EP0716041A1 - Appareil pour lever des panneaux - Google Patents

Appareil pour lever des panneaux Download PDF

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Publication number
EP0716041A1
EP0716041A1 EP94118701A EP94118701A EP0716041A1 EP 0716041 A1 EP0716041 A1 EP 0716041A1 EP 94118701 A EP94118701 A EP 94118701A EP 94118701 A EP94118701 A EP 94118701A EP 0716041 A1 EP0716041 A1 EP 0716041A1
Authority
EP
European Patent Office
Prior art keywords
chain
telescoping
cylinder
sections
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94118701A
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German (de)
English (en)
Inventor
Roland O. Young
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP94118701A priority Critical patent/EP0716041A1/fr
Publication of EP0716041A1 publication Critical patent/EP0716041A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/18—Implements for finishing work on buildings for setting wall or ceiling slabs or plates
    • E04F21/1805—Ceiling panel lifting devices
    • E04F21/1811—Ceiling panel lifting devices with hand-driven crank systems, e.g. rope, cable or chain winding or rack-and-pinion mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for

Definitions

  • This invention relates to panel lifting apparatus.
  • the invention comprises a lifting apparatus having a mobile housing with three telescoping sleeves slidably mounted in one another and in said housing to slide upward in telescoping relation to telescope upward a drywall panel to upper height for installation.
  • the housing has hydraulic piston and cylinder mounted therein, and chain connection between the sleeves and the cylinder, whereby upward movement of the cylinder relative to the piston in the housing acts through the chain connection to telescope the sleeves upward out of the housing, for telescoping the panel upward.
  • a horizontal platform is detachably mounted to the housing carrying a power pack for powering the cylinder.
  • the platform has a reservor thereon for holding hydraulic fluid and a pump for pumping fluid from the reservoir along a hose line from the platform to the cylinder in the housing to telescoping the cylinder hydraulically relative to the piston.
  • the platform also has a battery for powering an electric motor, with the electric motor powering the pump.
  • the platform and hose line have detachable connections between the housing and hose connection to the cylinder for detaching the platform and components from the housing.
  • the panel lifting invention 20 is illustrated having a triangular elongated main frame channel member 20' with three elongated triangular channel members 21, 22, and 23, with each of the members 21, 22, and 23 slidably mounted in one another for telescoping movement upward from their position shown in Figure 1.
  • a chain drive box 24 is mounted near the top of the main channel member 20'.
  • the drive box 24 has a main sprocket gear 26 which is rotatably mounted in the drive box 24 and is rotated by rotation of the handle 35 through a slip clutch drive connecting the handle with the sprocket gear 26.
  • a reduction gear 27 has a large sprocket gear 27' fixed to a shaft 28 and a small sprocket gear 28' fixed coaxially to shaft 28 and the shaft and its gears are rotatably mounted in the box 24 above gear 26.
  • An endless chain 28'' drives the large sprocket 27' from gear 26, connecting the two gears together in driving relation. The rotation of the large reduction gear 27' rotates the small gear 28' , which drives the first chain length 29.
  • the chain length 29 has its upper end connected to the upper end 29' of channel member 21 and its lower end 29'' connected to the lower end of the same channel member 21.
  • An idler roller 29''' is rotatably mounted in the box above gear 28' so as to wrap the chain 29 partially about gear 28' to maintain the gear 29 in driving engagement with gear 28' so as to be driven by gear 28'.
  • a second chain length 30 has its lower end 30'' connected to the lower end of channel member 22 with its upper end 30' connected to the upper end of the main channel member 20' with an intermediate portion of the chain 30 wrapped about idler roller 21' , rotatably mounted to channel member 21, so that raising the channel member 21 raises simultaneously channel member 22.
  • a third chain length 31 has its lower end connected to sliding channel member 23 and its upper end connected to the upper end of channel member 21, with an intermediate portion of chain 31 wrapped about an idler roller 22', rotatably mounted to channel member 22, so that raising channel member 22 raises chain length 31 at its locaton about roller 22' thereby raising channel 23 relative to channel 22.
  • the channel 23 has a tube mounting socket 23' fixed to its upper end and a conventional horizontally elongate panel supporting framework 24 has a tube 33' fixed to its center portion and sliidably received in socket 23' to support the framework 24 on channel 23 whereby a panel mounted on frame work 24 is raised upward by the raising of the channels.
  • the chain drive box 25 has two handles 34 and 35.
  • the handle 34 is pivotally mounted to the box 25 at pivot point 36 to pivot outward to provide stabilizing handle for stabilizing the device 20.
  • the operator will grasp this handle with one hand while rotating handle 35 with his other hand to drive the chain drive to raise sections 21, 22, and 23 for raising dry wall panels and similar objects for installation in the ceiling for example, by placing the panel upon the cross framework 24 mounted to the top section 23.
  • the handle 34 has two positions, its operative stabilizing position shown in solid lines in Figure 1 for stabilizing the device and its storage position shown in dashed lines in Figure 1.
  • the handle 34 when in its storage position serves to lock the sections 21, 22, and 23 in their retracted stored position shown in Figure 1 by the pivotally mounted rod 34' of the handle being pivoted over the projecting lug 21'' fixed to the top of section 21. Once the rod 34' has been positioned over the lug it locks the telescoping sections against telescoping for purposes of storage, and the pivotal angle of the handle and rod 34 and 34', when in the locked positiion, prevents the sections from telescoping upward even under the rotational drive of handle 35.
  • a spring operated chain length slack adjustment member 37 is connected between the upper end 29' of the first chain length and the upper end 38 of the channel or section 21 and serves to take up any slack in the chain to keep it taut after it has been driven past the drive gear 28 by the rotation of gear 28.
  • the upper end 29' of the chain is pivotally mounted to the case 37' of the adjustment member 37.
  • the case has an elongated hollow interior 37'' and a pin or screw 40 has its head 40' abutting a flange 38' fixed to the top of the channel member 21, and the screw is threaded in a bore in the flange 38' and passes freely through a bore in the case and extends down into the interior of the case.
  • a spring 41 is mounted coaxially about the screw and a washer is fixed to the bottom of the screw and slidable within the interior of the case.
  • the washer holds the spring in place on the screw with the spring in abutting relation against the top of the case urging the screw downward toward the gear 28 and urging the case upward to its position shown to keep the chain attached to the case taut.
  • the pin or screw has a turnable head so that the screw, though it passes freely through the bore in the case by its threaded engagement with the flange 38' can be turned to thread the screw upward or downward to raise or lower the case and thereby the chain relative to section 21 to adjust the chain length end position relative to section 21 and gear 28.
  • the chain drive box 24 has two side panels 24' and 24'' with the shaft 27' of the reduction gear 27 and gear 28 fixed to these gears and rotatably mounted in the side panels 24' and 24'' of the box.
  • the main sprocket gear 25 has a shaft 25' which is rotatably mounted in panel 24' at its one end and the gear 25 is fixed to the shaft .
  • a shaft portion 41 is fixed to the gear 25 at its other end and has an annular wall portion 41'.
  • a sleeve 42 is fixed to the wall 24'.
  • a friction washer 44 is freely fitted over the shaft to abut the wall portion 41'.
  • a spool 43 is fitted over the shaft with one face of the spool 43' abutting the friction washer 41'.
  • a coil spring 46 surrounds the spool, with one end 46' locked in a notch in the sleeve 42.
  • a friction washer 44' is fitted against the other wall 43'' of the spool 43.
  • a cylinder 47 has an end wall 47' fixed thereto with a centre bore for the shaft 41 to extend therethrough and with the end wall abutting the washer 43'' at its one face.
  • the shaft 41 is threaded along its one end portion 41'and a tube 49 having an inner threaded inner portion is threaded onto the shaft 41.
  • the threaded tube 49 has an annular end wall portion 50 fixed thereto and the end wall portion 50 has annular radial ridges 50' along its outer face portion to engage complementary annular radial ridges 47'' in the end wall 47' of the cylinder, so that when the threaded tube 49 is rotated or screwed along the shaft 41 toward and against the end wall 47' of cylinder 47, the threading of the tube or sleeve against the end wall causes the sleeve's end wall to engage the cylinder end wall to lock together in non rotatable relation to one another.
  • a coil spring 51 is fitted over the threaded sleeve with one end 51' engaged in a notch 53 in the end wall 47 to lock one end of the spring 51 to the end wall 47'.
  • a washer 53 is fitted over shaft 41 in slightly spaced relation to the screw.
  • An end wall 54 is fitted over the shaft and has a center bore to receive the shaft and the end wall 54 is fixed to the cylinder 55.
  • a nut 56 is threaded onto the shaft 41 at its outer end to hold the end wall 54 on the shaft against the cylinder.
  • the cylinder 55 has a slot 55' along its one edge and a pair of lugs 57 and 57' are fixed on edges of the cylinder 55 on opposite sides of the slot 55'.
  • a threaded rod 58 is threaded into one lug with coil spring 59 mounted axially on the rod and engaging the head of the rod at one end and the lug 57 at the other end to urge the lug 57' toward lug 57 so as to frictionally engage cylinder 55 with cylinder 47, the handle 35 is fixed to sleeve or cylinder 55.
  • the spring 46 which surrounds the spool 43, cannot turn significantly either clockwise or counterclockwise, except to wind or unwind about the spool and is in constant frictional contact with the spool so that clockwise rotaion of the spool can occur when turning the handle clockwise by the spool turning inside the spring and enlarging the spring by unwinding it.
  • any frictional contact attempting to turn the spool by rotation of the handle only causes the spring to wind and tighten about the spool preventing any counterclock rotation of the spool, and thus the rotation of the handle only rotates the the threaded tube away from the spool and allows slippage to occur of the gear to cause the retraction.
  • the spring 46 provides a constant brake upon the spool against its counterclockwise rotation, so that the spool and gear cannot rotate in this direction and as result the sections cannot retract unless the handle 35 is itself separately being rotated counterclockwise.
  • the weight of the sections and any load thereon cannot itself cause the handle to rotate counterclockwise or cause the sections to retract down significantly more than the separate handle 35 rotation would allow by its loosening the connection by rotation of the tube away from the wall, as the the lowering of the sections causes the sprocket gear 28 to rotate counterclockwise which turns shaft 41, drawing the threaded tube 49 toward the wall of cylinder 47, and relocks the sprocket gear to the spool which spool cannot rotate counterclockwise, thereby stopping the counterclockwise rotation of the gear 28.
  • Spring 46 by its engagement with the spool prevents counterclockwise rotation of the spool thereby stops any further retraction unless the handle is rotated again which again allows slippage to occur of the gear counterclockwise relative to the spool.
  • the spring 58 serves as an overload release by engaging the handle 35 outer sleeve 55 to the inner sleeve or wall 47, so that the handle will turn the inner sleeve or wall 47 unless there is too much of a load on the telescoping sections, such as by their being blocked from going any higher when the operator has been turning the handle to raise them, in which case, the spring 58 will allow the outer sleeve 55 to spread apart slightly and the handle will then slip on cylinder 47 and not rotate the inner sleeve or wall 47.
  • the handle When rotating the handle counterclockwise to lower the sections, the handle rotates the sleeve 55, rotating the cylinder 47 and cylinder wall 47', the wall 47' rotates the the spring 49 , and also through the serrated connection between the cylinder wall 47' and the end flange of the threaded tube 49, the end wall causes the rotation initially of the thread tube on the shaft 41 away from the wall 47' sufficiently to loosen the frictional connection.
  • the depth axially of the overlapping interconnections of the notch in the wall 47' and flange of the threaded tube must be sufficient to form a positive drive connection initially between the cylinder wall and the flange of the tube that is long enough to cause the rotation of the tube with the wall long enough to sufficiently unfreeze the tightness of the connection caused by the threaded tube flange against the wall 47', so that, thereafter, the frictional connection between the spring 51 and the threaded tube will provide sufficient friction thereafter to cause the tube to rotate with the rotating of the spring when rotating the handle, so that further rotation of the handle 35 counterclockwise will thread the threaded tube on the shaft further away from the spool and the frictional washers.
  • the notches having sufficient overlapping depth to them thus assures that the counterclockwise rotation of the handle and wall 47' will not simply rotate the spring on the threaded tube by the wall rotation without rotating the threaded tube, since without rotating the threaded tube there would be no loosening of the connection.
  • the length of the rod 35'', with respect to the center axis of the shaft 41, can be adjusted or varied.
  • the handle 35 has a mounting post 35' which is fixed to the sleeve 55, and a slidably adjustable rectangular rod 35'' is slidably mounted in a square slot in the post 35'.
  • a coil spring 60 is mounted coaxially over a pin 61.
  • the pin 61 is slidably mounted in a bore in the post and the spring has one end engaging the ledge 63 of the post and the other end engaging the annular projecting lip 61' of the pin to urge to the pin downward in the bore in the post to engage against the rod 35''.
  • the square rod 35'' has a plurality of spaced bores of a size to receive the pin and to lock the pin in engagement with the rod and thereby lock the rod in an adjusted position with respect to the center axis of the shaft 41.
  • the operator When it is desired to lengthen the rod, with respect to the center axis of the shaft 41, the operator will pivot the lever 62 upward from its position shown in solid lines, with respect to the post 35'. Since the lever 62 has a bore large enough to slidably receive the stem of the pin 61, but smaller than the head of the pin, the raising of the lever 62 will cause the lever to engage the head of the pin 61 and raise the pin out of one of the bores 35'''' in the rod, so that the rod can slid along the square opening in the post to the left from its position shown in Figure 1, to thereby lengthen the effective length of the rod as a handle with respect to the shaft 41.
  • the rod will be slid to place a selected another one of the bores 35'''' in alignment with the pin 61, whereupon the operator can release the lever 62 allowing it to drop back down so that the pin under the urging of the spring can drop down into the selected one of the bores to lock the rod in its adjusted position.
  • the panel lifting device 20 operates as follows: The operator will, with the panel support member 36 removed from the socket 21' at the top of channel member 21, detach the rod 34' from the projecting lug 21'' by pivoting it counterclockwise over the lug and then pivot the handle 34 counterclockwise from its position shown in phantom lines mounted over lug 21' to its position shown in solid lines in Figure 1 and will engage the end 34'' of the rod against the front face 39 of plate 42 and pivot the plate 42 clockwise from its position shown in Figure 10 without the end of the rod 34' mounted therein to its position shown in Figure 10 in phantom, pivoting the plate 42 clockwise backward and enabling the rod 34' to engage the end 34'' of the rod in the notches 43, whereupon the plate 42 will under spring urging be clear of the rod 34' and pivot back to its position as shown in Fig.
  • the operator will place a conventional dry wall panel upon the conventional panel support member 36 mounted to the innermost channel section 23 when it is desired to raise the dry wall panel to a ceiling for example to install the panel in the celing.
  • the panel lifting device will be rolled on the floor to its desired position beneath the portion of the ceiling the operator wishes to install the dry wall panel.
  • screw or tube 49 through its threaded engagement with the shaft 41, causes the tube to thread along the shaft toward end wall 47' of cylinder 47 and until the complementary ridges 50' and 47'' of the tube and cylinder engage and lock the cylinder and screw or tube together, so that they move together axially along the shaft toward the gear 28 as well as rotate together.
  • the tube in moving along the shaft, will move the cylinder 47 toward the frictional washer 44' and cause the end of wall 47 to engage against washer 44'. This causes washer 44', in turn, to engage against one wall of the spool, moving the spool against the other washer 44 along the other side of the spool.
  • the frictonal washer 44 is moved against the wall 41', fixed to shaft 41, and frictionally locks the wall, shaft and its sprocket gear 28, fixed thereto, together with the frictional washers, spool, screw, spring 51, cylinder47 and its wall, sleeve 55, and handle 35, so that rotation of the handle 35, by its clockwise rotation, rotates the sprocket gear 28 to drive the endless chain 28'', which drives the reduction gear 27 with the small gear 27' of the reduction gear driving the length of chain 29, which raises the section 21.
  • section 21 The raising of section 21 simultanteously raises section 22, through the chain connection 30, which simultaneously raises section 23 through chain length connection 31, and the raising of section 23 raises the panel support 24 mounted thereon and the panel thereon.
  • the handle will continue to be rotated clockwise raising and telescoping the sections until the dry wall panel thereon reaches the ceiling, assuming the height of the ceiling is less than the telescoping height of the sections 21,22, and 23.
  • the sections 21, 22, and 23 will telescope relative to one another until approximately 85-90 percent of the length of each section has been telescoped out of its outer adjacent section, although this percentage may vary.
  • the section 21 can telescope upward out of section 20' for approximately the 85-90 percent of the section 21, section 22 can telescope out of section 21 for a similar percent of its length, and the same for section 23.
  • a suitable stop is provided at the bottom of section 21 which can engage a cooperating stop at the bottom of the box 25 or nearby, to stop the upward movement of section 21, relative to the stationary section 21' at the approximate 85-90 percent telescoping extension.
  • the handle 35 will be rotated in the opposite direction.
  • the hydraulic cylinder drive chain driver lifting apparatus 50 is illustrated having a main housing 50'.
  • Another sleeve or compartment portion 52 is fixed to the rear of the portion of the housing 50' to form the fixed housing; and the housing extends vertically upward and is supported on horizontal legs .
  • a hydraulic cylinder drive 53 is mounted in the rear compartmen sleeve 52 of the housing and has a hydraulic cylinder 54 and a piston 55 with the cylinder slidably mounted on the piston 55.
  • the piston 55 of the cylinder is fixed to the bottom of the rear compartment 33 of the housing.
  • the piston 55 has a hollow piston rod 56 with a port 57 at the bottom of the piston rod to receive hydraulic fluid into the hollow passageway 56' upward through the rod and through a passageway 56' in the piston 55 into th hollow interior space 58 between the top 55' of the piston and the bottom 54' of the cylinder 54.
  • the cylinder 54 is slidably mounted in the rear of the housing to upward and downward in the housing relative to the piston and housing.
  • a roller 59 is rotatably mounted on the top of the upward and downward moving cylinder.
  • a link chain 60 has one end 60' fixed to one edge of the rear sleeve the housing below the roller 59. The chain 60 extends over the top of of the roller 59, then downward on the other side of the roller, with its other lower end 60'' attached to the bottom of the outermost telesleeve 29 of the three telescoping sleeves 29, 30, and 31.
  • the chain 60 by extending upward over the top of the roller 59 and then downward to its connection with the sleeve 29 at the bottom of the sleeve, rolls with the roller as the cylinder moves upward.
  • This chain arrangment enables the upward movement of the cylinder 54 to move the lower end 60'' of the chain 60 upward, twice the distance of the cylinder travel to move the sleeve 29 twice the cylinder travel length.
  • the hydraulic fluid in traveling upward through the center of the hollow piston rod, through the piston to the hollow interior space between the top of the piston and the bottom wall of the cylinder adds fluid to this interior space and forces the movable cylinder 5 upward relative to the piston to increase the space to accomodate the added fluid being pumped into the interior space.
  • a detachable platform 64 is detachably mounted in a horizontal position to the vertical fixed rear sleeve or compartment 33 of the housing.
  • a battery 65 is mounted to the platform, mounted in a U shaped metal plate 65', which houses the battery and is mounted to the platform.
  • a pump 66, an electric motor 67, and a reservior 68 for holding the hydraulic fluid are also mounted on the platform 64.
  • a hose line coupling member 70 has an upper coupling member 71 and a lower coupling member 72 which couple together in detachable relation.
  • the upper coupling member 70 is permanently attached ot the front 64' of the platform on a bracket 74 fixed to the platform.
  • the bracket 74 has a pair of side legs 73 and 73' fixed together at their upper end with a sleeve 75 fixed to the lower ends of the legs, just below the upper coupling member.
  • a hose line 76 is attached at its one end 76' to the upper coupling member 71, and is held to the spaced arms 77 and 77' of the platform by a pair of horizontal braces fixed to the arms by a pair of screws threading the two braces together, through bores in the spaced arms tightening against the hose line 76 from opposite sides and tighten the arms to hold the hose line to the arms of the platform.
  • the hose line 76 at its other end 76'' is attached to the output port of the pump 66.
  • a second hose line 78 has its one end 78' attached to the lower coupling member 72 and extends through a hollow rod 79 fixed to the rear sleeve of the housing 50' with its other end 79'' attached to the inlet port57 into the piston.
  • the rod 79 fixed to the sleeve of the housing, slidably receives the larger sleeve 75 in telescoping relation
  • the larger sleeve 75 being fixed to the platform thereby mounts the platform to the housing.
  • the sleeve 75 also has a pair of side flanges 75' and 75'' which extend down on each side of the mounting lug 80'' which is directly fixed to the rear sleeve 33 of the housing at one and fixed to the rod 79 at its other end.
  • the flanges prevent the platform from pivoting about the rod on the sleeve 75 by engaging sides of the mounting lug 80'.
  • the mounting lug also serves to space the rod slightly rearward from the housing.
  • the electric motor 67 has its output shaft connected to the pump 66 so that activation of the motor powers the pump 66.
  • the motor 67 is powered by the storage battery 65 also on the detachable platform
  • a control handle 80 is mounted on the pump and has three position The handle is spring loaded to its neutral position, in which position the electric motor is turned off. Pivoting the handle upward turns the electric motor on which begins to pump fluid into the cylinder causes the cylinder to telescope upward. Turning the handle downward opens the line with the motor off allowing fluid to drain out of the cylinder at a rate depending upon how far the handle is pivoted down.
  • the upper coupling member 71 has an axially slidable ring which is spring loaded downward, but then manually slid axially upward unlatches the upper coupling member from the lower coupling member. This action also unlatches the platform from the housing, as the coupling connections also serves as a platform latch.
  • the ring 81 is slid downward onto the lower coupling member, the ring automatically slides over the annular ridge 81' on the lower coupling member and locks in the ridge.
  • the upper coupling member has a plurality of balls in a circle under spring spressure radially inward and which lock in the ridge once the coupling has been attached.
  • the platform and housing in addition to their sleeve and rod connection, are also connected by a hook or downward pin 82 fixed on an upper brace 83 fixed to the platform.
  • the brace 83 slides over the plate 84 fixed to the housing and the pin slides into a bore in the plate to lock the upper portion of the platform to the housing.
  • the coupling members upper and lower are of a conventional type coupling well known in the hydraulic art, wherein the coupling members when brought together co-axially will automatically latch together in watertight relation so that fluid may pass through the upper and lower coupling members.
  • sleeve 29 While the telescoping sleeve 29 is slid upward by the chain 60 being drawn up at one end, sleeve 29 has a roller 62 rotatably mounted at its top and a chain 61 has one end attached to the housing and extends over this roller and its other end 61'' is attached to the lower end of sleeve 30, and sleeve 30 has a roller 62' rotatably mounted to its top and a chain 63 its attached to sleeve 30 at its one end and extends over the roller 62' with its other end 63'' attached to the lower end of sleeve 31.
  • the rollers 59, 62, and 62' all have opposing annular reduced shoulders 94 about their opposite faces to recieve the pivoting edges of the side plates 85 of the chains 60, 61 and 63, so that the edge plates 85 will rest and ride in the reduced shoulder while the lateral pins 85' extending across from one edge plate to the other edge plate will rest on the outer circumference of the rollers.
  • the chains roll around with the rollers as their other ends are brought up by the upward movement of the rollers against the chains, as the chains raise the three telescoping sections 29,30, and 31 by the action of cylinder 54.
  • the shoulders act to keep the chains aligned on the roller
  • the panel lifting apparatus 50 will operate as follows:
  • the three horizontal legs 90,91, and 92 extend horizontally outward from the housing at even intervals about the housing and will have rollers mounted at their outer ends for rolling the apparatus to different locations for raising panels on the apparatus.
  • a dry wall panel, not shown, or other object to be raised will be placed on the horizontal frame 94' mounted to the top of the inermost sleeve 31.
  • the operator will raise the handle 80 to activate the electric motor which starts the pump which pumps hydraulic fluid from the reservoir 68 through the pump along hose line 76 through the upper and lower coupling members, while coupled together to the inlet port 57 of the piston upward through the piston into the space 58 causing the cylinder 54 to telescope upward thereby telescopic sleeves 29,30, and 31 upward.
  • the sections will telescope upward to their limit unless the handle 80 is turned down to neutral stopping the flow of fluid into the cylinder.
  • the drain valve has graduated construction so that the amount of draining of the fluid back into the reservoir may be relatively small if desired and its rate of flow back gradually increased if desired.
  • the weight of the telescoping sections wil act to force the cylinder downward to thereby cause the return flow of fluid back into the reservoir.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP94118701A 1994-11-28 1994-11-28 Appareil pour lever des panneaux Withdrawn EP0716041A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94118701A EP0716041A1 (fr) 1994-11-28 1994-11-28 Appareil pour lever des panneaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94118701A EP0716041A1 (fr) 1994-11-28 1994-11-28 Appareil pour lever des panneaux

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EP0716041A1 true EP0716041A1 (fr) 1996-06-12

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EP94118701A Withdrawn EP0716041A1 (fr) 1994-11-28 1994-11-28 Appareil pour lever des panneaux

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780428A1 (fr) * 1998-06-30 1999-12-31 Roger Mondelin Sa Appareil de levage et de manutention de plaques de materiau destinees notamment a la couverture de plafond
US7387293B2 (en) 2004-12-22 2008-06-17 Lawrence Boucher Construction Inc. Device for holding and positioning construction materials
US20130306925A1 (en) * 2012-05-15 2013-11-21 Charles Frank Cozza Lifting system for display cases
US9145285B1 (en) * 2015-01-08 2015-09-29 Finfrock Industries, Inc. Panel lifting apparatus and process
CN108060766A (zh) * 2017-12-27 2018-05-22 苏州睿烁环境科技有限公司 一种建筑工程用防护型墙面喷涂装置
CN108086653A (zh) * 2017-12-27 2018-05-29 苏州睿烁环境科技有限公司 一种建筑装饰用的移动型墙面喷涂装置
CN108179862A (zh) * 2017-12-27 2018-06-19 苏州睿烁环境科技有限公司 一种方便角度调节的建筑施工墙面喷涂装置
CN113107171A (zh) * 2021-03-19 2021-07-13 浙江东鹰装饰工程有限公司 一种室内吊顶板材安装装置
CN113882633A (zh) * 2021-08-30 2022-01-04 中铁十六局集团城市建设发展有限公司 一种吊顶龙骨架上安装矿棉板用自动化施工设备及方法
CN113967148A (zh) * 2020-07-23 2022-01-25 和也健康科技有限公司 一种康复锻炼仪
USD974692S1 (en) 2020-08-10 2023-01-03 John D. Cullinan Vehicle hardtop lift

Citations (6)

* Cited by examiner, † Cited by third party
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US2877868A (en) * 1956-05-31 1959-03-17 Multi Lift Co Hydraulic lift for industrial trucks and tractors
FR1237967A (fr) * 1959-08-10 1960-08-05 Appareil à élever les plaques destinées à la fabrication des plafonds
US3828942A (en) * 1972-04-27 1974-08-13 R Young Panel lifting device
US4027802A (en) * 1976-08-03 1977-06-07 Reynolds Francis E Building panel positioner
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Cited By (13)

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Publication number Priority date Publication date Assignee Title
FR2780428A1 (fr) * 1998-06-30 1999-12-31 Roger Mondelin Sa Appareil de levage et de manutention de plaques de materiau destinees notamment a la couverture de plafond
EP0969165A1 (fr) * 1998-06-30 2000-01-05 Roger Mondelin S.A. Appareil de levage et de manutention de plaques de matériau destinées notamment à la couverture de plafond
US7387293B2 (en) 2004-12-22 2008-06-17 Lawrence Boucher Construction Inc. Device for holding and positioning construction materials
US20130306925A1 (en) * 2012-05-15 2013-11-21 Charles Frank Cozza Lifting system for display cases
US9327954B2 (en) * 2012-05-15 2016-05-03 Charles Frank Cozza Lifting system for display cases
US9145285B1 (en) * 2015-01-08 2015-09-29 Finfrock Industries, Inc. Panel lifting apparatus and process
CN108060766A (zh) * 2017-12-27 2018-05-22 苏州睿烁环境科技有限公司 一种建筑工程用防护型墙面喷涂装置
CN108086653A (zh) * 2017-12-27 2018-05-29 苏州睿烁环境科技有限公司 一种建筑装饰用的移动型墙面喷涂装置
CN108179862A (zh) * 2017-12-27 2018-06-19 苏州睿烁环境科技有限公司 一种方便角度调节的建筑施工墙面喷涂装置
CN113967148A (zh) * 2020-07-23 2022-01-25 和也健康科技有限公司 一种康复锻炼仪
USD974692S1 (en) 2020-08-10 2023-01-03 John D. Cullinan Vehicle hardtop lift
CN113107171A (zh) * 2021-03-19 2021-07-13 浙江东鹰装饰工程有限公司 一种室内吊顶板材安装装置
CN113882633A (zh) * 2021-08-30 2022-01-04 中铁十六局集团城市建设发展有限公司 一种吊顶龙骨架上安装矿棉板用自动化施工设备及方法

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