Trees are blown over or fall due to age. The fallen tree can strike building structures such as homes. The trees can also be hung up by the canopy and branches of nearby trees. This makes the removal of the tree hazardous and the removal process may cause injury to persons or further damage to structures.
Electrical power poles can also be damaged and lean precipitously after storms or other incidents such as vehicle collisions. The poles may be partially held upright by power cables. The top of the poles may contain multiple heavy transformers. These transformers will need to be removed as part of clearing of the broken pole. The power lines must also be disconnected as part of the steps to restore power. The damaged pole may shift and twist as cleanup work is performed.
This disclosure teaches structures or apparatus that can be used in the removal or disassembly downed trees, utility poles or other structures. The disclosure teaches an apparatus that can lift or stabilize the tree, etc. (Hereinafter the term tree will be used but it understood that the disclosure also applies to utility or light poles or other structures such as towers.) This stability will allow the tree to be lifted upward to allow removal or disassembly of structures upon which the tree has fallen such as garages, homes or other structures. It will facilitate the safe removal of items from these structures. The weight of the tree will no longer rest upon the garage, etc.
The apparatus of this disclosure can have several embodiments. One embodiment will be a portable jack stand that can be transported to the site. To facilitate transportation, the jack stand (which may be a cylinder/piston combination or similar device) can be carried to the site in multiple components that can be assembled on site. For example, the cylinder, when assembled, can utilize a plurality of support legs that will secure and stabilize the cylinder in a vertical orientation relative to the ground surface. To lessen the weight and size of the device when transporting to the site, the support legs can be removed. Also the cylinder and each leg will have a support base to distribute the weight of the device (and tree) across a ground surface. These bases may also be detachable when transported and positioned and re-attached on site.
In an embodiment, one or more support legs can be of adjustable length (extendible) to allow for an uneven ground surface. Also at least one of the support legs can be positioned in a varying angle to the vertically oriented cylinder.
Another embodiment is a wheeled trailer type of device that comprises scissor lifts or telescoping lift components. The wheeled device will be appreciated to allow the assembled lifting/stabilizing device to be transported to a remote site without disassembly and re-assembly on site.
In another embodiment, dual lifting components may be used. The dual lift components may be two jack stands placed side by side and on opposite sides of the axis of the trunk. The two lifting components may be joined by and support a single cradle that is positioned beneath the trunk. When the lifting components are raised (elevation of jack stand, scissor lift, telescoping lift, etc.) the cradle engages with the trunk. The cradle, in conjunction with the lifting components, supports the weight of the tree and may lift the tree.
Other embodiments that will become apparent to persons skilled in the art after reading this disclosure and accompanying drawings are included within the scope of this disclosure.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the disclosure. These drawings, together with the general description of the disclosure given above and the detailed description of the preferred embodiments given below, serve to explain the principles of the disclosure. It will be appreciated that the drawings are not to scale. Also details of the illustrated structures that will be readily understood by persons skilled in the art are not shown.
This disclosure teaches a portable stand or structure that can secure the tree, pole or other structure into a fixed position while cleanup work is performed. It may also provide support for the collapsed tree or pole, etc., thereby limiting further damages to structures upon which the tree or pole has collapsed.
The portable stand can prevent from further movement as portions of the fallen tree are cut away for disposal. It will be appreciated that as tree limbs are cut away, the weight of the remaining tree can shift, causing the tree to twist and turn unexpectedly placing the worker or workers in or near the tree in jeopardy. The shift in the tree can also cause further property damage.
The stand can be transported to site. In one embodiment the stand can be disassembled and assembled on site. This can be particularly useful for removal from remote or vehicle inaccessible areas.
One component of the disclosure is a jack stand or moveable piston housed in a cylinder. This component can be placed on a stand or plate distributing weight over a portion of ground surface. The component is vertically oriented between the ground and a portion of the tree, e.g., the tree trunk or leaning utility power pole. It will be appreciated that the remainder of this disclosure may speak in terms of fallen tree remediation but that the structure or component taught of this disclosure may be equally useful for remediation of utility light and power poles, etc.
The component, which is expandable, can be elevated to be placed in contact with the trunk above the component. For example, the piston can be mechanically or hydraulically elevated out of the cylinder to engage the surface of the tree trunk. The expandable component may comprise a cylinder/piston combination. In another embodiment, the lift mechanism or component may be a scissors lifting component wherein the cylinder and piston can start from an approximately horizontal position and, upon expansion, cause a lift arm to vertically elevate. The cylinder piston combination will also pivot to an approximately vertical position. In yet another embodiment, there may be multiple nested piston-like components that are elevated in a vertical direction from a cylinder component. This is referred to as a telescoping lift device or mechanism.
The cylinder/piston combination or telescoping piston embodiment may be hydraulically operated. A power supply, e.g., battery, and a pump are not shown. The jack stand may also be mechanically operated by a lever/rachet combination or turning crank.
It will be appreciated that the disclosure includes a combination of lifting devices. For example two scissor lifts can be position as illustrated in
The tree trunk may be resting partially upon a structure such as a house or garage. In most events, the tree truck is positioned at an angle to the ground surface. For example the tree trunk can be resting at approximately 30° to 65° to the ground surface.
The component will have a top component that contacts or engages with the tree trunk. The top component may have a pivotable surface that can conform to the angle of tree. This component may sometime be referred to as the cradle. The cradle may pivot atop the piston on a hinged or ball and socket connection. This pivoting capacity can accommodate the angled tree trunk relative to the ground upon which the cylinder and piston are positioned. The cradle may have a further extendable portion that facilitates close and secure attachment to the bottom of the trunk surface. In one embodiment the top surface of the cradle may have protrusions or teeth that bite into the tree surface to enhance stability.
The top component may have one or more straps or collars that may be positioned around the trunk to encircle the trunk and secure it to the cradle or piston. In other embodiments, the top component may be adapted to hold teethed collars tightly against and at least partially around the trunk. The teethed structures may bite into and through the outer tree bark to prevent twisting or rotational movement of the tree trunk during the de-limbing of the tree canopy. This would equally apply to leaning power or utility poles as structures are removed from the upper portions of the poles, e.g., heavy transformers. It will be appreciated that the device used for downed power poles may not have teethed attachments that damage the structure for situations where the pole may be salvaged and reused.
Again, the vertical component of the stabilizing device subject of the disclosure is expandable in the vertical direction. The component may be a hydraulic powered jack that expands and presses up against tree trunk, thereby transferring part of the weight of the tree to the ground beneath the jack. In another embodiment, the vertical component may be an extendable piston within a cylinder. The path of movement of the piston is vertically upward and similarly can extend to the trunk and transfer weight to the ground. Manual levered or screw controlled jacking mechanisms may also be employed. The screw controlled jacking mechanism may be controlled by a turning wheel or handle.
As already mentioned, the top of the extending vertical component contains a top cradle that engages with the tree trunk surface (at an angle to the horizontal). The connection or attachment juncture between the top of vertical component, e.g., top of the piston shank, and the top component may allow the cradle to pivot to create an angle to the ground surface. This pivoting allows maximum contact between the cradle and the surface of the tree truck (or pole surface).
Various designs or configurations of the top component to the trunk surface are subject of this disclosure. In one embodiment, the top component may serve as the attachment device for one or more flexible straps that may be threaded through or otherwise attached to the cradle wherein the straps are wrapped and tightened about the circumference of the trunk surface. In another embodiment, the straps can be chains that are tighten around the trunk surface. In yet another embodiment, the cradle may be attached to tighten-able rigid segment wherein each segment may contain protrusions or teeth that bite into and through the trunk bark to engage the underlying wood trunk structure, thereby ensuring the twisting or rotation of the trunk is not possible. See
An important subcomponent may be multiple plates that are horizontally positioned on the ground surface. One such plate is positioned beneath the vertical component (cylinder) discussed above. This plate distributes the weight over an area of ground surface.
The vertical orientation of the vertical component, e.g., jack stand or piston/cylinder configuration, can be maintained by one or more extendable support legs that extend from the vertical component, e.g., cylinder/piston combination, at an angle. The cross section of the legs can be round (tubular) or rectangular, e.g., square. Each leg is similarly supported or positioned on a horizontally oriented plate positioned on the ground surface. In one embodiment, each leg can be attached with a chain or cable secured proximate to the bottom portion of the leg and vertical component. The cable or chain may prevent the one or more legs becoming splayed away from the vertical component and no long providing support. The chain or cable may be adjustable. In another embodiment, a hinged support leg can be secured with variable angled attachment plates having complementary bolt or anchor holes, i.e., a plate extends from the support leg toward the cylinder wall and is positioned adjacent to a plate extending from the cylinder wall. See
In one embodiment of the disclosure, there can be five supporting legs. In another embodiment, there may be 2 or more legs. The ground “foot print” of the embodiment comprising 5 supporting legs can resemble a five pointed star. In an embodiment, two supporting legs can be positioned on each side of the trunk, each approximately parallel to the longitudinal axis of the tree trunk. The fifth supporting leg extends from the vertical component to the ground (supported by a base plate forming an apex of the star pattern) and in line with the longitudinal axis of the tree trunk.
In a further embodiment illustrated in
The legs intersect and attach with the vertical wall or structural elements of the vertical component. The attachment may comprise a hinged or pivoting subcomponent. The attachment of the support leg can also be hinged or pivoting. The attachment can comprise two compatible dimensioned substructures that can be joined by a removable pin or similar configuration that can be dis-assembled and which facilitates transport of the device in component parts and assembly and interconnection at the site of the fallen tree. In one embodiment, the stabilizing leg attachment is with the wall of the vertically oriented cylinder. In another embodiment, the attachment can be located on the piston wall, cradle or other component. It will be appreciated that the cylinder does not elevate upon activation. However the piston, collar or other component will vertically extend when the jack or mechanism is activated.
In another embodiment (not shown), each leg may comprise two parts. The first component may removably extend substantially horizontally from the vertical component. The first component may also removably attach to a second lower leg segment that is vertically oriented and rests on the ground support. In an embodiment, the junction between the first leg component and second lower leg component may form a rigid angle such as a 90° angle.
Each support or stabilizing leg may be extendable. In one embodiment, length may be extended by a threaded rod element extending into the leg housing. In another embodiment, each support leg will comprise two or more separate telescoping segments. Each segment will contain complementary and evenly spaced holes. A pair of holes can be aligned on each support leg and an anchor bolt inserted through both leg segments to secure a specified length. This variable supporting leg length will be useful for situations in which the ground surface is uneven.
Returning to the top component, e.g., cradle, positioned atop the vertical component, e.g., piston, the top component may be fitted with collar attachment subcomponents. One or more collars may encircle the tree trunk. The collars may be tightened around the trunk. The collars, stabilized by the combined weight bearing vertical component and the multiple support legs, prevent the tree from twisting or turning (rotating) as limbs are removed from the tree. It facilitates the anchoring or fixing of the fallen tree into a single position.
Referring to
With reference to
In the embodiment illustrated in
Also illustrated in
In another embodiment, a threaded rod fixed to the bottom of the cradle can be screwed into a complementary hole in the top of piston. It will be appreciated that there may be multiple sized cradles appropriate to the varying sized (diameter) trunks. This embodiment allows greater flexibility for dimensioning the cradle size to the particular situation. The threaded rod or bolt like structure extending from the bottom of the cradle can be hinge-ably attached or welded to the bottom of the cradle. Note that this embodiment can also be used for increasing or adjusting the height of the cradle relative to the top of the piston.
Referring to
The scissor lift device 700 may be stabilized by the frame of the holding one or more scissor lift components. The scissor lift component (combination of a cylinder 106, piston 105 and lift arm 720) can be mounted on a wide horizontally oriented frame 706 and connected with a push plate 705 and integral to the frame. It will be appreciated that the wide frame will provide stability as the scissor lift component extends vertically upward and engages with the weight of the tree trunk or pole. This vertical movement is shown by vector arrow 903 in
In an embodiment, the frame 706 may be attached to extendable stabilizing legs or posts (boom) 710, 711, 712 that extend to the ground surface 102. See vector arrow 906. Only one such boom component is illustrated in
The frame holding the scissor lift components may be moved by one or more wheels 701. Four wheels are illustrated in
To provide enhanced stability, a plurality of scissor lift components can be utilized in the scissor lift device. For example, two scissor lifts can be positioned 750 on a push plate 705 integral to the device frame 706. Each lift component is used in tandem or cooperation with the other. The two scissor lifts are positioned with a horizontal axis of orientation parallel to the other. Stated differently, the two scissor lifts are positioned side by side as illustrated in
It will be appreciated that the scissor lift device frame 706 can be mounted with one or more wheels 701. This will facilitate movement of the device across the ground to the location of the fallen tree, pole or other structure. It will also facilitate optimal positioning of the device under the tree, etc.
This specification is to be construed as illustrative only and is for the purpose of teaching those skilled in the art the manner of carrying out the disclosure. It is to be understood that the forms of the disclosure herein shown and described are to be taken as the presently preferred embodiments. As already stated, various changes may be made in the shape, size and arrangement of components or adjustments made in the steps of the method without departing from the scope of this disclosure. For example, equivalent elements may be substituted for those illustrated and described herein and certain features of the disclosure maybe utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure.
While specific embodiments have been illustrated and described, numerous modifications are possible without departing from the spirit of the disclosure, and the scope of protection is only limited by the scope of the accompanying claims.
This application claims priority to provisional application 62/971,590 entitled “Tree and Pole Stabilization Tool” filed Feb. 7, 2020 and to which is incorporated herein by reference in its entirety.
Number | Date | Country | |
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62971590 | Feb 2020 | US |