KR101276769B1 - Bogie for transparting - Google Patents

Abstract

PURPOSE: A transportation bogie is provided to minimize an object transportation path and to maximize transportation efficiency by freely setting the transportation direction of a bogie. CONSTITUTION: A transportation bogie(1) comprises a guide rail(10), a bogie(30), and a wire or chain. A pair of protrusions is formed in the both sides of the guide rail. The bogie is movably coupled to the guide rail. One side of the wire or chain is coupled to the bogie, and the other side thereof is wound on a sprocket wheel or a drum driven by a motor. The guide rail comprises a linear section, a first curved section, and a second curved section. The first curved section is curved on a plane in parallel to a main frame(31). The second curved section is curved on a plane across to the main frame.

Description

Bogie for Transportation {BOGIE FOR TRANSPARTING}

The present invention relates to a transport trolley, and more particularly, to a transport trolley having a trolley which is easily moved along the guide rail even when a curved portion is formed in the guide rail.

In various industrial sites, the transfer of goods such as materials and parts is often necessary. Therefore, various conveying devices such as conveyors and trolleys are used to increase work efficiency.

However, since the conveyor is generally installed on the floor of the work site, when considering the arrangement of various equipment of the work site, the space where the conveyor is to be installed must be considered together from the beginning, and since the conveyor occupies a lot of space, the work site is narrow. There are disadvantages such as being uncomfortable or making inconvenience to the movement of workers.

In addition, the above-mentioned conveyor and trolley may cause a lot of noise during operation, and if you want to install so that the direction in which the goods are transported, there is a limit to minimize the radius of curvature, so a lot of space must be devoted, especially in the workplace It may be very difficult or impossible for the article to be transported in the up and down direction with respect to the bottom surface.

In order to solve the above disadvantages, Republic of Korea Patent Publication No. 10-1046435 (hereinafter referred to as "prior art 1") has been proposed a prefabricated conveyor that can be transported goods in the vertical direction.

However, while the prior art 1 allows the article to be conveyed in the up and down direction, it may be impossible to transport the pair of rollers simultaneously using a pair of wires so that the article is transported along a curved track on a horizontal plane.

Republic of Korea Patent Publication No. 10-1046435 (Registration date: June 28, 2011, the name of the invention: prefabricated conveyor)

The present invention is to provide a transport cart that can freely set the transport direction, can increase the transport efficiency of the article, minimize the occurrence of noise, and minimize the occupation of space.

According to an aspect of the present invention, a pair of protrusions protruding in opposite directions on both side edges includes a guide rail formed along the length direction, and a bogie coupled to the guide rail so as to be movable along the length direction, The trolley may include a flat main frame, a pair of frame shafts coupled to one surface of the main frame in parallel with each other, a pair of rotation frames rotatably coupled to ends of the pair of frame shafts, and And two pairs of roller shafts coupled to each pair at both ends of the pair of rotary frames, one pair parallel to the frame shaft, and four rollers rotatably coupled to each of the pair of roller shaft ends. On the outer circumferential surface of the two rollers, the diameter decreases toward the middle portion, so that the groove portions into which the protrusions are inserted are formed, respectively. One of the pair of rollers coupled to one is disposed at one edge of the guide rail and the other is disposed at the other edge, and one of the pair of rollers coupled to the other of the pair of rotating frames is the guide. A trolley may be provided disposed at one edge of the rail and the other at the other edge.

Here, the projecting portion is a pair of inclined surface is formed so that the thickness decreases toward the edge of the guide rail, a roller contact surface is formed at the edge end of the guide rail, the groove portion is reduced in diameter toward the middle portion of the outer peripheral surface of the roller A pair of inclined surfaces are formed, and a rail contact surface having a shape corresponding to the roller contact surface is formed at a portion of the outer circumferential surface of the roller, and the angle formed by the pair of inclined surfaces of the protrusion is a It may be smaller than the angle formed by the inclined surface.

At this time, the cross section of the groove portion and the protrusion may be trapezoidal.

The transport trolley may further include a bearing interposed between the frame shaft and the rotating frame.

A plurality of protrusions may be formed on the rail contact surface, and a plurality of grooves corresponding to the protrusion may be formed on the roller contact surface.

The surface of the roller may be coated with synthetic resin or rubber, or the material of the roller may be synthetic resin or rubber.

Since the embodiment of the present invention can freely set the conveying direction of the cart for conveying the article, it is possible to minimize the article conveying path, thereby maximizing the conveying efficiency.

In addition, since the embodiment of the present invention is not directly installed on the floor of the workplace, the occupancy of the space is low, and thus the space utilization of the workplace can be improved.

In addition, the embodiment of the present invention can increase the feed rate since the number of parts that are operating during operation can be minimized while the generation of noise.

1 is a perspective view of a transport cart according to an embodiment of the present invention
FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
Figure 3 is a front view of the bogie included in the bogie for transport according to an embodiment of the present invention
Figure 4 is a view for explaining the operation when the guide rail of the transport cart according to an embodiment of the present invention is curved in one direction
FIG. 5 is an enlarged view of a portion indicated by V in FIG. 2.
6 to 8 are views for explaining the operation when the guide rail of the transport cart according to an embodiment of the present invention is curved in different directions
9 is a view showing a roller of the transport cart according to another embodiment of the present invention

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

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

1 is a perspective view of a transport cart according to an embodiment of the present invention.

Referring to FIG. 1, the transport trolley 1 according to an embodiment of the present invention includes a guide rail 10 and a trolley 30. Here, the trolley 30 is coupled to the guide rail 10 to be movable along the longitudinal direction of the guide rail 10.

The trolley 30 includes a main frame 31, a pair of rotary frames 33, and four rollers 37, 37a, 38, 38a, and the like, and the specific structure of the guide rail 10 and the trolley 30. This will be described with reference to FIGS. 2 and 3.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a front view of the cart included in the transport cart according to the embodiment of the present invention. 2 and Fig. 3 together. Fig.

The guide rail 10 includes a leg body 11. As shown in FIG. 1, the reshaped body 11 may have a rectangular cross section.

For reference, although not shown, the cross-section of the leg body 11 so as to easily support the force applied to the leg body 11 in the process of operating the transport cart 1 according to an embodiment of the present invention It may be formed in various shapes such as to have a shape such as a rhombus or a rectangle, or to have a shape in which a part is embedded to prevent interference between the components of the trolley 30 and the leg body 11. have.

In the leg body 11, a pair of protrusions 13 and 14 protrude along the longitudinal direction of the leg body 11. The pair of protrusions 13 and 14 are formed at both edges of the leg body 11, respectively, and are arranged in a shape protruding toward opposite directions as shown.

A pair of inclined surfaces 131 and 132 and a roller contact surface 133 are formed on one side of the protruding portion 13 of the pair of protrusions 13 and 14, and a pair of inclined surfaces 141 on the other side of the protrusion 14. 142 and the roller contact surface 143 may be formed. The shape of the pair of protrusions 13 and 14 will be described in detail with reference to FIG. 5 below.

The trolley 30 has a main frame 31, a pair of frame shafts 32 and 32a, a pair of rotating frames 33 and 34, two pairs of roller shafts 35 and 35a, and a pair are not shown. And four rollers 37, 37a, 38, 38a.

The mainframe 31 may have a flat plate shape. A pair of frame axes 32 and 32a may be coupled to or protruded from one surface of the main frame 31. In this case, the direction in which the pair of frame axes 32 and 32a protrude to one surface of the main frame 31 may be parallel to each other. That is, the pair of frame axes 32 and 32a may be disposed such that the center axis CS1 of one of them 32 and the center axis CS2 of the other 32a are parallel to each other.

For reference, 'parallel', 'orthogonal' and 'vertical' in this detailed description do not mean 'parallel', 'orthogonal' and 'vertical' in mathematics or geometry, but refer to errors caused by machining errors. It means 'parallel', 'orthogonal' and 'vertical' in consideration.

A pair of rotating frames 33 and 34 may be rotatably coupled to ends of the pair of frame shafts 32 and 32a, respectively. In this case, the pair of rotating frames 33 and 34 may be rectangular as shown, and the middle portion thereof may be coupled to the ends of the pair of frame axes 32 and 32a.

Accordingly, as indicated by the curved arrow in FIG. 3, the rotation frame 33 on one side may be rotated using the center axis CS1 of the frame axis 32 as the rotation center, and the rotation frame 34 on the other side is a frame. The center axis CS2 of the axis (not shown) may be rotated about the rotation center.

A pair of roller shafts 35 and 35a (not shown) are coupled or protruded to both ends of the pair of rotary frames 33 and 34, respectively. That is, the roller shafts 35 and 35a are disposed at both ends at one end of the rotating frame 33 on one side, and the roller shafts (not shown) are disposed one at a time on the other side of the rotating frame 34.

These two pairs of roller shafts 35 and 35a (one pair not shown) may protrude in a direction parallel to the pair of frame shafts 32 and 32a described above. That is, although not shown in detail, the center axes of the two pairs of roller shafts 35 and 35a (not shown) are parallel to the center axes CS1 and CS2 of the pair of frame axes 32 and 32a. Can be arranged.

Four rollers 37, 37a, 38, 38a are rotatably coupled to the ends of the two pairs of roller shafts 35, 35a (one of which is not shown). That is, as shown, the four rollers 37, 37a, 38, 38a respectively represent the center axes CR1, CR2, CR3, CR4 of the two pairs of roller shafts 35, 35a (one pair not shown). It is coupled so that it can be rotated about the rotation center.

For reference, a bearing BR is interposed between the frame shaft 32 and the rotating frame 33 on one side to allow the rotating frame 33 to rotate smoothly with respect to the frame shaft 32, and the frame shaft on the other side. Bearings may likewise be interposed between 32a and rotating frame 34.

The outer circumferential surfaces of the four rollers 37, 37a, 38, and 38a may be recessed to form grooves, which will be described with reference to FIG. 5.

FIG. 5 is an enlarged view of the portion labeled V in FIG. 2. It demonstrates with reference to FIG. 2 and FIG.

The groove 39 formed on the outer circumferential surface of the roller 37 is composed of a pair of inclined surfaces 391 and 392 and a rail contact surface 393. The groove 39 has a diameter toward the center of the roller 37 in the axial direction. It is formed to be reduced.

That is, the pair of inclined surfaces 391 and 392 are formed to have a shape inclined toward the center of rotation of the roller 37 from the edge of the outer peripheral surface of the roller 37 toward the middle portion, and the pair of inclined surfaces 391 and 392. Between the roller 37 outer peripheral surface, the rail contact surface 393 which is the part with the smallest diameter is formed.

Accordingly, the cross-sectional shape of the groove 39 may have a trapezoid as shown, and may have a V-groove shape when the width of the rail contact surface 393 is very small.

In addition, grooves are also formed in the rollers 37a, 38, and 38a, which are not described, respectively, and the grooves have the same shape as the above-described grooves 39, respectively, and are formed in the remaining rollers 37a, 38, and 38a. The description of the grooves will be replaced with the description of the groove 39 above.

Meanwhile, as mentioned above, the pair of inclined surfaces 131 and 132 and the roller contact surface 133 are formed on the protrusion 13 formed in the leg body 11. As shown in the figure, the pair of inclined surfaces 131 and 132 are formed such that the thickness of the protrusion 13 decreases toward the edge of the reinforcement body 11, and the roller contact surface 133 is formed between the pair of inclined surfaces 131 and 132. ) Is formed. The roller contact surface 133 is formed to have a shape corresponding to the rail contact surface 393.

Therefore, the cross-sectional shape of the protrusion 13 may have a trapezoid having a pair of inclined surfaces 131 and 132 and the roller contact surface 133 as an outline, and when the width of the roller contact surface 133 is narrow, it may have a V groove shape. It may be.

A pair of inclined surfaces 141 and 142 and a roller contact surface 143 are also formed in the protrusions 14 formed on the other side of the re-regulated body 11, which are the pair of inclined surfaces 131 and 132 of the protrusion 13 described above. And the roller contact surface 133. Therefore, the description of the protrusions 14 will be replaced with the description of the protrusions 13.

The protrusion part 13 of the leg body 11 is inserted in the groove part 39 of the roller 37 mentioned above. At this time, the rail contact surface 393 of the roller 37 and the roller contact surface 133 of the protrusion 13 are in contact with each other. Therefore, the load applied to the trolley 30 can be transferred to and supported by the guide rail 10 through the contact between the rail contact surface 393 and the roller contact surface 133, and the rail contact surface 393 and the roller contact surface 133. The width of may be increased or decreased in consideration of the magnitude of the load applied to the balance (30).

Meanwhile, referring again to FIG. 3, the four rollers 37, 37a, 38, 38a are distributed as shown. Among them, one of the pair of rollers 37 and 37a coupled to the rotary frame 33 on one side is disposed at one edge of the leg body 11, and the other head 37 a is leg body 11. It is placed on the other edge of the.

In addition, one of the pair of rollers 38 and 38a coupled to the rotating frame 34 on the other side 38 is disposed at one edge of the leg body 11, and the other 38 a is made of leg body 11. It is placed at the other edge.

Therefore, as shown in Figure 1, two of the four rollers (37, 37a, 38, 38a) (37, 38) is coupled to the protrusion 13 formed on one side of the leg body 11, the remaining two 37a and 38a are coupled to the other protrusion 14.

Therefore, the trolley 30 is coupled to the leg body 11 by four rollers 37, 37a, 38, 38a, and the trolley 30 is rotated by the rotation of the four rollers 37, 37a, 38, 38a. It can be moved along the longitudinal direction of the leg body 11.

On the other hand, the position of the four rollers (37, 37a, 38, 38a) by the structure as described above can be changed as shown by the curved arrow in FIG. Accordingly, the trolley 30 can be smoothly moved even when the leg body 11 of the guide rail 10 has a curved shape in one direction on a plane parallel to the main frame. This will be described with reference to FIG.

4 is a view for explaining the operation when the guide rail of the transport trolley according to an embodiment of the present invention is curved in one direction on a plane parallel to the main frame. It demonstrates with reference to FIG.

4 is a front view of the guide rail 10 and the bogie 30 viewed from the front. Referring to FIG. 4, the guide rail 10 has a curved shape curved on a plane parallel to the main frame. Here, the curvature 11a has the curvature radius RV2 of the one protruding portion 13, the curvature radius RV1 of the other protruding portion 14 and the curvature radius RV0 of the longitudinal center line CLR1 of the resin body 11a. All of these are curved to have the same center of curvature (C1).

In this case, the pair of rotating frames 33 and 34 are rotated, respectively, so that the positions of the four rollers 37, 37a, 38, and 38a are changed differently from those shown in FIG.

That is, the rotation center points CR1 and CR2 of the pair of rollers 37 and 37a coupled to the rotating frame 33 on one side are in a straight line crossing the centerline CLR1 of the curved legature body 11a vertically. Is placed to miss. In other words, the straight line CRL1 of the center of rotation shafts CR1 and CR2 of the pair of rollers 37 and 37a is located at the point where the pair of rollers 37 and 37a are positioned. It passes through the center point C1 of the radius of curvature.

In addition, the straight line CRL2 connecting the rotation center axes CR3 and CR4 of the pair of rollers 38 and 38a coupled to the rotary frame 34 on the other side is also a point where the pair of rollers 38 and 38a are located. The center of gravity of the radius of curvature of the leg body 11a in Essa passes.

Therefore, the transport trolley 1 according to the embodiment of the present invention has a guide rail 10 having a structure in which a pair of rotating frames 33 and 34 are relatively rotatable with respect to the main frame 31, respectively. Even when the curved shape is parallel to the main frame, the four rollers 37, 37a, 38, and 38a are stably coupled to the protrusions 13 and 14, so that the trolley 30 is made of Lepche. It can be moved smoothly along 11a.

At this time, the radius of curvature of the leg body 11a, in which the cart 30 can be smoothly moved, has a distance DS between the centers of rotation axes CS1 and CS2 of the pair of rotating frames 33 and 34 and a roller. It can be changed according to the distance DR between the central axes of (37, 37a).

Therefore, the arrangement of the distance DS between the pair of frame shafts 32 and 32a and the arrangement of the distance DR between the roller shafts 35 and 35a are in a plane parallel to the main frame 31 of the leg body 11a. It can be determined by considering the radius of curvature of.

Referring back to FIG. 5, the angle AR formed by the inclined surfaces 131 and 132 of the protrusion 13 is smaller than the angle AG formed by the inclined surfaces 391 and 392 of the groove 39. The same applies to the projections 14 and the remaining rollers 37a, 38, 38a, which are not described.

Accordingly, when the protrusion 132 is inserted into the groove 39, the roller contact surface 133 and the rail contact surface 393 may stably contact each other so that the load applied to the trolley 30 may be easily supported by the guide rail 10. Can be.

In addition, the above-described structure, that is, the angle AR formed by the inclined surfaces 131 and 132 of the protrusion 13 is smaller than the angle AG formed by the inclined surfaces 391 and 392 of the groove 39. Due to the structure formed, even when the guide rail 10 is curved on a plane intersecting with respect to the main frame, the trolley 30 may be smoothly moved along the guide rail 10. This will be described with reference to FIGS. 6 to 8.

6 to 8 are diagrams for explaining the operation when the guide rail of the transport trolley according to an embodiment of the present invention is curved on a plane intersecting with respect to the main frame.

6 and 8 are plan views of the guide rail 10 and the bogie 30 viewed from above. First, referring to FIG. 6, the guide rail 10 has a predetermined radius of curvature RH1 on a plane intersecting with the main frame. It has a curved shape, and the center of curvature C2 is formed.

Although not shown in detail, as described above with reference to FIG. 5, the angle between the inclined surfaces 131 and 132 of the protrusion 13 (AR, hereinafter referred to as 'protrusion angle') is the inclined surface of the groove 39 ( Since the angle between 391 and 392 (AG, hereinafter referred to as a 'groove angle') is smaller, a play is formed between the inclined surfaces 131 and 132 of the protrusion 13 and the inclined surfaces 391 and 392 of the groove 39. .

The operation of the roller 37 by such play will be described with reference to FIG. 7.

Referring to FIG. 7, the angle of rotation of the center of rotation CRL1 of the roller 37 and the longitudinal center axis CLR0 of the leg body 11 are changed within a predetermined range AB on the basis of orthogonal states. While the protrusion 13 is inserted into the groove 39, the roller contact surface 133 and the rail contact surface 393 may be in contact with each other.

Although not shown, assuming that the protrusion angle AR and the groove angle AG are the same, the inclined surfaces 131 and 132 of the protrusion 13 and the inclined surfaces 391 and 392 of the groove 39 are in contact with each other. In this case, in order to maintain the contact state between the roller contact surface 133 and the rail contact surface 393, the rotation center axis of the roller 37 and the rotation center axis of the guide rail 10 should be maintained perpendicular to each other. Therefore, when the protrusion angle AR and the groove angle AG are the same, the roller 37 may be stably coupled to the protrusion 13 only when the roller 37 is a straight guide rail 10 as shown in FIG. 1. have.

Therefore, in the case of the transport trolley 1 according to the exemplary embodiment of the present invention, the protrusion 13 is inserted into the groove 39 by the clearance caused by the difference between the protrusion angle AR and the groove angle AG. While maintaining, a predetermined range of angle change AB may occur between the rotational center axis of the roller 37 and the longitudinal center axis CLR0 of the legged body 11. This applies to all four rollers 37, 37a, 38, 38a and a pair of projections 13, 14.

For reference, as the difference between the protrusion angle AR and the groove angle AG increases, the size of the above-described play also increases, and as the play increases, the center of rotation of the four rollers 37, 37a, 38, and 38a and the leg body are increased. The changeable angle range AB between the longitudinal central axes of 11 can be increased.

Referring again to FIG. 6, when the leg body 11b is curved on a plane intersecting with the main frame as shown, four rollers 37, 37 a, 38, 38 a are coupled to the leg body 11 b. In the position, the angle formed by the center of rotation axes CR1, CR2, CR3, CR4 of the rollers 37, 37a, 38, 38a and the longitudinal center line CLR2 of the leg body 11b deviates from the vertical, but is described above. Since the four rollers 37, 37a, 38, and 38a can be stably coupled to the legature body 11b by one structure, the cart 30 can be smoothly moved along the leg body body 11b. Can be.

At this time, the rotating frame 33 of one side and the rotating frame 34 of the other side state as shown in Figure 3, that is, the center of rotation (CR1) of the roller (37, 37a) coupled to the rotating frame 33 of one side , The straight line CRL1 connecting the CR2 and the straight line CRL2 connecting the centers of rotation (CR3, CR4) of the rollers 38, 38a coupled to the rotating frame 34 on the other side are kept in parallel. Can be.

In FIG. 8, the center of curvature C3 of the legged body 11c shown is disposed in the other surface direction of the main frame (see 31 in FIG. 2) of the trolley 30.

The leg body 11c of FIG. 8 has a shape curved in a direction opposite to that of the leg body 11b of FIG. 6 on a plane intersecting with respect to the main frame, which is also the center axis of the pair of frame axes 32 and 32a. Since the center of curvature C3 is formed on an imaginary plane parallel to the CS1 and CS2 of FIG. 3, the curved plane and the radius of curvature RH2 are curved so as to be parallel to each other. For the same reason, the balance 30 can be smoothly moved along the leg body 11c.

For reference, as described with reference to FIGS. 6 to 8, the ranges of the radiuses of curvature RH1 and RH2 through which the bogie 30 can be smoothly moved along the levee bodies 11b and 11c having the curved shape are described. In addition to the difference between the protrusion angle AR and the groove angle AG as described above, the length DSP of the frame shafts 32 and 32a and the length DSR of the roller shafts 35 and 35a (one pair not shown) And the distance DS between the pair of frame axes 32 and 32a.

Therefore, when designing the transport trolley 1 according to the embodiment of the present invention, the curvature radii RH1 and RH2, the protrusion angle AR and the groove angle AG of the reinforcement bodies 11b and 11c, the frame, The length DS between the shafts 32 and 32a, the length DSR of the roller shafts 35 and 35a (a pair is not shown), and the distance DS between the pair of frame shafts 32 and 32a Can be considered together.

As described above, the transport trolley 1 according to the embodiment of the present invention, as necessary, the guide rail 10 is not only in the straight (see Fig. 1) section, but also in the main frame as shown in FIG. 6 may include a section extending in a curve on a plane parallel to each other, and a section extending in a curve on a plane intersecting with respect to the mainframe as shown in FIGS. 6 and 7. As such, the guide rail 10 may extend in various forms in three dimensions.

That is, since the shape of the guide rail 10 can be freely set according to the conditions of the space in which the transport trolley 1 is to be installed, the trolley 30 is transported in the most effective direction, thereby increasing the speed and the transfer efficiency. It can be obtained, and the length of the guide rail 10 to be installed can be minimized, thereby saving the resources and minimizing the space occupancy.

And, the guide rail 10 can be fixed by using a support, such as the ceiling and the wall surface, as well as the floor of the work site, so the space utilization can be increased, it can be minimized to cause trouble to the worker's movement The effect that convenience is improved can be obtained.

In addition, since the trolley | bogie 30 moves along the guide rail 10 by the rotation of the four rollers 37, 37a, 38, 38a, the number of components which move is small. Therefore, the transfer speed of the trolley 30 can be set faster than a transfer device such as a conveyor, and the noise generated can also be minimized.

For reference, in order to minimize the occurrence of noise, the four rollers (37, 37a, 38, 38a) may be made of a material having elasticity, such as synthetic resin or rubber. However, if a large load is applied to the four rollers (37, 37a, 38, 38a), the four rollers (37, 37a, 38, 38a) is made of a metal material and the surface is coated with synthetic resin or rubber to make noise It may also be possible to reduce the occurrence.

On the other hand, although not shown, in order to move the cart 30 along the guide rail 10, the driving means (not shown) may be added to the guide rail 10.

As the driving means, a wire or a chain may be used. For example, the wire or chain is installed along the guide rail 10, and the main frame 31 of the trolley 30 is coupled to the wire or chain, and the wire wound drum or the chain sprocket wheel is wound. The trolley 30 may be moved along the guide rail 10 by being rotated by a driving device such as a motor.

Alternatively, by installing a driving device such as a motor in the trolley 30 as a driving means, and the rotational force of the driving device is transmitted to one or more of the four rollers (37, 37a, 38, 38a), the trolley 30 is guide rail Can be moved along (10).

In this case, in order to increase the efficiency in which the rotational force of the rollers 37, 37a, 38, 38a by the driving device is transmitted to the guide rail 10, a plurality of protrusions are formed on the rollers 37, 37a, 38, 38a. Can be. This will be described with reference to FIG.

9 shows a roller of a transport trolley according to another embodiment of the present invention.

A groove 49 may be formed in the roller 47 of the transport trolley (not shown) according to another embodiment of the present invention, and the groove 49 has a pair of inclined surfaces 491 and 492 and a rail contact surface ( 493 may be formed.

Here, since the overall shape of the roller 47 is the same as the roller 37 described above, overlapping description is omitted. However, a plurality of protrusions 494 are formed on the rail contact surface 493 of the roller 47.

Although not shown, a plurality of grooves corresponding to the plurality of protrusions 494 may be formed on the roller contact surface (133 of FIG. 2) of the guide rail (see 10 of FIG. 2) which is in contact with the rail contact surface 493.

When the rotational force of the driving device as described above is transmitted to the roller 47 through the roller shaft 45 by the plurality of protrusions 494 and the plurality of grooves (not shown), the rollers 47 are slipped. The rotational force can be transmitted to the guide rail (see 10).

Therefore, using the roller 47 according to another embodiment of the present invention can improve the operating efficiency of the transport trolley (see 1 in Figure 1), it may be possible to precise position control of the trolley (30).

For reference, although not shown, the other side of the mainframe (31 in FIG. 2) is equipped with a hook or forceps, a robot arm, etc. to carry the goods so that the transport cart 1 is utilized to transport the goods. can do. In addition, the other surface of the main frame 31 may be equipped with a processing device, such as a drill or a cutting wheel, welding apparatus, etc. to be utilized in the automation of the manufacturing process.

While the transfer cart according to the embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea. Other embodiments may be easily proposed by adding, changing, deleting, or adding components, but this is also within the scope of the present invention.

1: Feed cart 10: Guide rail
11, 11a, 11b, 11c: Leniche 13, 14: protrusions
30: Balance 31: Mainframe
32, 32a: frame axis 33, 34: rotating frame
35, 35a: roller shaft 37, 37a, 38, 38a, 47: roller

Claims (7)

A guide rail having a pair of protrusions protruding in opposite directions from both edges along a length direction;
A trolley coupled to the guide rail so as to be movable along the longitudinal direction; And
Wire or chain, one side of which is coupled to the bogie and the other of which is wound on a drum or sprocket wheel driven by a motor
Including but not limited to:
The guide rails
A section extending in a straight line;
A first curved section extending in a curve on a plane parallel to the mainframe; And
A second curved section extending curvedly on a plane intersecting with respect to the mainframe,
The balance is,
Flat mainframe;
A pair of rotation frames rotatably coupled to the main frame, respectively; And
It includes two pairs of rollers coupled to each other by a pair rotatably to the pair of rotating frames,
Grooves into which the protrusions are inserted are formed on the outer circumferential surfaces of the two pairs of rollers,
One of the pair of rollers coupled to any one of the pair of rotating frames is disposed at one edge of the guide rail and the other is disposed at the other edge,
One of the pair of rollers coupled to the other of the pair of rotating frames is disposed at one edge of the guide rail and the other is disposed at the other edge,
The protrusion has a pair of inclined surfaces formed to decrease in thickness toward the edge of the guide rail, a roller contact surface is formed at the edge end of the guide rail,
The groove portion has a pair of inclined surfaces are formed such that the diameter is reduced toward the center of the roller in the axial direction, and a rail contact surface having a shape corresponding to the roller contact surface is formed at the minimum diameter of the outer peripheral surface of the roller,
An angle formed by the pair of inclined surfaces of the protruding portion is smaller than an angle formed by the pair of inclined surfaces of the groove portion.
delete The method of claim 1,
The shape of the cross section of the groove portion and the protrusion is trapezoidal, characterized in that the trap.
delete The method of claim 1,
A plurality of protrusions are formed on the rail contact surface, and a plurality of grooves corresponding to the protrusions are formed on the roller contact surface.
The method of claim 1,
Transfer roller, characterized in that the surface of the roller is coated with a synthetic resin or rubber.
The method of claim 1,
The material of the roller is a transport cart, characterized in that the synthetic resin or rubber.

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