Loading and unloading device for handling trolley

1. A loading and unloading device for an industrial truck ( 62 ), said industrial truck ( 62 ) including a loading platform ( 26 ), said loading and unloading device comprising:

a removable base ( 10 ) with dimensions matching those of the loading platform ( 26 ) of the truck ( 62 ), in which said base ( 10 ) has a generally planar upper face ( 12 ) capable of receiving goods ( 32 ) and surrounded by a peripheral border ( 14 ) for holding the goods ( 32 ),

a lower face ( 16 ) designed to hold said base ( 10 ) on the loading platform ( 26 ) of the truck ( 62 ); and

four lateral faces ( 18 , 20 ) connecting said upper face ( 12 ) and said lower face ( 16 ); said lateral faces ( 18 , 20 ) of said base ( 10 ) include two opposite large lateral faces ( 18 ) connected to large sides of said upper face ( 12 ) and two opposite small lateral faces ( 20 ) connected to small sides of said upper face ( 12 );

wherein said base ( 10 ) is equipped with locking members ( 76 ; 86 ) arranged respectively along two adjacent lateral faces ( 18 , 20 ) in order to join said base ( 10 ) to at least one adjacent base ( 10 ) and wherein each of said locking members ( 76 ; 86 ) includes at least hooks secured to a pivot pin ( 78 ; 88 ) and capable of being moved between a retracted position in which it is retracted into said base ( 10 ) and an extended position in which it projects from said base ( 10 ) so as to be engaged in a respective recess ( 82 ) of an adjacent base ( 10 );

wherein said base ( 10 ) also includes a longitudinal passage ( 38 ) leading into said two small lateral faces ( 20 ), said longitudinal passage ( 38 ) is made in the form of a tunnel which leads over its entire length to said lower face ( 16 ), and which is delimited between two longitudinal base elements ( 40 ) of said base ( 10 ), wherein said base elements ( 40 ) are connected respectively to said two large lateral faces ( 18 );

wherein said peripheral border ( 14 ) includes an internal face ( 28 ) that is perpendicularly connected to said upper face ( 12 ) of said base ( 10 ) and an upper edge ( 30 ) that connects said internal face ( 28 ) to said lateral faces ( 18 , 20 ).

2. A loading and unloading device according to claim 1 , characterized in that said base ( 10 ) includes a peripheral groove ( 22 ) formed at a junction of said lower face ( 16 ) and said lateral faces ( 18 , 20 ).

3. A loading and unloading device according to claim 2 , characterized in that said peripheral groove ( 22 ) is sized so as to fit into a peripheral frame ( 24 ) of the loading platform ( 26 ) of the truck ( 62 ) in order to position and hold said base ( 10 ) on the peripheral frame ( 24 ).

4. A loading and unloading device according to claim 2 , characterized in that said peripheral groove ( 22 ) of a first base ( 10 ) is capable of being fitted into said peripheral border ( 14 ) of a second base ( 10 ) located immediately below said first base ( 10 ) in a stack of superimposed bases ( 10 ).

5. A loading and unloading device according to claim 1 , characterized in that said base ( 10 ) also includes at least one transversal passage ( 42 ) leading into said two large lateral faces ( 20 ).

6. A loading and unloading device according to claim 5 , characterized in that said base ( 10 ) includes two transversal passages ( 42 ) that each lead into said two large lateral faces ( 18 ) through respective general rectangular openings ( 44 ).

7. A loading and unloading device according to claim 1 , characterized in that said base ( 10 ) includes at least one recess ( 46 ) formed respectively in one of said lateral faces ( 18 , 20 ) so as to enable a fastening strap ( 48 ) to pass.

8. A loading and unloading device according to claim 7 , characterized in that said recess ( 46 ) leads upward into said peripheral border ( 14 ) and downward into an attachment hole ( 52 , 54 ) of said corresponding lateral face ( 18 , 20 ), arranged to receive a hook of the fastening strap ( 48 ).

9. A loading and unloading device according to claim 8 , characterized in that said recess ( 46 ) has a flared shape from said attachment hole ( 52 , 54 ) of said lateral face ( 18 , 20 ) in the direction of said peripheral border ( 14 ).

10. A loading and unloading device according to claim 1 , further comprising a continuous peripheral groove ( 56 ; 92 ) formed on said lateral faces ( 18 , 20 ) below said peripheral border ( 14 ).

11. A loading and unloading device according to claim 10 , characterized in that said continuous peripheral groove ( 56 ; 92 ) forms, on each of said lateral faces ( 18 , 20 ), a recess for receiving a link rod ( 54 ; 94 ) connected to fastening straps ( 70 ).

12. A loading and unloading device according to claim 11 , characterized in that said continuous peripheral groove ( 56 ; 92 ) forms a holding recess for the link rod ( 54 ; 94 ) when the fastening straps ( 70 ) are under tension.

13. A loading and unloading device according to claim 1 , characterized in that said hook is arranged in a recess ( 80 ) provided in an end foot ( 74 ) of said base ( 10 ).

14. A loading and unloading device according to claim 1 , characterized in that said pivot pin ( 78 ; 88 ) has at least one end lever ( 84 ; 90 ) capable of being actuated so as to move said locking member ( 76 ; 86 ) from one to the other of the retracted position and the extended position.

15. A loading and unloading device according to claim 1 , characterized in that said base ( 10 ) is formed in one piece by molding a plastic material.

16. A loading and unloading device according to claim 1 , characterized in that said base ( 10 ) has a general rectangle shape with dimensions of around 600 mm×400 mm.

17. A loading and unloading device according to claim 1 , characterized in that the said base ( 10 ) has a height of around 150 mm.