Safety and control device, system, and method thereof for a waste processing system
10245592 ยท 2019-04-02
Assignee
Inventors
Cpc classification
International classification
Abstract
A safety and control system for a wood chipper includes a positional switch having at least a first and second position and a hydraulic valve adapted to provide hydraulic fluid to the feed wheel system thereby powering the feed wheel system when is a first position, and diverting hydraulic fluid to a reservoir, thereby removing power from the feed wheel system, when is a second position, whereby a the valve and the switch are operatively connected such that when the switch is the first position, the valve is in a first position and is adapted to send hydraulic fluid to the feed wheel system, and when the switch is in the second position, the valve is in a second position and is adapted to send hydraulic fluid to the reservoir.
Claims
1. A control system comprising: a wood chipper having a powered cutting system, a hydraulically powered feed system, and an infeed tray comprising a feedforward side for receiving wood material and a rearward side opposite the feedforward side adapted to allow the wood material to enter the hydraulically powered feed system; an actuator comprising an elongated bar mounted to the infeed tray of the wood chipper and extending between opposite sides near the feedforward side of the infeed tray with the actuator having at least a first position and a second position; a hydraulic valve fluidly positioned along an underside of the infeed tray, the hydraulic valve connected to the feed system and comprising a mechanical input with the valve adapted to permit operation of the feed system when the actuator is in the first position, and interrupt operation of the feed system when the actuator is in the second position; a lever coupled to the mechanical input of the valve with the lever adapted to be actuated when the actuator is in the second position to manually reset the control system and permit operation of the feed system; and a linkage system coupling the actuator and the hydraulic valve, and coupling the lever and the hydraulic valve with the linkage system comprising a first link positioned on and extending along the underside of the infeed tray from the actuator towards the rearward side of the infeed tray, and a second link positioned on the underside of the infeed tray.
2. The control system according to claim 1 wherein: the linkage comprises an elongated rod having a first end coupled to the actuator, and a second end mechanically coupled to the mechanical input of the valve.
3. The control system according to claim 1 wherein: the actuator comprises a biasing device for biasing the actuator to the first position.
4. The control system according to claim 1 wherein the linkage further comprises: a first end coupled to the actuator; a second end mechanically coupled to the mechanical input of the valve; and wherein the linkage moves substantially linearly to alternate the valve between a first position and a second position.
5. The control system according to claim 1 wherein: the linkage further comprises a turnbuckle comprising at least one internally threaded end.
6. The control system according to claim 5 wherein: at least one of the ends of the turnbuckle comprises an enlarged pad.
7. The control system according to claim 1 wherein: the valve diverts hydraulic fluid from the feed system to a hydraulic storage tank when the actuator is moved from the first position to the second position.
8. A wood chipper comprising: a hydraulically powered feed system comprising one or more feed wheels; an infeed tray comprising a feedforward side for receiving wood material and a rearward side opposite the feedforward side adapted to allow the wood material to enter the hydraulically powered feed system; an actuator mounted to the infeed tray of the wood chipper and having at least a first position and a second position; a control valve having a mechanical input and in fluid communication with the one or more feed wheels, adapted to interrupt operation of the one or more feed wheels in response to actuation of the mechanical input of the control valve; a linkage positioned along an underside of the infeed tray and comprising: (a) a first end coupled to the actuator positioned near the feedforward side of the infeed tray; (b) a second end coupled to the mechanical input of the control valve; (c) wherein the linkage moves substantially linearly to actuate the control valve when the actuator moves between the first position and the second position; a lever adapted to be actuated with the actuator in the second position to manually move the actuator and the linkage from the second position to the first position; and a mechanical link positioned along an underside of the infeed tray and coupling the lever and the mechanical input of the control valve.
9. A wood chipper comprising: a powered cutting system, a hydraulically powered feed system comprising one or more feed wheels, and an infeed system comprising an infeed tray and an infeed chute; an actuator comprising an elongated bar hingedly affixed to a forward feed side of the infeed tray and having at least a first position and a second position, the second position engageable upon an operators input, the actuator further comprising a biasing device for biasing the bar to the first position; a control valve in fluid communication with the one or more feed wheels, the valve mounted to the infeed chute of the wood chipper, the valve adapted to permit hydraulic fluid to flow within the hydraulically powered feed system so as to allow operation of the one or more feed wheels when in a first position, and adapted to divert hydraulic fluid from the hydraulically powered feed system to a reservoir, thereby diverting hydraulic power from the one or more feed wheels when in a second position, the second position being set in response to a mechanical input; a turnbuckle operatively interlinking the actuator and the mechanical input of the valve thereby providing a direct mechanical connection between the actuator to the valve such that when the actuator is the first position the valve is not acted upon and remains in the first position, and when the actuator is moved to the second position the linkage transmits and moves the valve to the second position; wherein the control valve must be manually reset from the second position to the first position, by an operator, via a lever.
10. The wood chipper according to claim 1 wherein: the linkage comprises a turnbuckle operatively interlinking the actuator and the mechanical input of the valve.
11. A wood chipper comprising: an infeed tray comprising a first side opposite a second side and separated by a feedforward side for receiving wood material and a rearward side opposite the feedforward side adapted to allow the wood material to enter a hydraulically powered feed system; an actuator having at least a first and second position, the actuator comprising an elongated bar extending from the first side of the infeed tray to the second side of the infeed tray, and along a bottom of the infeed tray; a hydraulic valve adapted to provide hydraulic fluid to the feed system thereby powering the feed system when the actuator is in a first position, and removing power from the feed system when the actuator is in a second position; a first lever operably coupled to the hydraulic valve and positioned near the first side of the infeed tray; a second lever operably coupled to the hydraulic valve and positioned near the second side of the infeed tray; and a linkage system coupling the actuator and the hydraulic valve, and coupling the first and second levers and the hydraulic valve with the linkage system comprising a first link positioned on and extending along the underside of the infeed tray from the actuator towards the rearward side of the infeed tray, and a second link positioned on the underside of the infeed tray.
12. The wood chipper according to claim 11 further comprising: a second elongated bar extending from the first side of the infeed tray to the second side of the infeed tray, and along a bottom of the infeed tray with the first and second levers coupled to opposing ends of the second elongated bar with the linkage system coupled to the second elongated bar.
13. The control system according to claim 1 wherein: the actuator is adapted to be pivoted between the first and second positions with the pivotal motion of the actuator resulting in substantially linear motion of the linkage along the underside of the infeed tray.
14. The wood chipper according to claim 11, further comprising: a turnbuckle coupled to the elongated rod and adapted to adjust a length of the linkage.
15. The control system according to claim 1 wherein the lever comprises a pair of levers.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) As a compliment to the description and for better understanding of the specification presented herein, 16 pages of drawings are disclosed with an informative, but not limiting, intention.
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
(25) The best mode for carrying out the invention is presented in terms of the preferred embodiment, wherein similar referenced characters designate corresponding features throughout the several figures of the drawings.
(26) For purposes of description herein, the terms upper, lower, right, left, rear, front, vertical, horizontal, and derivatives thereof, shall relate to the invention as oriented in
(27) Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. These same referenced numerals may be used throughout the drawings to refer to the same or like parts. Further, like features between the various embodiments may utilize similar numerical designations. Where appropriate, the various similar features may have been further differentiated by an alphanumeric designation, wherein the corresponding alphabetic designator has been changed. Further, the dimensions illustrated in the drawings (if provided) are included for purposes of example only and are not intended to limit the scope of the present invention. Additionally, particular details in the drawings which are illustrated in hidden or dashed lines (if provided) are to be considered as forming no part of the present invention.
(28) As used herein, the terms wood and wood products are meant to be used and defined in their broad, general, and ordinary sense, and the terminology is meant to include trees, brush, trunks, stems, branches, leaves, or the like, or anything else that could otherwise be recycled, reduced, or otherwise processed; and further includes non-naturally occurring or manufactured wood products such as lumber, pallets, or other manufactured products that could otherwise be recycled, reduced, or otherwise processed, as is generally known within the art.
(29) As used herein, the term waste processing system is meant to be used and defined in its broad, general, and ordinary sense. To wit, systems that recycle, reduce, or otherwise process wood products. Included therein are machines that chip, cut, grind, or otherwise reduce wood waste products and include, generally, wood chippers, shredders, grinders, and the like. Of course, this is not meant to be limiting in any manner and these systems may take on numerous configurations, and may be used for numerous purposes as is generally known within the art.
(30) As used herein, the term primary system is meant to be used and defined in its broad, general, and ordinary sense. To wit, the waste processing systems (i.e., sub-systems) which are responsible for the primary operations and/or features of the overall waste processing machine and/or system and included therein is the feed system, the cutting system, and the power supply, source, or engine. Of course, this is not meant to be limiting in any manner and these systems may take on numerous configurations, and may be used for numerous purposes as is generally known within the art.
(31) For the most part hereinafter we will limit our discussion of the invention as related to a wood chipper. However, the inventive embodiments disclosed herein are not meant to be so limited (unless claimed as such), and the systems, devices, and methods disclosed herein may be utilized on any waste processing machine.
(32) With such in mind, as used herein, the term wood chipper is meant to be used and defined in its broad, general, and ordinary sense. To wit, systems that recycle, reduce, or otherwise process wood products. Included therein are machines that chip, cut, grind, or otherwise reduce wood waste products and include, generally, wood chippers, shredders, and the like. Of course, this is not meant to be limiting in any manner and these systems may take on numerous configurations, and may be used for numerous purposes as is generally known within the art.
(33) Referring now to the drawings and to
(34) The power source 18 typically comprises an internal combustion engine and provides rotational energy to both the feed wheels (not shown) of the feed system 25 and the cutting disc/drum (not shown) of the cutting system 30. The engine 18 operatively couples the feed system 25 and cutting system 30 to cause rotation of the feed wheels (not shown) and the rotatable disc/drum (not shown). The engine 18 is typically operated such that the cutting disc/drum (not shown) rotates at a relatively high velocity, while the feed wheels (not shown) rotate relatively slowly. In operation, trees, brush, and other bulk wood products are fed into the infeed chute 24 and captured between, for example, opposed, rotating feed wheels (not shown) of the feed system 25 which feed, pull, or otherwise cause the bulk wood products to encounter the cutting disc/drum (not shown) of the cutting system 30. The cutting system then reduces the bulk wood products into chips which are expelled through discharge chute 42.
(35) Referring now to
(36) Referring now to
(37) Control system 50 also comprises a hydraulic valve 80 which is fluidly connected to the hydraulically powered feed system 25 and operatively disposed therein, whereby valve 80 is adapted to provide, permit, and allow hydraulic fluid to flow within the hydraulically powered feed system 25 and the associated one or more feed wheels 26 (not shown) so as to allow operation of the feed system 25 (e.g., feed wheels 26) when the actuator 60 is in the first position P1 and adapted to change, reverse, interrupt, divert, obstruct, or prevent hydraulic fluid flow when not in the first position (e.g., when in position P2), thereby changing, reversing, interrupting, preventing, or otherwise limiting normal operation of the feed system 25 (e.g., feed wheels 26). In one exemplary embodiment, valve 80 comprises a hydraulic directional control valve 82 which includes a mechanical input 84 for control thereof, in this particular example a shaft 86, whereby when the mechanical input 84 is in a first position 51 (as illustrated in
(38) In another exemplary embodiment and as illustrated by the hydraulic schematic of
(39) Control system 50 also comprises a linkage 70 which is operatively disposed such that the linkage 70 interlinks, connects, and transfers the movement of actuator 60 to the valve 80. In the embodiment illustrated, a rod 72 comprises a first end 74 which interacts with bar 61, and a second end 76 which interacts with valve 80 (e.g., a first end 88 of input 84, more particularly and in this example, a first end 88 of input shaft 86), thereby converting and transferring the rotational motion of bar 61 (via physically, mechanically, or otherwise directly interacting with first end 74) to a linear motion L1 which acts to provide a mechanical input to the valve 80 (via physically, mechanically, or otherwise directly interacting with second end 76). In this manner, a physical, mechanical, or otherwise direct mechanical connection is provided from actuator 60 to valve 80 and therebetween.
(40) Generally speaking the linkage 70 may be any link, linkage, connection, bar, shaft, rod or the like that is adapted for said connections. And in one embodiment as illustrated in
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(45) In another embodiment illustrated in
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(48) As detailed herein, the control system 50 of the present invention is completely mechanical in its operation and does not rely on electronic systems or electronic switches to accomplish its objectives. As such, complexity is reduced and reliability increased. Further yet, because of its wholly mechanical nature, the control system is able to be retrofitted to existing waste processing machines by simply interposing the control system 50 (to wit, actuator 60, linkage 70, and valve 80) in-between the existing chippers hydraulic feed system. In this manner a kit can be supplied for existing chipping systems which allows for the increased safety of such existing systems.
(49) The embodiment depicted operates independently of the feed wheel control lever 23 located on both sides and the top of the infeed hopper 24. As such, the bottom bump bar 61 is directly and mechanically connected to a (to shift) a hydraulic selector valve 80 once the bar 61 is pushed or activated, and upon activation (e.g., movement from a first to a second position) the valve 80 is moved or activated (e.g., movement from a first to a second position) and hydraulic fluid is diverted from its normal (in-use) fluid path, to a bypass path that flows (back) to the reservoir tank 110, thereby preventing the fluid from getting to (e.g., powering) the feed wheels and thereby preventing further operation of the feed wheel(s).
(50) Once the device is activated, one embodiment requires that the device be manually reset by way of a second actuator or switch 90 that will move or switch the selector valve 80 back to the feed position (e.g., first position) and the hydraulic fluid is then again supplied to the feed wheels and normal operation will return.
(51) It should be understood that waste processing system 10 may comprise any suitable waste reducing machinery such as the trailerable wood chipper as seen in
(52) It should be further understood that this disclosure describes the structure and operation of a safety and control system 50 with respect to a hydraulic system, however, other powering systems may also be utilized.
(53) While a linear sequence of events has been described, it should be appreciated that various modifications can be made therein and, as such, the system does not necessarily require a linear sequence of events. It is also to be understood that various modifications may be made to the system, it sequences, methods, orientations, and the like without departing from the inventive concept and that the description contained herein is merely a preferred embodiment and hence, not meant to be limiting unless stated otherwise.
(54) The solutions offered by the invention disclosed herein have thus been attained in an economical, practical, and facile manner. To wit, a novel control system which is cost effective, easily installed, strong, and aesthetically pleasing has been invented. While preferred embodiments and example configurations of the inventions have been herein illustrated, shown, and described, it is to be appreciated that various changes, rearrangements, and modifications may be made therein, without departing from the scope of the invention as defined by the claims. It is intended that the specific embodiments and configurations disclosed herein are illustrative of the preferred and best modes for practicing the invention, and should not be interpreted as limitations on the scope of the invention as defined by the claims, and it is to be appreciated that various changes, rearrangements, and modifications may be made therein, without departing from the scope of the invention as defined by the claims.