FR2483899A1 - VIBRATORY CARRIER - Google Patents

Abstract

THE INVENTION RELATES TO A BALANCED VIBRATORY CONVEYOR. THIS CONVEYOR INCLUDES A MATERIAL TRANSPORT ELEMENT 11 MOUNTED IN A ARTICULATED MANNER ABOVE A BASE 15 AND CONNECTED BY A CONTROL ROD 30 TO A BALANCING ELEMENT 14 WHICH IS ALSO MOUNTED IN A ARTICULATED MANNER BELOW THE BASE 15. THE CONNECTING ROD 30 IS ARTICULATED AT AN INTERMEDIATE POINT 33 ON THE BASE 15. THE CONNECTIONS BETWEEN THE CONNECTING ROD 30 AND THE MATERIAL TRANSPORT ELEMENT 11, ON THE ONE HAND, AND THE BALANCING ELEMENT 14, ON THE OTHER PART, HAVE ELASTIC ORGANS ALLOWING TO REDUCE THE STARTING TORQUE REQUIRED FROM THE MOTOR 40 OF THE CONVEYOR 10. FIELD OF APPLICATION: CONTINUOUS HANDLING EQUIPMENT.

Description

1. 2483899

  Vibratory conveyors of a certain

  length are used in many applications.

  When the length is large, it is not uncommon to balance, at least to a certain extent, the vibratory forces generated, in particular their horizontal components, by means of a balancing element which is subjected to a phase shift vibration. about 1800 relative to that of the element of transport of the material. In the normal case, an eccentric shaft mechanism and crank arm is implemented for controlling the trough carrying the material and the same mechanism or mechanism

  analogy is used to control the balance element.

  libration, the vibrations of the latter being out of phase with those of the element carrying the

material.

  According to the invention, the material transport member is mounted by means of a plurality of articulated arms on a base member. A balancing element is also carried by the base member, by means of other articulated arms and a number of force transmission springs are

  arranged between the transport element and the equi-

  librage. An eccentric shaft / crank arm mechanism is used to vibrate the material transport member and to vibrate in counter-phase the balance element by means of a control rod, the carrier being able to use several of these rods. The control rod or rods are articulated by their upper ends on the material transport element and, at their lower ends, on the balancing element, the intermediate section of each control rod being articulated with the fixed base. . Thus, when the transport element of the material moves in a first direction,

  the balancing element is driven in the opposite direction.

  To reduce the starting torque or the requested starting power, an elastic connection is made between the crank arm and the transport trough; a second elastic connection is made between the transport trough and the control rod; and a third link

2. 2483899

  elastic is performed to connect the opposite end of the

  control rod to the balancing element.

  - The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting example and in which: - Figure 1 is an elevation, partially broken away, of the vibratory conveyor according to the invention; - Figure 2 is a vertical section along the line 2-2 of Figure 1; and FIG. 3 is a vertical section along line 3-3 of FIG.

Figure 1.

  The figures show the vibratory conveyor 10 according to the invention, which comprises a trough 11 comprising a bottom 12 and side walls 13. The vibratory conveyor comprises an elongate balancing element 14 and an elongate element 15 base. The base element is mounted on suitable supports 16 located at each of its ends. If desired, an intermediate support such as that shown in 16a may also

to be used.

  The upper ends 18 of several arms 17 are articulated on the base and the lower ends 19

  these arms are articulated on the balancing element.

  Several second arms 20 are fixed by their upper ends 21 to the lower face of the trough 11 and are articulated by their lower ends 22 on the base. All the arms 17 and 20 are parallel to each other and

  form an acute angle with the horizontal.

  Several force transmission spring assemblies, indicated generally at 23, are mounted between the trough and the balancing element. These assemblies comprise consoles or supports 24 of springs attached to the trough and spring support brackets 25 fixed to the balancing element. Intermediate elements 26 of reaction are arranged between the consoles. Several first coil springs 27 (compression) are arranged between the brackets 24 and the reaction elements 26 and several second coil springs 28 (compression) are arranged

2483899

3.

  between the support brackets and the intermediate elements

  reaction 26. As shown in the figures, the axis of the coil springs 27 and 28 is perpendicular to

the direction of the arms 17 and 20.

  The vibratory apparatus comprises one or more control rods such as the control rod 30 whose upper end 31 is articulated on the trough and whose lower end 32 is articulated on the balancing element. The intermediate section of the connecting rod 30 of

  control is articulated at 33 on the base element 15.

  The control rod 30 is connected at 31 to the trough and at 32 to the balancing element by resilient connections which may be of the type described in US Pat. No. 3,677,395. Figure 3, the control rod 30 extends between two vertical plates 34 mounted on the element 14 balancing. Two annular rubber members 35 of toric shape are arranged between the plates and the lower end 32 of the control rod so that their faces are pressed against the plates 34 and against the control rod 30 by a bolt 36. The upper end of the control rod is connected at 31 to the underside of the trough by means of two rings 37 of rubber, identical to the rings -35, and arranged between plates 38 fixed to the trough and the faces external of the control rod, the assembly being

held by a bolt 39.

  To communicate a vibrating motion to the conveyor, a motor 40 is used which is mounted on the base and drives a belt 41 which passes over a wheel 42 mounted on an eccentric shaft 43. A crank arm 44 is resiliently connected to mounting members located on the

lower face of the trough 11.

  As shown in FIG. 2, two plates 45 extend downwards from the lower surface of the trough 11. The outer ends of the crank arm 44 have plane zones 46 between which and the plates 45 are arranged rubber rings 47. similar to rubber rings or toroids. A bolt 48 holds the assembly

  crank arm drive in the assembled state.

  When starting the apparatus, the connection between the crank arm and the trough is damped or made elastic by the interposition of the rubber rings 47 so that the trough can move a certain distance less than the full range of motion of the crank arm. The reduced movement of the trough is further reduced by the presence of the elastic rubber rings 37 in the connection between the trough and the control rod 30, and the movement transmitted to the trolley 10. an even weaker movement of the balancing element 14 thanks to the presence of the rubber rings in the elastic connection between the connecting rod and this balancing element. Therefore, it is possible to implement a weaker motor to control the device, since the requested start torque is

  significantly reduced, this imposing starting torque normal-

  the highest load on the engine.

  It is advantageous to equip spring-spring assemblies 27 and 28 having a stiffness giving these assemblies a natural frequency that is slightly greater than the frequency of the vibrations communicated by the motor, the eccentric shaft and the crank arm. which further reduces

  the load demanded from the electric motor.

  It goes without saying that many modifications can be made to the carrier described and represented

  without departing from the scope of the invention.

5.

Claims (3)

  1. - vibratory conveyor, characterized in that it comprises a base (15), a balancing element (14) disposed below the base, several arms (17) each articulated by an upper end (18) on the base and a lower end (19) on the balancing element, a material transport element (11) located above the base, a plurality of second arms (20) each hinged by an upper end (21). on the material transport member and at a lower end (22) on the base, a plurality of force transmission spring assemblies (23)   each fixed at one end to the balance element   and at the other end to the material transport member, the spring assemblies being arranged to form an angle of less than 900 with the horizontal and being oriented approximately perpendicularly to the arms, a connecting rod (30). articulated by its upper end (31) on the material conveying element and its lower end (32) on the balancing element, members (33) by means of which the control rod is hinged, between its ends, on the base, and a motor device (40) for communicating a vibratory movement to the element of material transport.   2. - vibratory conveyor, characterized in that it comprises an elongated base (15), an elongate element (14) balancing disposed below the base, several arms (17) arranged along the base and articulated each by an upper end (18) on the base and a lower end (19) on the balancing element, an elongated material transporting member (11) disposed above the base, a plurality of second arms (20), and ) arranged along the base and each articulated by an upper end (21) on the material transport member and a lower end (22) on the base so that all the arms are oriented parallel to each other and at a certain angle to the horizontal, a plurality of force-transmitting spring assemblies (23) each fixed at one end to the balancing element and at the other end to the material-conveying element, these assemblies at 6. 2483899   springs being arranged to form an angle of less than 900 with the horizontal and being oriented approximately perpendicular to the arms, a connecting rod (30) articulated by its upper end (31) on the material transport element and by its lower end (32) on the balancing element, members (33) by means of which the control rod is articulated, between its ends, on the base, an eccentric shaft (43), mounted so as to able to rotate on the base, a crank arm (44) which resiliently connects the shaft to the material transport member, and   a motor device (40) for rotating the shaft.   Vibratory conveyor characterized in that it comprises an elongated base (15), an elongated balancing element (14) disposed below the base, and several arms (17) arranged along the base and articulated each by an upper end (18) on the base and a lower end (19) on the balancing element, an elongated material transporting member (11) disposed above the base, a plurality of second arms (20). arranged along the base and each articulated by an upper end (21) on the material transport member and a lower end (22) on the base, all the arms being oriented parallel to each other and forming a at a certain angle to the horizontal, a plurality of force-transmitting spring assemblies (23), each having a first end attached to the balancing element and the other end attached to the material-carrying member, springs ant arranged so as to form an angle less than 90   with the horizontal and being oriented approximately   Cultively to the arms, a connecting rod (30) which is elastically articulated by its upper end (31) on the material transport element and by its lower end (32) on the balancing element, bodies (33). ) by means of which this connecting rod is articulated between its ends on the base, an eccentric shaft (43) which is rotatably mounted on the base, a crank arm (44) elastically connecting the shaft to the element transporting material, and an engine device (40) for rotate the tree.