KR20160097644A

KR20160097644A - Bogie for transparting

Info

Publication number: KR20160097644A
Application number: KR1020150019592A
Authority: KR
Inventors: 하헌석
Original assignee: 주식회사 브이텍; 하헌석
Priority date: 2015-02-09
Filing date: 2015-02-09
Publication date: 2016-08-18
Also published as: WO2016129797A1

Abstract

The present invention relates to a conveyance truck system.
According to the present invention, the fixed frame, in which the rolling bodies rolling on the guide rails are installed, is fixedly coupled to the main frame, so that the bogie can be made to travel with respect to the curved sections having various radii of curvature, Not only the failure rate can be significantly lowered but also the service life of the system can be greatly extended and the movement of the heavy object can be smoothly carried out by minimizing the shaking motion of the truck.

Description

[0002] BOGIE FOR TRANSPARTING [0003]

More particularly, the present invention relates to a transporting truck system, and more particularly, to a transporting truck system for transporting a truck to a main frame by fixing a fixed frame on which a rolling body rolling on a guide rail is installed, So that the noise and friction can be reduced, the failure rate can be significantly lowered, the life of the system can be greatly extended, and the weight of the vehicle can be smoothly transferred To a one-transfer trucking system.

In many industrial sites, it is often necessary to transport materials such as materials and parts. Therefore, various conveying devices such as conveyors and trolleys are used to increase the working efficiency.

However, since the conveyor is generally installed on the floor of the work site, it is necessary to consider the space in which the conveyor is installed from the beginning when considering the arrangement of various equipments in the work site. Since the conveyor occupies a lot of space, There is a disadvantage that it causes discomfort to the operator or movement of the worker.

In addition, when the conveyor, the trolley or the like described above is installed in such a manner that a lot of noise may occur during operation and the direction in which the articles are conveyed is changed, there is a limit in minimizing the radius of curvature, It may be very difficult or impossible to allow the article to be transported in the up-and-down direction with respect to the bottom surface of the container.

In order to solve the above-mentioned disadvantages, there has been proposed a ' conveying truck system ' capable of traveling along a guide rail, with a rotary frame on one side thereof being rotatably mounted on the main frame.

However, in the conventional art, since the rotating frame is rotatably provided with respect to the main frame, noise is extreme, and as the rotating frame is used, the absolute amount of rotation of the roller and the rolling body is large, There was a big problem and frequent breakdown.

In addition, the above-mentioned problems have a problem that the overall service life is short and excessive shaking occurs in the running process of the bogie, so that the heavy goods can not be smoothly transported.

Korean Patent No. 10-1046435 (June 28, 2011) Korean Patent No. 10-1412656 (June 20, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a rail- So that the noise and friction can be reduced, the failure rate can be significantly lowered, the life of the system can be greatly extended, and the weight of the vehicle can be smoothly transferred So as to provide a transportation system.

According to an aspect of the present invention, there is provided a conveyance truck system including a first curved section extending in a curved line on a plane parallel to a main frame, A guide rail including at least one of a second curve section extending in a curved line on a plane intersecting the frame and a straight extending section; and a carriage which is seated on the guide rail so as to run along the direction in which the guide rail extends The bogie comprising: a main frame; A pair of fixed frames coupled to and fixed to the main frame; Two pairs of rollers rotatably coupled to the fixed frames by a pair, the rollers contacting the protrusions of the guide rails and being rotatable by frictional force; And a pair of first and second rolling bodies provided so as to be in rolling contact with one side of the guide rail and in rolling contact with a surface of the guide rail facing the fixed frame, A rolling body having a pair of third and fourth rolling bodies in rolling contact with the opposite side surfaces of the rolling bodies; And the pair of first, second, third, and fourth rolling bodies may rotate in parallel with the center line of the straight extending section of the guide rail.

The contents described above as the rolling bodies of the present invention are one embodiment.

The rolling bodies of the present invention can be made into one by connecting the center points of the rollers in the fixed frame and adjusting the size of the two current rolling bodies at present. A more important part is to rotate the rolling body in parallel with the center line of the straight extending section of the guide rail, even if the rolling body is somewhat inferior in the curved section. This is because the problem of rotating the cloud body parallel to the center line of the straight extension section through the repeated experiment can contribute to smooth operation in the straight extension section although it brings a little friction in the second curve section, It has been found desirable for operation.

There are two types of curved sections in the present invention.

One of them is the first curve section. This is shown in FIGS. 10 and 12 as having a curved surface of the guide rail facing or facing the stationary frame. This first curve section is known to be able to be solved by making the groove portion of the roller V-shaped.

Next, there is a second curve section. 7 and 8, in which the surface of the fixed frame and the surface of the guide rail are parallel and the surface of the guide rail is formed in an annular shape. The most difficult and important task in the process of the present invention was to make the structure work well without any difficulty in the second curve section and the straight section of the guide rail while fixing the stationary frame completely. Also, in the product of the present invention, there may be two or more second curved sections with different radii of imaginary circles formed by curves, and it was more difficult to make a structure that can satisfy all of them.

There are two important angles to the invention. One of them is an inter-fixed-frame angle and is denoted by F in the present invention. F is the angle formed by imaginary lines connecting the center points of the two rollers formed on each fixed frame. Another angle is denoted by G as the second curve angle. G is an angle formed by connecting the center points of two rollers near the center point of the center point of the roller formed in each fixed frame of the main frame at the center point that the curve can form after the main frame is located in the second curve section, it means.

Therefore, it is a rule that F should be made at almost the same angle with principle that it does not differ greatly from G. However, many iterations have shown that F works well in the G15 range as long as it has positive angles and is at least one-fourth of G's. This is a very important point, and there may be more than two second curved sections with different radii, which is important for ensuring that these sections work in harmony.

Therefore, in the description of the present invention or the claims, the second curve section should be understood to mean one or more second curve sections rather than just one curve section.

A groove portion may be formed in at least one of the rollers and a projection portion of the guide rail contacting the groove portion may be formed to be tapered.

A pair of inclined surfaces are formed on the protruding portion so that the thickness of the protruding portion decreases toward the widthwise end of the guide rail, and a pair of inclined surfaces are formed in the groove portion such that the diameter decreases toward the axial center of the roller, The angle formed by the pair of inclined surfaces of the protruding portion may be made smaller than the angle formed by the pair of inclined surfaces of the groove portion.

The conveyance truck system includes a motor for generating driving force for driving a truck; A pulley coupled to a drive shaft of the motor; And a bogie drive means provided along the guide rail and including a wire rope or a chain wound on the pulley at one side and coupled to the bogie at the other side.

As described above, according to the conveyance truck system of the present invention, the fixed frame provided with the rolling bodies rolling on the guide rail against the guide rails is coupled and fixed to the main frame, so that the bogie can be fixed to the curved section having various radius of curvature So that noise and frictional force can be reduced to about 1/2 to 1/4 of that of the prior art.

According to the conveyance truck system of the present invention, a pair of fixed frames provided with two pairs of rollers and a pair of first, second, third and fourth rolling bodies are fixed to the main frame, It is possible to reduce the amount of rotation and minimize the relative movement, thereby reducing the friction between the roller and the rolling body and the guide rail, as well as significantly reducing the failure rate.

According to the conveyance truck system of the present invention, it is possible to reduce the noise and frictional force during conveyance of the truck, reduce the absolute amount of rotation of the rollers and the rolling bodies, and reduce the friction between the rollers and the rolling bodies and guide rails, (The lifetime of the roller and the rolling body is about five times as compared with the conventional technology, and the lifetime of the entire system is improved to about two times).

According to the conveyance truck system of the present invention, it is possible to stably and smoothly perform the conveyance of a heavy object (about twice the standard of the same standard equipment) by minimizing the shake during running of the truck.

According to the transfer truck system of the present invention, since the space occupancy is not set directly on the floor of the work site, the space utilization of the work site can be improved.

According to the conveyance truck system of the present invention, since the rolling body which is in contact with the inner side surface and the outer side surface of the guide rail and rolls is provided, the roller is prevented from being separated from the guide rail due to the moment acting on the carriage .

1 is a diagram showing the overall configuration of a conveyance truck system according to the present invention.
2 is a perspective view of a bogie for a transport bogie system in accordance with the present invention.
FIG. 3 is a view showing the angle between fixed frames formed by imaginary lines connecting the center points of two rollers formed on a pair of fixed frames according to the present invention.
FIG. 4 is a perspective view of a conveyance truck system according to the present invention, in which a truck runs along a straight section of a guide rail.
5 is a cross-sectional view taken along the line A-A 'in FIG.
6 is a front view of a truck of a transport truck system according to the present invention.
Fig. 7 is a diagram showing a state in which a bogie runs on a guide rail in part A of Fig. 1 in the conveyance truck system according to the present invention.
FIG. 8 is a view showing another embodiment in which the angle between the fixed frames formed by imaginary lines connecting the center points of two rollers formed on a pair of fixed frames according to the present invention is changed in FIG.
9 is an enlarged view of a portion C in Fig.
Fig. 10 is a diagram showing a state in which a bogie runs on a guide rail in part B of Fig. 1 in the conveyance truck system according to the present invention.
11 is a view showing an angle change between the rotational center axis of the roller and the longitudinal center axis of the rail body.
Fig. 12 is a view showing a state in which a bogie runs on a guide rail curved in a direction opposite to that of the guide rail in Fig. 10;
13 is a view showing a modification of the roller for the conveyance truck system according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. And is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In addition, unless otherwise defined, the terms used herein are the same as the general meaning of the term understood by those of ordinary skill in the art to which this invention pertains, , Reference is made to the definitions used herein, and the same reference numerals throughout the description refer to the same components.

In addition, the conveyance truck system 100 shown in this specification is completed through numerous repetitive experiments and technology development meetings, and can be implemented in various embodiments, and is not limited to the embodiments described herein. It adds.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The main terms of the present invention will be defined as follows.

The "center line" refers to the center line of the straight extension section of the guide rail on which the truck travels.

The "roller center point" refers to the center of gravity of two pairs of rollers which are brought into contact with the protruding portions of the guide rails and are rotatable by friction forces in a pair of fixed frames.

"Angle between fixed frames" refers to angles formed by imaginary lines connecting the centers of two rollers formed on a pair of fixed frames.

The "second curve angle" refers to an angle formed by imaginary lines connecting the centroids of the second curve segments and the center points of two rollers near the centroid.

The "centric point" refers to the center of an imaginary circle formed by extending the second curve section.

The conveyance bogie system 100 according to the present invention includes a guide rail 101, a pair of fixed frames 330 and 340 fixedly coupled to the main frame 310 and the main frame 310, And a pair of first and second rolling bodies 410, 420, and 380a that are in rolling contact with the surfaces of the guide rails 101 facing the fixed frames 330 and 340 with respect to the guide rails 101, And a pair of third and fourth rolling bodies 430, 440, 430a, and 440a that are in rolling contact with the opposite side surfaces of the fixed frames 330 and 340 with respect to the guide rail 101 A bogie 300 including a sieve, and bogie driving means.

The conveyance truck system 100 according to the present invention is configured such that the truck 300 is mounted on the guide rails 101 and can travel along the direction in which the guide rails 101 extend.

The guide rail 101 has a section 101a extending in a straight line (hereinafter referred to as a "straight section") and a section 101b, 101c extending in a curve (hereinafter referred to as a "curved section") And the like.

The linear section 101a of the guide rail 101 may be formed perpendicular to the ground, horizontal, or inclined. The straight line section 101a can be configured in various forms according to need, such as a length, a height to be positioned, an inclined angle with respect to the ground, and an extending direction.

The curved sections 101b and 101c of the guide rail 101 are disposed between any one straight section 101a and the other straight section 101a to change the direction in which the straight section 101a extends. The curved sections 101b and 101c include a first curved section 101b extending in a curve on a plane parallel to the main frame 310 of a carriage 300 described later and a first curved section 101b extending in a plane intersecting the main frame 310 And a second curved section 101c extending in a curved line. In this case, the plane parallel to the main frame 310 may be a plane perpendicular to the ground, and the plane intersecting the main frame 310 may be a plane horizontal to the ground. Accordingly, since the guide rail 101 is formed by mixing the straight section 101a, the first curved section 101b and the second curved section 101c, the guide rail 101 is extended along various paths in three dimensions .

The guide rail 101 includes a rail body 102 and a pair of protrusions 130 and 140 with respect to the width direction.

The rail main body 102 can be formed in a rectangular shape and can easily support the force applied to the rail main body 102 in the process of the carriage 300 traveling along the guide rail 101, The shape of the rail body 102 may be variously changed, for example, to have a shape in which a part is embedded to prevent interference between the rail body 102 and the rail body 102.

The pair of protrusions 130 and 140 protrude from opposite ends of the rail body 102 in the width direction and are formed along the longitudinal direction of the rail body 102, respectively. A pair of inclined surfaces 131 and 132 and a roller contacting portion 133 are formed on one of the protrusions 130 of the pair of protrusions 130 and 140 and a pair of inclined surfaces 141 and 142 are formed on the other protrusions 140. [ 142 and a roller contact portion 143 can be formed.

The carriage 300 is coupled to the guide rail 101 so as to be movable along the longitudinal direction of the guide rail 101. The bogie 300 includes a main frame 310, a pair of fixed frames 330 and 340, two pairs of rollers 370, 370a, 380 and 380a, first and second rolling bodies 410 and 420, The third rolling bodies 430 and 440, and the fourth rolling bodies 430a and 440a.

The main frame 310 may have a flat plate shape. On one side of the main frame 310, a pair of fixed frames 330 and 340 are fixedly coupled.

A pair of rollers 370, 370a, 380, and 380a, which are rotated by a frictional force, come into contact with the projections 130 and 140 of the guide rail 101 are rotatably coupled to the pair of fixed frames 330 and 340, The rollers 370, 370a, 380 and 380a coupled to the respective fixed frames 330 and 340 are disposed on both sides with the center FC of the fixed frames 330 and 340 interposed therebetween.

The rollers 370, 370a, 380 and 380a are coupled to roller shafts 350 and 350a (one pair is not shown) provided in the fixed frames 330 and 340. [

The two pairs of rollers 370, 370a, 380 and 380a rotate about the center points of the rollers RC1, RC2, RC3 and RC4 of the two pairs of roller shafts 350 and 350a Lt; / RTI > It is preferable that two pairs of roller shafts 350 and 350a (one pair is not shown) are installed parallel to the center line CL of the guide rail 101. [

370a, 380, and 380a may be formed with recessed groove portions 390 at the middle portion of the outer circumferential surface thereof, and the outer circumferential surface of the rollers 370, 370a, 380, and 380a may be formed into a flat cylindrical shape.

When the grooves 390 are formed on the outer peripheral surfaces of the rollers 370, 370a, 380 and 380a, the groove portions 390 are composed of a pair of inclined surfaces 391 and 392 and a rail contact portion 393, 370 in the axial direction. That is, the pair of inclined surfaces 391 and 392 are formed so as to have a shape inclined toward the central axis of rotation of the roller 370 from both ends of the outer peripheral surface of the roller 370 toward the intermediate portion, and a pair of inclined surfaces 391 and 392, A rail contact portion 393 is formed, which is a portion of the outer circumferential surface of the roller 370 having the smallest diameter. Therefore, the cross-sectional shape of the groove 390 has a trapezoid as shown in the figure. However, if the width of the rail contact portion 393 is small, the rail contact portion 393 may have a V shape.

A pair of inclined surfaces 131 and 132 and a roller contact portion 133 are formed on the protrusion 130 formed on the rail body 102. The pair of slopes 131 and 132 are formed such that the thickness of the protrusion 130 decreases toward the widthwise end of the rail body 102. The roller contact portion 133 is formed between the pair of slopes 131 and 132, . The roller contact portion 133 is formed to have a shape corresponding to the rail contact portion 393. Therefore, the cross-sectional shape of the protrusion 130 may have a trapezoid with the outline of the pair of inclined surfaces 131 and 132 and the roller contact portion 133. When the width of the roller contact portion 133 is narrow, It is possible.

A pair of inclined surfaces 141 and 142 and a roller contacting portion 143 are also formed on the protruding portion 140 formed on the other side of the rail body 102. The inclined surfaces 131 and 132 of the above- And the roller abutment portion 133, as shown in Fig.

The projecting portion 130 of the rail body 102 is inserted into the groove portion 390 of the roller 370. At this time, the load applied to the carriage 300 can be transmitted to and supported by the guide rail 101 through the contact between the rail contact portion 393 and the roller contact portion 133, and the load applied to the rail contact portion 393 and the roller contact portion 133, May be increased or decreased in consideration of the magnitude of the load applied to the carriage 300. [

On the other hand, a pair of rollers 370 and 370a provided on the fixed frame 330 are disposed on both sides in the width direction of the guide rail 101. [ One of the pair of rollers 370 and 370a coupled to the stationary frame 330 is disposed on one side in the width direction of the rail body 102 and the other rail 370a is disposed on the rail body 102, As shown in Fig. A pair of rollers 380 and 380a provided in the other fixed frame 340 are arranged in the same manner. Two of the four rollers 370, 370a, 380 and 380a are brought into contact with the projections 130 formed on one side in the width direction of the rail body 102 and the other two rollers 370a and 380a And is in contact with the projecting portion 140 formed on the other side in the width direction. Therefore, the bogie 300 is coupled to the rail body 102 by four rollers 370, 370a, 380, and 380a, and by the rotation of the four rollers 370, 370a, 380, and 380a, Travels along the longitudinal direction of the guide rail 101. Preferably, the carriage travels along the longitudinal direction on the basis of the center line CL, which is the center line to the straight extending section of the guide rail.

Meanwhile, a pair of fixed frames 330 and 340 fixedly coupled to the main frame 310 are installed at a certain angle (hereinafter, referred to as 'fixed frame angle F').

Here, there are two important angles to the present invention. One of them is an inter-fixed-frame angle and is denoted by F in the present invention. F is the angle formed by imaginary lines connecting the center points of the two rollers formed on each fixed frame. In other words, the fixed inter-frame angle F is the center point of the two pairs of rollers provided in the fixed frames 330 and 340, that is, the protrusions 130 and 130 of the guide rail 101 are fixed to the pair of fixed frames 330 and 340, A hypothetical line connecting the imaginary lines connecting the center points RC1 and RC2 of the rollers 370 and 370a provided to be rotatable by the frictional force and the center points RC3 and RC4 of the rollers 380 and 380a, . Another angle is denoted by G as the second curve angle. G is an angle formed by connecting the center points of two rollers near the center point of the center point of the roller formed in each fixed frame of the main frame at the center point that the curve can form after the main frame is located in the second curve section, it means.

Therefore, it is a rule that F should be made at almost the same angle with principle that it does not differ greatly from G. However, many iterations have shown that F works well in the G15 range as long as it has a non-negative positive angle and is at least one-fourth of G's.

On the other hand, with the above arrangement, the angle between a pair of roller center points RC3 and RC4 far from the center point with respect to the center point can be formed larger than the angle between a pair of roller center points RC1 and RC2 near the center point , The distance of a pair of roller center points RC3 and RC4 far from the center point with respect to the center point can be formed longer than the distance of a pair of roller center points RC1 and RC2 near the center point.

Since the fixed frame angle F can be freely formed within a certain range in this manner, the carriage 300 can have a shape curved in one direction on a plane parallel to the main frame 310 of the guide rail 101 It is possible to smoothly run the vehicle.

The guide rail 101 has a curved shape in a plane parallel to the main frame 310. The rail main body 102 has a curvature radius RV2 of the one projecting portion 130, a curvature radius RV1 of the other projecting portion 140 and a curvature radius RV0 of the longitudinal centerline CLR1 of the rail main body 102, All of which are curved so as to have the same curvature center point C1. The center point RC1 of the pair of rollers 370 and 370a coupled to the fixed frame 330 on one side when the bogie 300 travels on the guide rail 101 curved on a plane parallel to the main frame 310, And RC2 are positioned on a line perpendicular to the center line CLR1 of the rail body 102 and a pair of rollers 380 and 380 coupled to the stationary frame 340 on the other side, The fixed frame 340 is positioned such that the center points RC3 and RC4 of the rail main body 380a are positioned on a line perpendicular to the center line CLR1 of the rail main body 102. [ A straight line CLR2 connecting the straight line CLR1 connecting the center points RC1 and RC2 of the pair of rollers 370 and 370a to the center points RC3 and RC4 of the other pair of rollers 380 and 380a Passes through the center point (C1) of the radius of curvature of the rail main body (102).

The radius of curvature of the rail main body 102 on which the carriage 300 travels is determined by the distance DS between the central axes CS1 and CS2 of the pair of fixed frames 330 and 340 and the distance between the center axis CS1 of the rollers 370 and 370a And can be changed according to the distance DR between the axes. The arrangement of the distance DS between the central axes CS1 and CS2 of the pair of fixed frames 330 and 340 and the distance DR between the roller axes 350 and 350a is thus determined by the main Can be determined in consideration of the radius of curvature on the plane parallel to the frame 310. [

The angle AR formed by the inclined surfaces 131 and 132 of the protruding portion 130 is formed to be smaller than the angle AG formed by the inclined surfaces 391 and 392 of the groove portion 390. [ This applies equally to the unrepresented protrusion 140 and the remaining rollers 370a, 380 and 380a. The roller contact portion 133 and the rail contact portion 393 stably contact with each other when the protrusion 132 is inserted into the groove portion 390 so that the load applied to the carriage 300 can be easily supported by the guide rail 101 .

In addition, by the structure in which the angle AR formed by the inclined surfaces 131 and 132 of the projection 130 is formed to be smaller than the angle AG formed by the inclined surfaces 391 and 392 of the groove portion 390, Even when the rail 101 extends in a curved line on a plane intersecting the main frame 310, the carriage 300 can smoothly run along the guide rail 101. [

The guide rail 101 extends in a curved line at a predetermined curvature radius RH1 on a plane parallel to the main frame 310 and has a curvature center point C2.

An angle AG between the inclined surfaces 391 and 392 of the groove portion 390 is hereinafter referred to as a 'groove angle' (hereinafter referred to as a 'groove angle') between the inclined surfaces 131 and 132 of the protrusion 130 A clearance is formed between the inclined surfaces 131 and 132 of the protrusion 130 and the inclined surfaces 391 and 392 of the groove portion 390. [

11, the rotational center axis CRL1 of the roller 370 and the longitudinal center axis CLR0 of the rail main body 102 are angularly changed within a predetermined range AB based on a state where they are perpendicular to each other, The protrusion 130 is inserted into the groove 390 so that the contact between the roller contact portion 133 and the rail contact portion 393 can be maintained.

The inclined surfaces 131 and 132 of the projection 130 and the inclined surfaces 391 and 392 of the groove 390 are brought into contact with each other assuming that the projection angle AR and the groove angle AG are the same. At this time, in order for the roller contact portion 133 and the rail contact portion 393 to be in contact with each other, the rotation center axis of the roller 370 and the guide rail 101 should be maintained perpendicular to each other. Therefore, when the protruding angle AR and the groove angle AG are the same, the roller 370 can be stably coupled to the protruding portion 130 only when the roller 370 is the straight guide rail 101.

The projecting portion 130 is inserted into the groove portion 390 by the clearance due to the difference between the projecting angle AR and the groove angle AG in the case of the conveyance truck system 100 according to the present invention, And a longitudinal center axis CLR0 of the rail main body 102. The angular change AB of the predetermined range may occur between the central axis CLR0 of the rail main body 102 and the center axis of the rail main body 102. [ This applies both to the four rollers 370, 370a, 380, 380a and to the pair of protrusions 130, 140. As the difference between the protruding angle AR and the groove angle AG is increased, the aforementioned clearance size is also increased. As the clearance is increased, the rotation center axis of the four rollers 370, 370a, 380 and 380a, The variable angular range AB between the longitudinal center axes of the first and second actuators 102 can be increased.

370a, 380, and 380a are coupled to the rail body 102 when the guide rail 101 extends in a curved line on the plane intersecting the main frame 310. The rollers 370 and 370a RC4 and RC4 of the rail main body 102 and the longitudinal center line CLR2 of the rail main body 102 are deviated from the vertical direction but the four rollers 370 370a, 380, and 380a can stably maintain contact with the rail main body 102, so that the carriage 300 can smoothly run along the rail main body 102. [

The guide rail 101 has a shape curved in a direction opposite to the guide rail 101 on a plane intersecting the main frame 310. The guide rail 101 is also parallel to the center axis of the pair of frame shafts 320 and 320a Since the curvature center point C3 is formed on the virtual plane and the curved shape is curved such that the imaginary plane and the curvature radius RH2 are parallel to each other, the bogie 300 can be smoothly moved along the rail main body 102 .

As described above, according to the present invention, since the shape of the guide rail 101 can be freely set according to the condition of the space in which the conveying carriage 300 is to be installed, The conveying speed and the conveying efficiency can be increased and the length of the guide rail 101 installed can be minimized so that the saving of resources and the occupation of space can be minimized .

Since the guide rail 101 can be fixed not only on the bottom surface of the work site but also on a ceiling and a wall surface by using a support stand or the like, space utilization can be increased and minimization of inconvenience to the movement of the worker The effect of improving the convenience can be obtained.

Further, since the carriage 300 is moved along the guide rail 101 by the rotation of the four rollers 370, 370a, 380 and 380a, the number of parts to be operated is small. Therefore, the conveying speed of the carriage 300 can be set faster than the conveying device such as a conveyor, and the generated noise can be minimized.

For reference, in order to minimize the generation of noise, the four rollers 370, 370a, 380 and 380a may be made of a material having elasticity such as synthetic resin or rubber. However, when a large load is applied to the four rollers 370, 370a, 380 and 380a, the four rollers 370, 370a, 380 and 380a are made of a metal material, So that the occurrence can be reduced.

The bogie drive means may include a motor 500, a pulley 520, and a wire rope 540 (including a "chain"). The motor 500 is provided on one side of the guide rail 101 and the pulley 520 is coupled to the drive shaft of the motor 500 and rotated by the motor 500. The wire rope 540 is provided along the guide rail 101 and one side of the wire rope 540 is wound on the pulley 520 and the other side is coupled to the carriage 300. The motor 500 generates driving power for driving the bogie 300 and the driving power is transmitted to the bogie 300 through the wire rope 540 wound on the pulley 520 so that the bogie 300 is guided by the guide rail 101).

In another embodiment, the roller 470 may be provided with a groove 490 and the groove 490 may be formed with a pair of inclined surfaces 491 and 492 and a rail contact portion 493. Here, the overall shape of the roller 470 is the same as that of the roller 370 described above, so that a duplicate description will be omitted. However, a plurality of projections (not shown) may be formed on the rail contact portion 493 of the roller 470.

When the rotational force of the driving device is transmitted to the roller 470 through the roller shaft 450 by the plurality of projections, the roller 470 can transmit the rotational force to the guide rail 101 without slipping. Accordingly, by using the roller 470 in which a plurality of projections are formed, the operating efficiency of the carriage 300 can be improved and precise position control of the carriage 300 may be possible.

The gripping means 700 is provided on the opposite side of the main frame 310 on which the rollers 370, 370a, 380 and 380a are provided and gripped by the gripping means 700, (Not shown). The product is fixed to the carriage 300 by the holding means 700 so that the carriage 300 moves in unison with the carriage 300 when the carriage 300 travels along the guide rail 101. The gripping means 700 may be in the form of a hook, a forceps, a robot arm, or the like, and may be of various forms capable of fixing a product to the carriage 300. [

The main carriage 300 and the fixed frames 330 and 340 are kept in contact with the guide rail 101 by the rollers 370, 370a, 380 and 380a in the present invention, 370a, 380, and 380a, the center of gravity of the carriage 300 is not formed on the line where the rollers 370, 370a, 380, 380a and the guide rail 101 are in contact with each other, There is no choice but to be. Therefore, a moment acting on the rollers 370, 370a, 380, and 380a, which acts as a force for releasing the guide rail 101, always acts.

In order to prevent the rollers 370, 370a, 380 and 380a from being separated from the guide rail 101 by such a moment, the bogie 300 is provided with the first rolling bodies 410 and 420, the second rolling bodies 410a 420a, third rolling bodies 430, 440 and fourth rolling bodies 430a, 440a.

The first rolling bodies 410 and 420 are rotatably provided on the surface facing the fixed frames 330 and 340 but are provided at positions higher than the center axes CS1 and CS2 of the fixed frames 330 and 340, The rolling bodies 410a and 420a are rotatably provided on the rollers 370 and 380 provided at positions lower than the center axes CS1 and CS2 of the fixed frames 330 and 340. [

The first rolling bodies 410 and 420 and the second rolling bodies 410a and 420a are fixed to the fixing frames 330 and 340 in the guide rail 101 in a state where the carriage 300 is mounted on the guide rail 101. [ And the third rolling bodies 430 and 440 are in contact with the surfaces of the guide rails 101 opposite to the fixed frames 330 and 340 (Hereinafter referred to as " outer surface of guide rail 101 "). The rotational axes of the first rolling bodies 410 and 420 and the second rolling bodies 410a and 420a are orthogonal to the roller axes 350 and 350a of the rollers 370, 370a, 380 and 380a. The first and second rolling bodies 410 and 420 and the second rolling bodies 410a and 420a are provided on the fixed frames 330 and 340 respectively. .

The first rolling bodies 410 and 420 are brought into contact with the inner surface of the guide rail 10 at a position higher than the center axes CS1 and CS2 of the fixed frames 330 and 340, The rolling bodies 410a and 420a are brought into contact with the inner surface of the guide rail 10 at a position lower than the center axes CS1 and CS2 and the third rolling bodies 430 and 440 are brought into contact with the center of the fixed frames 330 and 340 The fourth rolling bodies 430a and 440a contact the outer side surfaces of the guide rails 10 at positions higher than the axes CS1 and CS2 and are positioned at positions lower than the center axes CS1 and CS2 of the fixed frames 330 and 340 The carriage 300 rotates in parallel with the center line CL of the linear extension section of the guide rail 101 when the carriage 300 travels and the carriage 300 is rotated along the guide rail 101 in a stable manner.

The first, second, third, and fourth rolling bodies 410, 420, 410a, 420a, 430, 440, 430a, and 440a having the above-described configuration are connected to the center line CL of the straight extending section of the guide rail 101 So as to be installed in parallel.

On the other hand, the first rolling body brackets 450 and 460 may be provided on the rollers 370 and 380 in order to couple the rollers 370 and 380 and the third rolling bodies 430 and 440, have. One side of the first rolling body bracket 450 and 460 is coupled on the roller shaft 350 of the rollers 370 and 380 and the third rolling body 430 and 440 is rotatably coupled to the other side.

The third rolling bodies 430 and 440 are disposed on the roller shaft 350 of the rollers 370 and 380 provided at positions higher than the center axes CS1 and CS2 of the fixed frames 330 and 340, The positions where the second rolling bodies 430 and 440 are provided are not limited thereto and the center axes CS1 and CS2 of the fixed frames 330 and 340 may be connected to the first and second rolling bodies 430 and 440, And may be provided at various positions of the fixed frames 330 and 340 which are in contact with the outer surface of the guide rail 10 at a higher position.

Since the first rolling bodies 410 and 420 and the third rolling bodies 430 and 440 can perform rolling motion while being in contact with the guide rail 101, 370, 370a, 380, 380a can be prevented from being detached from the guide rail 101, and does not interfere with the guide rail 101 during travel of the carriage 300, so that the carriage 300 is not affected.

The third rolling bodies 430 and 440 are provided so as to be in contact with the outer surface of the guide rail 101 but at positions higher than the center axes CS1 and CS2 of the fixed frames 330 and 340, 430a and 440a are provided to be in contact with the outer surface of the guide rail 101 and at a position lower than the central axes CS1 and CS2 of the fixed frames 330 and 340. [

At this time, the fourth rolling bodies 430a and 440a can be coupled to the carriage 300 by the second rolling body brackets 450a and 460a in the same manner as the first rolling body brackets 450 and 460.

One side of the second rolling body brackets 450a and 460a is connected to rollers 370a and 380a provided at positions lower than the central axes CS1 and CS2 of the fixed frames 330 and 340 among the rollers 370, 370a, 380, and 380a And the fourth rolling bodies 430a and 440a are coupled to the other side. The first and second rolling bodies 430 and 440 are positioned at positions higher than the central axes CS1 and CS2 of the fixed frames 330 and 340 so that the inner surface of the guide rail 101 And the second rolling bodies 410a and 420a and the fourth rolling bodies 430a and 440a are positioned at a lower position than the center axes CS1 and CS2 of the fixed frames 330 and 340, The rollers 370, 370a, 380, and 380a are more reliably prevented from being separated from the guide rail 101 by the external force acting on the carriage 300 by rolling in contact with the inner side surface and the outer side surface of the guide rails 101, respectively.

That is, in the present invention, the guide rail 101 is extended in various paths on three dimensions by combining the straight section 101a and the curved sections 101b and 101c. Accordingly, the truck 300 traveling on the guide rails 101 can be placed in various directions. For example, although the rollers 370, 370a, 380 and 380a according to the present invention are shown as being laid in the vertical direction, the rollers 370, Can be rotated on the guide rail 101 in a rotated state or at other angles.

The first, second, third and fourth rolling bodies 410, 420, 410a, 420a, 430, 440, 430a and 440 according to the present invention having the above- In a predetermined position.

The first, second, third and fourth rolling bodies 410, 420, 410a, 420a, 430, 440, 430a and 440 according to the present invention are arranged to be parallel to the traveling direction of the fixed frames 330 and 340 It is preferable to install it.

Meanwhile, as described above, the number and position of the rolling bodies provided on the carriage of the conveyance truck system according to the present invention can be variously changed.

As described above, when the first, second, third, fourth, and the rolling bodies 410, 420, 410a, 420a, 430, 440, 430a, and 440 are positioned above and below the central axes CS1 and CS2 of the fixed frames 330 and 340 The rollers 370, 370a, 380, and 380a are in a state in which they are seated at the correct positions on the guide rails 101, regardless of the direction in which the bogie 300 is placed, since they are in contact with the inner side surface and the outer side surface of the guide rail 101 Can be maintained.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: transportation system,
101: Guide rail,
102: rail body,
130, 140: protrusions,
131, 132: inclined surface,
133, 143: roller contact portion,
300: Balance,
310: main frame,
320, 320a: frame axis,
330, 340: fixed frame,
370, 370a, 380, 380a: rollers,
390, 490:
391, 392, 491, 492: inclined surface,
393, 493: rail contact,
410, 420: first cloud body,
410a, 420a: second cloud body,
430, 440: third cloud body,
430a, 440a: fourth cloud body,
450, 460: first rolling body bracket,
450a, 460a: a second rolling body bracket,
500: motor,
520: poly,
540: Wire rope,
700: gripping means,
AR: the angle between the projection slopes,
AG: Angle between the groove portion inclined surfaces,
C2: curvature center point,
CLR1: Center line of the rail body,
CL: straight line extension of guide rail Center line,
RC1, RC2, RC3, RC4: Center point of the roller,
CLR0: longitudinal center axis of the rail body,
CRL1: rotation center axis of the roller,
CS1, CS2: central axis of the fixed frame,
DS: distance between fixed frame center axes,
DR: Distance between the roller rotation center axis,
F: fixed inter-frame angle,
G: second curve angle,
RH1: Curvature radius,
RC1, RC2, RC3, RC4: Roller center point.

Claims

A guide rail having protrusions protruding in opposite directions at both ends in the width direction and including at least one of a first curved section or a second curved section and a straight extending section; And a bogie that is seated in the guide rail, the bogie system comprising:
The bogie comprises:
Mainframe;
A pair of fixed frames coupled to and fixed to the main frame;
Two pairs of rollers rotatably coupled to the fixed frames by a pair, the rollers contacting the protrusions of the guide rails and being rotatable by frictional force; And
And at least one rolling body rotatable so as to be in rolling contact with the outer side of the guide rail and rotated in parallel with the center line of the straight extending section of the guide rail for each fixed frame.

The conveyance truck system according to claim 1, wherein at least one rolling body rotating in parallel with the center line of the straight extending section of the guide rail is formed between the guide rail and the fixed frame.

The method according to any one of claims 1 to 2,
The fixed frame interframe angle F formed by imaginary lines connecting the center points of the two rollers formed on each of the fixed frames has a positive angle and the curve is formed after the main frame is positioned in the second curved section (G) formed by connecting two roller center points near the center point of the center points of the rollers formed in the respective fixed frames of the main frame to the center point at a central point at which the second curved line G).

The method of claim 3,
Wherein the fixed inter-frame angle (F) is 10 of a second curve angle (G) formed by connecting a center point of the second curved sections to a center point of two rollers close to the center point.

The method according to claim 1,
Wherein a groove portion is formed in at least one of the rollers and a projection portion of the guide rail contacting the groove portion is tapered.

The method according to claim 1,
A pair of inclined surfaces are formed on the protruding portion so that the thickness of the protruding portion decreases toward the widthwise end of the guide rail, and a pair of inclined surfaces are formed in the groove portion such that the diameter decreases toward the axial center of the roller, Wherein an angle formed by a pair of inclined surfaces of the projecting portion is smaller than an angle formed by a pair of inclined surfaces of the groove portion.

The method according to claim 1,
The conveyance truck system comprises:
A motor for generating a driving power for driving a truck;
A pulley coupled to a drive shaft of the motor; And
Further comprising a bogie drive means provided along the guide rail, the bogie drive means including a wire rope or chain that is wound on the pulley on one side and coupled to the bogie on the other side.