KR20180102909A - Transfer Apparatus for Ladle - Google Patents

Abstract

The present invention relates to a transfer apparatus for a container, comprising: a bogie formed to have a container secured on one surface thereof; and a separation preventing device protruding from one surface of the bogie so as to prevent separation of the container secured on one surface of the bogie, wherein the separation preventing device is stretched in the vertical direction by being in contact with the container, and is formed to be received in the bogie. When the container is displaced from a right location and is lowered to be partially overlapped with the separation preventing device, the container can be stably secured in the bogie.

Description

[0001] Transfer Apparatus for Ladle [

The present invention relates to a container transporting apparatus, and more particularly, to a container transporting apparatus capable of stably mounting the container on a carriage even if the container moves down from a proper position.

In various industrial sites, a crane is installed as a device for transporting heavy objects to a desired position. Steel mills are equipped with molten steel cranes, for example, as a device for propelling ladles containing molten steel into a cadastral car or hoisting it from a cadastral cargo.

On the other hand, the trolley has a pair of latching jaws for preventing the latches from being separated from each other, and the ladle is seated on the ladle carriage so as to be positioned between the pair of latching jaws. When the ladle moves away from the reference point on the ladle by the erroneous operation, the ladle collides with the latching jaw and tilts, or the ladle falls out of the ladle and flows out of the ladle.

Techniques that constitute the background of the present invention are disclosed in the following patent documents.

KR 10-2005-0015313 A KR 10-2011-0110540 A KR 10-2015-0111224 A

The present invention provides a container transporting apparatus capable of stably mounting the container on a truck even if the container bound to the crane moves down from the fixed position and descends.

A container transfer apparatus according to an embodiment of the present invention comprises: a cart which is formed so that a container can be seated on one surface; And a separation preventing device at least partially protruding from a surface of the carriage so as to prevent separation of the container placed on one side of the carriage, wherein the separation preventing device is configured to expand and contract in the vertical direction by contact with the container And is formed so as to be accommodated in the inside of the truck.

The escape prevention devices are respectively installed at a plurality of positions spaced apart from each other around a reference point for placing the container in place, and the width between the escape prevention devices may coincide with the outer diameter of the container within a tolerance .

Each of the escape prevention devices may include at least one or more engagement protrusions protruding from one side of the carriage so as to face the side of the container and being elastically supported in the vertical direction to and from the inside of the carriage.

Wherein the escape prevention device comprises: an elastic member installed in a vertical direction inside the carriage; And an engaging jaw supported on an upper surface of the elastic member, wherein the engaging jaw protrudes upward from one surface of the carriage.

The escape prevention device includes a plurality of elastic members provided in an up-and-down direction in an installation groove recessed on one surface of the carriage; And a retaining jaw supported on an upper surface of each elastic member, wherein each of the retaining jaws protrudes upward from one surface of the carriage.

Wherein the escape prevention device comprises a plurality of elastic members spaced apart from each other in the radial direction of the container in a mounting recess formed concavely on one surface of the carriage, An engaging jaw supported on an upper surface of each elastic member; And a connecting member which is connected to the plurality of elastic members or the plurality of engaging jaws and is mounted inside the mounting groove so that one elastic member and the other elastic member of each elastic member alternately expand and contract.

The connecting member includes: a supporting member mounted on an upper surface of each elastic member; A rope connecting between the respective support members so that tension is applied; And a sheave which is installed inside the bogie so as to be pulled downward by hooking the rope on an outer circumferential surface between the elastic members, and each engaging jaw can be supported on the upper surface of each support member.

Wherein the sheave is provided at a height lower than the height of the upper surface of the elastic member when the elastic member is retracted so that the latching jaw is received in the bogie, and the rope is supported by at least one of the elastic members Lt; RTI ID = 0.0 > shrinkage < / RTI >

The weight of each of the engaging jaws may be different so that any one of the engaging jaws close to the reference point for seating the container in the correct position can protrude upward from one side of the bogie.

The elastic modulus of each of the elastic members may be differently set so that any one of the engaging jaws close to the reference point for seating the container in the correct position may protrude upward from one side of the bogie.

According to the embodiment of the present invention, even if the container bound to the crane deviates from the fixed position and descends, it can be stably mounted on the bogie. For example, when the ladle is applied to a ladle of a steelworks, the ladle moves away from the reference point on the ladle by the mistake of the equipment or the erroneous operation of the operator while the ladle is being pulled by the molten steel crane, So that collision with the ladle can be prevented by being inserted into the inside of the ladle. Further, the other latching jaw housed in the inside of the ladle can be raised from the outside of the latching jaw inserted into the inside of the ladle by contact with the ladle, thereby supporting the ladle side. Thus, the lugs can be stably stuck on the lading bus and can be prevented from being separated.

1 is a schematic view of a container transfer apparatus according to an embodiment of the present invention.
2 and 3 are schematic views of a breakaway prevention device according to an embodiment of the present invention.
4 to 6 are operation diagrams of a container transporting apparatus according to an embodiment of the present invention.
7 is an operational view of a container transporting apparatus according to a comparative example of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS The drawings may be exaggerated for purposes of describing embodiments of the present invention, wherein like reference numerals refer to like elements throughout.

1 is a schematic view of a container transfer apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic views of a breakaway prevention apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view showing an initial installation state of the escape prevention device, and FIG. 3 is a schematic view showing an operation state of the escape prevention device when the inner escape jaw of the escape prevention device contacts the container.

4 to 6 are operation diagrams of a container transportation device according to an embodiment of the present invention. Fig. 4 is an operational view when the container is seated so as to be aligned with the reference point on the bogie, and Figs. 5 and 6 are operation diagrams when the container is seated and separated from the reference point on the bogie. Referring to Figs. 1 to 6, a container transportation device according to an embodiment of the present invention includes a container 100 and a escape prevention device 200 for transporting the container 10.

The container 10 may be formed to have various shapes such as a cylindrical shape, a hexahedron, or a polyhedron. The container 10 may have an inner space in which a processed material such as molten steel is received, and an opening communicating with the inner space may be formed through the upper surface. The refractory is built in the inside of the vessel 10, so that the internal space can be protected from the high temperature of the processed material. For example, the vessel 10 may include ladders used to transport molten steel at a steelworks. Of course, the container 10 may include various containers used in the transport of various treatments in various industries besides the ladle. The container 10 may be bound (or attached) to a ceiling crane (not shown), for example, to be transported to the upper side of the carriage 100, and then lowered to be seated on the carriage 100.

The bogie 100 may include bogies that are used to transport ladders containing molten steel, for example, at a steelworks, as bogies that carry the vessel 10. The carriage 100 can be formed so that the container 100 can be mounted on one surface 110, and the other configurations and methods are not particularly limited. For example, the bogie 100 may be a configuration and a system capable of traveling along a predetermined path in a state in which the container 10 containing the treatment product is seated on the one surface 110. The bogie 100 may include a body formed to a size at which the container 10 is seated and a running portion for supporting the vehicle body in a traveling manner. May be formed.

The bogie 100 is provided with a separation preventing device 200 on one surface 110 of the bogie 100 to guide the seating of the container 10 while preventing the container 10 seated in the center of the surface 110 from being separated. A separation preventing device 200 is installed in an installation groove 111 recessed at a plurality of positions surrounding a central portion of one side 110 of the carriage 100 so as to protrude from one side 110 of the carriage 100 It is possible to guide the seating of the container 10 facing the side surface of the mounted container 10 and to prevent the container 10 from coming off.

The escape prevention device 200 may be installed at least partly protruded or exposed on one side 110 of the carriage 100 to prevent separation of the container 10 seated on one side 110 of the carriage 100 And can be accommodated in the interior of the carriage 100, for example, in the installation groove 111, by being extended or retracted in the vertical direction h by contact with the container 10.

The escape prevention device 200 may be installed at a plurality of positions spaced apart from each other around a reference point on one surface 110 for seating the container 10 in a predetermined position. And may be installed on one side 110 of the carriage 100 in pairs. Here, the reference point may be a reference point formed on one surface 110 by a central axis C passing one side 110 of the carriage 100 in the up and down direction h, for example, . In addition, the center of the vessel 10 to the reference point (C ₁₀₎ is when the vessel 10 so as to be aligned in the vertical direction (h) mounted on one surface 110 of the track 100, for example as shown in Figure 4, the container The position where the container 10 is seated is referred to as a straightener 10 at the central portion of the one side 110 so as to be located inside the escape prevention devices 200.

On the other hand, the width w between the escape prevention devices 200 spaced apart from each other with the reference point interposed therebetween corresponds to the outer diameter of the container 10. For example, the width w between the escape prevention devices 200 spaced from each other with the reference point interposed therebetween may coincide with the outer diameter of the container 10 within a tolerance. The tolerance means that the escape prevention device 200 is mounted on one side 110 of the carriage 100 while satisfying that it is possible to prevent the separation of the container 10 which is seated on one side 110 of the carriage 100. [ Quot; means a gap that is allowed to be spaced apart from the side of the container 10 that has been removed.

That is, the escape prevention device 200 is installed at a position that can be spaced apart from the side surface of the container 10, which is seated on one surface 110 of the carriage 100, with a predetermined clearance within a tolerance.

Each of the escape prevention devices 200 is installed on one surface 110 of the carriage 100 so as to face the side surface of the container 10 placed on one side 110 of the carriage 100, And a latching jaw 250 for entering and exiting the inside of the carriage 100. At this time, the latching jaw 250 may have a block shape, and may have a size enough to prevent the container 10, which is seated on one surface 110 of the carriage 100, from separating in the radial direction r .

The catching jaw 250 can prevent the container 10 from deviating in the radial direction r while facing the side surface of the container 10 when the container 10 is seated in the correct position. When the container 10 is seated and detached from the proper position, the latching jaw 250 is brought into contact with the lower surface of the container ₁₀ so that the elastic member 210 is moved up and down by the load W ₁₀ of the container 10 h), as shown in Fig. That is, even if the container 10 is seated so as to be overlapped with the latching jaw 250, the latching jaw 250 which overlaps the container 10 is accommodated inside the carriage 100, 100 of the container 10, so that the container 10 can be prevented from tilting or coming off.

Each of the escape prevention devices 200 may further include an elastic member 210 to elastically support the latching jaw 250 in the vertical direction h. The elastic member 210 may include a coil spring having various shapes such as a cylindrical shape, a cylindrical shape, and a tapered shape. The elastic member 210 can be installed in the mounting groove 111 of the carriage 100 in the vertical direction h so as to elastically support the catching jaw 250, And may be supported on the upper surface of the elastic member 210 so as to protrude upward from the one surface 110.

The elastic member 210 elastically supports the stopping jaw 250 in addition to the coil spring so that the stopping jaw 250 protrudes upward from the one side 110 of the carriage 100 and the mounting groove 250 of the carriage 100 111), various mechanical elements, supporting means, and the like, which can be stretched and contracted in the vertical direction (h), may be included.

The escape prevention device 200 may have a variety of arrangements of the latching jaws 250 and a variety of ways of operating the elastic member 210. First, the escape prevention device 200 having one latching jaw 250 will be described below.

The escape prevention device 200 having one stopping jaw 250 includes an elastic member 210 installed in the installation groove 111 of the carriage 100 in the vertical direction h, And may include an engagement protrusion 250 projecting upward from one surface 110 of the carriage 100.

Elastic member 210 engaging shoulder 250, a container 10, a load (W _10), the receiving state, the pawls 250, the top surface is positioned on one side 110 and the same surface of the track 100 or the balance of the Can be contracted by a predetermined displacement? X so as to be positioned at a lower level than one surface 110 of the substrate 100.

The elastic member 210 may be formed so that the upper surface of the engaging jaw 250 protrudes to a predetermined height above the upper surface 110 of the carriage 100 in a state in which the engaging jaw 250 is not in contact with the container 10. [ It can be restored elastically.

The escape prevention device 200 having the above-described structure can be used in the escape prevention device 200 shown in Figs. 2 and 3, for example, the outer elastic member 212, the support member 220, the rope 230, the sheave 240, And an inner side elastic member 211 and an inner side latching jaw 251 except for the structure of the outer side latching jaw 252 and the outer side latching jaw 252. [

Each of the engagement protrusions 250 has a plurality of engagement protrusions 250 spaced apart from each other in the radial direction r of the container 10 about the reference point on one side 110 of the carriage 100, Is operated independently by the respective elastic members 210 will be described.

The escape prevention device 200 having a plurality of locking protrusions 250 and a plurality of elastic members 210 supporting each of the plurality of locking protrusions 250 independently operates includes an installation groove 111 formed on one surface 110 of the carriage 100, A plurality of elastic members 210 provided inside the elastic member 210 and spaced apart in the radial direction r of the container 10 from each other in the vertical direction h; Each of the engaging protrusions 250 and the elastic members 210 may be installed adjacent to each other in the installation groove 111. The engaging protrusions 250 may protrude upward from the one surface 110, It is possible.

When each of the engaging jaws 250 is installed in the interior of the mounting groove 111 and spaced apart in the radial direction r of the container about the reference point on one side 110, (251), and the engaging jaw relatively far from the reference point is referred to as an outer engaging jaw (252). The elastic member for elastically supporting the inner engaging jaw 251 is referred to as an inner elastic member 211 and the elastic member for elastically supporting the outer engaging jaw 252 is referred to as an outer elastic member 212. [

Each of the elastic members 210 has an upper surface of the engaging jaw 250 engaged with one surface of the carriage 100 in a state in which the retaining jaws 250 supported on the respective elastic members 210 receive the load W ₁₀ while being in contact with the container 10 110 or each of them can be independently contracted by a predetermined displacement? X so as to be located at a lower level than one surface 110 of the carriage 100.

Each of the elastic members 210 has an upper surface of the engaging jaw 250 on the upper side of one side 110 of the carriage 100 in a state in which the retaining jaws 250 supported on the respective elastic members 210 are not in contact with the container 10 And each of them can be elastically restored independently so as to be protruded to a predetermined height.

In this structure, when the container 10 is displaced from the fixed position and is seated so as to overlap the inner engaging jaw 251, the inner engaging jaw 251 is accommodated inside the carriage 100, The container 10 can be prevented from tilting or coming off while the outer jaw 252 faces the side surface of the container 10, It is possible to prevent deviation in the direction r.

Of course, when the container 10 is seated so as to overlap both the inner engaging jaw 251 and the outer engaging jaw 252, the inner engaging jaw 251 and the outer engaging jaw 252 are housed together inside the carriage 100 The container 10 is horizontally seated on one side 110 of the carriage 100 to prevent the container 10 from tilting or coming off.

The escape prevention device 200 of the above-described structure may have an inner elasticity (not shown), except for the structure of the support member 220, the rope 230 and the sheave 240, which will be described later in the escape prevention device 200 shown in Figs. 2 and 3, And an escape preventing device 200 having a structure composed of a member 211, an outer elastic member 212, an inner engaging jaw 251, and an outer engaging jaw 252.

Each of the engagement protrusions 250 has a plurality of engagement protrusions 250 spaced apart from each other in the radial direction r of the container 10 about the reference point on one side 110 of the carriage 100, The elastic members 210 supporting the elastic members 210 are mutually dependent and operate to interlock with each other.

The escape prevention device 200 having a plurality of elastic members 210 supporting and supporting a plurality of the latching jaws 250 and the plurality of latching jaws 250 is mounted on one surface 110 of the carriage 100 A plurality of elastic members 210 arranged in the vertical direction h and spaced apart from each other in the radial direction r of the container 10 in the concave formed installation groove 111; A plurality of elastic members 210 are connected to each other so that the one elastic member and the other elastic member of the elastic members 210 alternately expand and contract, And a connection member that is mounted inside the installation groove 111 by connecting the connection member.

The connecting member includes a supporting member 220 mounted on the upper surface of the elastic member 210, a rope 230 connecting between the supporting members 220 so that tension is applied thereto, And a sheave 240 installed inside the installation groove 111 of the carriage 100 so as to be pulled downward from the outer surface of the support member 220 by the rope 230. In addition, The engaging jaw 250 can be supported.

At this time, the one latching jaw 251, which is relatively close to the reference point of each of the latching jaws located inside the one installation groove 111, is referred to as an inner latching jaw 251, One elastic member for elastically supporting the inner engaging jaw 251 is referred to as an inner elastic member 211 and the other elastic member for elastically supporting the outer engaging jaw 252 is referred to as an outer elastic member 252. [ (212). A support member mounted on the upper surface of the inner elastic member 211 to support the inner engagement protrusions 211 is referred to as an inner support member 221 and an outer engagement member 212 mounted on the upper surface of the outer elastic member 212 Is referred to as an outer support member 222. [

The sheave 240 is installed at a height lower than the height of the upper surface of the elastic member 210 when the elastic member 210 contracts so that the latching jaw 250 is received in the mounting groove 111 of the carriage 100 .

The rope 230, such as a wire rope, may have a length that allows at least one of the elastic members 210 to be retracted by the rope 230. Alternatively, the rope 230 may be configured such that when one of the latching jaws 250 is housed in the installation groove 111 of the carriage 100 and the other one protrudes upward from one side 110 of the carriage 100 And may have a length that allows connection between the respective support members 220 so that tension is applied to the rope 230. For example, the elastic members 210 are interlocked by the rope 230 and the sheave 240, and at least one of them can remain contracted.

The weight of the inner locking step (251) so that the inner locking step (251) closer to the reference point for mounting the container 10 in position to be protruded upwardly from the surface 110 of the balance (100) (W ₁₎ and the weight (W ₂₎ of the outer locking step (252) may be formed differently from each other, or, a modulus of elasticity of the inner elastic member 211, the elastic modulus and the outer elastic member 212 may be formed of different from each other. In other words, the modulus of elasticity of the outer locking step 252, the weight (W _2), an inner locking step 251, the weight (W ₁₎ to each be formed different from the weight, an inner elastic member (211) so that heavier than that of the outer The elastic modulus of elastic member 212 may be different from that of elastic member 212. [ Therefore, the inner engaging jaw 251 and the outer engaging jaw 252 can be alternately projected upward from the one surface 110 of the carriage 100 depending on whether the inner engaging jaw 251 and the container 10 are in contact with each other And can be accommodated in the installation groove 111 of the carriage 100.

2 and 4, since the elastic coefficient of the inner elastic member 210 is larger or the load of the outer latching jaw 252 is larger, The inner elastic member 211 is elastically restored by a length sufficient to allow the upper surface of the inner engaging jaw 251 to protrude to the upper side of the upper surface 110 of the carriage 100 by a predetermined height . The outer elastic member 212 is pulled downward by the rope 230 so that the upper surface of the outer engagement jaw 252 is positioned on the same plane as the surface 110 of the carriage 100, And is contracted by a predetermined displacement? X so as to be positioned at a height lower than the one surface 110. [

3 and 5 to 6, the inner elastic member 211 is configured such that the inner engagement protrusion 251 supported by the inner elastic member 211 is brought into contact with the container 10 so that the load W ₁₀ of the container 10 The upper surface of the inner catching jaw 251 is positioned on the same plane as the one surface 110 of the carriage 100 or at a predetermined displacement X such that the upper surface of the inner catching jaw 251 is positioned at a lower level than the one surface 110 of the carriage 100 Can be contracted.

At this time, the outer elastic member 212 is in contact with the tension caused by the rope 230 (for example, the displacement of the elastic modulus of one of the elastic members 210 by ΔX ) Is removed or eliminated, it can be stretched upward or elastically restored to the upper side. Therefore, the outer stopping jaw 252 can protrude upward from one side 110 of the carriage 100. [

Each of the plurality of escape prevention devices 200 according to the embodiments of the present invention formed as described above may be provided with a structure symmetrical with respect to a reference point for seating the container 10 in a predetermined position.

The latching jaw 250 according to the embodiments of the present invention may have a sloped surface 260 formed on one side of the upper surface thereof. The chamfered surface 260, for example, the chamfered surface may be formed to be inclined at an edge close to the reference point among the corners of the upper surface of the jaw 250, for example. The inclined surface 260 serves to prevent abutment jaws 250 of the inclined surface from contacting the container 10 in a wide area when the container 10 contacts the engaging jaw 250 and to prevent the corners from being worn.

Hereinafter, the operation of the container transporting apparatus according to the embodiment of the present invention will be described with reference to FIGS. 4 to 6. FIG. When the carriage 100 travels along a predetermined path and then stops at a predetermined position, the container 10 is bound to the hook of a ceiling crane (not shown) and transported to the upper side of the carriage 100. Thereafter, the container 10 is lowered while the hook is depressed, so that the center C ₁₀ of the container 10 can be lowered so as to be aligned with the reference point in the vertical direction h.

In this case, as shown in FIG. 4, the container 10 is seated in the central portion of the one side 110 so as to be located inside the escape prevention devices 200, and the position where the container 10 is seated is referred to as a straight edge.

On the other hand, Fig. 5 and the like, the center (C ₁₀₎ is not the reference point is not aligned in the vertical direction (h), the predetermined distance (d1) leaving one side of the container 10 to the container 10 is lowered as shown in Figure 6 Or can be lowered away from the other side by a predetermined distance d2.

5 and 6, the container 10 is seated in any one or at least one inner catching jaw 251, and the inner catching jaw 251 on which the container 10 is seated is positioned at the bottom of the container The container 10 is mounted horizontally on one side 110 of the carriage 100 to prevent the container 10 from tilting or coming off.

At this time, the outer engaging jaw 252, which is paired with the inner engaging jaw 251 stored in the bogie 100, protrudes outward from the carriage 100, It is possible to prevent the container 10 from deviating in the radial direction r.

7 is an operational view of a container transporting apparatus according to a comparative example of the present invention. Referring to FIG. 7, the container transport apparatus of the comparative example has a structure in which the carriage 100 is provided with the fixed catching jaws 300. In this structure, when the center C ₁₀ of the container 10 descends so as to be offset from the reference point, The container 10 is caught by the fixed stopping jaw 300 and tilted or separated as shown in Fig.

On the other hand, the container transport device according to an embodiment of the present invention, the center (C ₁₀₎ and separated from the reference point, even if mounted on the balance 100 engaging shoulder 250 is as selective smoothly accommodated in the vessel 10 of the container 10 It is possible to prevent inclination or dropout of the antenna. Meanwhile, the container transfer device according to the embodiment of the present invention can smoothly guide the escape prevention device 200 to the seating of each container 10 and prevent the escape prevention device 200 from escaping even when the outer diameter of the container 10 is different.

The above-described embodiments of the present invention are for the explanation of the present invention and are not intended to limit the present invention. It should be noted that the configurations and the methods disclosed in the above embodiments of the present invention may be modified into various forms by combining or intersecting with each other, and such modifications may be considered within the scope of the present invention. That is, the present invention may be embodied in various forms within the scope of the claims and equivalents thereof, and it is possible for the technician skilled in the art to make various embodiments within the scope of the technical idea of the present invention. .

100: truck 200: escape prevention device
210: elastic member 230: rope
240: Sheve 250: Jaw

Claims (10)

A bogie formed so that the container can be seated on one surface thereof; And
And a breaker protector installed at least partially on one surface of the bogie so as to prevent the container seated on one surface of the bogie,
Wherein the escape prevention device is formed so as to be retractable in a vertical direction by contact with the container and to be accommodated in the inside of the carriage. The method according to claim 1,
Wherein the escape prevention device is installed at a plurality of positions spaced apart from each other around a reference point for seating the container in a predetermined position,
Wherein a width between the spaced apart escape prevention devices corresponds to an outer diameter of the container within an allowable tolerance. The method of claim 2,
Each of the escape prevention devices comprises at least one or more than one engaging jaws protruding from one surface of the carriage so as to face the side of the container and elastically supported in the vertical direction to and from the inside of the carriage. The method according to claim 1,
The break-
An elastic member installed inside the bogie in a vertical direction; And
And an engaging jaw supported on an upper surface of the elastic member,
Wherein the engaging jaw protrudes upward from one surface of the carriage. The method according to claim 1,
The break-
A plurality of elastic members provided respectively in the up-and-down direction in the mounting recesses formed in the one surface of the carriage; And
And a retaining jaw supported on an upper surface of each elastic member,
And each of the engaging jaws protrudes upward from one surface of the carriage. The method according to claim 1,
The break-
A plurality of elastic members spaced apart from each other in the radial direction of the container and installed vertically in the installation groove formed concavely on one surface of the bogie;
An engaging jaw supported on an upper surface of each elastic member; And
And a connecting member which is connected to the plurality of elastic members or the plurality of engaging jaws and is mounted inside the mounting groove so that one elastic member and the other elastic member of each elastic member alternately expand and contract. The method of claim 6,
The connecting member includes:
A support member mounted on an upper surface of each elastic member;
A rope connecting between the respective support members so that tension is applied; And
And a sheave installed inside the bogie so as to be pulled downward by hooking the rope on an outer circumferential surface between the elastic members,
And each of the engagement protrusions is supported on the upper surface of each of the support members. The method of claim 7,
Wherein the sheave is provided at a height lower than the height of the upper surface of the elastic member when the elastic member is retracted so that the latching jaw is housed in the carriage,
Wherein the rope has a length such that at least one of the elastic members can be retracted by the rope. The method of claim 8,
Wherein the weight of each of the engaging jaws is different so that any one of the engaging jaws close to the reference point for seating the container in the correct position can protrude upward from one side of the bogie. The method of claim 8,
Wherein the elastic modulus of each of the elastic members is different so that any one of the engaging jaws close to the reference point for seating the container in the correct position can protrude upward from one surface of the carriage.

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