CA1290727C - Self-loading truck and tilt bed therefor - Google Patents
Self-loading truck and tilt bed thereforInfo
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- CA1290727C CA1290727C CA000591441A CA591441A CA1290727C CA 1290727 C CA1290727 C CA 1290727C CA 000591441 A CA000591441 A CA 000591441A CA 591441 A CA591441 A CA 591441A CA 1290727 C CA1290727 C CA 1290727C
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Abstract
ABSTRACT OF THE DISCLOSURE
A remote controlled self-loading truck having a tilt bed equipped with a bed mounted hoist and having fold-down sides, and to such a tilt bed for mounting on standard truck chassis.
Elevated hoist means are supported on the tiltable bed adja-cent to its forward end for movement with the bed. The hoist means includes an elongated generally horizontal rearwardly extending rotatably supported boom. Tail roller means are journaled for rotation at the rearward edge of the flat bed.
Hinged side gates are provided on opposite sides of the flat bed. Remotely manually controlled power means are provided for raising and lowering the bed relative to the vehicle frame, for rotating the hoist boom, and for operating the hoist winch.
A remote controlled self-loading truck having a tilt bed equipped with a bed mounted hoist and having fold-down sides, and to such a tilt bed for mounting on standard truck chassis.
Elevated hoist means are supported on the tiltable bed adja-cent to its forward end for movement with the bed. The hoist means includes an elongated generally horizontal rearwardly extending rotatably supported boom. Tail roller means are journaled for rotation at the rearward edge of the flat bed.
Hinged side gates are provided on opposite sides of the flat bed. Remotely manually controlled power means are provided for raising and lowering the bed relative to the vehicle frame, for rotating the hoist boom, and for operating the hoist winch.
Description
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
This invention is directed to a remote controlled self-loadiny truck having a til-t bed equipped with a bed mounted hoist and having fold-down sides, and to such a tilt bed for mounting on standard truck chassis, or on the trailer chassis of standard semi-tractor-truc~ units. The tilt bed and bed mounted hoist are especially adapted to rear end loading for transport of elongated material such as loys, structural iron, piping, and the like, which is ordinarily difficult to load.
Because the hoist functions through a pivoting loader boom, other materials can be loaded over the side. Although not essential, by the addition of rear ramps,/such as palletized materials, skid mounted equipment, wheeled equipment, and the like, may be more readily loaded from the rear.
THE PRIOR ~RT
McIntyre U. S. Patent No. 4,318,658 shows one form of tilting bed vehicle having a bed mounted winch. However, this vehicle is for rear loading only and is primarily desi~ned so that the rear end of the bed can be fully lowered onto the ground surface without resorting either to an impractical loading angle or an excessively rearwardly extending bed, with their attendant problems~ Extensive modification of the existing frame or chassis of the supporting vehicle is requir-ed so as to provide relatively pivotable front and rear frame sections.
Milner U. S. Patent No. 2,351,829 shows a tiltable semi-trailer bed with associated winch means. ~owever, the ~inch mechanism remains on the fixed portion of the trailer frame.
SUMMARY OF THE INVENTION
Broadly stated, the present invention comprises a vehicle having a frame supported on front and rear axles which are 3L~9V7r~7 supported on wheels. A tiltable flat bed is pivotally supported adjacent its rearward end. Lift means for the~ bed are pivotally secured at one end to the vehicle frame and at the other end adjacent to the forward end of the bed. Elevated ilOiSt means are supported on the tiltahle bed adjacent to its forward end for movement with -the bed. The hoist means includes a vertical standard rota-tably supported for limited rotation about a ver.ical axis. An elongated boom extends rearwardl~
from the top of the vertical standard and is connected for rotation therewith. The boom is spaced above the deck of the flat bed. Winch means are mounted on the vertical standard for rotation with -the boom. Transverse tail roller means are journaled for rotation at the rearward edge of the flat bed.
Longitudinally extending hinged side gates on opposite sides of the flat bed are provided with locking means for securing the side walls in upright position. The side gates may be lowered for side loading. Remotely manually controlled power means are provided for pivoting the bed relative to the vehicle frame, for raising and lowering~ for rotating the hoist boom, and for operat--ing the winch~ The invention also comprises the tilt bed for use in conjunction with standard vehicles.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is illustrated in the accompanying draw-ings in which:
Figure 1 is a left side elevation of a truck equipped with a tilt bed and hoist means according to the present invention;
Figure 2 is a right side elevation of the tilt bed and hoist means;
Figure 3 is a top plan view thereof;
Figure ~ is a front end elevation thereof;
Figure 5 is a fragmentary vertical section on an ~3~ 7 enlarged scale showincJ details of the hoist boom mount;
Figure 6 is a fragmentary transverse vertical section on the line 6-6 of Figure 3 showiny details of the mechanism for lockin~ the tiltable bed to the vehicle frame;
Figure 7 is a left end view thereof;
Figure 7A is a right end view thereof;
Figure 8 is a schematic diagram vf the hydraulic system by which tilting of the bed, rotation of the hoist boom, and operation of the winch are controlled;
Figure 9 is a schematic diagram of the electrical system by which operation of the hydraulic system is remotely con-trolled; and Figure 10 is a sec-tion, on an enlarged scale, on the line 10-10 of Figure 2 and in the direction of the arrows showing hinge and locking means for the bed side gates.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, and particularly to Flgure 1, there is shown one form of vehicle, truck 10, on which the tiltable bed of the present invention may be mounted. As is conventional,jtruck 10 includes a generally rectangular frame or chassis 11 supported on front and rear axles 12 and 13, each of which is in turn supported by front and rear wheels 14 and 15, respectively. A motor housing 16 is mounted on the forward end of the frame above the front axle and a driver's cab 17 is located rearward of the motor compartment. A ~iltable flat bed, indicated generally at 18, is adapted to be supported by vehicle frame 11 and is pivotally attached to the rearward end thereof at 19. Conventional hoist or lift means 20 are pivotally attached at one end to the vehicle frame intermediate of its ends and at the other end adjacent to the forward end of the tiltable bed 18.
~3LX~7~
As seen in F'igures 2 and 3, tiltable bed 18 comprises a rectangular frame including left and right longitudinal side beams 21 and Z2 and rearward and forward transverse beams 23 and 24, respectively. Intermedia-te longitudinal beams 25 and inter-mediate cross beams 26 strengthen and reinforce the bed frame.
The frame is covered on its top surface with decking 27, such as steel plate.
~ s seen in Figures 2, 3 and 4, a forward wall or bulkhead, indicated generally at 28, is supported by and extends verti-cally upward from forward cross beam 24 so as to be immediately rearward of the truck cab when the bed is in its lowered posi-tion. Bulkhead 28 comprises a frame including upper horizontal cross beam 29 suppor-ted by left and right vertical members 30 and 31, respectively. Intermediate vertical supports 32 and cross beams 33 reinforce and strengthen the bulkhëad frame.
Paneling 34, such as steel plate, preferably covers the bulkhead frame.
~ vertical standard 35 for hoist means hereinafter des-cribed is supported in the upper central portion of the bulk-head frame. Hoist standard 35 is supported on thrust bearing 36 (Figure 5) and extends through sleeve 37 and ring ball bear-ing 36A mounted in cross beam 29. A bracket 38 rigidly secured to the uppermost end of hoist standarcl 35 supports hoist boom 390 A bracke-t 40 rigidly secured to a collar ~l at the lower-most end of the boom standard supports one end of a strut 42, the opposite end of which is attached at 43 -to the hoist boom 39. ~oom 39 and strut 42 may be of any standard construction.
If desired they may be telescoping for extension and retraction.
Limited rotation of the hoist boom 39 is accomplished through a pair of upper and lower boom drive sprockets 44 and 45, respectively, rigidly mounted on the uppermost end of hoist standard 35 on the side opposite from bracket 38.
~Z90~Z7 Desirably the boom pivots about 160. To ro~ate the boom in one direction, one end of a sprocket roller chain 46 is secured to one end of boom drive sprocket ~4 and extends partially around the sprocket. The opposite end of chain 46 is secured to the end of piston 47 of hydraulic cylinder 48 which is supported in bracket 49 at the right hand end of bulkhead cross beam 29.
To rotate the boom in the opposite direction, one end of a further drive chain 50 is secured to the opposite end of drive sprocket 45 to extend partially around that sprocket.
The opposite end of chain 50 is connected to piston 51 of cylinder 52 supported in bracket 53 at the left hand end of bulkhead cross beam 29. Causing the piston of one cylinder to retract exerts force upon one chain which is transmitted to the corresponding sprocket to partially unwind the chain from that sprocket while at the same time the piston of the opposite cylinder is extended and the chain is wrapped around the other drive sprocket, with resulting rotation of standard 35 and boom 39. -Hoist boom 39 extends rearwardly from bulkhead 28,generally horizontally and preferably sligh-tly angularly upward-ly. The boom is elevated above the bed deck to permit working space below. A goose-nec]~ type boom tip or extension 54 at the outer extremity of the boom arm supports a pivotally suspendL-ed pulley block 55. A standard winch 56 is supported at the top end of the hoist standard 35 for rotation therewith. Winch 56 is preferably a 3000 pound variable speed planetary hydraulic winch driven by an hydraulic motor 57. A wire rope or cable 58 extends from winch 56 over the tcp of boom 39 to pulley block 55. Tow line pulls of 30 and 60 feet per minute are pre-ferred for most purposes. ~ hook 5~ or similar grappling means is carried by the end of cable 58.
~s seen in Figures 2 and 3, to facili-tate loading of lon~
~5--lX9V727 rigid objects such as logs, pipe, etc., an elonyated tail roller 60 is journaled in brackets 61 at opposite sides of the tilt bed immediately adjacen~ to the rear edye o~ the ~ed. Such long stiff objects enyaye the surEace of the roller and cause it to rotate, easiny the objects on-to the bed as they are pulled by the winch and tow line. IJsing a 3000 pound winch, 5000 to 6000 pound logs may be loaded over the tail roller. Desirably, roller 60 is provided wi-th one or more sets of longitudinally aligned slots 62 adapted to engage forward hook-like members of inclined ramps to facilitate loading of wheeled vehicles and skid mounted equipment, and the like, onto the bed in its normal level position.
Tilt bed 18 is provided with forward and rearward side walls or gates 63 and 64, respectively, hingedly secured to the bed frame on the opposite sides thereof. Each side gate includes a plurality of parallel spaced apart vertical bar mernbers 65 and horizontal members 66 forming a rigid frame faced on one side with paneling 67, such as steel plate. As best seen in conjunction with Figure 10, the side gates 63 and 64 are hingedly mounted on pins or rods 68 held in brackets 69 attached to the longitudinal side beams 21 and 22 of the tilt bed frame. The bottommost end of each vertical side gate member 65 is provided with a slot 70 which engages pin or rod 68. The bottommost ends of members 65 are provided with an arcuate cam-like surface 71 which extends below the bottommost edye of side gate paneling 67.
When the side gates are in upright position, the top ends o slots 70 engage pins or rods 68. The bottommost end of paneling 67 bears against and engages the outermost edge of the tilt bed side beams 21 and 22 to maintain the side gates in upright locked position. The side gates may be readily lowered by manually liting them to disengage the top encls ~X~(~7~7 of slots 70 from pins or rods 68. ~I~he cam-like arcuate edges 71 of the side gate vertical members 65 engage the edge of the bed side beam permitting the side yate to be rotated out~7ardl~
and downwardly to come to rest with the ol~posite ends of slots 70 enyaying pins or rods 68 and suspending the side gates in vertical position below the bed deck to facilitate side load-ing onto the bed, Cut-outs 72 and 73 in the paneliny 67 oE the rearmost side gates 64, adjacent to the horiæontal frame members 66, pro-vide aircraft style s-teps to facilitate climbing onto the bed when the side ga-te is in its lowered position. The rearward side gates 63 are preferably spaced forward from the bulkhead 28 a sufficient distance to permit entry by a workman when the rear side gates are in raised position. A ladder 74 is prefer-ably provided for this purpose.
An elevated platform or basket 75 extends forwardly from the top eclge of bulkhead 28 and partially overlies the truck cab 17 when the tilt bed is in its lowered over-the-road posi-tion. Basket 75 may be used for the storage of supplies and equipment. A plurality of holes 76 are provided around the periphery to permit the use of Bungy cords or similar fasten-ing members to hold stored material in place. The bottom wall 77 of the basket/carrier preferably is formed of expanded metal for drainage, to prevent the accumulation of rain water or the like.
~ trailer hitch member 78 extends downwardly from the tiltable bed 18 adjacent the center of its rearward end and ser~es, for example, as a mount for tail lights, brake lights, back-up lights, or the like; as well as a mounting for a trailer hitch, or the like.
The tilt bed is provided with a self-engaging latch mechanism, as shown in Figures 6, 7 ancl 7A. A pair of la~ch - ~ 2907Z7 hoo~s 80 and 81 are welded or otherwise rigidly secured to a crank arm 82 which is journaled for limited rotation in tne bed longitudinal frame members 25 on the underside of the bed and bracket 83 adjacent the left side of the bed. Crank arm 82 terminates in a handle 84. Latch hooks 80 and 81 are spaced so as to extend downwardly from the bed outside of but closely adjacent to the side edges of truck chassis frame 11.
The latch hooks engage latch pins formed b~y the opposite ends of a latch rod 85 mounted in chassis frame 11 and extending out on opposite sides of the chassis frame. The crank arm is spring biased in the locked position, as by means of spring 86. The face edges 87 of latch hooks 80 and 81 are tapered. When the bed is lowered, the tapered edges of the hooks bear against the latch pins and the downward movement of the bed causes the latch hooks to engage rod 85 and lock the bed in place. When it is desired to tilt the bed, downward force on handle 84 causes the latch hooks to become disengaged to free the bed for lifting.
Operation of the bed lift and winch, and rotation of the hoist boom is by means of a conventional hydraulic system.
The system may be manually controlled. Preferably, howev~r, operation of the system is remotely controlled from a hand-held panel connected through a hard wire umbilical or wireless con-nection. As seen in Figures 8 and '~, the systems may be operated from a remote hand-held control panel 88. Control panel 88 contains a plurality of push buttons which control up and down movement of the tilt bed, in and out movement of the winch cable, and right and left rotation of the hoist boom. Pre-ferably the winch drive is two-speed and a separate fast-slow toggle switch is provided for fast operation of the winch.
Depressing one of the push buttons triggers one of a series of relays Rl through X7, which in turn actuate solenoids Sl through S8 controlling valves regulating flow of pressuri2ed ~X'3(3'7'~7 fluid to hydraulic cylinders 20, ~8 and 52 and hydraulic motor 58, in the conventional manner.
Remote control of the bed tilt, hoist rotation and ~7inch functions permits one person operation for safet~ and effi-ciency. One person and one piece of equipment can load, carry and dump heavy material and equipment.
It is apparent that many modifications and variations of this invention as hereinbefore set forth may be made without departing from the spirit and scope thereof.
The specific embodiments described are given by way of example only and the invention is limited only by the terms of -the appended claims.
FIELD OF THE INVENTION
This invention is directed to a remote controlled self-loadiny truck having a til-t bed equipped with a bed mounted hoist and having fold-down sides, and to such a tilt bed for mounting on standard truck chassis, or on the trailer chassis of standard semi-tractor-truc~ units. The tilt bed and bed mounted hoist are especially adapted to rear end loading for transport of elongated material such as loys, structural iron, piping, and the like, which is ordinarily difficult to load.
Because the hoist functions through a pivoting loader boom, other materials can be loaded over the side. Although not essential, by the addition of rear ramps,/such as palletized materials, skid mounted equipment, wheeled equipment, and the like, may be more readily loaded from the rear.
THE PRIOR ~RT
McIntyre U. S. Patent No. 4,318,658 shows one form of tilting bed vehicle having a bed mounted winch. However, this vehicle is for rear loading only and is primarily desi~ned so that the rear end of the bed can be fully lowered onto the ground surface without resorting either to an impractical loading angle or an excessively rearwardly extending bed, with their attendant problems~ Extensive modification of the existing frame or chassis of the supporting vehicle is requir-ed so as to provide relatively pivotable front and rear frame sections.
Milner U. S. Patent No. 2,351,829 shows a tiltable semi-trailer bed with associated winch means. ~owever, the ~inch mechanism remains on the fixed portion of the trailer frame.
SUMMARY OF THE INVENTION
Broadly stated, the present invention comprises a vehicle having a frame supported on front and rear axles which are 3L~9V7r~7 supported on wheels. A tiltable flat bed is pivotally supported adjacent its rearward end. Lift means for the~ bed are pivotally secured at one end to the vehicle frame and at the other end adjacent to the forward end of the bed. Elevated ilOiSt means are supported on the tiltahle bed adjacent to its forward end for movement with -the bed. The hoist means includes a vertical standard rota-tably supported for limited rotation about a ver.ical axis. An elongated boom extends rearwardl~
from the top of the vertical standard and is connected for rotation therewith. The boom is spaced above the deck of the flat bed. Winch means are mounted on the vertical standard for rotation with -the boom. Transverse tail roller means are journaled for rotation at the rearward edge of the flat bed.
Longitudinally extending hinged side gates on opposite sides of the flat bed are provided with locking means for securing the side walls in upright position. The side gates may be lowered for side loading. Remotely manually controlled power means are provided for pivoting the bed relative to the vehicle frame, for raising and lowering~ for rotating the hoist boom, and for operat--ing the winch~ The invention also comprises the tilt bed for use in conjunction with standard vehicles.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is illustrated in the accompanying draw-ings in which:
Figure 1 is a left side elevation of a truck equipped with a tilt bed and hoist means according to the present invention;
Figure 2 is a right side elevation of the tilt bed and hoist means;
Figure 3 is a top plan view thereof;
Figure ~ is a front end elevation thereof;
Figure 5 is a fragmentary vertical section on an ~3~ 7 enlarged scale showincJ details of the hoist boom mount;
Figure 6 is a fragmentary transverse vertical section on the line 6-6 of Figure 3 showiny details of the mechanism for lockin~ the tiltable bed to the vehicle frame;
Figure 7 is a left end view thereof;
Figure 7A is a right end view thereof;
Figure 8 is a schematic diagram vf the hydraulic system by which tilting of the bed, rotation of the hoist boom, and operation of the winch are controlled;
Figure 9 is a schematic diagram of the electrical system by which operation of the hydraulic system is remotely con-trolled; and Figure 10 is a sec-tion, on an enlarged scale, on the line 10-10 of Figure 2 and in the direction of the arrows showing hinge and locking means for the bed side gates.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, and particularly to Flgure 1, there is shown one form of vehicle, truck 10, on which the tiltable bed of the present invention may be mounted. As is conventional,jtruck 10 includes a generally rectangular frame or chassis 11 supported on front and rear axles 12 and 13, each of which is in turn supported by front and rear wheels 14 and 15, respectively. A motor housing 16 is mounted on the forward end of the frame above the front axle and a driver's cab 17 is located rearward of the motor compartment. A ~iltable flat bed, indicated generally at 18, is adapted to be supported by vehicle frame 11 and is pivotally attached to the rearward end thereof at 19. Conventional hoist or lift means 20 are pivotally attached at one end to the vehicle frame intermediate of its ends and at the other end adjacent to the forward end of the tiltable bed 18.
~3LX~7~
As seen in F'igures 2 and 3, tiltable bed 18 comprises a rectangular frame including left and right longitudinal side beams 21 and Z2 and rearward and forward transverse beams 23 and 24, respectively. Intermedia-te longitudinal beams 25 and inter-mediate cross beams 26 strengthen and reinforce the bed frame.
The frame is covered on its top surface with decking 27, such as steel plate.
~ s seen in Figures 2, 3 and 4, a forward wall or bulkhead, indicated generally at 28, is supported by and extends verti-cally upward from forward cross beam 24 so as to be immediately rearward of the truck cab when the bed is in its lowered posi-tion. Bulkhead 28 comprises a frame including upper horizontal cross beam 29 suppor-ted by left and right vertical members 30 and 31, respectively. Intermediate vertical supports 32 and cross beams 33 reinforce and strengthen the bulkhëad frame.
Paneling 34, such as steel plate, preferably covers the bulkhead frame.
~ vertical standard 35 for hoist means hereinafter des-cribed is supported in the upper central portion of the bulk-head frame. Hoist standard 35 is supported on thrust bearing 36 (Figure 5) and extends through sleeve 37 and ring ball bear-ing 36A mounted in cross beam 29. A bracket 38 rigidly secured to the uppermost end of hoist standarcl 35 supports hoist boom 390 A bracke-t 40 rigidly secured to a collar ~l at the lower-most end of the boom standard supports one end of a strut 42, the opposite end of which is attached at 43 -to the hoist boom 39. ~oom 39 and strut 42 may be of any standard construction.
If desired they may be telescoping for extension and retraction.
Limited rotation of the hoist boom 39 is accomplished through a pair of upper and lower boom drive sprockets 44 and 45, respectively, rigidly mounted on the uppermost end of hoist standard 35 on the side opposite from bracket 38.
~Z90~Z7 Desirably the boom pivots about 160. To ro~ate the boom in one direction, one end of a sprocket roller chain 46 is secured to one end of boom drive sprocket ~4 and extends partially around the sprocket. The opposite end of chain 46 is secured to the end of piston 47 of hydraulic cylinder 48 which is supported in bracket 49 at the right hand end of bulkhead cross beam 29.
To rotate the boom in the opposite direction, one end of a further drive chain 50 is secured to the opposite end of drive sprocket 45 to extend partially around that sprocket.
The opposite end of chain 50 is connected to piston 51 of cylinder 52 supported in bracket 53 at the left hand end of bulkhead cross beam 29. Causing the piston of one cylinder to retract exerts force upon one chain which is transmitted to the corresponding sprocket to partially unwind the chain from that sprocket while at the same time the piston of the opposite cylinder is extended and the chain is wrapped around the other drive sprocket, with resulting rotation of standard 35 and boom 39. -Hoist boom 39 extends rearwardly from bulkhead 28,generally horizontally and preferably sligh-tly angularly upward-ly. The boom is elevated above the bed deck to permit working space below. A goose-nec]~ type boom tip or extension 54 at the outer extremity of the boom arm supports a pivotally suspendL-ed pulley block 55. A standard winch 56 is supported at the top end of the hoist standard 35 for rotation therewith. Winch 56 is preferably a 3000 pound variable speed planetary hydraulic winch driven by an hydraulic motor 57. A wire rope or cable 58 extends from winch 56 over the tcp of boom 39 to pulley block 55. Tow line pulls of 30 and 60 feet per minute are pre-ferred for most purposes. ~ hook 5~ or similar grappling means is carried by the end of cable 58.
~s seen in Figures 2 and 3, to facili-tate loading of lon~
~5--lX9V727 rigid objects such as logs, pipe, etc., an elonyated tail roller 60 is journaled in brackets 61 at opposite sides of the tilt bed immediately adjacen~ to the rear edye o~ the ~ed. Such long stiff objects enyaye the surEace of the roller and cause it to rotate, easiny the objects on-to the bed as they are pulled by the winch and tow line. IJsing a 3000 pound winch, 5000 to 6000 pound logs may be loaded over the tail roller. Desirably, roller 60 is provided wi-th one or more sets of longitudinally aligned slots 62 adapted to engage forward hook-like members of inclined ramps to facilitate loading of wheeled vehicles and skid mounted equipment, and the like, onto the bed in its normal level position.
Tilt bed 18 is provided with forward and rearward side walls or gates 63 and 64, respectively, hingedly secured to the bed frame on the opposite sides thereof. Each side gate includes a plurality of parallel spaced apart vertical bar mernbers 65 and horizontal members 66 forming a rigid frame faced on one side with paneling 67, such as steel plate. As best seen in conjunction with Figure 10, the side gates 63 and 64 are hingedly mounted on pins or rods 68 held in brackets 69 attached to the longitudinal side beams 21 and 22 of the tilt bed frame. The bottommost end of each vertical side gate member 65 is provided with a slot 70 which engages pin or rod 68. The bottommost ends of members 65 are provided with an arcuate cam-like surface 71 which extends below the bottommost edye of side gate paneling 67.
When the side gates are in upright position, the top ends o slots 70 engage pins or rods 68. The bottommost end of paneling 67 bears against and engages the outermost edge of the tilt bed side beams 21 and 22 to maintain the side gates in upright locked position. The side gates may be readily lowered by manually liting them to disengage the top encls ~X~(~7~7 of slots 70 from pins or rods 68. ~I~he cam-like arcuate edges 71 of the side gate vertical members 65 engage the edge of the bed side beam permitting the side yate to be rotated out~7ardl~
and downwardly to come to rest with the ol~posite ends of slots 70 enyaying pins or rods 68 and suspending the side gates in vertical position below the bed deck to facilitate side load-ing onto the bed, Cut-outs 72 and 73 in the paneliny 67 oE the rearmost side gates 64, adjacent to the horiæontal frame members 66, pro-vide aircraft style s-teps to facilitate climbing onto the bed when the side ga-te is in its lowered position. The rearward side gates 63 are preferably spaced forward from the bulkhead 28 a sufficient distance to permit entry by a workman when the rear side gates are in raised position. A ladder 74 is prefer-ably provided for this purpose.
An elevated platform or basket 75 extends forwardly from the top eclge of bulkhead 28 and partially overlies the truck cab 17 when the tilt bed is in its lowered over-the-road posi-tion. Basket 75 may be used for the storage of supplies and equipment. A plurality of holes 76 are provided around the periphery to permit the use of Bungy cords or similar fasten-ing members to hold stored material in place. The bottom wall 77 of the basket/carrier preferably is formed of expanded metal for drainage, to prevent the accumulation of rain water or the like.
~ trailer hitch member 78 extends downwardly from the tiltable bed 18 adjacent the center of its rearward end and ser~es, for example, as a mount for tail lights, brake lights, back-up lights, or the like; as well as a mounting for a trailer hitch, or the like.
The tilt bed is provided with a self-engaging latch mechanism, as shown in Figures 6, 7 ancl 7A. A pair of la~ch - ~ 2907Z7 hoo~s 80 and 81 are welded or otherwise rigidly secured to a crank arm 82 which is journaled for limited rotation in tne bed longitudinal frame members 25 on the underside of the bed and bracket 83 adjacent the left side of the bed. Crank arm 82 terminates in a handle 84. Latch hooks 80 and 81 are spaced so as to extend downwardly from the bed outside of but closely adjacent to the side edges of truck chassis frame 11.
The latch hooks engage latch pins formed b~y the opposite ends of a latch rod 85 mounted in chassis frame 11 and extending out on opposite sides of the chassis frame. The crank arm is spring biased in the locked position, as by means of spring 86. The face edges 87 of latch hooks 80 and 81 are tapered. When the bed is lowered, the tapered edges of the hooks bear against the latch pins and the downward movement of the bed causes the latch hooks to engage rod 85 and lock the bed in place. When it is desired to tilt the bed, downward force on handle 84 causes the latch hooks to become disengaged to free the bed for lifting.
Operation of the bed lift and winch, and rotation of the hoist boom is by means of a conventional hydraulic system.
The system may be manually controlled. Preferably, howev~r, operation of the system is remotely controlled from a hand-held panel connected through a hard wire umbilical or wireless con-nection. As seen in Figures 8 and '~, the systems may be operated from a remote hand-held control panel 88. Control panel 88 contains a plurality of push buttons which control up and down movement of the tilt bed, in and out movement of the winch cable, and right and left rotation of the hoist boom. Pre-ferably the winch drive is two-speed and a separate fast-slow toggle switch is provided for fast operation of the winch.
Depressing one of the push buttons triggers one of a series of relays Rl through X7, which in turn actuate solenoids Sl through S8 controlling valves regulating flow of pressuri2ed ~X'3(3'7'~7 fluid to hydraulic cylinders 20, ~8 and 52 and hydraulic motor 58, in the conventional manner.
Remote control of the bed tilt, hoist rotation and ~7inch functions permits one person operation for safet~ and effi-ciency. One person and one piece of equipment can load, carry and dump heavy material and equipment.
It is apparent that many modifications and variations of this invention as hereinbefore set forth may be made without departing from the spirit and scope thereof.
The specific embodiments described are given by way of example only and the invention is limited only by the terms of -the appended claims.
Claims (21)
1. A tilt bed for mounting on a truck equipped with lift means, said bed comprising:
A) a frame adapted for pivotal attachment adjacent its rearward end to the rearward end of the truck frame and for pivotal attachment adjacent its for-ward end to the lift means of the truck;
B) decking over said frame;
C) a transverse front bulkhead frame extending verti-cally upward from the forward end of said frame;
D) elevated hoist means supported on said bed adjacent to the forward end thereof for lifting movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for rotation about a vertical axis,
A) a frame adapted for pivotal attachment adjacent its rearward end to the rearward end of the truck frame and for pivotal attachment adjacent its for-ward end to the lift means of the truck;
B) decking over said frame;
C) a transverse front bulkhead frame extending verti-cally upward from the forward end of said frame;
D) elevated hoist means supported on said bed adjacent to the forward end thereof for lifting movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for rotation about a vertical axis,
2) an elongated boom extending rearwardly from the top of said vertical standard and connected thereto for rotation therewith, said boom being elevated above the deck of said flat bed,
3) winch means mounted on said standard for rota-tion therewith,
4) power means fox rotating said boom, and
5) separate power means for actuating said winch, E) transverse roller means journaled for rotation adjacent the rearward edge of said bed; and F) control means for independently operating said lift means, boom rotation and winch means.
2. A tilt bed according to claim 1 wherein:
A) longitudinally extending side gates are hingedly supported on opposite sides of said bed; and B) locking means are provided for securing said side gates in upright position.
3. A tilt bed according to claim 2 wherein said side gates each include:
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
4. A tilt bed according to claim 2 wherein:
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
5. A tilt bed according to claim 1 wherein said power means for rotating said boom comprises a pair of oppositely acting hydraulic cylinders operatively connected to said hoist standard.
2. A tilt bed according to claim 1 wherein:
A) longitudinally extending side gates are hingedly supported on opposite sides of said bed; and B) locking means are provided for securing said side gates in upright position.
3. A tilt bed according to claim 2 wherein said side gates each include:
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
4. A tilt bed according to claim 2 wherein:
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
5. A tilt bed according to claim 1 wherein said power means for rotating said boom comprises a pair of oppositely acting hydraulic cylinders operatively connected to said hoist standard.
6. A tilt bed according to claim 5 wherein:
A) said vertical hoist standard includes a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side thereof adjacent the top of said bulkhead frame;
B) a pair of hydraulic cylinders is supported by the top of said bulkhead frame at opposite ends thereof;
C) a first drive chain is attached to one end of one of said drive sprockets, extending partially around said sprocket to a connection with the piston of one of said cylinders; and D) a second drive chain is attached to the opposite end of the other of said drive sprockets, extend-ing partially around said other sprocket to a connection with the piston of the other of said cylinders.
A) said vertical hoist standard includes a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side thereof adjacent the top of said bulkhead frame;
B) a pair of hydraulic cylinders is supported by the top of said bulkhead frame at opposite ends thereof;
C) a first drive chain is attached to one end of one of said drive sprockets, extending partially around said sprocket to a connection with the piston of one of said cylinders; and D) a second drive chain is attached to the opposite end of the other of said drive sprockets, extend-ing partially around said other sprocket to a connection with the piston of the other of said cylinders.
7. A tilt bed according to claim 1 wherein said trans-verse tail roller has a plurality of longitudinally aligned slots in its surface, said slots being adapted to be temporarily engaged by hook-like members of the forward end of at least one inclined ramp to facilitate loading of vehicles and skid mounted materials.
8. A tilt bed truck having a hoist and fold-down sides comprising:
A) a truck having a frame supported on front and rear axles, wheels on said axles, a forwardly mounted motor and a driver's cab;
B) a tiltable flat bed pivotally supported on said frame adjacent to the rearward end of said frame;
C) lift means for said bed pivotally secured at one end to said truck frame and at the other end adja-cent to the forward end of said bed;
D) power means for actuating said lift means;
E) a transverse front bulkhead frame extending verti-cally upward from the forward end of said bed;
F) hoist means supported on said bed adjacent to the forward end thereof for movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for limited rotation about a vertical axis, 2) an elongated generally horizontal boom extend-ing rearwardly from the top of said vertical standard and connected thereto for rotation therewith, said boom being spaced above the deck of said flat bed, 3) winch means mounted on said standard for rota-tion therewith, 4) power means for rotating said boom, and 5) separate power means for actuating said winch, G) transverse roller means journaled for rotation adjacent the rearward edge of said bed; and H) control means for independently operating said lift means, boom rotation and winch means.
A) a truck having a frame supported on front and rear axles, wheels on said axles, a forwardly mounted motor and a driver's cab;
B) a tiltable flat bed pivotally supported on said frame adjacent to the rearward end of said frame;
C) lift means for said bed pivotally secured at one end to said truck frame and at the other end adja-cent to the forward end of said bed;
D) power means for actuating said lift means;
E) a transverse front bulkhead frame extending verti-cally upward from the forward end of said bed;
F) hoist means supported on said bed adjacent to the forward end thereof for movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for limited rotation about a vertical axis, 2) an elongated generally horizontal boom extend-ing rearwardly from the top of said vertical standard and connected thereto for rotation therewith, said boom being spaced above the deck of said flat bed, 3) winch means mounted on said standard for rota-tion therewith, 4) power means for rotating said boom, and 5) separate power means for actuating said winch, G) transverse roller means journaled for rotation adjacent the rearward edge of said bed; and H) control means for independently operating said lift means, boom rotation and winch means.
9. A tilt bed truck according to claim 8 wherein:
A) longitudinally extending side gates are hingedly supported on opposite sides of said bed; and B) locking means are provided for securing said side gates in upright position.
A) longitudinally extending side gates are hingedly supported on opposite sides of said bed; and B) locking means are provided for securing said side gates in upright position.
10. A tilt bed truck according to claim 9 wherein said side gates each include:
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
11. A tilt bed truck according to claim 9 wherein:
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
12. A tilt bed truck according to claim 8 wherein said power means for rotating said boom comprises a pair of oppositely acting hydraulic cylinders operatively connected to said hoist standard.
13. A tilt bed truck according to claim 12 wherein:
A) said vertical hoist standard includes a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side thereof adjacent the top of said bulkhead frame;
B) a pair of hydraulic cylinders is supported by the top of said bulkhead frame at opposite ends thereof;
C) a first drive chain is attached to one end of one of said drive sprockets, extending partially around said sprocket to a connection with the piston of one of said cylinders; and D) a second drive chain is attached to the opposite end of the other of said drive sprockets, extend-ing partially around said other sprocket to a connection with the piston of the other of said cylinders.
A) said vertical hoist standard includes a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side thereof adjacent the top of said bulkhead frame;
B) a pair of hydraulic cylinders is supported by the top of said bulkhead frame at opposite ends thereof;
C) a first drive chain is attached to one end of one of said drive sprockets, extending partially around said sprocket to a connection with the piston of one of said cylinders; and D) a second drive chain is attached to the opposite end of the other of said drive sprockets, extend-ing partially around said other sprocket to a connection with the piston of the other of said cylinders.
14. A tilt bed truck according to claim 13 wherein said transverse tail roller has a plurality of longitudinally align-ed slots in its surface, said slots being adapted to be tempor-arily engaged by hook-like members at the forward end of at least one inclined ramp to facilitate loading of vehicles and skid mounted materials.
15. A tilt bed truck according to claim 8 wherein self-engaging latch means are provided between said truck frame and tilt bed, said latch means comprising:
A) a pair of latch pins extending transversely out-ward from the sides of said truck frame forwardly of the bed lift means;
B) a spring-biased crank arm journaled for limited rotation in the underside of said tilt bed frame adjacent the forward end thereof;
C) a pair of latch hooks rigidly secured to said crank arm for limited rotation therewith, said latch hooks being engageable with said latch pins in locking relation, said latch hooks having tapered edges engageable with said latch pins to guide said hooks into locking position; and D) a handle on said crank arm to manually disengage said hooks.
A) a pair of latch pins extending transversely out-ward from the sides of said truck frame forwardly of the bed lift means;
B) a spring-biased crank arm journaled for limited rotation in the underside of said tilt bed frame adjacent the forward end thereof;
C) a pair of latch hooks rigidly secured to said crank arm for limited rotation therewith, said latch hooks being engageable with said latch pins in locking relation, said latch hooks having tapered edges engageable with said latch pins to guide said hooks into locking position; and D) a handle on said crank arm to manually disengage said hooks.
16. A tilt bed for mounting on a truck equipped with lift means, said bed comprising:
A) a frame adapted for pivotal attachment adjacent its rearward end to the rearward end of the truck frame and for pivotal attachment adjacent its forward end to the lift means of the truck;
B) decking over said frame;
C) a transverse front bulkhead frame extending verti-cally upward from the forward end of said frame;
D) elevated hoist means supported on said bed adjacent to the forward end thereof for lifting movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for limited rota-tion about a vertical axis, 2) a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side of said standard adjacent the top of said bulkhead frame, 3) a pair of hydraulic cylinders supported by the top of said bulkhead frame at opposite ends thereof, 4) a first drive chain attached to one end of one of said drive sprockets, extending parti-ally around said sprocket to a connection with the piston of one of said cylinders, 5) a second drive chain is attached to the oppo-site end of the other of said drive sprockets, extending partially around said other sprocket to a connection with the piston of the other of said cylinders, 6) an elongated generally horizontal boom extend-ing rearwardly from the top of said vertical standard and connected thereto for rotation therewith, said boom being elevated above the deck of said flat bed, 7) winch means mounted on said standard for rota-tion therewith, and 8) separate hydraulic power means for actuating said winch, E) longitudinally extending side gates hingedly supported on opposite sides of said bed;
F) locking means for securing said side gates in upright position;
G) transverse roller means journaled for rotation adjacent the rearward edge of said bed; and H) control means for independently operating said lift means, boom rotation and winch means.
A) a frame adapted for pivotal attachment adjacent its rearward end to the rearward end of the truck frame and for pivotal attachment adjacent its forward end to the lift means of the truck;
B) decking over said frame;
C) a transverse front bulkhead frame extending verti-cally upward from the forward end of said frame;
D) elevated hoist means supported on said bed adjacent to the forward end thereof for lifting movement therewith, said hoist means including:
1) a vertical standard rotatably supported in said front bulkhead frame for limited rota-tion about a vertical axis, 2) a pair of vertically spaced semi-circular drive sprockets in stacked relation on one side of said standard adjacent the top of said bulkhead frame, 3) a pair of hydraulic cylinders supported by the top of said bulkhead frame at opposite ends thereof, 4) a first drive chain attached to one end of one of said drive sprockets, extending parti-ally around said sprocket to a connection with the piston of one of said cylinders, 5) a second drive chain is attached to the oppo-site end of the other of said drive sprockets, extending partially around said other sprocket to a connection with the piston of the other of said cylinders, 6) an elongated generally horizontal boom extend-ing rearwardly from the top of said vertical standard and connected thereto for rotation therewith, said boom being elevated above the deck of said flat bed, 7) winch means mounted on said standard for rota-tion therewith, and 8) separate hydraulic power means for actuating said winch, E) longitudinally extending side gates hingedly supported on opposite sides of said bed;
F) locking means for securing said side gates in upright position;
G) transverse roller means journaled for rotation adjacent the rearward edge of said bed; and H) control means for independently operating said lift means, boom rotation and winch means.
17. A tilt bed according to claim 16 wherein said side gates each include:
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
A) a frame;
B) a longitudinal plate supported by said frame and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
C) a plurality of vertical frame members, the bottom-most ends of which extend below the bottom edge of said plate;
D) slots in said frame members adjacent the bottom-most ends, said slots engageable with hinge pins supported on the sides of said bed frame; and E) an arcuate cam-like edge at the ends of said frame members.
18. A tilt bed according to claim 16 wherein:
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling support-ed by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
A) said side gates each include a frame having a plurality of vertical frame members, a plurality of horizontal frame members and paneling support-ed by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
19. A tilt bed according to claim 16 wherein said trans-verse tail roller has a plurality of longitudinally aligned slots in its surface, said slots being adapted to be temporarily engaged by hook-like members of the forward end of at least one inclined ramp to facilitate loading of vehicles and skid mounted materials.
20. A flat bed for mounting on a wheeled track or truck trailer, said bed comprising:
A) a frame, said frame being of a width to extend beyond the wheels of the truck or truck trailer on which the bed is to be mounted;
B) decking over said frame;
C) longitudinally extending side gates hingedly supported on opposite sides of said bed, said side gates being of a width less than the distance from the decking on the top of the bed to the ground when mounted on a truck or truck trailer; and said side gates being capable of rotation between an upright vertical position and downward vertical position, and having locking means for securing said side gates in upright position, said side gates each including:
1) a frame, 2) a longitudinal plate having top and bottom edges supported by said frame below the decking forming the upper surface of the bed and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
3) said side gate frame including a plurality of vertical frame members having top ends and bottom ends, the bottommost ends of said vertical frame members extending below the bottom edge of said plate;
4) slots in said vertical frame members adjacent the bottommost ends, said slots engageable with hinge pins supported on the sides of said bed frame and fixed thereto; and 5) an arcuate cam-like edge at the ends of said vertical frame members engageable with said longitudinal plate.
A) a frame, said frame being of a width to extend beyond the wheels of the truck or truck trailer on which the bed is to be mounted;
B) decking over said frame;
C) longitudinally extending side gates hingedly supported on opposite sides of said bed, said side gates being of a width less than the distance from the decking on the top of the bed to the ground when mounted on a truck or truck trailer; and said side gates being capable of rotation between an upright vertical position and downward vertical position, and having locking means for securing said side gates in upright position, said side gates each including:
1) a frame, 2) a longitudinal plate having top and bottom edges supported by said frame below the decking forming the upper surface of the bed and engageable with the side of said bed frame in face-to-face relation when the side gates are in upright position;
3) said side gate frame including a plurality of vertical frame members having top ends and bottom ends, the bottommost ends of said vertical frame members extending below the bottom edge of said plate;
4) slots in said vertical frame members adjacent the bottommost ends, said slots engageable with hinge pins supported on the sides of said bed frame and fixed thereto; and 5) an arcuate cam-like edge at the ends of said vertical frame members engageable with said longitudinal plate.
21. A tilt bed according to claim 20 wherein:
A) said side gate frames each include a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
A) said side gate frames each include a plurality of horizontal frame members and paneling supported by said frame; and B) a plurality of foot openings are provided in said paneling, each immediately adjacent to one of said horizontal and one of said vertical frame members to form aircraft-style steps when said side gate is in lowered position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000591441A CA1290727C (en) | 1989-02-17 | 1989-02-17 | Self-loading truck and tilt bed therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000591441A CA1290727C (en) | 1989-02-17 | 1989-02-17 | Self-loading truck and tilt bed therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1290727C true CA1290727C (en) | 1991-10-15 |
Family
ID=4139642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000591441A Expired - Lifetime CA1290727C (en) | 1989-02-17 | 1989-02-17 | Self-loading truck and tilt bed therefor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1290727C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116002504A (en) * | 2023-03-24 | 2023-04-25 | 国网山东省电力公司肥城市供电公司 | Equipment installation lifting machine on electric wire supporting circuit column |
-
1989
- 1989-02-17 CA CA000591441A patent/CA1290727C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116002504A (en) * | 2023-03-24 | 2023-04-25 | 国网山东省电力公司肥城市供电公司 | Equipment installation lifting machine on electric wire supporting circuit column |
| CN116002504B (en) * | 2023-03-24 | 2023-06-16 | 国网山东省电力公司肥城市供电公司 | Equipment installation lifting machine on electric wire supporting circuit column |
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