KR20020035061A - A front-rear sliding style of a train or subway train wheel and bracket - Google Patents

Abstract

PURPOSE: Structure for train, wheel, and support having a circular coil spring is provided to automatically transfer a wheel by a spring and to prevent an accident. CONSTITUTION: Structure for train, wheel, and support containing a circular coil spring comprises a lower cover combined to an outer support; a circular coil spring(5) inserted to a hole of an inner diameter of a wheel(12); a bearing(10) inserted to the hole by being combined to a cylinder boss(9); a circular bar shape shaft(8) fixed by inserting a key(7) into a groove of the cylinder boss; and a rail(11). The angular ball bearing is rotated with a specific angle by being inserted to a hole penetrating a middle portion of the wheel. Thereby, the structure for the train, wheel and support containing the circular coil spring automatically transfers the wheel by the spring. Moreover, the structure for the train, wheel and support containing the circular coil spring prevents an accident.

Description

Train and subway wheels and support structures with a circular coil spring structure on the outside of the shaft and before and after the wheel. {A FRONT-REAR SLIDING STYLE OF A TRAIN OR SUBWAY TRAIN WHEEL AND BRACKET}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for supporting wheels and wheels mounted on a lower surface of a passenger car of a subway and a train, and a briquette of a spring device and a sliding device structure. Support and bearings enter the wheel to support the shaft to the outside and prevent the bearing from being disengaged from the wheel. The structure is coupled to the lower surface of the car by bowling. The wheels are rotated forward and backward by rotating structure and self-government, and they have been used. These structures are fixed by rails supported by sleepers on the ground, but the metal is deformed due to climate change and vibration. Increase in winter and decrease in winter. Due to the heavy and repeated operation and the two factors caused by the fatigue load, the rails, which must be constantly placed in parallel, were deformed and the gaps became irregular and widened and narrowed.Therefore, there was a high risk of derailment safety accidents during operation. Operators have been required to check, repair and risk by putting a lot of manpower, equipment and money on dangerous tracks to keep the rails parallel and spaced. On the other hand, the present invention is an invention in which such a problem is solved. The field is a metal processing industry, a structural machining field, and a transportation industry.

As described above, the present invention has been made as the present problem selected in order to solve and improve the problem with the improved invention in the conventional industrial parts and problems, technical level as follows.

First, to make the manufacturing industry attractive to the manufacturing industry, the mass production is made attractive, and the 3S education is a technical task to reduce cost and compatibility through minimizing the manufacturing cost. As standardization, it can be manufactured with compatibility and standard standard so that it can be used in all conventional trains and subways, and standardization is simplified, and standardized shape is simplified to make efficiency, aesthetics and cost reduction during manufacturing. It is designed to improve the efficiency and improvement of the components, and it is a structure that combines the components of the components by purchasing the existing commercially available bearings and circular coil springs and minimizes the number of components. It has a symmetrical structure and it is a structure that can be efficiently assembled after processing. In addition, the coupling structure is designed to be separated and combined by bowling at the bottom and outside for ease of repair or replacement. The structure and shape for the safety and efficiency of transportation, handling, and processing are round and conventional processing methods. With the structure that introduced the key, the boss, the support and the lower cover is to be cast and cut machining.

Second, in order to be effective in the use of users in the industry, the technical task considering the handling, economic and functional aspects was taken. As a handling surface, each component was safely structured. When assembling, the weight and structure for safe transportation and installation by the handler were rounded and sized, and the processing efficiency during processing was improved, and the economic aspect was standardized and standardized. The structure is designed to be efficient in mass production and repetitive productivity, so that it can be saved in compatibility and repair. Especially, it is composed of two types of structure for long axis and short axis. The structure is designed to reduce the weight, and the function of the spring device is that the wheel is automatically adjusted before and after the wheel is coupled by the key to the inner shaft by the spring. By spring device from losing part One will be the position of the wheel is turned is adjusted to the same is returned to the original state. In other words, the rails do not need to be adjusted and checked for the entire interval, and the rails are naturally adjusted stably in place due to the wheels.

1 is an overall assembly view of a first type in which a lower cover is coupled to an upper dish type structural support having a front and rear symmetrical structure, and is a front view, a plan view, and a right side view.

2 is an overall assembly view of a second type in which the lower cover is coupled only to the front surface of the upper dish type structural support of left-right symmetry, front-back asymmetric structure, and is a front view, a plan view, and a right side view.

3 is an overall assembly view of the third type in which the front and rear cover is coupled to the upper dish structure support of the front and rear symmetrical structure, and is a front view, a plan view, and a right side view.

Fig. 4 is a front view and a left side view of a cylindrical long axis, which is a cylindrical structure having a small diameter in a stepped structure on the left and right sides.

Fig. 5 is a front view and a left side view in which the rectangular groove is longitudinally symmetrically in a cylindrical structure with a cylindrical structure as a wheel short axis.

Figure 6 is a boss entering the inside of the wheel, the inside is a front view, a left side view, and a part view of a structure in which square grooves are symmetrically up and down in a penetrating circle.

Fig. 7 is a front view, a right side view, and a part view of a structure in which a wheel is formed as a wheel, the inside of which is a circular through structure, and the outside is a symmetrical circular groove.

FIG. 8 is an assembled view of a structure in which only the upper dishing support and the lower cover of the first type of FIG. 1 are coupled up and down, and are a front view, a plan view, and a right side view.

Fig. 9 is a part view which is combined with a lower front and rear cover as an upper dish type support of the first type, and is a front view, a plan view, and a right side view.

Fig. 10 is a part view which is combined with the upper support as the upper dish type support and the lower front and rear cover of the first type, and is a front view, a plan view, and a right side view.

11 is a part view of the lower front and rear covers of the structure in which the axes applied to the first type and the third type are coupled in a long axis structure, and are a front view, a plan view, and a right side view.

FIG. 12 is a top support of a dish-type bilaterally symmetrical, front and rear asymmetric structure of the second type of FIG. 2, and is a part view, a front view, a plan view, and a right side view. The lower cover is a structure in which all of the lower cover is coupled.

FIG. 13 is a component diagram of the third type upper dishing support of FIG. 3 coupled to the front and rear covers, and is a front view, a plan view, and a right side view.

FIG. 14 is a front view, a plan view, and a right side view of a lower front and rear cover which are engaged with the upper dish type support of the third type of FIG.

FIG. 15 is a perspective view of FIG. 3 perspectively. FIG.

The present invention solves the problems of the prior art as described above, to be a novel and improved invention in the prior art level by selecting a technical problem and using the natural law so that ordinary people in the field can be effectively and easily implemented. As a creation, the relationship between the principle and function of technology, which is a technical idea, and the shape and structure, which are the components, was as follows.

1 is a coupling diagram in which a wheel 12 of the first type, a circular coil spring 5, a sliding device, an upper supporter 2-a, and a lower cover 6 are combined. As a device coupling relationship, the wheel 12 has a short cylindrical shape, and both surface structures are symmetrically protruded with a large diameter different from the conventional wheel shape, and the part touching the rail is a stepped binary structure with a small diameter that enters the inner surface. In the inside of the diameter of the wheel 12, it has a circular through structure, and in the through hole boss, there is a stepped structure into a circular groove larger than the symmetrically penetrated hole on the outside, where there is a circular coil spring (5). The circular coil spring 5 inserted into the wheel 12 and the wheel 12 in the upper supporter 2-a and the lower cover 5 up and down by being inserted back and forth is coupled back and forth.Been fitted to the steering 10 and the inner cylindrical boss 9 and the round bar-shaped shaft 8 coupled been be is a bond. The bearing 10 is an angular ball bearing 10 having a structure in which the bearing ball is rotated by a predetermined angle from the inner and outer rings before and after the wheel 12, and the rail is the rail with the wheel in the angled part of the railway ( 11) The angular ball bearing 10 acts as an angular rotation when driven upwards to provide a cushioning function to prevent derailment, and the hollow cylindrical inner boss 9 has a cylindrical structure with an annular shaft ( 8) is a circular through hole so that the top and bottom of the through hole is a rectangular buried key (7) groove is outside from the hole through which the buried key (7) is inserted there and the round bar shaft ( 8) It can be transported along the axial surface back and forth by the elastic force of the circular coil spring (5) along the outer surface and the angular ball bearing (10) is fitted to the outside of the hollow cylindrical inner boss (9) The angular ball bearing 10 and the hollow cylindrical inner boss 9 are simultaneously fitted to the inside of the wheel 12 so that the outer wheel 12 is rotated. The round rod shaft 8 has a cylindrical structure. Square buried key (7) grooves are symmetrical on the outer rod face with the outer length face, and the buried key (7) of the cuboid is inserted therein so that the round bar shaft (8) is fixed and the inner boss of the inner cylinder is fixed to the outside. (9) is fixedly coupled by the rod-shaped shaft (8) and buried key (7), the angular ball bearing 10 is fitted to the outside of the wheel 12 is fitted to the outside of the angular ball bearing (10) By the wheel 12 is to be rotated with the angular ball bearing 10. At the end of the cross section of the length, the square shape is symmetrical in the unitary structure. The square structure portion of the round bar shaft 8 is fitted into the square groove of the center of the lower outer cover 6 so that the round bar shaft 8 is fixed. It is designed to prevent rotation. Wheel 12 Combination Structure The support structure 2-a of the outer superstructure is a structure in which the cover 6 and the bowling 3 of the lower cover 6 are coupled to each other. Is symmetrical front and back and left and right has a horizontal flat structure on the upper surface has four female screw seats from side to side, where the entire structure is fixedly coupled to the lower surface of the upper carriage 1 by bolts (3-a). The left and right side portions of the upper dishing support (2-a) have an integral vertical plate structure having a rib function from a part of the upper portion of the middle portion to the lower end portion, and a lower cover (6) in the lower left and right side portions with a female screw structure on the front and rear surfaces. And bowling (3), and the semicircular groove at the center is opened at the lower surface at the front, and the two female threaded seats are symmetrically at the center at the front and rear vertical plate structure. The lower front and rear cover 6 is fixed there by the bowling (3). The structure, shape and coupling of the lower cover 6 are combined by the upper dishing type support (2-a) and the bowling (3), and are individually separated in front and rear symmetry. It is made of through hole, the lower part is semi-circular structure and the lower part is straight structure, and the upper part is semi-circular shape, and it is a flat plate that protrudes to the front outside from the surface. A semicircular groove, which is a seat for fixing and engaging the square cross-sectional structure of the inner end of the inner rod shaft 8 at the rear part, and a rectangular through hole at the center thereof, and the whole is a front and rear upper dishing support (2-a). ) Bolt (3) is inserted into the female thread seat so that the upper dishing type support (2-a) and the lower front and rear cover (6) overlap the bowling part at the same time. Outside the burr 6, the bolt 3 and the washer 4 are fixedly coupled therein, and inside the wheel 12, the circular coil spring 5, the angular ball bearing 10, and the inner hollow cylindrical boss ( 9), the entire structure of the rod-shaped shaft 8 and the buried key 7 is combined.

As a principle and function of the technology, which is an applied technical idea, all the coupling components are all metal-bonded materials. Iron ore, which is a raw material, is made into a necessary material through physical and chemical treatment using a blast furnace, and the material made by each metal characteristic material is structurally According to the principle of power governing and the principle of energy conservation through the machining operation using physical force and heat physically using a machine or mold in the shape of the necessary purpose The object cannot endure, and deformation such as breaking, cutting or bending occurs, and such force is chemically mixed or compounded, and the property is applied to separate and combined so that the fluid or form is deformed. According to the design prepared in advance, All components such as the sub supporter (2-a) and the lower cover (6) are melted iron ore and made into a fluid and classified according to their characteristics. The fluid is a mold, which is a mold, and the appearance is made by using a molding sand. It is made in the shape of the present invention required to make the primary object mold, and the molten metal is melted there by heat by heat, and the heat cools down. It is made of the finished component by cutting, drilling, tapping through it, and machining is converted into force energy according to the law of conservation of energy. It is a tool such as a cutter, a bite, a drill, etc. When cutting force on metal with a stronger tool, the metal is machined into the shape and structure precisely required according to the dimensions and specifications of the invention, which is the object of this invention, according to the design prepared in advance according to the principle that the metal cannot be tolerated and processed according to the force. The angular ball bearings 10 and the circular coil springs 5 are purchased from commercially available commercially available products, and have an annular shaft (8) and a hollow cylindrical internal boss (9) or a cuboid buried key (7). The surface of the outer cylindrical surface of the wheel 12, which is also made of the metal material of the flat plate and the round bar, has the same processing principle and process by physical and chemical methods as described above, and is structurally in contact with the rail rail 11 surface. The surface is hardened by heat treatment or chemical treatment, and the surface is processed very precisely (1 angular ball bearing 10 is a tolerance area of interference fit, and the inner circular groove of the single binary structure has a circular coil spring (5) is inserted into the structure of the structure to secure the circular coil spring (5) to be maintained in the inside of the constant structure of the end always constant The wheel 12 in which the angular ball bearing 10 is fitted has a structure in which the ball of the angular ball bearing 10 is rotated by a predetermined angle so that the wheel 12 is coupled to the locomotive when the wheel 12 is pulled or retracted. When rotated on H-shaped steel structure rail 11, it maintains safe surface strength corresponding to frictional force and stress of load and has a channel groove structure of dish type, so that the structure is rotated on railway rail 11 and moves forward and backward. All of them were made to be rotated, and especially the channel structure wheels were structured to surround both sides of the railroad rail to prevent derailment from the railroad. The angular ball bearing 10 is composed of an outer ring, an inner ring, a retainer, and a ball. The outer ring and the inner ring are fixed to the outer surface of the hollow inner cylindrical boss 9 and the inside of the wheel 12, and the inner bearing ball is rotated by a predetermined angle. It is a structure that makes the tilde line cushion when the rail passes through the curved part by the rotational structure, and the angular ball bearing of the wheel rotates angularly so that each ball can be successively instantaneous point contact load. The structure and the action of reducing fatigue load are made of the material and the constituent structure that are calculated mechanically within the safety limits. The inner boss 9 of the hollow cylindrical structure and the annular shaft 8 of the inside are also processed in the required shape by using the same method and metal characteristics, and the technical principle worked also has a rectangular parallelepiped in the hollow cylindrical inner boss 9. The key (7) grooves of the symmetrical structure make the hollow cylindrical structure internal boss 9 secure to the annular shaft 8 and safety mechanics. The hollow cylindrical structure internal boss 9 is rotated. The rod-shaped shaft 8 and the cuboid buried key 7 of the rectangular parallelepiped become a forward and backward rail function structure so that the rod-shaped shaft 8 can be moved back and forth by the elastic force of the circular coil spring 5. It is always symmetrically on the outer surface and acts the same by the law of force and component force, so the same force acts as a check. The parallel spacing of the rail 11 is not maintained due to the natural environment or external force, so the rail 11, which is a metal, is deformed, so that the train is deformed in a state or part that is wide in summer or narrow in winter. Derailment safety accidents occurred frequently, and the circular coil spring 5 was automatically adjusted to the space between the rails 11 deformed by the sliding device and the structure by sliding the wheels 12 back and forth by the action of the elastic force. In addition, the gap between the rails 11 is also artificially increased or narrowed at the same time as the wheels 11 are artificially stretched or narrowed at the same time. It is located in the structure of the action to be safe operation. Going to the position of the normal rail 11 interval is the wheel structure and the device structure is to be returned to the center normally. Both ends of the round bar shaft 8 are stepped in a square cross-sectional structure, where they are fitted into the square through-holes of the lower cover 6 to prevent the round bar shaft 8 from rotating left and right. As the wheel 12 rotates, the internal assembly also has a mechanical action to fix the state to be rotated, and the external dichroic structure upper support 2-a is the lower surface of the carriage 1. It has a strength and a structure corresponding to the load at the bottom, and it is combined by a bowling (3-a) to have a fixed support action. In order to keep the coupling horizontally on the upper surface, the horizontal plate is made horizontal so that the distributed load is applied and the safety structure. The lower part has a structure in which the wheel 12 and the device are opened to facilitate the coupling, and the lower cover 6 is overlapped with the upper support 3-a and the bolt coupling portion before and after the coupling by the bolting 3 from the outside of the surface. This is the principle that the two components, the joining components, are joined by some method and tool, and the structure is designed to facilitate the handling of separation and joining. The principle of actuation is the action of force concentrating principle and action structure by the one-way torque where the thread is formed on the circumferential surface and the two objects are fastened so that the applied force is not released by the friction force. It became.

Figure 2 is the same as Figure 1 but everything else is a second type of structure (2-b) of the upper dishing support is a symmetrical structure in the left and right front and rear in FIG. The structure of the rear part is made of the overall structure of the lower functional structure and only the difference between the structure of the upper part of the upper structure, and the lower cover 6 is mounted in the same manner as in FIG.

Figure 3 is a structure combined with a front and back cover (6-a) and a dichroic structure (2-c) which is the entire external support of the third type, Figure 1 and the inside is combined with the same components and the front and rear components Only the structures of the cover 6-a and the dish-shaped support 2-c differ. The shape and structure of the dichroic support (2-c) are the same as the horizontal plate and the female screw structure of the upper surface, and the vertical plate part of the left and right rib function structure in the opening structure before and after, and the thickness of the female screw seat is symmetrically It has six structures, and the front and rear covers (6-a) have a symmetrical structure in which the protrusions are thick so that they can be placed and joined instead of the structure in which the bolt portion 3 overlaps. The cover (6-a) is mounted and engaged, and there is an annular shaft (8) with a circular coil spring (5), a hollow cylindrical cylindrical boss (9), a cuboid buried key (7), and an angular ball. The bearing 10 and the wheel 12 are coupled in the same manner as in FIG. 1 and fitted into the center of the outer upper support 2-c and the lower front and rear cover 6-a. The front and rear covers 6-a of the lower part have the same structure as that of FIG. 1, and the upper part has a semicircular shape, and the upper part has a circular groove to which the round bar shaft 8 is fitted. At the center, it is a rectangular through hole, and at the outside, it is a circular groove with a circular shape inside, and the circular coil spring 5 is inserted and combined. It protrudes to the side surface and becomes thick, and there are perforated holes of three female threads vertically, and by bolting there, the female screw seat and the front and rear of the outside of the front and rear of the upper support (2-c) The lower cover 6-a was placed on the upper dish-shaped support 2-c by the bowling 3 in the penetrated hole of the face cover 6-a, and was joined.

Fig. 4 shows the structure and shape of the rod-shaped long axis 8-a as a coupling component part and inside the hollow structure cylindrical inner boss 9 for construction using the long axis 8-a instead of the rod-shaped short axis 8. It is inserted and joined together, and it is a round bar-shaped structure that is symmetrically arranged on both sides of the round bar-shaped structure, and the outer surface is a symmetrical key (7) groove up and down symmetrically, and the buried key (7) of the rectangular parallelepiped is inserted and hollowed out. It is combined with the cylindrical inner boss (9). The cross-sections on both sides of the round bar-shaped long shaft 8-a have a square structure so that they can be fitted into the square through holes of the front and back covers 6 and 6-a.

FIG. 5 is a structure in which the rod-shaped short axis 8 as a coupling component is coupled by a hollow structure cylindrical inner boss 9 and a buried key 7 and is shaped at both ends of the rod-shaped shaft 8 of FIG. In the same way as the end structure, the surface is hardened by heat treatment, and the square key (7) grooves are made of the entire length side up and down on the outer surface. (6-a) was fitted in a square through hole at the center.

Fig. 6 is a hollow structure cylindrical inner boss 9, which is a coupling component, which is commonly used in all types, and has a cylindrical shape in which the inside is a circular through hole, and is vertically symmetrical on the length of the inner hole. Key (7) of the groove.

7 is a wheel 12, which has a cylindrical structure with a cylindrical structure and a channel structure with a circular and thin thickness having a large protrusion on both sides, and a surface with heat treatment on the surface, and a circular through hole inside. In the outer side, a circular groove has a circular structure, which is stepped from the outside to the inside so that the circular coil spring 5 can be fitted therein.

FIG. 8 is a partial coupling view of the structure in which the outer upper dishing support 2-a and the lower front and rear cover 6 of FIG. 1 are combined and joined by the bowling 3.

FIG. 9 is an outer upper dishing support 2-a of FIG. 1, which is a coupling component, shown in front view, top view, and right side view, and the structure and shape thereof are as described above in FIG.

FIG. 10 is a coupling component, which is the lower cover 6 of FIG. 1, having a front and rear symmetrical structure, and is shown in front view, top view, and right side view, and the structure and shape thereof are the same as described above with reference to FIG.

11 shows the case where the rod-shaped shaft 8 is used in the structure of FIGS. 1 and 3 in the structure of the two parallel wheels and the support which are mounted on the lower left and right carriage 1 by using the rod-shaped long shaft 8-a. Bottom cover structure 6-b. Only the part consisting of a circular hole penetrated in the center is different, and the rest is the same structure and shape as in FIG.

Fig. 12 is the same as the external dish support 2a of Fig. 1, but only the other one of the upper structure has the lower cover structure integrated into the entire cover on the rear part, and the front part is the upper structure, and the front part is the upper part. It is a second type of structure of the upper dishing type structure that can be combined with the dishing type support 2-b and the lower cover 6. The front lower cover has the same structure and shape as the lower cover of FIG. 1 and has been described above with reference to FIG. 1.

FIG. 13 is of the structure of the upper dishing type support 2-c of the third type of FIG. 3, and is a coupling component part, and the difference from the first type is that the front and rear portions have a left and right rib structure and the female screw seat on the front surface. The lower part is made of a difference in structure projecting forward and backward.

Fig. 14 is a front and back symmetric cover (6-a) of the outer support of the third type structure, which is combined with Fig. 12, and is a front and back cover as a structure and a shape, and is not integrated up and down, but is integrally formed and bolts on the left and right rib structures The left and right sides of the front and rear covers were vertically projected to the front and rear sides so as to be joined by the female thread structure, and the through holes of the female thread structure were formed. The semi-circular shape is projected downward and has the middle part horizontally, and the center of the back is a rectangular through hole, and the rectangular structure at the end of the inner annular shaft 8 is fitted to be combined. On the outside side, it is a circular rectangular groove, and the circular coil spring (5) is fitted, and the elastic force is applied back and forth before and after It has been able to structure and appearance been so.

FIG. 15 is a perspective view of FIG. 3 perspectively. FIG.

As a means of transportation in human life, we had to move as a method of running, walking, walking or using one body itself, which is a method of self-solution, and a characteristic that cannot be fixed in one place by using tools or means. Whether or not they have traveled by means of tools or means, the use of tools or means has developed into the ability to hike through wisdom and experience to the limitations of the body. As a way of using tools such as cows, dogs, dogs, etc. and gradually progressing from them, using wagons, rafts, and wagons, using nature and animals, and using more convenient tools at the same time, Along with more advanced civilization, coal, wood, and steam Through the early industrial era and the early scientific age of ships and trains, today, the use of transportation tools and tools using oil, gas, electricity, and nuclear power, planes, trains, oil and gas energy vessels, airplanes, vehicles, trains, etc. Has been developed. In this way, the development process is not stagnant but the development of civilization and the use of resources and tools are being developed together. The composition of the tools used is based on the reduction of energy, convenience, safety and economic purpose. By design and manufacturing, they were manufactured in many different kinds of complexities, and their cause was due to the competitive advantage in the capitalist system and the desire to enjoy better life. The invention was stimulated and the same invention is the invention of the wheel and the supporting part of the train or subway, which is one of the means of transportation. It was intended for. Specifically, the conventional train or subway wheel structure is the same as the conventional one, and the wheel housing is fitted in the horizontal axis, the wheel is fitted to the shaft, the bearing is fitted to the shaft and the bearing and the shaft is fixed so that the bearing housing is rotated by the bearing ball and It was built as a support to be fixed to the bottom surface of the passenger car, which was laid on the sleeper on the ground. The structure of the wheels fixed to the passenger car is on the deformed rails while the rail is fixed and the rail is deformed. Worn or depressed due to failure to rotate position It could be operated in the positional state, and the increase of consumption and the abnormal position of the wheel could lead to the risk of derailment safety accidents, and the personnel who repair, inspect and manage the rails always check the state of the rails and control the gap. The manpower and cost of a lot of efforts to perform the maintenance work normally and the dangerous work around the rail had to be done. In this regard, the present invention is a structure in which the wheel is conveyed back and forth by the spring device and the rail structure shaft, the devices mounted in the interior of the outer support is automatically moved to the position that meets the rail gap even if the gap is deformed before and after the wheel. It has been transported to make it possible to operate safely and the rail is to be returned to its normal position naturally by the operation even if the rail is not artificially checked and calibrated. This results in savings, safety and benefits from manpower and time-stamp hazards that check and correct the intervals, and the rail maintainer or manager only needs to check the fixed status. When exported, it is an invention that is beneficial to the national interests by acquiring foreign currency.

Claims (2)

As the wheel 12, it has a cylindrical structure, and a cylindrical channel structure on the outer cylindrical surface, and a hollow cylindrical through-hole is drilled inside, and the front and rear surfaces have a circular groove structure that is stepped from the outside to the inside. An angular ball bearing 10 is inserted into the coil spring 5 and a through hole in the center portion of which the bearing ball is rotated at an angle. A hollow cylindrical cylindrical boss 9 is fitted into the inner ring of the bearing. The penetrated cylindrical hole inside the boss has a square key (7) groove in two places, symmetrically up and down by the length of the cylindrical surface, and at the same time, the rod-shaped shaft (8) is fitted therein and the rod-shaped shaft (8) outer cylindrical surface length. Part of the rectangular key (7) grooves are also dug into the inner boss (9) and the rectangular key (7) grooves of the annular shaft (8) is fitted with a rectangular buried key (7) is fitted to join the round bar type At both ends of the shaft (8), a square-shaped structure is provided at the center of the shaft, and a short-length binary structure is provided. The structural cover 6 is symmetrical so that the lower cover 6 is superimposed on the outer front and rear surfaces of the upper support 2-a, and is joined by bolts 3 from the outside to the left and right sides of the lower structural cover 6. In the center, a rectangular through-hole structure formed at both ends of the round bar shaft 8 is fitted therein, and the entire coupling portion of the outer cover 6 and the inner wheel 12 is fixedly coupled to the lower cover ( 6) is a circular groove having a square perforated structure at the center, and has a coupling structure in which circular coil springs 5 fitted at the front and rear circular grooves of the wheel 12 are fitted at the same time. Wheels that are trains and subway train wheels with a structure that automatically slides back and forth by the ring, and the wheels are naturally adjusted and balanced to the front and back positions. (A) The structure of the lower cover 6 is symmetrical forward and backward, and the small width is vertically symmetrical on the left and right sides, and there is a penetrated circular hole of two female thread structures, the upper and lower sides, and the lower part of the middle part is slightly arcuate. The protrusion has a downward shape, the upper part has a semicircular shape, and the upper and lower arcs and the semicircular part have a horizontal upper and lower structure, and the outside is a semicircular upper structure and a small width vertically on the left and right sides. The part that is made up is projected to the outside which is slightly front than the entire outer surface, and the overall thickness is the same structure. The semicircle of the upper structure is a through hole with two female threaded seats, and the inside of the back is a semicircular groove. In the center is a square through hole, sliding back and forth Lower front and rear wheels are naturally cover of the wheel train and underground train wheel structure of which is adjusted and balanced by the forward and backward position. (B) Upper structure The support (2-a), which is an outer cover, has a cube-shaped structure, and the upper and lower parts of the front and rear surfaces are horizontally closed, except for the upper part, and the lower cover ( 6) It is made of a penetrating circular hole made of two female screws to be combined with the lower part. The lower part is opened and the left and right parts are symmetrically penetrated from the lower cover 6 and the outer surface to be combined with the upper and lower female threads. The inner surface is made of semi-circular groove, which is a circular coil spring (5) seat groove at the center, and on the upper surface, a plurality of perforated female threaded circular holes are arranged at regular intervals to combine the carriage (1) and the entire coupling structure. The left and right sides are sliding devices before and after the rib reinforcement is equal to the horizontal height of the front in the width direction A support that is the outer cover of the upper structure of the wheels, which are trains and subway train wheels, in which the wheels are naturally adjusted and balanced in the front and rear positions. The upper cover (2-c) according to claim 1, wherein the lower cover (6) is attached to the upper coupling (2-c) lower coupling part in the coupling of the outer upper and lower cover structures, and the upper cover (2-c) is a support of the upper structure dish type. ), The front and rear outer surface structures are symmetrically projected outwardly to the left and right sides, and the upper cover is a through hole of three female thread structures, and the lower cover (6-a) has a protruding square shape. The structure of the left and right sides of the lower structure in the seat is a thin-shaped rectangular structure is projected to the outside of the front and rear, and is mounted by the upper structure cover (2-c) and the bolt (3), the upper cover (2-c) ) The front and rear surfaces were opened and the lower surface was opened, and the upper and lower surfaces of the lower cover (6-a) were horizontal and arcuate in the middle, and a circular groove in the back and a square in the center. The upper and lower outer cover of the device before and after the sliding been in the through-groove in the structure in which the wheel is adjusted and balanced naturally in position before and after the train and underground train wheels wheel.