Device for lifting a load resting on a conveyor  

Research Title: Device for lifting a load resting on a conveyor

Research Category: Conveyor System

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Researchers: Gosse, Michel (SOSPI 14-16, rue de la Baume, Paris, F-75008, FR)
Location: paris, France

Research Details

Abstract:
Abstract of EP0549447 Abstract of EP0549447
Device for lifting a load (5) resting on a conveyor, said the conveyor including two longitudinal members (1, 2), parallel to the drive direction of the conveyor and supporting members (3, 4) for driving the deposited loads, the lifting device comprising a platform (7) located between the said two longitudinal members and equipped with a raising architecture (13 to 20) intended to support the said load (5) to be elevated and whose upper end, in the low position of the platform ( 7), is located at a level below that of the said drive members, said the platform being connected to the said conveyor by four chains (23 to 36) from which it is suspended, characterized in that one end of each chain is fixed to a longitudinal member (1, 2) of the conveyor and in that the other end of each chain is fixed to a driving pinions (32 to 35), the driving pinions being coupled to motor means (40), the pinions and motor assembly means being supported by the said platform (7).
  Claims:
1. Device for lifting a load (5) disposed on a conveyor, said conveyor including two longitudinal members (1, 2) parallel to the direction in which the conveyor is driven and supporting members (3, 4) for driving along said conveyor loads deposited thereon , The lifting device including a platform (7) situated between said two longitudinal members and equipped with a lifting architecture (13 to 20) adapted to support said load (5) to be lifted and the top of which, in the bottom position of the platform (7), is at a level lower than said drive members, said platform being connected to said conveyor by four chains (23 to 26) from which it is suspended, characterized in that one end of each chain is fixed to a longitudinal member (1, 2) of the conveyor, the other end of each chain is fixed to a driving sprocket wheel (32 to 35), the driving sprocket wheels are coupled to drive means (40) and the combination of the sprocket wheels and the drive means is supported by said platform (7).
2. Device according to claim 1 characterized in that the four driving sprocket wheels (32 to 35) are mounted on a single drive shaft (36) at the front of the platform and perpendicular to the direction of said longitudinal members (1, 2), said shaft (36) carries two at each end of said driving sprocket wheels (32, 33 and 34, 35) to each of which is coupled a chain one of which (23, 25) runs vertically and is attached to a corresponding member and longitudinal the other of which (24, 26) initially runs horizontally parallel to the longitudinal members (1, 2), then passes around a sprocket wheel (43, 44) at the rear of the platform, and then runs vertically before being attached to the longitudinal member, the horizontal chain runs resting on the bottom of the platform on respective sliding paths (45, 46).
3. Device according to claim 1 or claim 2 characterized in that said lifting architecture comprises four vertical columns (13 to 16), two columns (13, 14) at the front of the platform are joined at the top by a crossmember (17) and two columns (15, 16) at the rear of the platform are joined at the top by a crossmember (18).
4. Device according to claim 3 characterized in that at least two columns (13, 16) in diagonal relationship to each other are guided on up and down movement of the platform by guide shoes (47, 48) joined to the longitudinal members (1, 2 ).
5. Device according to claim 3 or claim 4 characterized in that at a short distance from the top the two lateral columns of each pair of columns are joined together by a beam (19, 20).
6. Device according to any one of the preceding claims characterized in that each chain is fixed to a longitudinal member by a fixing part (27) and a screwthreaded rod (28 to 31) for adjusting the length of the chain.
Description:
The present invention relates to a lifting of a load on a conveyor ready.
We know such a lifting system using a ready platform between stringers conveyor, the platform is equipped with its four corners of a column and the four columns are collected by their upper end of the ties. A string is attached to each corner of the plateau and the four chains pass on gables referral related conveyor that also supports the system of motorization. The uplift of the plateau by traction chains helps to raise the load, eg a pallet, loaded or not, prepared on the conveyor and taken by the upper end of the four columns. In low shelf, the upper end of the four columns is obviously at a level below that of the training conveyor chains or rollers. This system with four channels pending which is hung a platform guarantees of horizontality of the platform in all its positions. However, this system requires a ballast of the platform and a non-standard conveyor system with a special engine and sprockets for reference.
This invention aims to propose a simple and to maintain a standard conveyor while retaining the benefits of the four channels.
The invention has the purpose device for lifting of a load on a conveyor ready, the conveyor with two stringers, parallel to the direction of the conveyor training and supporting training bodies charges filed, the device including a lifting platform between the two so-called stringers and equipped with an architecture enhancement to bear the burden and raise the upper end of which, in the position of the platform, is located at a level lower than those bodies training, the platform is connected by four audit conveyor chains with which it is suspended, wherein one end of each string is attached to a spar of the conveyor and what the other end of each string is attached to a gable leading, gables menants being coupled with means motors, sprockets and all means engines are supported by that platform.
According to a preferred implementation, the four gables menants are mounted on a single shaft on the front of the platform perpendicular to the direction of the stringers on the tree at each of its two so-called gable ends menants each of which is hung a string one of which undergoes a simple vertical path and just hang on to spar correspondent and the other suffered a first course parallel to the horizontal stringers to pass on a referral gable on the back of the platform and then a second vertical paths to come cling to spar, the chain along its horizontal route based on the merits of the platform, on a sliding path.



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