公开(公告)号：US3984010A

公开(公告)日：1976-10-05

申请号：US613200

申请日：1975-09-15

申请人： Eugene L. Woloveke ,  Marvin M. Thompson

发明人： Eugene L. Woloveke ,  Marvin M. Thompson

IPC分类号： B65G57/28

CPC分类号： B65G57/28

摘要： A truss stacking apparatus is disclosed which includes means for lifting successive horizontally disposed trusses off of a conveyor and for stacking the trusses in a generally upright orientation on a stacking skid. Guide means are disposed in the conveyor path for contacting the angularly arranged top chords of successive trusses to effect lateral shifting of the trusses toward lifting positions in which the trusses are lifted from the conveyor onto the skid. SUBACKGROUND OF THE INVENTION1. Field of the InventionThis invention relates generally to handling equipment for wooden structural truss members, and more particularly to apparatus for raising horizontally disposed truss members off of a conveyor and for stacking the trusses in a generally upright position on a stacking skid.2. Description of the Prior ArtPrefabricated wood building components, such as roof and floor trusses, are used extensively in the building industry today, particularly for residential construction. Normally, a roof truss includes an elongate base chord to which a plurality of angularly arranged top chords are attached. In one typical truss formation, the base chord is connected at each end with an angularly arranged top chord.Such trusses are fabricated in varying shapes and sizes and similar trusses are then stored together prior to shipping. Typically, such trusses are fabricated at one station, and then successive ones of such trusses are horizontally disposed on a conveyor which transports them to a stacking station. At the stacking station, these trusses are successively lifted, either manually or automatically, to a generally upright position.As evidenced by the patents to Adams U.S. Pat. No. 3,517,834 and Jureit et al. U.S. Pat. No. 3,811,578, various automatic stop and lift initiating devices have been proposed to properly position the truss on the conveyor for subsequent lifting with respect to the stacking station. In Jureit et al., a bumper plate-lift switch combination is disposed in the truss path on the conveyor downstream of the stacking station. A truss disposed on the conveyor is conveyed downstream with its base chord extending in the direction of movement of the conveyor. The downstream end of the truss abuts the bumper plate and activates the lift switch to effect lifting. If the truss has a tail, the tail end of the downstream and top chord will abut the bumper plate. If the truss has no tail, the truss portion where the downstream end top chord and base chord join will abut the bumper plate. If it is desired to stack smilarly sized ones of both types of trusses on the same skid, either the bumper plate or the stacking skid for receiving stacked trusses must be separately positioned for each type of truss stacked, or else the stacked trusses will be misaligned.SUMMARY OF THE INVENTIONThe present invention was developed to provide an improved stacking apparatus which includes means for positioning similarly sized trusses, both with and without tails, in a lifting position for stacking on a skid member. The stacking apparatus is so designed that the positioning means need not require separate adjustment when stacking similarly sized trusses with tails and without tails.Accordingly, a primary object of the present inventions is to provide a stacking apparatus for stacking trusses of the type having a base chord and at least one top chord angularly arranged at an acute angle relative to the base chord, including a stacking station having a skid upon which said trusses are successively stacked in a generally vertical orientation upon their base chords, conveyor means for horizontally transporting successive trusses toward the stacking station, said trusses oriented on the conveyor with their base chords generally adjacent one side of the conveyor. Pivotable stacking arms are provided at the stacking station for raising successive trusses from the conveyor to a position above the stacking skid. The stacking arms are mounted for pivotal movement about an axis disposed on one side of the conveyor and generally parallel with the axis of the conveyor, said stacking arms being pivotable between a lowered position beneath the conveyor and an elevated position adjacent the stacking skid. Positioning means are provided for positioning successive trusses on the conveyor relative to the stacking arms prior to engagement thereby. The positioning means include a first stationary guide arranged in the path of travel of a truss approaching the stacking station to engage the top chord thereof and to laterally displace the truss relative to the conveyor in the direction of the pivot axis of the stacking arms. The positioning means further includes a second stationary guide arranged adjacent the stacking arms for engaging the base chord of the laterally displaced truss, which second guide cooperates with the first guide to orient the truss in a stacking position in which the truss base chord is parallel with and adjacent the stacking arm pivot axis. Consequently, when the truss is in its stacking position, the stacking arms may be operable to raise the horizontal truss from the conveyor to a generally vertical position relative to the stacking skid.

公开(公告)号：US4145940A

公开(公告)日：1979-03-27

申请号：US872501

申请日：1978-01-26

申请人： Eugene L. Woloveke ,  Marvin M. Thompson

发明人： Eugene L. Woloveke ,  Marvin M. Thompson

IPC分类号： B23Q11/00 ,  B27B5/38 ,  F16D49/16 ,  F16D65/14 ,  F16D65/16 ,  F16D65/46

CPC分类号： B23Q11/0092 ,  B27B5/38 ,  F16D49/16 ,  F16D65/16 ,  F16D65/46 ,  F16D2121/02 ,  Y10T83/099 ,  Y10T83/9379

摘要： A brake apparatus is disclosed for a motor driven saw blade, and includes a hub threadably attached at one end along its centerline axis to a drive motor, and attached to a saw blade via a flange formed on the other end of said hub, said hub having the shape of a cylinder. Also included are two brake shoes, one situated on each side of the hub, with each shoe including a brake pad portion thereon, such that when said brake shoes are actuated by brake actuation means operatively connected to said brake shoes, said shoes are caused to squeeze together to thereby brake rotative movement of said hub and therewith said saw blade. Means are also provided for adjusting the extent of brake shoe displacement during actuation as needed due to brake pad wear.

摘要翻译： 公开了一种用于马达驱动的锯片的制动装置，并且包括一个轮毂，其一端沿着其中心线轴线连接到驱动马达，并通过形成在所述轮毂的另一端上的凸缘附接到锯片，所述轮毂 具有圆柱体的形状。 还包括两个制动蹄，一个位于轮毂的每一侧，每个蹄在其上包括一个制动蹄片部分，使得当所述制动蹄由可操作地连接到所述制动蹄的制动器致动装置致动时， 挤压在一起，从而制动所述轮毂和所述锯片的旋转运动。 还提供了用于在由于制动片磨损而需要时调节制动蹄位移程度的装置。