EP0257033A1 - Dispositif de montage et procede de demontage d'un mat elevateur. - Google Patents

Dispositif de montage et procede de demontage d'un mat elevateur.

Info

Publication number
EP0257033A1
EP0257033A1 EP86903007A EP86903007A EP0257033A1 EP 0257033 A1 EP0257033 A1 EP 0257033A1 EP 86903007 A EP86903007 A EP 86903007A EP 86903007 A EP86903007 A EP 86903007A EP 0257033 A1 EP0257033 A1 EP 0257033A1
Authority
EP
European Patent Office
Prior art keywords
shaft
end portion
aperture
support
disposed
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.)
Granted
Application number
EP86903007A
Other languages
German (de)
English (en)
Other versions
EP0257033B1 (fr
Inventor
James W Erker
Michael J Scotese
Jay B Stotts
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.)
Caterpillar Industrial Inc
Original Assignee
Caterpillar Industrial Inc
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 Caterpillar Industrial Inc filed Critical Caterpillar Industrial Inc
Publication of EP0257033A1 publication Critical patent/EP0257033A1/fr
Application granted granted Critical
Publication of EP0257033B1 publication Critical patent/EP0257033B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • B66F9/082—Masts; Guides; Chains inclinable

Definitions

  • This invention relates generally to a mounting arrangement for pivotally connecting a lift mast to a frame, and more particularly to a work vehicle having a lift mast and a mounting arrangement for pivotally connecting the lift mast to a support flange and frame of the work venicle, and a method for disconnecting the lift mast from the work vehicle.
  • a high visibility mast is one which has substantially no obstructions disposed between the inner uprights of the mast at a location adjacent to the line of sight of the operator and one in which the inner uprights are tightly nested adjacent respective outer uprights and a substantial distance apart from one another.
  • a mounting arrangement for pivotally connecting a lift mast to a vehicle having a frame member is provided.
  • support flange having first and second opposed sides is connectable at the first side to the vehicle frame member, and a spindle having a first end and a spindle axis is connected at the spindle first end to the support flange second side.
  • a shaft having first and second
  • a first apparatus pivotally connects a first end portion of a lift mast upright guide member to the shaft, a second
  • work vehicle has a vehicle frame member having first and second opposed portions, a lift mast having a pair of spaced apart upright guide members, and first and second support flanges having first and second opposed sides.
  • the first support flange first side is
  • First and second spindles each having a spindle axis and a first end are connected at the first end to the second
  • First and second shafts each having first and second spaced apart end portions and first and second spaced apart ends and a longitudinal axis extending between the first and second ends are provided.
  • a first apparatus pivotally connects the first end portion of one of the upright members to the first shaft and the first end portion of the othar upright member to the second shaft.
  • the first and second support flanges each have an aperture opening at the first side and the first shaft first end portion is disposed in the aperture of the first support flange and slidably engaged with the first flange surface and the second shaft first end portion is disposed in the aperture of the second support flange and slidably engaged with the second flange surface.
  • First and second support brackets each having first and second spaced apart sides and an aperture opening at said first and second spaced apart sides are provided.
  • the apertures are defined by a surface and the first shaft second end portion is supportingly engaged with the aperture defining surface of the first support bracket and the second shaft second end portion is supportingly engaged with the aperture defining surface of the second support bracket.
  • a first fastener connects the first shaft second end portion to the first support bracket and a second fastener connects the second shaft second end portion to the second support bracket.
  • the first and second fasteners maintain the first and second shafts, respectively, from movement along their axis and relative to the first and second support flanges.
  • the method of an embodiment of the present invention includes the steps of supporting the lift mast assembly, removing a first fastener from connection with a first shaft and a first support bracket, removing a second fastener from connection with a second shaft and a second support bracket, connecting a source of pressurized fluid flow to a first fitting mounted on the first shaft, directing pressurized fluid flow from the source to an aperture disposed in a first support flange and urging the first shaft to move in a direction substantially along an axis of the first shaft, towards the first support brackets, and to a location at which the first end portion of the first shaft is free from being disposed in the aperture and free from engagement with a surface defining the aperture, connecting the source of pressurized fluid to a second fitting mounted on the second shaft, directing pressurized fluid flow from the support source to an aperture disposed in a second support flange and urging the second shaft to move in a direction substantially along an axis of the second shaft, toward the second support bracket, and to a location at which the
  • Fig. 1 is a partial diagrammatic isometric view of an embodiment of the present invention showing a front portion of a frame member, lift uprights of a lift mast assembly, portions of a drive axle assembly, and a mounting arrangement for pivotally connecting the lift mast assembly to the vehicle frame;
  • Fig. 2 is a partial enlarged diagrammatic top elevational view of Fig. 1 having portions broken away for clarity and showing in greater detail a portion of the lift mast assembly, the mounting arrangement, and the frame member, including the first support flange and a portion of the spindle;
  • Fig. 3 is a side view taken along lines III-III of Fig. 2 showing the mounting arrangement, one of the first lift mast uprights, the first support flange, and frame member, in greater detail;
  • Fig. 4 is a partially exploded diagrammatic cross-sectional view taken along lines IV-IV of Fig. 1 showing the mounting arrangement, first and second passages in the first and second shafts, respectively, first and second fluid connections, and a fluid
  • ICC operated system connectable to the fittings for providing pressurized fluid flow to force the first and second shafts toward disconnected positions shown in phantom.
  • a work vehicle 10 has a frame member 12 and a lift mast assembly 14 which is pivotally connected to the frame member.
  • vehicle 10 is preferably a lift truck; however, other vehicles suitable for mounting a lift mast assembly thereon are to be considered within the field of usage.
  • the lift mast assembly 14 is of the high visibility type and has first and second pairs of
  • the lift mast assembly 14 has a carriage 20, a pair of spaced apart lift jacks 22 (only one shown) , and a pair of forks 24 (only one shown) .
  • the second pair of upright guide members 18 is mounted on and
  • lift mast assembly 14 oetween the first pair of upright guide members by rollers 26 and elevationally movable relative to the first pair of upright guide members 16.
  • the carriage 20, upon which forks 24 are mounted in any conventional or suitable manner, is connected to the second pair of 5 spaced apart upright guide members by rollers 28 and elevationally movable relative to the second pair of upright guide members 18.
  • the viewing window for the vehicle operator which is defined by the space between the second pair of upright guide members 18, must be substantially clear of obstructions by other mast components. Therefore, lift jacks 22 are positioned substantially behind the upright guide members 16,18 and in a location so that a line of sight of the vehicle operator is not obstructed by the lift jacks 22.
  • Lift jacks 22 are operatively connected to and between the first and second pairs of uprights in any suitable and customary manner. Telescopic movement of the lift jacks 22 will cause elevational movement of the second pair of uprights 18 relative to the first pair of uprights 16.
  • a lift chain and sheave arrangement (not shown) is operatively connected to the lift mast assembly 14 in a usual and customary manner and to the carriage 20 and first pair of uprights 16. Tne aforementioned telescopic movement of the lift jacks 22 will also result in elevational movement of the carriage 20 through the chain and sheave arrangement, in a conventional manner.
  • t e chain and sheave arrangement as well as fluid carrying hoses, brackets, and the like (all not shown) must be spaced from the window of the lift mast and out of the line of sight of the vehicle operator.
  • the chain and sheave arrangements, fluid carrying hoses, and brackets and the like must be disposed at a location closely nested adjacent the first and second pairs of uprights 18,16.
  • a tie member 30 serves as a connector and spacer for the first pair of upright guide members 16, and a support base for the lift jacks 22. It is to be noted that the placement of the lift jacks 22 behind the upright guide members 16,18 reduces the amount of open and available space normally provided between the frame member 12 and the uprights of the lift mast assembly 14.
  • a mounting arrangement 32 is provided for pivotally connecting the lift mast assembly 14 to frame member 12. Specifically, the mounting arrangement 32 pivotally connects each of the upright guide members of the first pair 16 to frame member 12 at a location closely adjacent the frame member 12 and vehicle wheels 34.
  • each upright of the first pair of upright guide members is closely adjacent an end of the work vehicle (frame member 12) and a respective one of the pair of the vehicle wheels 34.
  • the distance from the front of the vehicle to the lift mast assembly 14 will determine the load moment, and the distance between the second pair of upright guide members 18, which is limited by the distance between the vehicle wheels 34, will determine the maximum amount of visibility for the vehicle operator. Placing the mast assembly 14 in front of, over, or outside the wheels 34 is inappropriate since it will adversely affect vehicle maneuverability and operation.
  • the mounting arrangement 32 has a first support flange 36 which has first and second sides 38,40, and a second support flange 42 which has first and second sides 44,46.
  • the first support flange first side 38 is connected to a first end portion 48 of the frame member 12 and the second support flange first sid- ⁇ 44 is connected to the second end portion 50 of the ⁇ _.ante' ember 12.
  • frame member 12 is a rectangularly shaped box like structure and the first and second end portions are at locations add cent opposite sides of the vehicle 10.
  • the frame ..ember 12 is suited for mounting a differential 52 within the box like structure.
  • a first jack shaft 54 extends from the differential 52 past the first end portion 48 of the frame member and through an aperture 56 disposed in an opening on the first and second sides 38,40 of the support flange.
  • a second jack shaft 58 extends from the differential 52 past the second end portion 50 of the frame member 12 and through an aperture (not shown) disposed in the second support flange 42 and opening at the first and second sides 44,46 thereof.
  • a first wheel drive arrangement 60 has a ring gear 62 which is engaged with a pinion gear 64 mounted on the first jack shaft 54.
  • the ring gear 62 is rotatably mounted on a first spindle 66 which is secured to the second side 40 of first support flange 36 in any suitable fashion, such as by fasteners 68.
  • a pair of- anti-friction bearings 70 support the ring gear 62 for rotation on the first spindle 66 in a conventional manner.
  • the pinion gear 64 transmits rotary motion and power from the first jack shaft 54 to the ring gear 62.
  • a cover 72 is secured to the second side 40 of the first support flange 36 in. any suitable fashion such as by threaded fasteners 74.
  • the cover overlies the ring gear 62 and includes a seal 76 for preventing lubricant from leaking from the area disposed between the cover 72 and first support flange 36.
  • a brake drum 78 of conventional design is secured to the ring gear 62 for rotation therewith. Wheel 34 is secured to the brake drum 78 in a usual and customary manner.
  • an equivalent second wheel drive arrangement (not shown) is mounted on the second side 46 of the second support flange 42 for transmitting rotary motion from the second jack shaft 58 to the other wheel of the pair of wheels 34.
  • a second spindle 80 (Fig. 4) is connected to the second side 46 of the second support flange 42 in any suitable manner, for example, by threaded fasteners 68.
  • the first and second support flanges 36 and 42 each have annular flanges 81 for mounting and sealing purposes with the first and second spindles 66 and 80.
  • a first end surface 82 of the first spindle 6G is engaged with the second side 40 of the first support flange 36 at the annular flange 81 and connected thereto by fasteners 68 so that a tight seal is provided.
  • a first end surface 84 of the second spindle 80 is sealingly engaged with the second sid « 46 of the second support flange 42 at the annular flange 81 and connected thereto by fasteners 68.
  • the first and second spindles 66 and 80 each have an axis 86 about which the wheels 34 rotate.
  • the axis 86 is oriented transverse of a longitudinal vehicle axis 88 and preferably normal to the axis 88.
  • a first shaft 90 having first and second spaced apart end portions 92,94 and first and second ends 96,98 and a longitudinal axis 100 extending between the shaft first and second ends is provided for pivotally connecting a first end portion 102 of one of the uprights of the first pair 16 to the frame member 12.
  • a second shaft 104 having first and second spaced apart end portions 106,108 and first and second spaced apart ends 110,112 and a longitudinal axis 114 extending between the first and second ends 110,112 is provided for pivotally connecting a first end portion 116 of the other upright of said first pair of uprights 16 to the frame member 12.
  • a first means 118 is provided for pivotally connecting the first upright end portion 102 to the first shaft 90 and the first end portion 116 to the second shaft 104.
  • the first means preferably includes first and second blocks 120,122 each having first and second spaced apart sides 124,126 and a bore 128 opening at said first and second sides 124,126.
  • the first block 120 is rigidly secured at one end 129 to the first upright first end portion 102 and the second block 122 is rigidly secured at one end 129 to the first end portion 116 of the other upright guide member of the first pair 16.
  • the first shaft 90 is disposed in bore 128 of the first block 120 so that the first and second ends 96,98 of the first shaft 90 extend past the first and second sides 124,126 respectively of the first block.
  • the second shaft 104 is disposed in the bore 128 of the second block 122 with the first and second ends 110,112 of the second shaft extending beyond the first and second sides 124,126 respectively of the second block 122.
  • a bearing 130 (Figs. 2 and 4) is disposed in bore 128 in each of the first and second blocks 122,124.
  • the bearings 130 engage the first and second shafts 90,104 and enables the lift mast to be pivoted about the shaft axis 100,114 without causing wear of the first and second blocks 120,122 or first and second shafts 90,104.
  • the bores 128 and shafts 90,104 could be heat treated so that anti-friction bearings 130 would not be required.
  • a second means 132 is provided for connecting the first end portion 92 of the first shaft 90 to the first support flange 36 and for guiding the first shaft 90 for slidable axial movement along its axis 100 and in directions substantially parallel to the axis 86 of the first spindle 66 and for connecting the first end portion 106 of the second shaft 104 to the second support flange 42 and guiding the second shaft 104 for slidable movement along its axis 114 in directions substantially parallel to the axis 86 of the second spindle 80.
  • the second means 132 includes a first aperture 134 disposed in the first support flange 36 at a preselected radial location spaced from the axis 86 of the first spindle 66 and a second aperture 136 disposed in the second support flange 42 at a preselected radial distance spaced from the axis 86 of the second spindle 80.
  • the first and second apertures 134,136 are located in front of the frame member 12 and between the frame member 12 and the lift mast assembly 14.
  • the first aperture 134 preferably extends through the first support flange 36 and opens at the first and second sides 38,40 thereof.
  • the second aperture 136 is disposed through the second support flange 42 and opens at the first and second sides 44,46 of a second support flange 42.
  • Each of the first and second apertures 134,136 are defined by a cylindrical surface 138.
  • the cylindrical surface 138 of the first aperture 134 supports the first end portion 92 of the first shaft 90 and preferably slidably guides the first end portion for axial movement relative to the spindle axis 86.
  • the cylindrical surface 138 of the second aperture 136 engages the first end portion 106 of the second shaft 104 and guides the second shaft 104 for slidable axial movements in directions parallel to the axis 86.
  • the first end portion 92 of the first shaft has a cylindrical outer surface having a diameter of a preselected magnitude and the cylindrical surface 138 of the first aperture 134 has a diameter of a magnitude equal to or greater than the diameter of the first end portion 92 of the first shaft 90.
  • the diameter of the cylindrical surface 138 defining the second aperture 136 has a diameter of a preselected magnitude and the diameter of the cylindrical outer surface of the first end portion 106 of the second shaft 104 has a diameter equal to or smaller in magnitude than the magnitude of the second aperture 136.
  • a third means 140 is provided for connecting the second end portion 94 of the first shaft 90 to the vehicle frame member 12 and maintaining the first shaft from slidable axial movement in directions substantially parallel to the spindle axis 86 and relative to the first side 38 of the first support flange, and for connecting the second end portion 108 of the second shaft 104 to the vehicle frame member 12 and maintaining the second shaft 104 from slidable axial movement in directions substantially parallel to the spindle axis 86 and relative to the first side 44 of the second support flange 42.
  • the third means includes first and second support brackets 142,144 each having first and second spaced apart sides 146,148 and an aperture 150 opening at the first and second spaced apart sides 146,148 of each of the support brackets 142,144.
  • the apertures 150 are defined by a " surface 152 which is cylindrically configured.
  • the aperture 150 opening at the first and second sides of the support brackets 142,144 it also opens at an upper end portion 154 of the first and second support brackets 142,144.
  • the second end portion 94 of the first shaft 90 is disposed in the aperture 150 of the first support bracket and in contact with the surface 152 thereof.
  • the second end portion 108 of the second shaft 104 is disposed in the aperture 150 of the second support bracket 144 and engageable with the surface 152. It is to be noted that the second end portions 94,108 are cradled by the cylindrical surface 152 and supported by the first and second brackets so that axis 100 and 114 of the first and second shafts 90,104 are parallel to the axis 86 of the first and seco:nd_ spindles 66 and 80. Thus, pivotal movement of the. Lift mast about the first and second shafts 90,104 will, be- free from undesirable loading caused by improper axial alignment of the shafts relative to one another.
  • the third means 140 also includes means 156 for fastening the second end portion 94 of the first shaft 90 to the first support bracket and for fastening the second end portion 108 of the second shaft 104 to the second support bracket 144.
  • the fastening means 156 includes a first fastener 158 which is disposed in a radially extending bore 160 in the second end portion 94 of the first shaft and screwthreadably engaged in a threaded aperture in the first support bracket and a second fastener 162 disposed in a radially extending bore located at the second end portion 108 of the second shaft 104 and screwthreadably engaged in a threaded bore disposed in the second support bracket 144.
  • each of the first and second shafts 90,104 have a flat cutout surface 166 against which the first and second fasteners 158,162 bear.
  • the first and second fasteners 153,162 maintain and prevent the first and second shafts 90,104" from movement along axis 100,114, respectively, and relative to first and second support flanges 36,42.
  • the distance between the first side 146 of the first support bracket 142 and the first side 38 of the firs support flange 36 must be smaller in magnitude than the length of the first shaft 90 in order to mount the first shaft 90. Also, this distance must be greater in magnitude than the distance between sides 124 and 126 of block 120 to permit straddling thereof.
  • the distance between the first side 146 of the second support bracket 142 and the first side 44 of the second support flange 42 must be smaller in magnitude than the length of the second shaft 104 and greater in magnitude than the width of block 122.
  • Mounting arrangement 32 enables the lift mast assembly to be mounted closely adjacent the vehicle frame 12 at the front of the vehicle 10 and closely adjacent the first and second support flanges 38,42 so that a high visibility lift mast assembly may be utilized.
  • Means 168 passes pressurized fluid flow into said first and second apertures 134,136 at a location between the first end 96 of the first shaft 90 and the second side 40 of the first flange 36, and the first end 110 of the second shaft 104 and the second side 46 of the second support flange 42.
  • the passing means 168 preferably includes a first passage 170 disposed in the first shaft 90 and opening at the first end 96 and opening at a location 171 spaced from the first end 96, and a second passage
  • a pair of fittings 174,176 each having an inlet end portion 178 and an outlet end portion 180 are adapted to pass fluid from the inlet end portion 178 to the outlet end portion 180.
  • the outlet end portion 178 of the first fitting 174 is connected to the first shaft 90 at the location of the opening 171 from the first end 96
  • the outlet end portion 180 of the second fitting 176 is connected to the second shaft 104 at the location of the opening 173 spaced from the first end 110 of the second shaft 104.
  • Fittings 174 and 176 are suitable for passing pressurized fluid delivered from a source of pressurized fluid flow 182, for example, a gear pump, piston pump, vane pump, grease gun, and the like to passages 170 and 172, respectively.
  • Source 182 directs pressurized fluid flow to a selected one of the first and second fittings 174,176 via a conduit 184 and a connector 186.
  • the connector 186 is positionable on he inlet end portion 178 of either of the first and second fittings 174,176 and retained thereon by a pair of jaws 188 which are biased in an inward direction.
  • the first end 82 of the first spindle 66 covers the first aperture 134 of the first support flange 36.
  • the mounting arrangement -32 provides a unique, simple, and efficient way of pivotally connecting the lift mast assembly 14 to the frame 12 of the vehicle 10. Because the first and second support flanges 36,42 and the cylindrical surface 138 of the first and second apertures 134,136 provide support and guidance for the first and second shafts 90,104, the ability to utilize a high visibility mast and improve visibility for the vehicle operator is made possible.
  • the first and second support brackets 142,144 and the fastening means 156 retains the first and second shafts 90,104 at the desired location with respect to the first and second support flanges 36,42 and permits ease of release of the second end portions 94,108 of the first and second shafts 90,104 for removal purposes.
  • a method for disconnecting the lift mast assembly 14 from the work vehicle 10 is provided. First, the lift mast assembly is supported from tipping and elevational movement by an overhead hoist or the like. Then the first fastener 158 is screwthreadably removed from connecting the first shaft 90 to the first support bracket 142, and the second fastener 162 is screwthreadably removed from connecting the second shaft 104 to the second support br'acket 144 in any suitable manner such as with a wrench.
  • the source of pressurized fluid flow 182 is connected to the first fitting 174 mounted on the first shaft 90.
  • Pressurized fluid flow from the source 182 is directed (such as by opening a valve, actuating the pump 182, or the like) to aperture 134 disposed in the first support flange 36 which urges the first shaft 90 to move along axis 100 toward the first support bracket 142, and to a location 5 at which the first end portion 92 of the first shaft 90 is free from being disposed in the first aperture 134 and free from engagement with a surface 138.
  • the source 182 is then connected to the second fitting 176 mounted on the second shaft 104. Pressurized fluid
  • the first end poi'cion 106 of the second shaft 104 is free from being disposed in the second aperture 136 and free from engagement with the surface 138 of aperture 136.
  • the lift mast assembly 14 is then removed from the work vehicle 10 such as by the hoist.
  • the passing means 168 enables the first and second support flanges 36,42 to be used to support the first and second shafts 90,104. This is permitted because of the unique method by which the first and second shafts 90,104 are removed.
  • the mounting arrangement 32 permits the use of -a high visibility mast on a smaller and/or narrower vehicle than usual while maximizing the load carrying capacity of the vehicle due to the closeness of the lift mast to the
  • fastening means 156 positively retains the first and second shafts 90,104 and eliminates the potential of inadvertent loosening of the first and second shafts 90,104.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

Un dispositif de montage (32) permettant d'assembler un mât élévateur (14) à un véhicule de travail (10) sont difficiles d'accès, placent le mât élévateur (14) par rapport à l'avant du véhicule à une distance supérieure à celle désirée, limitent la distance entre le premier et le second éléments de la seconde paire d'éléments de guidage verticaux (18) du mât élévateur et rendent difficile le détachement du mât élévateur du véhicule. Le dispositif de montage ci-décrit (32) comprend un premier appareil (118), destiné à assembler de façon pivotante une première partie d'extrémité (102) de l'élément de guidage vertical (16) du mât élévateur à un premier arbre (90), un second appareil destiné à assembler une première partie d'extrémité (92) du premier arbre (90) à un premier collier de support (36) et guider le premier arbre (90) en vue de son mouvement coulissant dans des directions substantiellement parallèles à un axe de roues (86), et un troisième appareil (140), destiné à assembler une seconde partie d'extrémité (94) du premier arbre (90) à un élément (12) du cadre du véhicule et à empêcher le premier arbre (90) d'effectuer un mouvement axial coulissant par rapport au premier collier de support (36). Un dispositif (168), destiné à faire passer du fluide pressurisé dans un logement situé entre la première extrémité (96) du premier arbre (90) et un second côté (40) du collier de support, est prévu, afin d'obliger le premier arbre (90) à se détacher du premier collier de support (36). Les inconvénients mentionnés ci-dessus se rapportant à l'accessibilité, à la visibilité, à la capacité de charge et au démontage sont ainsi réduits. Le dispositif de montage (32) est particulièrement destiné à être utilisé sur un chariot élévateur à fourche (10).
EP19860903007 1986-02-24 1986-04-24 Dispositif de montage et procede de demontage d'un mat elevateur Expired - Lifetime EP0257033B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83249586A 1986-02-24 1986-02-24
US832495 1986-02-24

Publications (2)

Publication Number Publication Date
EP0257033A1 true EP0257033A1 (fr) 1988-03-02
EP0257033B1 EP0257033B1 (fr) 1990-02-07

Family

ID=25261822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860903007 Expired - Lifetime EP0257033B1 (fr) 1986-02-24 1986-04-24 Dispositif de montage et procede de demontage d'un mat elevateur

Country Status (5)

Country Link
EP (1) EP0257033B1 (fr)
JP (1) JPS63502422A (fr)
CA (1) CA1268147A (fr)
DE (1) DE3668875D1 (fr)
WO (1) WO1987005000A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5052881A (en) * 1990-11-28 1991-10-01 Caterpillar Industrial Inc. Bearing mounting arrangement for a lift mast
CN110861995B (zh) * 2019-11-13 2021-02-02 唐兴华 连体滚轮机构、移动装置及升降机

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
GB191401321A (en) * 1914-01-17 1914-07-02 John Henry Aubrey Stapley An Improved Method of and Means for Opening Bottles.
US3127956A (en) * 1954-02-25 1964-04-07 Clark Equipment Co Lift truck
FR1179620A (fr) * 1957-02-19 1959-05-27 Yale & Towne Mfg Co Structure perfectionnée pour chariot industriel
DE1141945B (de) * 1959-07-18 1962-12-27 Esslingen Maschf Hublader mit neigbar sowie loesbar am Fahrgestell gelagertem Hubmast
DE1275498B (de) * 1967-12-08 1968-08-22 Eickhoff Geb Schraemmeisselbefestigung, insbesondere fuer Schraemwalzen
GB1246846A (en) * 1968-11-15 1971-09-22 Lipton Products Ltd Improvements relating to fork lift trucks
US3782571A (en) * 1972-04-24 1974-01-01 Towmotor Corp Lift truck mast-mounting arrangement
GB1491473A (en) * 1975-08-01 1977-11-09 Hudswell Badger Ltd Materials handling equipment
JPS606076Y2 (ja) * 1977-04-27 1985-02-25 日産自動車株式会社 フオークリフトのマスト支持構造
US4100988A (en) * 1977-05-09 1978-07-18 Towmotor Corporation Vehicle including differential mounting
US4126208A (en) * 1977-08-12 1978-11-21 Towmotor Corporation Adjustable lock for mast hanger
US4126209A (en) * 1977-08-12 1978-11-21 Towmotor Corporation Mast mounting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8705000A1 *

Also Published As

Publication number Publication date
WO1987005000A1 (fr) 1987-08-27
DE3668875D1 (de) 1990-03-15
JPS63502422A (ja) 1988-09-14
CA1268147A (fr) 1990-04-24
EP0257033B1 (fr) 1990-02-07

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