Powered devices, such as powered augers, can be usefully employed in a variety of operations. For example, in a vehicle for distributing salt for deicing, a powered auger in a rear trough of the vehicle can be configured to rotate, in order to process salt from a bed of the vehicle and distribute the salt onto a road surface.
To avoid adverse contacts with powered devices during active operation (or otherwise), it can be useful to enclose the powered devices to varying degrees. However, various devices, including augers, can require cleaning, repair, and other maintenance, which can require that an operator be able to physically access the devices. As such, it may be useful to enclose powered devices with gates that can be opened and closed. For example, for an auger for salt distribution, one or more panel-like gates can be provided at a rear of the relevant vehicle near the auger. In order to perform maintenance on the auger, an operator can move the gates to open orientations, thereby providing access to the auger for manual cleaning and repair. The gates can then be moved to closed orientations in order to block access to the auger during auger operation.
For various reasons, it can be useful to regulate operation of powered devices, such as powered augers, such that the devices do not receive power while an operator has access to the devices, including when one or more gates are open. Generally, interlock arrangements of various types can be useful for this purpose.
Some embodiments of the disclosure can be used with a vehicle with a frame, a power connection in communication with a motor, a powered device configured to be powered by the motor and at least partly enclosed by one or more gates, wherein a power conduit is configured to attach to the power connection to power the motor for powering of the powered device, and to detach from the power connection to prevent powering of the motor via the power conduit.
In one embodiment of the disclosure, a blocking feature and a first locking feature can be secured to an interlock member configured to slide between first and second interlock orientations. With the interlock member in the first interlock orientation, the blocking feature can prevent attachment of the power conduit to the power connection, such that the motor is not enabled to power the powered device, and the first locking feature can allow a first of the gates to open in order to provide access to the powered device. With the interlock member in the second interlock orientation, the blocking feature can allow attachment of the power conduit to the power connection, such that the motor is enabled to power the powered device, and the first locking feature can prevent the first gate from opening such that the first gate obstructs access to the powered device.
In another embodiment of the disclosure, an interlock body can include a cover plate, a blocking feature secured to the cover plate, first and second locking pins secured to the cover plate, and a first guide feature secured to the cover plate and engaging a second guide feature secured to the frame. The interlock body can move between first and second interlock orientations, as guided by the first and second guide features. With the interlock body in the first interlock orientation, the blocking feature can prevent attachment of the power conduit to the power connection, such that the motor is not enabled to power the powered device with power received via the power conduit, and the first and second locking pins can allow first and second of the gates, respectively, to open in order to provide access to the powered device. With the interlock body in the second interlock orientation, the blocking feature can allow attachment of the power conduit to the hydraulic connection, such that the motor is enabled to power the powered device with power received via the power conduit, and the first and second locking pins can allow the first and second gates, respectively, to open in order to provide access to the powered device.
In still another embodiment of the disclosure, an interlock body can include a cover plate, a blocking projection secured to and extending away from the cover plate, first and second locking pins secured to the cover plate, and a guide pin secured to the cover plate and extending at least partly through a guide hole in a guide feature secured to the frame. The interlock body can move between first and second interlock orientations, as guided by movement of the guide pin within the guide hole. With the interlock body in the first interlock orientation, the blocking projection can be in blocking alignment with the power connection to prevent attachment of the power conduit to the power connection, such that the motor is not enabled to power the rotation of the powered auger with power received via the power conduit, and the first and second locking pins can allow first and second of the gates, respectively, to open in order to provide access to the powered auger. With the interlock body in the second interlock orientation, the blocking projection can be out of blocking alignment with the power connection to allow attachment of the power conduit to the power connection, such that the motor is enabled to power the rotation of the powered auger with power received via the power conduit, and the first and second locking pins can physically obstruct the first and second gates, respectively, to prevent the first and second gates from opening, such that the first and second gates obstruct access to the powered auger.
The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of embodiments of the disclosure:
Before any embodiments of the invention are explained in detail, it is to be understood that the invention 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 various drawings. The invention 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. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Likewise, “at least one of A, B, and C,” and the like, is meant to indicate A, or B, or C, or any combination of A, B, and/or C. Unless specified or limited otherwise, the terms “mounted,” “secured,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings, including integral formation. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.
The following discussion is presented to enable a person skilled in the art to make and use embodiments of the invention. Various modifications to the illustrated embodiments will be readily apparent to those skilled in the art, and the generic principles herein can be applied to other embodiments and applications without departing from embodiments of the invention. Thus, embodiments of the invention are not intended to be limited to embodiments shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. The following detailed description is to be read with reference to the figures, in which like elements in different figures have like reference numerals. The figures, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of embodiments of the invention. Skilled artisans will recognize the examples provided herein have many useful alternatives and fall within the scope of embodiments of the invention.
As noted above, it may be useful to ensure that a powered device, such as an auger, does not receive power while an operator is physically accessing the device. The interlock arrangement disclosed herein can provide such a benefit, among others.
As discussed in greater detail below, some embodiments of the disclosed interlock arrangement can be used with a vehicle that includes a powered device, such as an auger, one or more gates for selectively allowing or obstructing access to the powered device, a motor for powering the powered device, a power connection, such a hydraulic quick-connect fitting, for delivering power to the motor, and a power conduit, such as a hydraulic line, for delivering power to the power connection. When the power conduit is connected to the power connection, power (e.g., hydraulic power) can flow to the motor via the power conduit, such that the motor can power the powered device. When the power conduit is disconnected from the power connection, power cannot flow to the motor via the power conduit, such that the motor cannot power the powered device (at least with power from the power conduit).
An interlock member, such as a contoured metal cover plate, can be configured to move between open and closed orientations, as guided by a guide feature, such as a bushing, gusset, or track secured to a frame of the vehicle. A blocking feature, such as a metal projection, can be secured to the interlock member, as can one or more locking features, such as metal locking pins.
When the interlock member is moved to the open orientation, the blocking feature can prevent connection of the power conduit to the power connection, such that power cannot flow to the motor via the power conduit and the power connection. For example, with the blocking feature configured as a projection, moving the interlock member to the open orientation can move the projection into blocking alignment with the power connection, such that the projection physically prevents attachment of the power conduit to the power connection. Similarly, when the power conduit is attached to the power connection, it may not be possible to move the interlock member into the open orientation because movement of the projection into the blocking alignment may be physically prevented by the power conduit (as attached to the power connection). In this way, when the interlock member (and the interlock arrangement, generally) is in the open orientation, the motor and the powered device cannot be powered via the power conduit. Further, when the interlock member (and the interlock arrangement, generally) is in the closed orientation, it may not be possible to move the interlock member to the open orientation without detaching the power conduit from the power connection.
Other features can also be secured to the interlock member, in order to regulate access to the powered device. For example, one or more locking features, such as locking pins, can also be secured to the interlock member. Each locking feature can be configured to prevent the opening of a respective gate for access to the powered device when the interlock member is in the closed orientation, while allowing the opening of the respective gate when the interlock member is in the open orientation. In this way, for example, the locking features can ensure that relevant gates obstruct access to the powered device when the powered device can receive power from the motor (e.g., when the power conduit is connected or can be connected to the power connection), while allowing the gates to open when the powered device cannot receive power from the motor (e.g., when the power conduit is not connected and cannot be connected to the power connection).
In some embodiments, the disclosed interlock arrangement can also regulate access to other areas of the relevant system. For example, where a transmission assembly, such as a chain drive, is used to transmit power from the motor to the powered device, a shield can be provided that at least partly covers the transmission assembly. When the interlock member is in the open orientation, the interlock arrangement can allow the shield to be opened, such that an operator can access the transmission assembly for cleaning, repair, or other maintenance. However, when the interlock member is in the closed orientation, the interlock arrangement can block the shield from opening, such that access to the transmission assembly may be prevented.
In the arrangement depicted in
An upper gate 28 for the auger 26 can be configured to pivot about a pivot 30, such that the upper gate 28 can be manually moved between various orientations. For example, the upper gate 28 can be moved to a upright, closed orientation, as depicted in
In some embodiments, latches 32 on the upper gate 28 can be configured to generally secure the upper gate 28 in a particular orientation. For example, with the upper gate 28 in the upright, closed orientation of
A lower gate 40 for the auger 26 can also be configured to pivot between various orientations. For example, the lower gate 40 can be moved to a closed orientation, as depicted in
Referring also to
The interlock body 50 can also include a blocking feature, such as a blocking projection 58, secured to the cover plate 52. The blocking projection 58 can be integrally formed with the cover plate 52, or can be otherwise secured to the cover plate 52 (e.g., via welding). As depicted, the blocking projection 58 includes a spacing portion 58a extending generally perpendicularly away from the front face 54, with a blocking portion 58b extending generally perpendicularly away from the spacing portion 58a and generally in parallel with the front face 54. Also as depicted, the blocking projection 58 is strengthened by the inclusion of a gusset 48 between the blocking projection 58 and the front face 54 of the cover plate 52. In other embodiments, other configurations for a blocking projection, or blocking feature generally, are possible.
The interlock body 50 can also include a guide feature, such as a guide pin 60, and various locking features, such as upper and lower locking pins 62 and 64. The guide pin 60 and locking pins 62 and 64 (or other guide or locking features) can be secured to the interlock body 50 in various ways. In the embodiment depicted, for example, the guide pin 60 and the lower locking pin 62 extend through and are secured (e.g., welded) to one of the side flanges 56, while the lower locking pin 62 and an extension 64a of the upper locking pin 64 extend through and are secured to the other of the side flanges 56. Also in the embodiment depicted, the guide pin 60 is integrally formed with the upper locking pin 64 in order to form a handle portion 66. In other embodiments, other handles (or no handles) can be included. Likewise, in other embodiments, the various guide and locking pins 60, 62, and 64 can be integrally formed with, or otherwise attached to, each other in various ways or not at all. A hole 68 for a cotter pin (not shown) or other device to secure the guide pin 60 with respect to the system 22 can also be included. In other embodiments, other configurations of the various guide and locking features are possible, including, for example, guide features for the interlock body 50 that are configured to engage corresponding guide tracks (or other guide features) secured to the salt-distributing system 22.
In some embodiments, an opening 70 can be provided in the front face 54 of the cover plate 52. This may be useful, for example, in order to allow an internal feature or device of the interlock arrangement 20 or salt-distributing system 22 to extend through the cover plate 52, while still allowing the interlock body 50 to move between different orientations. For example, the opening 70 can be configured to accommodate a portion of a gear box (not shown) or other transmission assembly of the salt-distributing system 22. A cover 72 can be provided for the opening 70, with the cover 72 configured to removably attach to the interlock body 50 in various ways (e.g., via screws, as depicted in
Referring again to
Still referring to
In some embodiments, other types of motors or power sources can be used. For example, a motor for the auger 26 can be configured as an electrical motor, which may operate using electrical power received from an electrical power conduit (e.g., configured similarly to the hydraulic power conduit 84). In such a case, an appropriate (e.g., alternative) power connection to the power connection 86 can be used. For example, a quick-connect (or other) electrical connection may be provided, such that the electrical motor can operate when the relevant power conduit is connected to the electrical connection, but cannot operate (at least with power from the power conduit) when the power conduit is disconnected from the electrical connection.
In some embodiments, a transmission assembly can be provided, in order to convert relatively high speed rotation from an output of a motor into relatively low speed rotation at the auger 26 (or otherwise modulate speed between motor and auger). In some embodiments, a shield can be provided for such a transmission assembly (or other components). For example, as can be seen in particular in
Referring also to
With the interlock arrangement 20 in the closed orientation depicted in
In order for an operator to access the auger 26, the chain drive 88, and other internal components, the operator can move the interlock arrangement 20 from the closed orientation depicted in
At the same time, the movement of the interlock body 50 to release the gates 40 and 28 and the shield 90 can also move the blocking portion 58b of the blocking projection 58 into blocking alignment with the power connection 86. Where, as depicted, the power conduit 84 (not shown in
In other embodiments, other configurations are possible.
In the arrangement depicted in
An upper gate 128 for the auger 126 can be configured to pivot about a pivot 130, such that the upper gate 128 can be manually moved between various orientations. For example, the upper gate 128 can be moved to a upright, closed orientation, as depicted in
A lower gate 140 for the auger 126 can also be configured to pivot between various orientations. For example, the lower gate 140 can be moved to a closed orientation, as depicted in
Referring also to
The interlock body 150 can also include a blocking feature, such as a blocking projection 158, secured to the cover plate 152. The blocking projection 158 can be integrally formed with the cover plate 152, or can be otherwise secured to the cover plate 152 (e.g., via welding). As depicted, the blocking projection 158 includes a spacing portion 158a extending generally perpendicularly away from the front face 154, with a blocking portion 158b extending generally perpendicularly away from the spacing portion 158a and generally in parallel with the front face 154. Also as depicted, the blocking projection 158 is strengthened by the inclusion of a gusset 148 between the blocking projection 158 and the front face 154 of the cover plate 152. Of note, the blocking projection 158 is configured to extend upwardly from the cover plate 152, in contrast to the downwardly extending blocking projection 58 (see, e.g.,
The interlock body 150 can also include a guide feature, such as a guide pin 160, and various locking features, such as upper and lower locking pins 162 and 164. The guide pin 160 and locking pins 162 and 164 (or other guide or locking features) can be secured to the interlock body 150 in various ways. In the embodiment depicted, for example, the guide pin 160 and the lower locking pin 162 extend through and are secured (e.g., welded) to one of the side flanges 156, while the lower locking pin 162 and an extension 164a of the upper locking pin 164 extend through and are secured to the other of the side flanges 156. Also in the embodiment depicted, the guide pin 160 is integrally formed with the upper locking pin 164 in order to form a handle portion 166. In other embodiments, other handles (or no handles) can be included. Likewise, in other embodiments, the various guide and locking pins 160, 162, and 164 can be integrally formed with, or otherwise attached to, each other in various ways or not at all. A hole 168 for a cotter pin (not shown) or other device to secure the guide pin 160 with respect to the system 122 can also be included. In other embodiments, other configurations of the various guide and locking features are possible, including, for example, guide features for the interlock body 150 that are configured to engage corresponding guide tracks (or other guide features) secured to the salt-distributing system 122.
Referring again to
Still referring to
In some embodiments, other types of motors or power sources can be used. For example, a motor for the auger 126 can be configured as an electrical motor, which may operate using electrical power received from an electrical power conduit (e.g., configured similarly to the hydraulic power conduit 184). In such a case, an appropriate (e.g., alternative) power connection to the power connection 186 can be used. For example, a quick-connect (or other) electrical connection may be provided, such that the electrical motor can operate when the relevant power conduit is connected to the electrical connection, but cannot operate (at least with power from the power conduit) when the power conduit is disconnected from the electrical connection.
In the embodiment depicted in
When the interlock arrangement 120 is in a closed orientation, the interlock body 150 can prevent the upper and lower gates 128 and 140 and the shield 190 from opening, such that access to the trough 124 and the auger 126 (not shown in
In order for an operator to access the auger 126 and other internal components, the operator can move the interlock arrangement 120 from the closed orientation depicted in
At the same time, the movement of the interlock body 150 to release the gates 140 and 128 and the shield 190 can also move the blocking portion 158b of the blocking projection 158 into blocking alignment with the power connection 186. Where, as depicted, the power conduit 184 (not shown in
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.