SU39360A1 - A device for serving public canteens - Google Patents

Description

The proposed device relates to already known devices for serving public canteens, consisting of a main conveyor for transporting dishes that are stopped at a given place, and of an additional conveyor belt, which serves to remove soiled dishes. According to the invention, the central distributor used in such a device for stopping and starting the main conveyor, made in the form of a drum switch, is composed of a series of pivot levers mounted on a cylinder rotated by a conveyor belt and a series of supports located on a fixed axis of the cylinder along a helical line and bearing contacts controlled by the levers and included in the motor circuit or motor control circuit in such a way that they automatically control the motor circuit together and agree Vanno with switch E mounted on the conveyor belt and actuated severity dishes installed on the tape. According to the embodiment, the said supports also carry electromagnets for controlling the contacts installed on the same supports.

The principal design of the proposed device is explained in the drawing.

where FIG. 1 depicts the location of conveyor belts and dining tables; FIG. 2 is the same in the plan, and here one of the possible arrangements of the engine and the central distributor is shown; FIG. 3, 4-design of the central distributor in the first embodiment in the longitudinal and transverse partial cuts; FIG. 5-electrical wiring diagram in the first embodiment; FIG. b is a side view of a part of the main conveyor belt, including the link on which the dishes are placed; FIG. 7 is a section of this link along the line AB in FIG. eight; FIG. 8 is a top view of this link; FIG. 9 and 10 depict the structure of the central distributor according to the second variant in partial longitudinal and transverse sections; FIG. П - 13 - construction of one of the distributor contacts in three projections; FIG. 14, 15 —the design of the link of the conveyor belt carrying the switch, according to the second embodiment, in two projections with partial cuts; FIG. 16 is a wiring diagram of the second embodiment.

The electric motor / through the transmission 2 (Fig. 1, 2) is connected with the drive axis 3 of the main conveyor belt 4; last by transferring 5 is connected to the drive axis

auxiliary conveyor belt ё serving to remove soiled dishes. On both sides of the conveyor 4, b are installed dining tables 7, 7 ... and chairs 8, 8 ... for visitors. The conveyor passes inside the vestibule 9, in the walls of which there are windows / О for removing the dish arrived at the table and 7 / for placing dirty dishes on the lower conveyor belt. The beginning of the conveyor is located in the kitchen room / 2, where the central distributor / 5 is installed, which is rotated from the conveyor.

The conveyor belt 4 consists of two chains connected by links M, 14 ..., onto which dishes 15, 15 are placed ... The conveyor belt 6 can be made in the form of an endless rubber band resting on two drums and supported by rollers protection from sagging. At the end of the belt 6 a shield can be installed to receive dirty dishes. The direction of movement of the conveyor belts 4 vi 6 is shown in FIG. 1 arrows.

The central distributor (Fig. 3,4) is made in the form of a drum switch, on a fixed axis 16 of which the supports 17, 17 ... are located along a helical line, and the contacts are fixed 19, 19 ... and movable 20, 20 ... The latter are set pivotally on the axles 21, 21 ..., loaded with the switching springs and held in the on position by the latches 22, 22 ..., also under the action of the springs and pivotally mounted on the axes 23, 23 ... on the same supports 17, 17 ... In addition, fixed supports 24, 24 ... of signal circuits, closed by contacts 20, are installed on the supports, 20 ... after opening the contacts 19, 19 ...

All contacts 19, 19 ... are connected (Fig. 3 and 5) in series and included in the engine circuit 7; The conductors 25, 26 extending from the last of the contacts 19, 19, pass through the opening 27 in the axis 16, which is made hollow.

On the axis 16, a cylinder 25 is mounted for free rotation, composed of two end discs 29, 29 supporting rods 30, 30 ... on which the levers 31, 31 ...

These levers are arranged in rows both along the cylinder lines and the circumferences, and can be installed in a vertical position (as shown in Fig. 4), in which they interact with latches 22, 22 ...

The number of supports 77, 77 ... equals the number of tables 7, 7 ... The number of strips 30, 30 ... is equal to the number of supports 77, 77 ... The number of levers 31, 31 ... on each plank is also equal to the number of supports 77 , 77 ... Thus, if any of the levers 57, 57 ... is placed in a vertical position and then the conveyor is started, then the cylinder 28, rotated from the conveyor by means of, for example, a gear train, at some point will act by the indicated lever 57 on the latch 22 of one of the supports 77, 17.,., as a result of which proper switching will occur. The distributor is set in such a way, and the transfer to it is so proportioned that this moment comes just as the dish approaches the destination.

Link 14, 14 ..., the connecting chains of the main conveyor belt 4, consist of transverse strips 32, 32 (Fig. 8), which actually connect the chains. These bars in some of the links carry supports 55, 55 ... for the installation of dishes. Bearing 55 has in its center a button 34 loaded with a spring 35 and a supporting movable contact 36. The spring 55 is located in the supporting cylinder 57. The bearing 55 carries a fixed contact 38 which is in normal position in contact with contact 36.

Contacts 36 and 38 are connected by wires 39 and, respectively, 40 to spring contacts 4J and, respectively, 42, sliding on contact tires 43, 43 ... and, respectively, 44, 44 ...; These buses are located at each of the tables 7, 7 ... Tires 44, 44 ... are connected (FIG. 5) electrically to the wire 4) of the supply network, the other wire 46 of which is connected to the wire 26 and to the wire 47 to which is connected one of the ends of the winding of all electromagnets 18, 18 ... distributor. The tires 43, 43 ... are connected, each separately, by wires 48, 48 ... with the other ends of the windings of the electromagnets 18, 18.

The device operates as follows. Let it be necessary to submit dishes

to any of the tables 7, 7 ..., for example, to the first and the fifth, in order, counting from the kitchen 12 to the other end of the conveyor. For this purpose, the handles of the two respective levers 57, 31, .. located on that of the bars Jf, 30 ... which are in the initial position marked in one way or another, are placed in a vertical position on the distributor. Then put the plates on the supports 33, 33 of the two links of the tape 4, which are in kitchen 12. At the same time, the contacts 36 and 38 of the respective supports are open under the influence of the weight of the plates. Then close the switch 49. The motor circuit 1 closes through the contacts 19, 19 ... and 20, 20 ..., and the engine will come into rotation, and the conveyor 4 will move the plates along the tables 7, 7 ... However, it will rotate and the cylinder 28 of the distributor. At that moment, when the first plate approaches the first table, the corresponding lever 31 will press the latch 32 and release contact 20; the latter will turn and open its pair of contacts 19, 19. As a result, the circuit of the engine 7 will open and the conveyor 4 will stop. At the same time, in contacts 24, 24 ..., connected by contact 20, the signal circuit (lamp, bell or the like) located at the first table is closed, and the diner can take a fed dish through window 10. As soon as the plate is removed from the support 33, the contacts 36 and 38 are closed; this will turn out to be a closed circuit of the corresponding electromagnet 18: the wire 45 of the network, the field 44 at the first table, contact 42, the contacts 38, 36, contact 41, the wall 43 at the first table, the wire 48, the electromagnet winding 18, the wires 47 and 46. The electromagnet 18 will energize and turn contact 20; the latter will open the contacts 24, 24 in the signal circuit and close the contacts 19, 19 in the engine circuit 7, and the latch 22 prohibits contact 2 (; the engine 7 will automatically rotate and will move the conveyor further until the second of the installed levers 31 will act in a similar way on the latch 22 corresponding to the order of support 77. Then the conveyor automatically

stop and stand until the plate is removed. As soon as this happens, the conveyor will automatically move.

To get lunch in the canteen equipped with the proposed device, you can set the following order for getting meals: the person who wants to get lunch must take the cashier’s check at the cash register, sit at any table in the empty space, put the table number on the checks, using the stamp assigned to it this table and fastened on it using a chain or cord to avoid theft; then he must pass the check to the waiter and wait for dinner, watching the appearance of the signal set at this table; when a signal appears, it should immediately remove the dish intended for it from the conveyor belt.

To transfer checks to the kitchen, you can use a pneumatic transfer, for which you need to put the appropriate installation.

According to the modification, the design of the central distributor is simplified by the fact that electromagnets 18, 18 ... and latches 22, 22 ... are removed from the supports 77, 17 ... Thus, the supports of the supports 77, 77 ... remain (Fig. 11 , 12, 13) only pins 19, 19 ... and 20, 20 ... The latter are brought to the on position by pivoting levers 50, 50 ... mounted on supports and loaded with springs.

The ends 57, 57 ... of the levers 50, 50 ... in the normal position (corresponding to the open position of the contacts 19 and 20; rest against the ends 52, 52 ... of the dogs 52-54, 52-54 ..., mounted on the upper the ends of the supports 77, 77-can be rotated around the axes 53, 53., and loaded with springs holding them in the normal position.

With the ends 54, 54 ... dogs 52-54 ... the fingers 55, 55.,., Which are mounted on the sliders 56, 56 ... (Fig. 9 and 10), which can be reset along the slots 57, can interact. 57 ... located along the generators of the barzban and formed by the guide bars. With this interaction, gg; ltsa 55 ssbachks; 52-54, the lever 50 is released and, by turning, closes the control circuit in contacts 19 and 20.

The return of the contacts 19, 20 to the initial position is carried out by the action of the finger 55 on the end 5 / lever 50. At the same time, the lever 50 rotates the contact 20 and the pawl 52 - 54, which by the action of its spring jumps over the end 51 of the lever 50 and locks it.

The link of the conveyor belt 4, on which the plates are mounted, can be equipped with switches that work not on opening (as in Fig. 7), but on closing; A link of this design is shown in FIG. 14 and 15, in which the detail designations are consistent with those in FIG. 7. As arises from the drawing, in the second link design, the sliding contacts 41, 42 are located on opposite sides of the support bar, and contacts 36, 38 are not coaxial with the button 34, but to the side of it and work for short circuit, not for opening.

The electrical connection diagram is drawn up as applied to the structures of the distributor of FIG. 9 -13 and the link of FIG. 14 -15, depicted in FIG. sixteen.

Contacts 19, 19 ... of the distributor are connected via a switch 58 to the control circuit wire 60, and contacts 20, 20 ... through signal lamps 63, 63 ... to the contact buses 43, 43 ... Contact buses 44, 44. .. connected to the second control wire d /. The control circuit includes a switch-off winding 62 of an electromagnetic contactor 64 controlling the motor circuit. In parallel with motor 7, windings 59 of brakes are normally connected.

The device of FIG. 16 operates in a manner similar to that of FIG. 5. When installing a dish on the support 33 (Fig. 14), contacts 36 and 38 are closed. Slider 56 is moved along slot 57 and set on a scale applied to the bar above the distributor to the place corresponding to the number of the table to which it is to be served. dish. Turning on the switch 49, start up the engine / and the conveyor belt 4. When the dish comes to the designated table, at the same time

contacts 19, 20 in the distributor are closed, and tires 43 to 44 electrically connected at this table. The winding circuit 62 will be closed, and the contactor 64 will open the motor circuit. The engine and conveyors will be braked. At the same time, lamp 63 at this table comes on, signaling the arrival of the dish. Removing dishes from the tape 4 will cause the opening of the circuit of the winding 62 and automatic start of the engine. For a non-automatic engine stop / the breaker 49 can be used.

Switches 34-38 installed on chain links can be replaced with pushbutton switches mounted on each of the tables and connected in series with signal lamps. This greatly simplifies the design of the belt - / conveyor. At the same time, only the use of such a device is somewhat difficult, since the diner, nap at lunch, must press the button and hold it in that position until the signal disappears, what will happen, though very

quickly.;

The circuit of FIG. 5 is drawn up as applied to a plant supplied with direct current, and the circuit of FIG. 16 for an installation powered by variables, in this particular case, a three-phase tone.

The subject matter of the invention.

Claims (4)

1. A device for serving public canteens, using an electrically driven belt conveyor for moving dishes and a central distributor for stopping and starting the conveyor, characterized in that the distributor, made in the form of a drum switch, consists of a series of pivoting levers 3 / mounted on a cylinder 28, driven by a conveyor in rotation around a fixed axis, and a number of supports / 7, located on this axis in a helical spiral in an amount equal to the number of tables and bearing contacts / P and 20, included in the motor circuit, and electromagnets / 5 for their closure, connected in series to the mains with contacts located at the tables, closed by contact bridges 39, 40 and switches 34 on the conveyor, actuated by the weight of the dish installed on the conveyor, in order to achieve automatic engine shutdown and stop the conveyor at the moment of opening by one of the levers 5 / corresponding to the aforementioned contacts 19, 20 and the automatic start of the engine and conveyor when removing the dish from the conveyor. 2. The form of the device according to claim 1, characterized in that the levers 31 are mounted in rows both along the cylinder lines and the circumference in order to select any table by installing corresponding lever to the unlock position. 3.Video modification of the device according to claims 1 and 2, characterized in that the supports 77 carry only pins 19, 20, and instead of a row of switching electromagnets 18, one common electromagnetic contactor 62, 64 is used, normally closing the motor circuit and energized, for the purpose of opening it, when closed cylinder lever corresponding to the pins. 4. The form of the device according to paragraph.n. 1 to 3, characterized in that the cylinder 28 is provided with forming slots 57 along the forming, and the levers 31 are designed in the form of fingers 55 mounted on sliders 56, which are reinstalled along the slots. to the author's testimony of P. S. JNi 39360 Kryzhanovsky il: i; And i dl KI. Tfh T-RSh N. i to the author's certificate of P. S. No. В9360 of Kryzhanovsky p L-th-n i J t i Y:  i- tc-r 4 g. ..yyyy -  yes l 1 J to the author's certificate of PS No. 39360 Kryshanovsky