FR2909079A1 - Bulk product e.g. industrial waste, accumulating and transferring device, has lifting platform for supporting base and equipped with elevating system, where system varies height of base between bottom and top positions - Google Patents

Abstract

The device has a bore (2) for accumulating products and comprising loading and unloading zones (12, 14). An alternative moving base (4) is placed in the bore and moves the products located above the loading zone towards the unloading zone. A lifting platform (6) supports the base and equipped with an elevating system (8). The elevating system varies the height of the base between a bottom position and a top position. Independent claims are also included for the following: (1) an installation comprising a bulk product accumulating and transferring device (2) an assembly comprising an installation and a vehicle (3) a method for accumulating and transferring bulk products.

Description

1 Device and method for accumulating and transferring bulk products

  The invention relates to a device and a method for the accumulation and transfer of bulk products, in particular of the various types of waste, recycled products, wood and derivatives, and products from the agribusiness (wheat, maize, etc.). ). The invention aims in particular to provide a buffer storage of household or industrial waste between collection vehicles and transport semi-trailers. This waste can be abrasive, of various forms, possibly aggressive in form or chemically. According to the invention, the device comprises: a cell intended to accumulate the products and having a loading zone and an unloading zone; an alternating moving floor disposed in said cell and adapted to move the products arranged above the zone; loading to the unloading area, and - a lifting table supporting the alternating moving floor and provided with an elevation system for varying the height of the alternating moving floor between a low position and a high position. Thus, it is possible to dump the bulk goods by gravity from a collection vehicle on the alternating moving floor, to store them until they are in sufficient quantity to fill a transport vehicle of large capacity, or that such a vehicle is available, then to get them up to bring them over the vehicle to pour them by gravity. Thus, without having to carry out civil engineering operations, the collection vehicles are allowed to dump the bulk products above the alternating moving floor and the transport vehicles to recover them below the alternating moving floor. The device can therefore be quickly implemented in a field dedicated to this purpose without generating significant work and therefore the field can be made more easily in the same state without substantial work. In addition, the use of complex or bulky means for raising loose products is avoided. Moreover, the alternating moving floor is a particularly robust means that is well suited to moving bulk products with a certain aggressiveness. According to another characteristic according to the invention, the alternating moving floor is formed of at least three groups of contiguous sliding metal bars. This solution is efficient, robust and suitable for multiple bulk products.

According to another characteristic according to the invention, the alternating moving floor is draining. This prevents the cell from being soiled under the alternating moving floor, particularly in the case of chemically aggressive fluids.

According to another characteristic according to the invention, when the device is placed on a horizontal ground and the alternating moving floor is in the low position, the alternating moving floor is advantageously inclined between the loading zone and the unloading zone. said unloading area being located higher than the loading area. Thus, the bulk products are partially raised by the alternating moving floor, which reduces the height which the lift table must raise the alternating floor.

According to a complementary characteristic, the elevation system advantageously varies the loading zone and the unloading zone substantially of the same height.

Thus, the device is relatively simple and robust, and the effectiveness of the alternating moving floor for moving the bulk products is identical in the up position and in the low position of the alternating moving floor. Preferably, the inclination of the alternating moving floor is between 5% and 10%, when the device is placed on a horizontal floor and the alternating moving floor is in the low position. Thus, the bulk products can be substantially raised by the alternating moving floor without unduly altering the effectiveness of the reciprocating floor to move bulk products because of the slope of the reciprocating floor. According to another characteristic according to the invention, the device furthermore advantageously comprises a hatch disposed in the unloading zone and movable between an active position in which it makes it possible to accumulate the products in said cell and an inactive position in which it authorizes the transfer of products out of said cell.

Thus, the bulk products can be stacked near the unloading zone, possibly out of the alternating moving floor, and the quantity of bulk products that can be stored in the cell without risking that they come out unexpectedly. is increased.

According to another characteristic according to the invention, the device advantageously furthermore comprises means for weighing the products accumulated in the cell.

Thus, it can be determined whether the quantity of bulk goods for filling a transport vehicle is reached. The invention also relates to an installation 5 comprising, in addition to the aforementioned device, an access platform comprising a ramp rising up to the proximity of the alternating moving floor in the loading zone. Thus, by raising the collection vehicle on the ramp, it can more easily be located above the alternating moving floor to pour by gravity the bulk products it contains. The invention also relates to an assembly comprising, in addition to said installation, a vehicle comprising a top loading aperture adapted to be disposed under the unloading zone when the alternating moving floor is in the up position and can not be placed under the unloading when the alternating moving floor is in the down position. Thus, the unloading of bulk products is optimized for the transport vehicle. The invention further relates to a method of accumulating and transferring bulk products, comprising successively the following steps: a) pouring the bulk products into a cell, 25 into a loading zone, b) moving the products to a unloading area, while keeping the products inside the cell, c) raising the unloading area, 30 d) transferring the products from the unloading zone (14) out of the cell, e) lowering the unloading area. According to the invention, the method advantageously also has the following characteristics: in step a), the products are poured by gravity from a bucket, and during step d), the produced by gravity in a transport vehicle.

The loading and unloading of products is thus fast and requires few means. between steps c) and d), the transport vehicle is placed under the unloading zone, and in step d), the products are transferred from the unloading zone to the transport vehicle, and between steps d) and e), the transport vehicle is moved away from the unloading area. Thus, bulk products should only be elevated to a height sufficient for the transport vehicle to be underneath when the unloading area is high. According to the invention, the method advantageously also has the following features: prior to step a), a skip containing said products is mounted on a removable access platform, and in step a ), the products of the bucket are poured into the cell. Thus, dumping of the bucket is facilitated and the access platform can be easily moved. According to another characteristic in accordance with the invention, the quantity of products in the cell is also advantageously detected and if the quantity of products is greater than a threshold, step c) is carried out.

Thus, the transport vehicle can be automatically loaded without waiting. Other features and advantages of the present invention will become apparent from the following detailed description with reference to the accompanying drawings in which: Figure 1 is a perspective view of an installation according to the invention in low positicn; Figure 2 is a plan view of the plant in the down position; FIG. 3 is a perspective view of the plant in the up position, and FIG. 4 is a plan view of the plant in the up position, FIGS. 5A, 5B, 5C, 5D, 5E illustrate the operation of the alternative moving floor of the installation. Figures 1 to 4 illustrate a device 1 15 essentially comprising a cell 2, an alternating moving floor 4 and a lifting table 6. The cell 2 extends in a rectilinear direction between a loading zone 12 and an unloading zone 14 It consists essentially of a base 36, side walls 38 and an upper cover wall 40. It further comprises, in the unloading zone 14, a hopper 42 for unloading extended downwards by flexible flaps 44. The hopper 42 can be closed by a horizontal flap 16, 25 slidably mounted relative to the base 36 of the cell and actuated by a cylinder 17. The alternating moving floor 4 is carried by the cell 2. It extends between the loading zone 12 and the unloading zone 14. It is inclined and advantageously draining (relatively fluid-tight), so as to drain the liquids escaping from the waste which it is responsible for storing and moving towards the Unloading 14. Thus, said liquids flow due to the inclination of the alternating moving floor to a collecting tank and do not soil the cell 2 under the alternating moving floor 4. As illustrated in FIGS. 5A, 5B, 5C, 5D, 5E, the alternating moving floor 4 is advantageously constituted by a succession of longitudinal bars 46, preferably metal (in particular aluminum), arranged side-by-side sliding in the longitudinal direction Dinale. The bars 46 are divided into three groups (minimum) of bars 46A, 46B, 46C integral 10 actuated by cylinders (not shown) and succeeding in a direction transverse to the longitudinal direction. As shown in Figure 53, to advance the waste 48, the three groups of bars 46A, 46B, 46C move simultaneously to the unloading area 14 by one increment, for example about twenty centimeters. The waste 48 therefore moves in this increment, as illustrated by the arrow 50. As illustrated in FIGS. 5C, 5D and 5E, the three groups of bars 46A, 46B, 46C return successively to the loading zone. , moving the same distance (same increment). The groups of bars moving successively (only one group at a time) and each group representing less than half of the surface of the alternating moving floor, this then causes it to move no waste 48. Therefore, at each cycle of moving the groups of bars 46A, 46B, 46C the waste moves an increment of the loading zone 12 to the unloading zone. The lifting table 6 comprises a base 24 resting on the ground 10, a plate 30 and an elevation system 8 for varying the height of the plate 30 relative to the base 24. The elevation system consists of rods 26 articulated forming braces and hydraulic cylinders 28 moving the plate 30 parallel to the base 24 of the lifting table 6.

2909079 8 A ramp 3 is interposed between the base 36 of the cell 2 and the plate 30 of the lifting table 6, so that the alternating moving floor 4 has a constant inclination relative to the base 24 of the lifting table 6, preferably between 5 and 10 advantageously the angle imposed by the ramp 3 between the alternating moving floor 4 and the base 24 of the lifting table 6 is close to 5 degrees. Thus, when the device 1 and in particular the base 24 of the lifting table rests on a horizontal ground 10, the alternating moving floor has the aforementioned slopes and inclinations. Weighing means 18 are interposed between the ramp 3 and the plate 30. The weighing means 18 determine the mass of waste disposed on the alternating moving bottom 4 by subtracting the mass detected in the absence of waste. An access platform 20 formed by a removable metal box is disposed near the unloading zone 12. It has a ramp 22 for lifting a refuse collection bucket 32, in order to directly discharge the contents of the dumpster. The lifting table 6 is controlled by gravity on the alternating moving floor 4 in the loading area 12. The reciprocating floor 4 is placed in a low position illustrated in FIGS. 1 and 2. The alternating moving floor 4 then presents a height h12 in the loading zone 12 and a height h14 in the unloading zone 14 with respect to the ground 10 on which the device 1 rests.

After having measured the mass in the absence of waste constituting the tare for the weighing means, it then brings successively refuse dumps 32 on the access platform 20 to dump their contents on the alternating moving floor 4 by gravity in the loading zone 12. The side walls 38 of the cell 2 and the opening formed through them form a loading hopper. As the waste is dumped on the alternating moving floor 4, the waste is advanced towards the unloading zone 14.

When the mass of waste corresponding to the capacity of a transport vehicle 34 of semi-trailer type or the like is reached, a signal is emitted and after an operator's command or possibly automatically, after verifying the absence of obstacle 10 around the cell 2, the lifting table 6 raises the cell 2 in the high position, as shown in Figures 3 and 4. The alternating moving floor 4 then has a height H12 in the loading area 12 and a height H14 in the unloading zone 14 relative to the ground 10 on which the device 1 rests. The lifting table 6 generating a translation of the cell 2, the elevation of the cell 2 in the loading zone 12 corresponding to the difference between the heights H12 and h12 is equal to the elevation of the cell 2 in the unloading zone 14 corresponding to the difference between the heights H14 and h14. The height H14 of the alternating moving floor 4 is such that when the reciprocating moving floor 4 is in the up position, the transport vehicle 34 can position its loading opening 35 under the hopper 42. When the presence of the transport vehicle 34 under the hopper 42 is detected, the opening of the hatch 16 is controlled to the cylinder 17. The transport vehicle 34 is advantageously provided with a similar alternating moving floor to the bottom 4, to move and distribute the waste within the loading volume during unloading of waste by the hopper 42. During unloading, the alternating moving floor 4 is operated to move the waste from the loading area 12 to the unloading area 14 where it is unloaded. in the transport vehicle 34 via the hopper 42. The flaps 44 guide the waste to the loading aperture 35 of the transport vehicle 34.

When the transport vehicle 34 is full, it is brought away from the unloading zone 14, and when the absence of obstacles around the cell 2 is detected, the return of the cell 2 in position bass is controlled at the lift table 6.

A new loading cycle of the cell 2 by refuse dumps 32 and the unloading of the cell 2 in transport vehicles 34, as just described can then begin. In order to further automate the operation of the installation, provision may be made for detecting the presence of waste on the alternating moving floor 4 in the loading zone 12, so as to automatically put the reciprocating floor 4 into operation for move the waste to the unloading zone 14. The shutdown of the alternating moving floor can be controlled by the detection of an absence of waste in the loading zone 12 or the arrival of the waste in the unloading zone 14. Furthermore, as shown in FIG. 3, in order to secure the installation, a protective barrier is provided around the device 1. Preferably, the access ramp makes it possible to raise the refuse collection hopper 34. about one meter, the difference between the height h12; H12 of the reciprocating moving floor 4 in the loading zone 12 and the height h14; H14 of the alternating moving floor 4 in the unloading zone 14 is between 0.5 and 2 meters, the lifting table 6 can raise the cell about 2 to 3 meters and the height under the hopper 42 when the Cell 35 is in the high position is between 4 and 5 meters.

Claims (15)

  Apparatus (1) for accumulating and transferring bulk products, comprising: a cell (2) for accumulating products and having a loading zone (12) and an unloading zone (14), an alternating moving floor (4) disposed in said recess (2) and adapted to move the products arranged above the loading zone (12) towards the unloading zone (14), and to a lifting table (6) supporting the alternating moving floor (4) and provided with an elevation system (8) for varying the height of the alternating moving floor (4) between a low position and a high position. 15   2. Device according to claim 1, wherein the alternating moving floor (4) is formed of at least three groups (46A, 46B, 46C) of bars (46) sliding metal contiguous.   3. Device according to claim 1 or claim 2, wherein the alternating moving floor (4) is draining.   4. Device according to any one of the preceding claims, wherein when the device (1) is disposed on a floor (10) horizontal and 25 that the alternating moving floor is in the low position, the alternating moving floor (4) is inclined between the loading zone (12) and the unloading zone (14), said unloading zone (14) being situated higher than the loading zone (12). 30   5. Device according to claim 4, wherein the inclination (a) of the alternating moving floor is between 5% and 10%, when the device (1) is disposed on a floor (10) horizontal and the moving floor alternative (4) is in the down position. 2909079 12   6. Device according to any one of claims 4 or 5, wherein the elevation system (8) varies the loading area (12) and the unloading area (14) of substantially the same height.   7. Device according to any one of the preceding claims, further comprising a hatch (16) disposed in the unloading zone (14) and movable between an active position in which it allows to accumulate the products in said cell (2) and an inactive position in which it authorizes the transfer of the products out of said cell (2).   8. Device according to any one of the preceding claims, further comprising weighing means (18) accumulated products in the cell (2).   9. Installation comprising a device according to any one of claims 1 to 8, and an access platform (20) comprising a ramp (22) rising to near the alternating moving floor (4) in the area of loading (12).   10. An assembly comprising an installation according to claim 9 and a vehicle (34) comprising a loading opening (35) on top able to be arranged under the unloading zone (14) when the alternating moving floor is in the up position and can not be arranged under the unloading zone (14) when the alternating moving floor (4) is in the low position.   11. Method of accumulation and transfer of bulk products, comprising successively the following steps: a) pouring the bulk products into a cell (2), in a loading zone (12), b) moving the products to a unloading zone (14), while keeping the products inside the cell, c) raising the unloading zone (14), 2909079 13 d) transferring the products from the unloading zone (14) out of the (2), e) lowering the unloading zone (14).   12. The method of claim 11, wherein: during step a), the products are poured by gravity from a bucket (32), and in step d), the products are poured by gravity in a transport vehicle.   13. The method of claim. 12, in which: between steps c) and d), the transport vehicle (34) is located under the unloading zone (14), and in step d) the products of the unloading zone (14) to the transport vehicle (34), and ù between steps d) and e), the transport vehicle (34) is moved away from the unloading zone (14).   The method of claim 12 or claim 13, wherein: prior to step a), a skip (32) containing said products is mounted on a removable access platform (20), and where in step a), the products of the bucket (32) are poured into the cell (2). 25   15. Method according to any one of claims 11 to 14, wherein the quantity of products is also detected in the cell (2) and if the quantity of products is greater than a threshold, step c) is carried out. . 30