a leg 314 or 315 of a first pair of scissor legs of the two pairs of scissor legs 313, and the second end of each horizontal bar 316 is coupled to a corresponding end of a leg 314 or 315 of a second pair of scissors legs of the two pairs of scissor legs 313.

[0057] The traction system 320 is coupled to the frame 312 and configured to allow the frame 312 to be mobile. In this embodiment, the traction system 320 is a plurality of wheels. Each wheel 320 is mounted at the ends of each scissor leg 314 or 315. The wheel placement causes smooth navigation over surfaces of the load L and provides stability for movement around the load L.

[0058] In the carrying device 310, a pair of vertically positioned springs 317 is positioned between the horizontal bars 316. A spring of the pair of springs 317 is positioned vertically at one end of the frame 312 between two horizontal bars 316. Another spring of the pair of springs 317 is positioned at the other end of the frame 312 between two horizontal bars 316.

[0059] The springs 317 generate a force so as to keep the frame 312 in its extended position, such that the carrying device 310 maintains its height. When the carrying device 310 is in a compressed state, the springs 317 control compression and, when released, the springs 317 return the frame 312 to the extended state.

[0060] An example of the carrying device 310 moving around the load L while the carrying device 310 draws strap from the strap supply 166 is described next. The carrying device 310 independently moves around the load L by moving across its top surface T, descending down the second side S2, passing through the through channel TC, traveling beneath the bottom surface B,and then ascending along the first side Si. While traveling around the load L, a first end 104 of a strap 102 is coupled to the carrying device 310, thus partially encircling the load L with a length of the strap 102.

[0061] To navigate around the load L, the sensor 328 receives information regarding a surface of the load L on which the carrying device 310 is traveling. The sensor 328 sends a signal to the controller 329 to detect a path of the carrying device 310. In some embodiments, the carrying device 310 uses the detected path to independently move across the surface of the load L. In some embodiments, the controller 329 determines a travel parameter from the data received from the sensor 328.

[0062] As the carrying device 310 moves beneath the bottom surface B of the load L, the carrying device 310 compresses to fit within the confined space between the floor and a bottom surface B of the load L. The compression of the carrying device 310 is achieved by the frame 312, which collapses due to the action of scissor legs 313 and integrated springs 317.

[0063] Next, as the carrying device 310 reaches the lower portion of the load L at the first side Si, the carrying device 310 is received by the guide 164. To fit between the first side Si and the guide 164, the carrying device 310 compresses once more. The frame 312 collapses into a compressed position, allowing the springs 317 to exert an outward force that pushes the wheels 320 against both the first side Si and the interior side of the guide 164. As a result, the carry device 310 ascends the first side Si of the load L. In some embodiments, the wheels are magnetic such that the device ascends to the guide 164 without touching the load L.

[0064] As noted above, as the carrying device 310 travels around the load L, the first end 104 of the strap 102 is coupled to the carrying device 310. Consequently, the strap 102 is drawn from the strap supply 166, wrapping around the load L as the carrying device 310 advances.

[0065] Thus, in various embodiments, the disclosure provides a method for encircling a load with a strap drawn from a strap supply. The load includes a top, a bottom opposite the top and defining a through channel, a first side between the top and the bottom, and a second side opposite the first side and between the top and the bottom. The method includes positioning a strapping system near the first side of the load. The strapping system includes: a carrying device configured to move around the load; and a cart configured to support the strap supply. The cartincludes a vertically extending guide sized and shaped to receive at least part of the carrying device. The method also includes attaching an end of the strap of the strap supply to the carrying device; and moving the carrying device around the top, bottom, first side, and second side of the load while the carrying device draws strap from the strap supply such that the strap at least partially encircles the load.

[0066] In various embodiments, moving the carrying device around the top, bottom, first side, and second side of the load includes moving the carrying device across the top of the load, down the second side of the load, through the through channel defined by the load, and up the first side of the load.

[0067] In various embodiments, the method further includes guiding the carrying device along the guide from a lower portion of the load to an upper portion of the load.

[0068] In various embodiments, the method further includes cutting the strap from the strap supply and attaching the end of the strap to another portion of the strap.

[0069] In various embodiments, the cutting and attaching are performed by the carrying device.

[0070] In various embodiments, the carrying device is configured to independently move around the load.

[0071] In various embodiments, moving the carrying device around the top, bottom, first side, and second side of the load, further includes: detecting, via a sensor coupled to the carrying device, a path of the carrying device; and receiving, via a controller coupled to the carrying device, input from the sensor to adjust a move parameter of the carrying device.

[0072] In various embodiments, moving the carrying device around the top, bottom, first side, and second side of the load, further includes moving, via a motor of the carrying device, a traction system of the carrying device. The motor transfers mechanical rotation to the traction system via a drivetrain of the carrying device.

[0073] In various embodiments, the method further includes altering a height of the carrying device by adjusting a frame of the carrying device. The frame includes two pairs of scissor legs and a plurality of horizontal bars coupling the two pairs of scissor legs to each other. Each pair ofscissor legs includes a first leg having a midpoint and a second leg having a midpoint. The first leg and the second leg are pivotably coupled to each other at corresponding midpoints.

[0074] In various embodiments, moving the carrying device around the top, bottom, first side, and second side of the load, further includes compressing the carrying device between the first side of the load and the guide into a compressed state. The carrying device includes a pair of springs and each spring of the pair of springs is positioned vertically between the plurality of horizontal bars causing the frame of the carrying device to exert an outward force against the first side of the load and the guide. Additionally, moving the carrying device around the top, bottom, first side, and second side of the load includes moving the carrying device vertically from a lower portion of the first side of the load to an upper portion of the first side of the load along the guide.

[0075] In various embodiments, the disclosure provides a strapping system including: a carrying device configured to move around a load; and a cart configured to support a strap supply. The cart includes a vertically extending guide sized and shaped to receive at least part of the carrying device. An end of a strap disposed from the strap supply is attached to the carrying device.

[0076] In various embodiments of the strapping system, the carrying device is configured to self-navigate around the load.

[0077] In various embodiments of the strapping system, the cart is configured to be positioned adjacent to a side of the load, and wherein the carrying device is configured to move vertically on the side of the load in between the side of the load and the guide.

[0078] In various embodiments of the strapping system, the guide is configured to guide and retain the carrying device as the carrying device moves along the guide from a lower portion of the load to an upper portion of the load.

[0079] In various embodiments of the strapping system, the strapping system further includes a strapping tool. The strapping tool is configured to secure a length of the strap partially encircled around the load.

[0080] In various embodiments of the strapping system, the carrying device further includes a strap-sealing assembly configured to cut the strap from the strap supply and attach the end of the strap to another portion of the strap.

[0081] In various embodiments of the strapping system, the carrying device includes: a frame; a traction system coupled to the frame; a power source coupled to the frame; a motor coupled to the power source and configured to produce mechanical rotation; and a drivetrain coupled to the motor. The drivetrain is configured to transfer the mechanical rotation produced by the motor to the traction system. The carrying device further includes a sensor configured to detect a path of the carrying device; and a controller configured to receive input from the sensor and adjust a travel parameter of the carrying device.

[0082] In various embodiments of the strapping system, the frame of the carrying device is configured to adjust a height of the carrying device between a compressed state and an extended state.

[0083] In various embodiments of the strapping system, the frame of the carrying device includes two pairs of scissor legs. Each pair of scissor legs includes a first leg having a midpoint and a second leg having a midpoint. The first leg and the second leg are pivotably coupled to each other at corresponding midpoints.

[0084] In various embodiments of the strapping system, the frame of the carrying device further includes a plurality of horizontal bars coupling the two pairs of scissor legs to each other. Each horizontal bar of the plurality of horizontal bars includes a first end and a second end. The first end of each horizontal bar is coupled to an end of a leg of a first pair of scissor legs of the two pairs of scissor legs and the second end of each horizontal bar is coupled to a corresponding end of a leg of a second pair of scissors legs of the two pairs of scissor legs.

[0085] In various embodiments of the strapping system, the traction system includes a plurality of wheels. Each wheel of the plurality of wheels is coupled at each end of each leg of the pair of scissor legs.

[0086] In various embodiments of the strapping system, the carrying device further includes a pair of springs. Each spring of the plurality of springs is position vertically between the plurality of horizontal bars providing a force to position the frame in the extended state.

[0087] In various embodiments of the strapping system, the carrying device is in the compressed state when positioned between a side of the load and the guide.

[0088] Various changes and modifications to the above-described embodiments described herein will be apparent to those skilled in the art. These changes and modifications can be made without departing from the spirit and scope of this present subject matter and without diminishing its intended advantages. Not all of the depicted components described in this disclosure may be required, and some implementations may include additional, different, or fewer components from those expressly described in this disclosure. Variations in the arrangement and type of the components; the shapes, sizes, and materials of the components; and the manners of attachment and connections of the components may be made without departing from the spirit or scope of the claims as set forth herein. Also, unless otherwise indicated, any directions referred to herein reflect the orientations of the components shown in the corresponding drawings and do not limit the scope of the present disclosure. This specification is intended to be taken as a whole and interpreted in accordance with the principles of the invention as taught herein and understood by one of ordinary skill in the art.

Claims

CLAIMS1. A method for encircling a load with a strap drawn from a strap supply, wherein the load comprises a top, a bottom opposite the top and defining a through channel, a first side between the top and the bottom, and a second side opposite the first side and between the top and the bottom, the method comprising:positioning a strapping system near the first side of the load, wherein the strapping system comprisesa carrying device configured to move around the load, anda cart configured to support the strap supply, wherein the cart comprises:a vertically extending guide sized and shaped to receive at least part of the carrying device;attaching an end of the strap of the strap supply to the carrying device; andmoving the carrying device around the top, bottom, first side, and second side of the load while the carrying device draws strap from the strap supply such that the strap at least partially encircles the load.

2. The method of claim 1, wherein moving the carrying device around the top, bottom, first side, and second side of the load comprises moving the carrying device across the top of the load, down the second side of the load, through the through channel defined by the load, and up the first side of the load.

3. The method of claim 1, further comprising guiding the carrying device along the guide from a lower portion of the load to an upper portion of the load.

4. The method of claim 1, further comprising cutting the strap from the strap supply and attaching the end of the strap to another portion of the strap.

5. The method of claim 4, wherein the cutting and attaching are performed by the carrying device.

6. The method of claim 1, wherein the carrying device is configured to independently move around the load.

7. The method of claim 1, wherein moving the carrying device around the top, bottom, first side, and second side of the load, further comprises:detecting, via a sensor coupled to the carrying device, a path of the carrying device; and receiving, via a controller coupled to the carrying device, input from the sensor to adjust a move parameter of the carrying device.

8. The method of claim 7, wherein moving the carrying device around the top, bottom, first side, and second side of the load, further comprises:moving, via a motor of the carrying device, a traction system of the carrying device, wherein the motor transfers mechanical rotation to the traction system via a drivetrain of the carrying device.

9. The method of claim 7, further comprising altering a height of the carrying device by adjusting a frame of the carrying device,wherein the frame comprises two pairs of scissor legs and a plurality of horizontal bars coupling the two pairs of scissor legs to each other,wherein each pair of scissor legs includes a first leg having a midpoint and a second leg having a midpoint, andwherein the first leg and the second leg are pivotably coupled to each other at corresponding midpoints.

10. The method of claim 9, wherein moving the carrying device around the top, bottom, first side, and second side of the load, further comprises:compressing the carrying device between the first side of the load and the guide into a compressed state, wherein the carrying device includes a pair of springs and each spring of the pair of springs is positioned vertically between the plurality of horizontal bars causing the frame of the carrying device to exert an outward force against the first side of the load and the guide; andmoving the carrying device vertically from a lower portion of the first side of the load to an upper portion of the first side of the load along the guide.

11. A strapping system comprising:a carrying device configured to move around a load; anda cart configured to support a strap supply, the cart comprising:a vertically extending guide sized and shaped to receive at least part of the carrying device,wherein an end of a strap disposed from the strap supply is attached to the carrying device.

12. The strapping system of claim 11, wherein the carrying device is configured to selfnavigate around the load.

13. The strapping system of claim 11, wherein the cart is configured to be positioned adjacent to a side of the load, and wherein the carrying device is configured to move vertically on the side of the load in between the side of the load and the guide.

14. The strapping system of claim 13, wherein the guide is configured to guide and retain the carrying device as the carrying device moves along the guide from a lower portion of the load to an upper portion of the load.

15. The strapping system of claim 11, further comprising a strapping tool, wherein the strapping tool is configured to secure a length of the strap partially encircled around the load.

16. The strapping system of claim 11, wherein the carrying device further comprises a sealing tool configured to cut the strap from the strap supply and attach the end of the strap to another portion of the strap.

17. The strapping system of claim 11, wherein the carrying device comprises:a frame;a traction system coupled to the frame;a power source coupled to the frame;a motor coupled to the power source and configured to produce mechanical rotation; a drivetrain coupled to the motor, the drivetrain configured to transfer the mechanical rotation produced by the motor to the traction system;a sensor configured to detect a path of the carrying device; anda controller configured to receive input from the sensor and adjust a travel parameter of the carrying device.

18. The strapping system of claim 17, wherein the frame of the carrying device is configured to adjust a height of the carrying device between a compressed state and an extended state.

19. The strapping system of claim 18, wherein the frame of the carrying device comprises two pairs of scissor legs, wherein each pair of scissor legs includes a first leg having a midpoint and a second leg having a midpoint, and wherein the first leg and the second leg are pivotably coupled to each other at corresponding midpoints.

20. The strapping system of claim 19, wherein the frame of the carrying device further comprises a plurality of horizontal bars coupling the two pairs of scissor legs to each other, wherein each horizontal bar of the plurality of horizontal bars comprises a first end and a second end, and wherein the first end of each horizontal bar is coupled to an end of a leg of a first pair of scissor legs of the two pairs of scissor legs and the second end of each horizontal bar is coupled to a corresponding end of a leg of a second pair of scissors legs of the two pairs of scissor legs.

21. The strapping system of claim 20, wherein the traction system comprises a plurality of wheels, and wherein each wheel of the plurality of wheels is coupled at each end of each leg of the pair of scissor legs.

22. The strapping system of claim 21, wherein the carrying device further comprises a pair of springs, and wherein each spring of the plurality of springs is position vertically between the plurality of horizontal bars providing a force to position the frame in the extended state.

23. The strapping system of claim 22, wherein the carrying device is in the compressed state when positioned between a side of the load and the guide.

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