KR101027936B1 - A Magnetically-Guided Lift with Slim Guide-rails - Google Patents

Abstract

The present invention relates to a self-guided lift having a slimmer rail, more specifically, a height and width of the structure compared to a rail applied to a self-guided lift of a conventional non-contact bearing, and at the same time the conventional contact bearing method By adopting a slim rail structure that maintains the height and width level of the lift, and adopting an electromagnet with a reduced height and width to fit the slim rail, the number of arrays of the electromagnets is increased, thereby increasing the support rigidity of the lift. A self-guided lift with a slimmer rail to be improved.

To this end, the present invention is directed to a self-guided lift comprising a first and second rails, a stacking box disposed to be able to move up and down along the first and second rails, and a lift frame surrounding the first and second rails. Adopting the first and second rails in a slim structure with minimum height and width, two or four in the X-axis direction, two in the Y-axis, four or six in each corner position of the lift frame Provided is a self-guided lift with a slim rail characterized in that the electromagnet is integrally mounted.

Slimmed rail, self-guided lift, electromagnet, contact, contactless, bearing, support rigidity

Description

A magnetically-guided lift with slim guide-rails

The present invention relates to a self-guided lift having a slimmer rail, more specifically, a height and width of the structure compared to a rail applied to a self-guided lift of a conventional non-contact bearing, and at the same time the conventional contact bearing method By adopting a slim rail structure that maintains the height and width level of the lift, and adopting an electromagnet with a reduced height and width to fit the slim rail, the number of arrays of the electromagnets is increased, thereby increasing the support rigidity of the lift. A self-guided lift with a slimmer rail to be improved.

Lifts are used as a means of loading and transporting products or people in various industrial sites. Currently, lifts are mainly used as a contact bearing type lift and a non-contact bearing type self-guided lift.

Conventional contact bearing type lifts have the advantage that the support stiffness is small while the height and width of the rails, which are the transfer paths of the lifts, are large. There is a disadvantage in that dust is generated, and there is a problem in that it is difficult to apply to a place (for example, a clean room with an LCD process) where fine foreign substances such as dust should not penetrate.

In order to solve this problem, in recent years, a self-guided lift of a non-contact bearing type has been in the spotlight, but a self-guided lift of a non-contact bearing type is required to maintain a high support rigidity of a bearing like a conventional contact bearing type lift. The disadvantage is that the height and width of the rail must be increased.

The self-guided lift of the conventional non-contact bearing method will be described in more detail as follows.

1 is a cross-sectional view seen from the X-axis direction as an application example of a conventional non-contact bearing self-guided lift, and FIG. 2 is a cross-sectional view seen from the Y-axis direction of FIG. 1 showing a layout view of the electromagnet.

As shown in FIG. 1, the self-guided lift of a conventional non-contact bearing is provided by a rope 80 and a driving means (not shown) by means of a loading box 60 and an integrated lift frame 70 which surrounds it. It is arranged to move up and down along the first and second rails (51, 52), and each of the corner positions of the lift frame 70, two in the X-axis direction, one in the Y-axis direction, a total of three electromagnets The first and second rails 51 and 52 are integrally mounted with a predetermined distance therebetween.

More specifically, the first and second electromagnets 11 and 12 are integrally mounted on the upper left side of the lift frame 70 while being spaced apart from the front and inner surfaces of the first rail 51, respectively. As can be seen in FIG. 2, the first electromagnet 23 is mounted on the opposite side of the first electromagnet 11, that is, on the rear side of the first rail 51.

In addition, third and fourth electromagnets 14 and 15 are mounted on the upper right side of the lift frame 70 while being spaced apart from the front and inner surfaces of the second rail 52, respectively, and the first rail 51. The fifth and sixth electromagnets 17 and 18 are mounted on the lower left side of the lift frame 70 while being spaced apart from the front and inner surfaces of the lift frame 70, respectively, and spaced apart from the front and inner surfaces of the second rail 52. The seventh and eighth electromagnets 20 and 21 are mounted on the lower right side.

Of course, the back of the second rail 52 corresponding to the third electromagnet 14, the back of the first rail 51 corresponding to the fifth electromagnet 17, and the seventh electromagnet 20 Although not shown in the rear surface of the corresponding second rail 52, the third 'electromagnet, the fifth' electromagnet, and the seventh 'electromagnet are spaced apart from each other.

In addition, the gap sensor (Gap Sensor) is adjacent to each other as a means for spaced apart from each rail 51, 52 to the electromagnets integrally mounted to the lift frame 70 to form the arrangement as described above, Figure 1 As shown in FIG. 1, a first gap sensor 41 is disposed at an upper end of the first electromagnet 11, a second gap sensor 42 is disposed at an upper end of the second electromagnet 12, and the third electromagnet 14 is disposed on the upper end of the second electromagnet 12. The third gap sensor 43 at the upper end of the fourth gap sensor 44 of the fourth electromagnet 15, the fifth gap sensor 45 at the lower end of the fifth electromagnet 17, The sixth gap sensor 46 at the lower end of the sixth electromagnet 18, the seventh gap sensor 47 at the lower end of the seventh electromagnet 20, and the eighth gap sensor at the lower end of the eighth electromagnet 21. 48 are mounted respectively.

In addition, as a means for supplying power and controlling the operation of the electromagnets having the above arrangement, a first guide controller 31 is provided in the first and second electromagnets 11 and 12, and the third and third A second guide controller 32 is provided in the four electromagnets 14 and 15, and a third guide controller 33 is provided in the fifth and sixth electromagnets 17 and 18, and the seventh and eighth electromagnets 20 and 21. ), The fourth guide controller 34 is connected to each other so as to transmit electrical signals.

Meanwhile, the electromagnets are composed of an electromagnet core in which magnetic flux is concentrated and an electromagnet coil supplied with current from each of the guide controllers. For example, as shown in FIG. 2, the first electromagnet 11 includes a first electromagnet. The electromagnet core 11a and the first electromagnet coil 11b, the second electromagnet 12 is the second electromagnet core 12a and the second electromagnet coil 12b, and the first 'electromagnet 23 is made of 1 'electromagnet core 23a and the 1' electromagnet coil 23b, respectively.

However, such a conventional non-contact bearing self-guided lift has the following problems.

In order to increase the rigidity supporting the lift as the weight of the load increases, the current for the electromagnets is increased or the number of turns of the electromagnet coil is increased, or the pole cross-sectional area of the electromagnet is increased. In this case, when the current and the number of turns of the electromagnet are equal, the pole cross-sectional area must be increased to increase the support rigidity for the lift.

When increasing the pole cross-sectional area to increase the lift support stiffness without increasing the current and the number of windings of the electromagnets, the cross-sectional areas of the first and second rails in the X and Y directions corresponding to increasing the pole cross-sectional area, that is, the This results in a problem that both the height and width of the first and second rails need to be increased, which greatly increases the unit cost of the rail and causes a weighted problem in that the lift cannot be properly installed in the lift installation space prepared in advance by the restricted space. do.

On the contrary, if the height and width of the first and second rails are maintained as they are, the width and height of each electromagnet are increased due to the increase in the number of turns to increase the lift support stiffness. This leads to the problem of increasing the height and width of the rail.

Therefore, there is a need for a method of increasing the lift support rigidity while making the height and width of the electromagnet and rail as small as possible.

The present invention has been made in view of the above point, the height and width of the structure compared to the rail applied to the self-guided lift of the conventional non-contact bearing and at the same time the height and width of the conventional contact bearing type lift A slimmer rail system that maintains the level, and an electromagnet with a reduced height and width to fit the slimmer rail, while increasing the number of arrays of electromagnets, improving the support rigidity of the lift. It is an object to provide a self-guided lift with a fixed rail.

One embodiment of the present invention for achieving the above object comprises: a first and second rails, a loading box disposed to be able to move up and down along the first and second rails, and including a lift frame integrated therein; In the self-guided lift, the first and second rails have a slimmer structure with a minimum height and width, and two in the X-axis direction and two in the Y-axis direction for each corner position of the lift frame. It provides a self-guided lift with a slim rail, characterized in that a total of four electromagnets integrally mounted.

Preferably, the total of four electromagnets are characterized in that the optimal size is made to fit the height and width of the first and second slim rails.

More preferably, the two electromagnets mounted in the X-axis direction at each corner position of the lift frame are spaced apart from the front and rear surfaces of the slimmed first or second rail, respectively, and at each corner position of the lift frame. The two electromagnets mounted in the Y-axis direction may be spaced apart from the inner surface of the slimmed first or second rail.

Another embodiment of the present invention for achieving the above object comprises: a first and a second rail, a loading box disposed to be able to move up and down along the first and second rail and a lift frame surrounding the unit; In the self-guided lift, the first and second rails have a slimmer structure with a minimum height and width, and each corner position of the lift frame has four in the X axis direction and two in the Y axis direction. Provided is a self-guided lift with a slim rail characterized in that a total of six electromagnets are integrally mounted.

Preferably, the total six electromagnets are manufactured to an optimal size suitable for the height and width of the slimmed first and second rails.

More preferably, the four mounted electromagnets mounted in the X-axis direction at each corner position of the lift frame are spaced apart from each other by two at the front and the rear of the slimmed first or second rail, respectively. Two electromagnets mounted in the Y-axis direction at each corner position may be spaced apart from the inner side of the slimmed first or second rail.

Through the above problem solving means, the present invention provides the following effects.

According to the present invention, a slim rail structure that maintains a height and width level of a conventional contact bearing type lift is reduced in height and width compared to a rail applied to a self-guided lift of a conventional non-contact bearing. Conventional contact bearings by increasing the number of electromagnets to 4 or 6 per corner of the lift, while also applying an electromagnet of optimized size with reduced height and width to fit a slim rail structure. It is almost the same as the rail size of the lift type, providing compatibility with self-guided lifts, easy installation of rails and electromagnets in a limited footprint, and improved lift stiffness. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, the self-guided lift of the conventional non-contact bearing has a larger cross-sectional area of the electromagnet and rail, that is, the height and width of the electromagnet and the rail, which are adopted to obtain a higher support rigidity for the lift, compared to the conventional contact bearing type lift. There was a problem, and this is to solve the various disadvantages, such as expensive rail, difficulty in installing the increased size of the rail in the confined installation space.

Accordingly, the present invention adopts a slim rail structure that reduces the height and width of the rail, and adopts a structure in which the size of the electromagnet is also reduced to fit the slim rail, thereby supporting the support rigidity of the lift by the conventional contact bearing method. The main focus is on increasing it to an equivalent level.

 That is, the present invention applies a slim rail structure having the height and width of the rail adopted in the conventional contact lift, and also the electromagnet adopted in the self-guided lift of the conventional non-contact bearing for high support rigidity for the lift. And by applying an electromagnet and rail structure is reduced in height and width compared to the rail, and at the same time to propose a way to increase the number of electromagnets, it is to improve the support rigidity of the lift.

To this end, an embodiment of the self-guided lift of the present invention is as shown in Figures 3 and 4 attached.

FIG. 3 is a schematic cross-sectional view showing an embodiment of a self-guided lift with a slimmed rail according to the present invention, and FIG. 4 is a main cross-sectional view showing a layout view of the electromagnet shown in FIG. 3. It shows that the rail structure can be applied with reduced width compared to the

As shown in FIG. 3, the self-guided lift according to an embodiment of the present invention is a lift of a non-magnetic material that is integrally enclosed by the loading box 60 and a rope 80 and a driving means (not shown). Frame 70 is disposed to be able to move up and down along the first and second rails (51, 52), two in the X-axis direction, two in the Y-axis direction for each corner position of the lift frame (70), A total of four electromagnets are integrally mounted at predetermined intervals from the first and second rails 51 and 52.

In particular, the first and second rails 51 and 52 are adopted in a slim rail structure corresponding to the height and width of the rail employed in the conventional contact bearing type lift.

Referring to the arrangement of the four electromagnets, as shown in FIG. 3, the first and second electromagnets are disposed on the upper left side of the lift frame 70 while being spaced apart from the front and inner surfaces of the first rail 51, respectively. 11 and 12 are integrally mounted, and at the same time, the first 'electromagnet 23 is mounted on the opposite side of the first electromagnet 11, that is, the rear side of the first rail 51, as can be seen in FIG. .

In addition, a second 'electromagnet 13 is attached directly below the second electromagnet 12 attached to the inner surface of the lift frame 70.

Therefore, the first electromagnet 11 and the first 'electromagnet 23 are arranged in the X-axis direction with the first rail 51 having a T-shaped cross section at the upper left of the lift frame 70 among the four electromagnets. It is mounted to support the force in the X-axis direction for the lift, the second electromagnet 12 and the second 'electromagnet 13 is mounted up and down along the Z-axis direction in the Y-axis direction Y-axis for the lift Support the force of the direction.

In addition, the third electromagnet 14 and the third 'electromagnet (not shown) of the four electromagnets in the upper right side of the lift frame 70 with the second rail 52 of the T-shaped cross section between the X-axis Direction, and the fourth electromagnet 15 and the fourth 'electromagnet 16 are mounted up and down along the Z-axis direction in the Y-axis direction.

In addition, the fifth electromagnet 17 and the fifth 'electromagnet (not shown) of the four electromagnets have a X-axis between the first rails 51 having a T-shaped cross section. Direction, and the sixth electromagnet 18 and the sixth electromagnet 19 are mounted up and down along the Z-axis direction in the Y-axis direction.

In addition, the seventh electromagnet 20 and the seventh'electromagnet (not shown) of the four electromagnets have the X-axis between the second rails 52 having a T-shaped cross section. Direction, and the eighth electromagnet 21 and the eighth 'electromagnet 22 are mounted up and down along the Z-axis direction in the Y-axis direction.

Preferably, the first to eighth gap sensors 41 to 48 are spaced apart from each other on the electromagnets integrally mounted to the lift frame in the arrangement as described above. .

More preferably, as a means for supplying power to the electromagnets having the arrangement as described above and controlling the operation thereof, the first to fourth guide controllers 31 to 34 are connected to the electromagnets so as to transmit electrical signals, respectively. do.

In addition, the electromagnets are U type or E type, and are composed of an electromagnet core in which magnetic flux is dense and an electromagnet coil supplied with current from each guide controller. For example, as shown in FIG. Numeral 11 is a first electromagnet core 11a and a first electromagnet coil 11b, and the second electromagnet 12 is a second electromagnet core 12a and a second electromagnet coil 12b. The electromagnet 23 is a first 'electromagnet core 23a and a first' electromagnet coil 23b, and the second 'electromagnet 13 is a second' electromagnet core 13a and a second 'electromagnet coil 13b. Each consists of

As such, the electromagnets according to the exemplary embodiment are reduced in size to fit the slimmer rail and are adopted as the structure having the optimized height and width as the first and second rails 51 and 52 are adopted as the slimmer structure. do.

According to one embodiment of the present invention, the slim rail structure having the height and width of the rail adopted in the conventional contact lift, and also optimized to reduce the height and width to fit the slim rail structure By increasing the number of electromagnets at the same time, it is almost the same as the rail size of conventional contact bearing type lifts, providing compatibility with self-guided lifts and providing rail and electromagnets within a limited installation area. It can be easily installed, and can improve the support rigidity of the lift.

Here, the self-guided lift having a slim rail according to another embodiment of the present invention will be described.

5 is a schematic cross-sectional view showing another embodiment of a self-guided lift with a slimmer rail according to the present invention, showing a rail structure with reduced height compared to the conventional rail shown in FIG.

As shown in FIG. 5, the self-guided lift according to another embodiment of the present invention is a lift of a non-magnetic material that is integrally enclosed with the loading box 60 by a rope 80 and a driving means (not shown). In a state in which the frame 70 is movable up and down along the first and second rails 51 and 52, four corners of the lift frame 70 are positioned in the X-axis direction and two in the Y-axis direction. A total of six electromagnets are integrally mounted at predetermined intervals from the first and second rails 51 and 52.

Similarly, the first and second rails 51 and 52 according to another embodiment are also adopted in a slim rail structure corresponding to the height and width of the rail employed in the conventional contact bearing type lift.

Looking at a total of six electromagnet arrangements mounted on the upper left of the lift frame 70, the first electromagnet 11 and the first 'electromagnet (not shown), and the first "electromagnet 24 and the first" 'The electromagnet (not shown) is mounted in the X-axis direction with the first rail 51 of the T-shaped cross section to support the force in the X-axis direction with respect to the lift, and the second electromagnet 12 and the first The 2 'electromagnet 13 is mounted up and down along the Z-axis direction in the Y-axis direction to support the force in the Y-axis direction for the lift.

In addition, when looking at a total of six electromagnet arrangements mounted on the upper right side of the lift frame 70, the third electromagnet 14 and the third 'electromagnet (not shown), and the third " electromagnet 25 " A third "'electromagnet (not shown) is mounted in the X-axis direction with the second rail 52 of the T-shaped cross section interposed therebetween, and the fourth electromagnet 15 and the fourth' electromagnet 16 are Y-axis. Direction is mounted up and down along the Z-axis direction.

In addition, when a total of six electromagnets are mounted on the lower left side of the lift frame 70, the fifth electromagnet 17 and the fifth 'electromagnet (not shown), and the fifth " electromagnet 26 and the A 5 "'electromagnet (not shown) is mounted in the X-axis direction with the first rail 51 of the T-shaped cross section interposed therebetween, and the sixth electromagnet 18 and the 6' electromagnet 19 in the Y-axis direction. Is mounted up and down along the Z-axis direction.

In addition, when a total of six electromagnets are mounted on the lower right side of the lift frame 70, the seventh electromagnet 20 and the seventh 'electromagnet (not shown), and the seventh "electromagnet 27 and the A 7 "'electromagnet (not shown) is mounted in the X-axis direction with the second rail 52 of the T-shaped section interposed therebetween, and the eighth electromagnet 21 and the 8' electromagnet 22 in the Y-axis direction. Is mounted up and down along the Z-axis direction.

As in one embodiment, the first to eighth gap sensors 41 to 48 are spaced apart from each other by the electromagnets integrally mounted to the lift frame in the arrangement as described above. Is mounted.

As in one embodiment, as a means for supplying power and controlling the operation of the electromagnets having the arrangement as described above, the first to fourth guide controllers 31 to 34 are each capable of transmitting electrical signals to the electromagnets. Connected.

In addition, the electromagnets are U type or E type, and are composed of an electromagnet core in which magnetic flux is concentrated and an electromagnet coil supplied with current from each guide controller.

As such, the electromagnets adopted in other embodiments are reduced in size to fit the slimmer rail, and are adopted as a structure having an optimized height and width as the first and second rails 51 and 52 are adopted as slimmer structures. However, unlike one embodiment, six more are adopted.

According to another exemplary embodiment of the present invention, the slim rail structure having the height and width of the rail adopted in the conventional contact lift is applied, and the optimization of reducing the height and width to fit the slim rail structure. By increasing the number of electromagnets up to six per corner of the lift, the same size as the rails of conventional contact bearing lifts can be provided, providing compatibility with self-guided lifts. In addition, the rails and electromagnets can be easily installed within the limited installation area, and the supporting rigidity of the lift can be further improved.

1 is a schematic cross-sectional view illustrating a configuration of a conventional self-guided lift,

FIG. 2 is a cross-sectional view of main parts showing a layout view of an electromagnet shown in FIG. 1;

3 is a schematic cross-sectional view showing one embodiment of a self-guided lift with a slimmed rail according to the present invention;

4 is a sectional view showing the principal parts of the arrangement of the electromagnet shown in FIG. 3;

5 is a schematic cross-sectional view showing another embodiment of a self-guided lift with a slimmed rail in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

11: first electromagnet 12: second electromagnet

13: 2 'electromagnet 14: third electromagnet

15: fourth electromagnet 16: fourth 'electromagnet

17: 5th electromagnet 18: 6th electromagnet

19: 6th electromagnet 20: 7th electromagnet

21: 8th Electromagnet 22: 8th 'Electromagnet

23: first 'electromagnet 24: first "electromagnet

25: third "electromagnet 26: fifth" electromagnet

27: 7 "electromagnet 41-48: 1st-8th gap sensor

31 to 34: first to fourth guide controller 51: first rail

52: second rail 60: loading box

70: lift frame 80: rope

11a: first electromagnet core 11b: first electromagnet coil

12a: second electromagnet core 12b: second electromagnet coil

13a: 2 'electromagnet core 13b: 2' electromagnet coil

23a: first 'electromagnet core 23b: first' electromagnet coil

Claims (6)

delete First and second rails; A self-guided lift comprising a loading box disposed to be able to move up and down along the first and second rails and a lift frame surrounding and integrated therein, Adopting the first and second rails in a slimmer structure with a minimum height and width, In each corner position of the lift frame, two electromagnets in total are mounted integrally with two in the X-axis direction and two in the Y-axis direction, and the four electromagnets have the height and height of the slimmed first and second rails. Self-guided lift with a slim rail, characterized by an optimal size for the width. The method according to claim 2, Two electromagnets mounted in the X-axis direction at each corner position of the lift frame are spaced apart from the front and rear surfaces of the slimmed first or second rail, respectively, and mounted in the Y-axis direction at each corner position of the lift frame. And the two electromagnets are arranged on the inner side of the slimmed first or second rail spaced apart. First and second rails; A self-guided lift comprising a loading box disposed to be able to move up and down along the first and second rails and a lift frame surrounding and integrated therein, Adopting the first and second rails in a slimmer structure with a minimum height and width, And a total of six electromagnets integrated in the X-axis direction, two in the Y-axis direction, and a total of six electromagnets in each corner position of the lift frame. The method according to claim 4, The total of six electromagnets are self-guided lift with a slim rail, characterized in that the optimal size is made to fit the height and width of the first and second slim rails. The method according to claim 4 or 5, Four mounted electromagnets mounted in the X-axis direction at each corner position of the lift frame are spaced apart from each other at the front and rear surfaces of the slimmed first or second rail, respectively, and at each corner position of the lift frame. And two axially mounted electromagnets spaced apart from the inner side of the slimmed first or second rail.

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