METHOD AND DEVICE FOR ADJUSTING A TRANSPORT VEHICLE FOR A CONTAINER-HANDLING SYSTEM

Abstract

Method for adjusting a transport vehicle for a container handling system, where the transport vehicle comprises two oppositely disposed secondary parts which can be driven electromagnetically as an armature by way of a linear motor system of the container handling system, wherein in a device for adjusting, a first magnetic force of the first secondary part is determined with a sensor, in that a second magnetic force of the second secondary part is determined with the sensor; and in that the first magnetic force and the second magnetic force are compared with one another and/or with at least one reference force, and the two secondary parts are adjusted based thereon at the transport vehicle in such a way that the first magnetic force and the second magnetic force are of the same magnitude.

Claims

1. Method for adjusting a transport vehicle for a container handling system, where said transport vehicle comprises two oppositely disposed secondary parts which are electromagnetically drivable as an armature by way of a linear motor system of said container handling system, wherein, in a device for adjusting, a first magnetic force of a first secondary part of said two oppositely disposed secondary parts is determined with a sensor, a second magnetic force of a second secondary part of said two oppositely disposed secondary parts is determined with said sensor, and the first magnetic force and the second magnetic force are compared with one another and/or with at least one reference force and said two oppositely disposed secondary parts are adjusted based thereon at said transport vehicle in such a way that the first magnetic force and the second magnetic force are of a same magnitude.

2. The method according to claim 1, where said transport vehicle is turned around after the first magnetic force has been determined and the second magnetic force is then determined.

3. The method according to claim 1, where said transport vehicle is placed in a stationary manner against a measuring table of said device for adjusting when the first and the second magnetic force is determined.

4. The method according to claim 3, where said transport vehicle is placed against said measuring table in such a way that said first secondary part faces said sensor when the first magnetic force is determined, and said transport vehicle is then turned around and placed against said measuring table in such a way that said second secondary part faces said sensor.

5. The method according to claim 3, where said transport vehicle is placed against said measuring table in such a way that said first secondary part is oriented towards a contact surface of said measuring table for said transport vehicle when the first magnetic force is determined, and said transport vehicle is then turned around and placed against said measuring table in such a way that said second secondary part is oriented towards said contact surface of said measuring table for said transport vehicle.

6. The method according to claim 1, where a respective magnetic field of said first and said second secondary part acts upon said sensor over a distance when the first and the second magnetic forces are determined.

7. The method according to claim 1, where a position of said first and/or said second secondary part on said transport vehicle is changed by removing or adding at least one spacer element when said transport vehicle is adjusted.

8. A device for adjusting a transport vehicle for a container handling system, where said transport vehicle comprises at least one secondary part, which is movable electromagnetically as an armature by way of a linear motor system of said container handling system, wherein said device comprises a sensor and a measuring table for the stationary placement of said transport vehicle relative to said sensor, and said sensor is configured to determine magnetic forces in order to determine a magnetic force of a first secondary part of said at least one secondary part.

9. The device according to claim 8, where said measuring table for the stationary placement of said transport vehicle comprises at least one contact surface which interacts with rollers and/or contact elements of said transport vehicle when the magnetic forces are determined.

10. The device according to claim 8, where said sensor comprises a magnetic element for interaction with said at least one secondary parts and a force sensor.

11. The device according to claim 10, where said magnetic element is firmly connected to a force introduction side of said force sensor.

12. The device according to claim 9, where a force sensor is arranged separately from a magnetic element of said sensor and a force introduction point of said force sensor is firmly connected to said at least one contact surface.

13. The device according to claim 8, where said sensor comprises a Hall element for determining the magnetic forces by way of the Hall effect.

14. The device according to claim 8, wherein said at least one secondary part comprises two oppositely disposed secondary parts.

15. The device according to claim 14, wherein said sensor is configured to determine the magnetic forces in order to determine a magnetic force of a second secondary part of said two oppositely disposed secondary parts.

Description

[0028] Further features and advantages of the invention shall be explained in more detail below with reference to the embodiments illustrated in the figures, where

[0029] FIGS. 1A 1B show a first embodiment of a device according to the invention for adjusting a transport vehicle in two perspective views obliquely from above;

[0030] FIGS. 2A 2B show a second embodiment of a device according to the invention for adjusting a transport vehicle in a perspective view obliquely from above and as a sectional view; and;

[0031] FIG. 3 shows an embodiment of a method according to the invention for adjusting a transport vehicle as a flow chart.

[0032] FIGS. 1A 1B show a first embodiment of a device 1 according to the invention for adjusting a transport vehicle 40 in two perspective views obliquely from above.

[0033] It can be seen that device 1 comprises a support frame 30 with several carrier elements 31-33 on which sensor 10 and measuring table 20 are arranged. Support frame 30 is there formed by feet 31, plate 32 and sensor receptacle 33. Feet 31 can be placed on the floor or a work bench so that plate 32 extends substantially horizontally and measurement table 20 substantially vertically. In this example, the measuring table can be connected by two screws to plate 32 in such a way that the two form a right angle. With device 1 according to the first embodiment in FIGS. 1A-1B, transport vehicle 40 can consequently be placed on measuring table 20 from the side.

[0034] Transport vehicle 40 comprising a carrier 43, two secondary parts 41, 42 and rollers R can additionally be seen.

[0035] After the adjustment, rollers R of transport vehicle 40 are guided by way of guide elements, for example rails, along one or more transport lanes during the operation of the container handling system, presently not shown. In addition, secondary parts 41, 42 act as magnets and are driven electromagnetically in the container handling system by way of a linear motor system, presently likewise not shown.

[0036] It can also be seen that measuring table 20 comprises contact surfaces 21a-21d for rollers R of transport vehicle 40. As a result, transport vehicle 40 can be placed in a stationary manner against measuring table 20. Contact surfaces 21a-21d can be arranged at least in part at a right angle to one another in order to ensure precise positioning of transport vehicle 40 in the different spatial directions.

[0037] It can also be seen that measuring table 20 is formed in a frame-like manner with an internal opening through which sensor 10, in particular magnetic element 11, protrudes.

[0038] Sensor 10 comprises magnetic element 11 and force sensor 12 which is presently formed, for example, as an S-shaped element with a strain gauge. In addition, magnetic element 11 is firmly connected to force introduction side S.sub.1 of force sensor 12. In contrast, mounting side S.sub.2 of force sensor 12 is firmly connected to sensor receptacle 33. A magnetic force acting upon magnetic element 11 can consequently be measured by way of force sensor 12 as a force between magnetic element 11 and sensor receptacle 33.

[0039] When determining the magnetic force, transport vehicle 40 is placed against measuring table 20 by way of rollers R such that first secondary part 41 faces sensor 10. A measurement of the first magnetic force acting upon magnetic element 11 is then taken using sensor 10. Transport vehicle 40 is then turned around and placed against measuring table 20 in such a way that second secondary part 42 faces sensor 10. A measurement of the second magnetic force acting upon magnetic element 11 is subsequently taken. The first magnetic force and the second magnetic force are then compared with one another and/or with at least one reference force. If the first or the second magnetic force deviates too much from the at least one reference force and/or from each other, then they are adjusted in such a way that the first magnetic force and the second magnetic force are of the same magnitude.

[0040] The magnetic forces of first and second secondary parts 41, 42, respectively, can be adjusted by removing or adding at least one spacer element between respective secondary parts 41, 42 and carrier 43. This can change the distance between first and second secondary parts 41, 42 and sensor 10, as a result of which the magnetic forces can be adjusted accordingly.

[0041] FIGS. 2A-2B show a second embodiment of a device 1 according to the invention for adjusting transport vehicle 40 in a perspective view obliquely from above and as a sectional view.

[0042] Device 1 in FIGS. 2A-2B differs from the embodiment in FIGS. 1A-1B only by support frame 30 and the horizontal arrangement of measuring table 20.

[0043] It can be seen that support frame 30 comprises two substantially vertically extending plates 32, where feet 31 arranged at their lower ends and measuring table 20 is arranged at their upper ends. As a result, measuring table 20 extends substantially horizontally, similar to a table top, between the two plates 32. The configuration of measuring table 20 for the remainder corresponds to the configuration previously described with reference to FIGS. 1A-1B.

[0044] In addition, it can be seen that sensor receptacle 33 is firmly connected to one of the two plates 32 and protrudes therefrom at a right angle, for example, as seen in FIG. 2B, with plate 32 at the left. However, it is also conceivable that sensor receptacle 33 is connected to plate 32 at the right-hand side or to both plates 32.

[0045] Consequently, mounting side S.sub.2 of force sensor 12 is firmly connected to sensor receptacle 33 and force introduction side S.sub.1 to magnetic element 11. Magnetic element 11 in turn protrudes upwardly through the opening of measuring table 20 in order to ensure the smallest possible spacing from one of the two secondary parts 41, 42.

[0046] With device 1 according to the second embodiment in FIGS. 2A-2B, transport vehicle 40 can consequently be placed on measuring table 20 from above.

[0047] For the remainder, the first and second magnetic forces of first and second secondary parts 41, 42 are determined in accordance with the procedure previously described with reference to the first embodiment.

[0048] With devices 1 according to the first and the second embodiments, the magnetic forces of first and second secondary parts 40, 42 can therefore be easily determined and adjusted so that they are substantially of the same magnitude. It is thus ensured during the operation of the container handling system that transport vehicle 40 is steered towards the desired branch-off when passing through a switch.

[0049] As an alternative to the second embodiment in FIGS. 2A-2B, it is also conceivable that magnetic element 11 is firmly connected to sensor receptacle 33 (for example by way of a connecting element) and one or more force sensors are arranged between measuring table 20 and plates 32. As a result, the magnetic forces can be determined indirectly from the forces acting from rollers R upon measuring table 20.

[0050] FIG. 3 shows an embodiment of a method 100 according to the invention for adjusting a transport vehicle as a flow chart. Method 100 can be carried out with device 1 according to one of the two embodiments in FIG. 1A-1B or 2A-2, respectively, for adjusting transport vehicle 40.

[0051] In step 101, the transport vehicle is first placed in a stationary manner against the measuring table, so that the first secondary part faces the sensor.

[0052] The first magnetic force of the first secondary part is then determined in step 102. The magnetic field acts, for example, upon a magnetic element which in turn exerts a corresponding force on a force sensor. For example, the force sensor forwards the force measured in this manner as a signal to a display or a computer system, so that it can be recorded as the first magnetic force of the first secondary part.

[0053] In step 103, the transport vehicle is then turned around and in step 104 placed against the measuring table in such a way that the second secondary part faces the sensor.

[0054] In step 105, the second magnetic force of the second secondary part is subsequently determined in the same way as in step 1 or 2 and recorded as the second magnetic force of the second secondary part.

[0055] The first magnetic force and the second magnetic force are now compared with one another and/or with at least one reference force. This makes it possible to determine whether the first magnetic force and the second magnetic force are within a desired specification or are of the same magnitude, respectively.

[0056] If this is not the case (decision 108), then the two secondary parts on the transport vehicle are adjusted in step 107, and steps 101-106 are carried out again until the first magnetic force and the second magnetic force are within the desired specification. The two secondary parts are adjusted, for example, by changing their position on the transport vehicle by removing or adding at least one spacer element.

[0057] A particularly simple adjustment of the two magnetic forces of the first and second secondary parts on the transport vehicle is therefore possible using method 100, so that the transport vehicle can be reliably driven also through switches during operation of the container handling system.

[0058] It is understood that the features mentioned above in the embodiments described are not restricted to these feature combinations but are also possible individually or in any other feature combination.