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
  • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
  • B66F7/22—Lifting frames, e.g. for lifting vehicles; Platform lifts with tiltable platforms
• • 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
  • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
  • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
• • 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
  • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
  • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
  • B66F3/247—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated pneumatically actuated
• • 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
  • B66F5/00—Mobile jacks of the garage type mounted on wheels or rollers
  • B66F5/04—Mobile jacks of the garage type mounted on wheels or rollers with fluid-pressure-operated lifting gear
• • 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
  • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
  • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Definitions

• the field of the invention is that of lawn mowing machines or any other herbaceous surface, and their accessories.
• the invention relates to a device for lifting and / or tilting on the side a riding mower, a thermal mower or an electric mower, or any other similar machine, for cleaning the cutting blades and / or the cleaning of the guard, maintenance operations, for example sharpening the blades, or repairs.
• tilting carrier structure for lifting at least two wheels of the mower.
• Two types of known tilting load bearing structures are very conventionally used: single pivot arm structures and parallelogram structures, consisting of two pivoting arms connected by a horizontal table.
• a disadvantage of these known techniques is that they require physical force to lift or tilt the mower, especially if the weight of the mower is important. They are therefore not suitable for frail or weak users, and / or in the case where the mower is heavy. They are generally of a heavy use, and / or are not very ergonomic, which is not satisfactory. To limit the efforts of the user, it was thought to operate the hoist with a jack.
• Document FR-A-2,873,107 describes such an example of a technique using a flexible jack or a rigid piston rod jack exerting a thrust under the pivoting arm of the frame to ensure its tilting.
• Another disadvantage of this technique is that it requires the implementation of specific cylinders, and for example a large rod cylinder or a telescopic rod cylinder.
• Another disadvantage of this technique is that the user is likely to inadvertently actuate the decline of the cylinder when it comes under the mower, which is not acceptable in terms of safety.
• the invention therefore particularly aims to overcome the disadvantages of the prior art mentioned above.
• the invention aims to provide a lifting device and / or tilt providing effective assistance to lifting.
• An object of the invention is also to provide such a technique which releases a significant access under the mower.
• Another object of the invention is to provide such a technique that is simple to implement, and a reduced manufacturing cost.
• An object of the invention is also to provide such a technique which is compact and easy to store.
• Yet another object of the invention is to provide such a technique which is reliable, safe and safe for the user.
• a lifting device and / or tilting of a grass mowing machine including a riding mower, comprising a frame member fixed, intended to rest on the ground, and a frame member adapted to receive at least one wheel of said machine, movable about an axis carried by said fixed frame member, between a storage position in which said movable frame member extends substantially in the plane formed by said fixed frame member, and at least one raised position wherein said movable frame member is spaced apart from said fixed frame member.
• such a device comprises a jack, having a body secured to said fixed frame member and a rod movable relative to said body, integral with said movable frame member, mounted so as to extend substantially outside the the area delimited by said fixed and mobile frame members in said raised position.
• the invention proposes to implement a jack to facilitate the lifting of the machine, and / or its tilting on the side, which does not impinge on the useful area to the user to intervene under the craft.
• a jack to facilitate the lifting of the machine, and / or its tilting on the side, which does not impinge on the useful area to the user to intervene under the craft.
• said movable frame member is configured to fit into said fixed frame member, in said storage position.
• the device forms a compact assembly in the storage position, which facilitates its storage. Furthermore, the reduced height of the chassis in the storage position, also called low position, facilitates the rise of the wheels of the machine on the mobile frame.
• said axis is mounted substantially above the plane formed by said fixed frame member.
• said movable frame member has an "L" square shape, whose angle is truncated.
• chassis member can be rested flat on the ground.
• said jack is secured near said axis to said fixed and movable frame members.
• such a device has at least one retractable stand secured to said movable frame member and bearing on said fixed frame member to lock the movable frame member in at least one of said raised positions.
• said movable frame member comprises a frame configured to receive said wheel or wheels, and a stop extending substantially perpendicularly to said frame.
• Such a device is adapted or at least adaptable, for example by means of extensions, to different sizes of gear.
• said cylinder is actuated by a pedal or a lever.
• the user does not have to stoop to operate the cylinder, and he keeps one or both hands free to hold the machine, if any.
• said jack is single acting.
• said jack belongs to the group comprising at least:
• Figure 1 shows in perspective, and schematically, an embodiment of a lifting device and / or tilting according to the invention in a raised position
• FIG. 1 details the device shown in Figure 1, seen from the rear;
• Figure 3 is a side view of the device shown in Figure 1;
• Figure 4 illustrates the device shown in Figure 1 in storage position, in a side view;
• Figure 5 is a top view of the device shown in Figure 1, in the storage position.
• the principle of the invention is based in particular on the mounting of a lift cylinder of the pivoting frame member of a device “lawn mower” outside the area delimited by the frame members fixed and movable device “lawn mower”, so as to interfere as little as possible when the user intervenes under the mower.
• FIG. 1 shows a first embodiment of a lifting and / or tilting device 10 according to the invention of a riding mower 11, in a perspective view.
• This device 10 comprises a fixed frame element 12, resting on the ground carrying an axis 13, elevated with respect to the ground, for example seventeen centimeters in this embodiment of the invention, around which is articulated in rotation a movable frame member 14, shown in a raised position in FIG.
• the riding mower 11 whose rear wheels 111 rest on a portion of the frame 141 of the movable frame member 14, is tilted to the side in this raised position. There is thus a wide access under the mower, to clean the cutting blades and to break the cutting deck 112, for example.
• the fixed frame member 12 comprises a metal frame 121 welded in this embodiment of the invention, defining a plane for the element 12.
• This frame 121 extending vertically by two tabs 21 supporting the tubular bearing 22, in which is housed the axis 13, as it appears more clearly in Figure 2, seen from the rear. It should be noted that the length of the frame 121 must be sufficient to ensure the stability of the device 10.
• the movable frame member 14 has an "L" square shape. It is obtained by welding, or by any other suitable method known assembly, a frame 141 forming a cradle for the rear wheels of the mower, with two metal angles 23, oriented substantially perpendicularly to the frame 141 and which form a stop side supporting the lowest wheel.
• the articulation of the movable frame member 14 on the fixed frame member 12 is achieved by bolting the ends of the pin 13 to the brackets 23, which form a fork for the pin 13.
• frame 141 is tabular frame, so as not to damage the wheels when rolling the mower on it. Furthermore, the length of the frame 141 was determined according to the impasto of the rear wheels.
• a single-acting cylinder 24 actuable by means of a pedal 25 is mounted between the fixed frame member 12 and the movable frame member 14, passing under the axis 13.
• the body 241 of this jack is attached to the fixed frame member, near the axis 13, and the end of the piston rod 242 of this jack is pivotally mounted about an axis 210 housed in a fork extending from the frame 141. It is thus clear from the simple view of this FIG. 2 that the rod of this jack exerts a thrust on the lower face of the movable frame member 14, which makes it possible to pivot it upwards or downwards. by a simple actuation of the cylinder 24 (whose effect is to advance or respectively back the rod 242 relative to the body 241 of the cylinder).
• Two side stands 27 have been provided to lock the movable frame member 14 in this maximum raised position, in which the frame 141 of the movable frame member 14 is spaced at an angle of about 49 ° from the frame. 121 (see Figure 3, which is a side view of the device 10), and prevent abrupt lowering thereof.
• a first end of these stands is pivotally mounted on one or the other angles 23.
• Their second end is supported on the rear cross member 26 of the frame 121, which ensures the locking.
• This second end presents in this embodiment of the invention a notched notch to strengthen the support on the cross 121, obtained from a section of square section.
• crutches are further connected by a rollbar forming a handle 28, in order to easily retract the crutches 27 before begin lowering the movable frame member 14 from the maximum raised position.
• the device 10 is shown from the side in its storage position (low position), following the tilting in the direction of the arrow 41 of the movable frame member 14 to the ground level, obtained releasing the cylinder. It can be seen on the vertical section of FIG. 4 that the lower face of the frame 141 of the movable frame element rests completely on the ground, after it has come to fit, because of its width, in the frame. 121 of the fixed frame member (see the device in plan view Figure 5). The frame 141 does not protrude above the frame 121, the device 10 thus has a particularly compact and flat appearance in the storage position, appreciable in view of the storage of the device and facilitating the rise of the wheels of the machine on the frame 141 .
• a lifting device and / or tilting such as those described above by simple provisions constructive that will appear directly and without undue effort to the skilled person, so that it can be used for the lifting of any self-propelled machine, including a motor vehicle, for example a motorcycle or a car. More generally, the invention can be applied to the lifting and / or tilting of any heavy object.
• a movable frame element making it possible to rest three or four wheels and / or to form a lifting assembly for the wheels of a self-propelled machine.
• two substantially identical devices for lifting and / or tilting according to the invention respectively disposed at the height of the rear axle and the front gear of the machine, and connected by a rigid connecting bar.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Geology (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Harvester Elements (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (2)

Family

ID=42237157

Family Applications (1)

Country Status (7)

Family Cites Families (33)

• 2009
  • 2009-10-10 FR FR0904861A patent/FR2951150B1/fr not_active Expired - Fee Related
• 2010
  • 2010-04-06 AU AU2010304954A patent/AU2010304954B2/en active Active
  • 2010-04-06 WO PCT/FR2010/050663 patent/WO2011042629A1/fr active Application Filing
  • 2010-04-06 PL PL10723213T patent/PL2485977T3/pl unknown
  • 2010-04-06 DE DE10723213.4T patent/DE10723213T1/de active Pending
  • 2010-04-06 US US13/501,221 patent/US9067772B2/en active Active
  • 2010-04-06 EP EP10723213.4A patent/EP2485977B1/de active Active

Non-Patent Citations (1)

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