JP2022184427A - Dolly conveyance assisting vehicle - Google Patents

Abstract

To easily hold two dollies in a parallel conveyance state and easily release the dollies held in the parallel conveyance state therefrom at the time of assisting parallel conveyance of the two dollies.SOLUTION: In a second bar 20 present in a region where two dollies are held, two guides 40 each including a contact portion 41 disposed in parallel with the second bar 20 at a position separated from the second bar 20 by a distance D1 are provided at an end portion at a first bar 10 side, and two guides 50 each including a contact portion 51 separated from the second bar 20 by a distance L1 and disposed in parallel with the second bar 20 are attached to an end portion on the opposite side of the first bar 10.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage assisting vehicle for assisting parallel transportation of two carriages.

Conventionally, in retail stores such as supermarkets, distribution centers, and factories, trolleys with metal pipes erected on a bottom plate have been used to transport and store products, articles, and parts. . Such a carriage has a rectangular bottom plate, each of which is attached with a swivel wheel whose direction can be changed at each of the four corners of the bottom plate. A six-wheeled truck is generally used, which has a large width and fixed wheels whose orientation is fixed with the longitudinal direction of the bottom plate as the traveling direction. In recent years, it has been considered to increase the efficiency by arranging two carts in parallel and conveying them.

What is disclosed in Patent Document 1 is that a plurality of couplings that can be engaged with a carriage are movably provided on a rail member, and each of the plurality of couplings is engaged with a carriage that conveys in parallel, thereby forming two rails. Carriages are arranged in parallel and conveyed.

Japanese Patent Application Laid-Open No. 2020-40510

By the way, it is difficult to move the trolley especially when the total weight of the loaded articles is large. In particular, as described above, it has a rectangular bottom plate, and at each of the four corners of the bottom plate, a swivel wheel whose direction is variable is attached, and a diameter larger than that of the swivel wheel is attached to approximately the center of the long side of the bottom plate. In a six-wheeled truck with a large base plate and a fixed wheel whose orientation is unchanged with the longitudinal direction of the bottom plate as the traveling direction, the fixed wheel is always grounded, and the free wheel is grounded or not grounded to change direction. Therefore, when the direction is changed, the corner of the bottom plate is swung outward with respect to the fixed ring.

As a result, it becomes difficult to hold the two trucks in a state of parallel transportation or to remove the trucks from the held state. An accident may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art as described above. To provide a trolley transfer auxiliary vehicle capable of easily removing a trolley from a held state.

In order to achieve the above object, the present invention
It has a rectangular bottom plate, and at each of the four corners of the bottom plate, a swivel ring whose orientation is variable is attached, and is oriented substantially in the center of the long side of the bottom plate with the longitudinal direction of the bottom plate as the traveling direction. A trolley-transporting auxiliary vehicle that is attached with a fixed wheel that does not change, holds two trolleys that are transported in a state where the fixed wheel is always grounded, and assists the parallel transport of the two trolleys,
a first bar configured to be attachable to a moving vehicle for transporting the carriage, and with which one of the short sides of the bottom plate is in contact with the two carriages in parallel;
a second bar having one end connected to the central portion of the first bar, extending from the connecting portion in the direction opposite to the vehicle by at least the length of the long side of the bottom plate, and having wheels attached to its lower surface; ,
2, provided at or near the connection portion and parallel to the second bar at a position separated by a first distance in the direction in which the first bar extends from the second bar; two first guides;
The second bar is attached to the first guide on the side opposite to the connecting portion with a predetermined distance from the first guide, and the first bar is separated from the second bar. two second guides each having an abutting portion parallel to the second bar at positions separated by the first distance in the extending direction;
Attached to the first bar, the first guide abuts at a position separated from the abutment portion of the first guide by the length of the short side of the bottom plate in a direction away from the second bar. two third guides each having an abutting portion parallel to the second bar facing the portion;
The abutment portions of the first, second and third guides and the first bar abut against the bottom plate of the truck to hold the two trucks.

In the present invention configured as described above, the bottom plates of the two trucks are in contact with the abutting portions of the first, second and third guides and the first bar, respectively. It is held by the auxiliary carrier vehicle, and the parallel transportation of the two trucks is assisted by the auxiliary vehicle carrier vehicle. Commodities and articles mounted on carriages arranged in parallel do not collide with each other when the carriages are held in a state of being conveyed in parallel or when the carriages are removed from the holding state. In addition, at or near the connecting portion between the first bar and the second bar, the second bar is parallel to the second bar at a position separated by the first distance in the direction in which the first bar extends from the second bar. Two first guides each having an abutment are provided, and the second bar is spaced apart from the first guide on the opposite side of the first bar from the connecting part. Two second guides are mounted at a distance from the second bar and each having an abutment parallel to the second bar at a first distance, thus conveying two carriages side by side. When the truck is held in place or when the truck is released from the held state, the holding area of the truck surrounded by the contact portions of the first, second and third guides and the first bar Between the first guide and the second guide, the corner of the bottom plate can be swung toward the second bar with the direction change of the truck by a first distance, thereby forming two trucks. can be easily held in a state in which they are conveyed in parallel, and the carriage can be easily removed from the held state.

Also, if the second guide is attached at a position where the bottom plate of the truck does not come into contact with the first guide when the fixed wheel of the truck is aligned with the second guide in the direction in which the first bar extends. , a first distance between the first guide and the second guide with respect to the substantially central portion of the bottom plate in the longitudinal direction, which is difficult to shift in the width direction of the bottom plate by attaching the fixed ring, As the direction of the truck is changed, the corner of the bottom plate can be swung toward the second bar, so that the two trucks can be more easily held in a state of being transported in parallel, and the truck can be moved from the held state. It can be released more easily.

In addition, the end of the contact portion of the first guide on the side opposite to the first bar of the first guide is inclined with respect to the direction in which the first and second bars extend. If the bottom plate is connected to the second bar, when holding the two carts in a state of parallel transport, the corner of the bottom plate slides on the side surface of the second bar and on the inclined surface of the first bar. can be guided to the abutting portion of the guide.

Further, the distance from the first bar of the contact portion of the third guide to the end opposite to the first bar is the distance from the first bar of the contact portion of the first guide to the first bar. If the distance is longer than the distance to the end on the opposite side, the bottom plate is likely to enter between the first guide and the third guide.

Also, if the wheels are attached to the lower surface near both ends of the first bar, the first bar is prevented from tilting.

According to the present invention, the second bar is present between the areas where the two trucks are held, and the second bar is located at or near the connection between the first and second bars. Two first guides each having an abutment parallel to the second bar are provided at a first distance from the bar of the second bar, and the first guide of the second bar On the side opposite the connecting part, two second guides each comprising an abutment parallel to the second bar at a predetermined distance from the first guide and at a first distance from the second bar. Since two guides are attached, when two carts are held in a state of being conveyed in parallel, or when the carts are released from a state in which they are held, the products and articles mounted on the carts arranged in parallel will not be separated from each other. The first guide and the second guide against the holding area of the truck bounded by the abutments of the first, second and third guides and the first bar without being hit. , the corner of the bottom plate can be swung toward the second bar by the first distance along with the direction change of the carriage, thereby facilitating the state of transporting the two carriages in parallel. In addition, the carriage can be easily removed from the held state.

Also, the second guide is mounted at a position where the bottom plate of the truck does not contact the first guide when the fixed wheels of the truck are aligned with the second guide in the direction in which the first bar extends. , a first distance is provided between the first guide and the second guide with respect to the substantially central portion in the longitudinal direction of the bottom plate, which is less likely to slip in the lateral direction of the bottom plate due to the attachment of the fixed ring. Only, the corner of the bottom plate can be swung toward the second bar as the direction of the carriage is changed, so that the two carriages can be more easily held in a state of being transported in parallel, and from the held state. The truck can be released more easily.

In addition, the end of the contact portion of the first guide on the side opposite to the first bar of the first guide is inclined with respect to the direction in which the first and second bars extend. In the case of the one connected to the second bar, when holding the two carts in a state of parallel transport, the corner of the bottom plate slides on the side surface of the second bar and on this inclined surface. It can be guided to the contact portion of the first guide.

Further, the distance from the first bar of the contact portion of the third guide to the end opposite to the first bar is the distance from the first bar of the contact portion of the first guide to the first bar. If the distance to the end on the opposite side is longer, the bottom plate can be made easier to enter between the first guide and the third guide.

In addition, in the case where wheels are attached to the lower surface near both ends of the first bar, it is possible to prevent the first bar from tilting.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one embodiment of the trolley conveyance auxiliary vehicle of this invention, (a) is the figure seen from upper direction, (b) is the figure seen from the side. It is the figure which looked at the trolley conveyance auxiliary vehicle shown in FIG. 1 from the moving direction, (a) is the figure seen from the 1st bar side, (b) is the figure seen from the other side. It is a diagram showing an example of a trolley transported using the trolley transport auxiliary vehicle shown in FIG. 1, (a) is a view from one side, (b) is a view from another side, c) is a view from above. FIG. 3 is a diagram showing a state in which the six-wheeled truck shown in FIG. 3 is held by the truck transportation auxiliary vehicle shown in FIGS. It is a diagram. FIG. 4 is a diagram for explaining the action when the 6-wheeled trolley shown in FIG. 3 is held by the trolley carrier auxiliary vehicle shown in FIGS. 1 and 2 ; FIG. 6 is a diagram for explaining the action when the six-wheeled trolley held by the trolley transport auxiliary vehicle as shown in FIG. 5 is released; It is a figure which shows one embodiment of the connection bar which connects the trolley conveyance auxiliary vehicle shown in FIG.1 and FIG.2, (a) is a top view, (b) is the figure seen from the side. FIG. 8 is a diagram showing a state in which the trolley assisting vehicles shown in FIGS. 1 and 2 are connected in series using the connection bar shown in FIG. 7 ; FIG. 8 is a diagram for explaining the effect of the length from the connecting groove to the connecting hole of the connecting bar shown in FIG. 7 being equal to or longer than the length of the short side of the bottom plate of the six-wheeled truck shown in FIG. 3 ; .

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1A and 1B are diagrams showing an embodiment of a carriage-assisting vehicle according to the present invention, in which FIG. 1A is a top view and FIG. 1B is a side view. 2A and 2B are views of the carriage assisting vehicle 1 shown in FIG. 1 as viewed from the moving direction, in which FIG. is. 2, illustration of the connecting device 30 shown in FIG. 1 is omitted.

As shown in FIGS. 1 and 2, the trolley transport auxiliary vehicle in this embodiment has a first bar 10 extending in one direction and a second bar 20 extending in a direction orthogonal to the first bar 10. is configured as

The first bar 10 is abutted in parallel with trucks, which will be described later. , is attached to a moving vehicle that transports a trolley by power such as electricity. A protector 12 made of rubber or resin is attached to each of the areas with which the carriage abuts on the surface on which the carriage abuts in parallel. At the central portion of the first bar 10, an H-shaped connecting frame 11 serving as a first connecting receiving portion is erected. Further, third guides 60 are attached near both ends of the first bar 10, respectively. The guide 60 extends from the first bar 10 in the direction in which the carriage abuts, and on the inner surface thereof, a region of length L2 from the first bar 10 is a contact portion 61 with which the carriage abuts. , and the area ahead thereof forms an inclined surface 62 so that the width in the extending direction of the first bar 10 becomes narrower toward the tip. A swivel ring 72 whose orientation is variable is attached to the lower surface near both ends of the first bar 10 .

One end of the second bar 20 is connected to the central portion of the first bar 10, and the direction in which the carriage comes into contact with the first bar 10 from this connection, that is, is attached via a connecting device 30. It extends in the opposite direction to the car. A first guide 40 protruding by D1 in the direction in which the first bar 10 extends is provided at the end of the second bar 20 that is connected to the first bar 10 . The guide 40 has a contact portion 41 with which the carriage abuts in a region extending from the first bar 10 by a first length L1 shorter than the length L2. The end on the opposite side is connected to the second bar 20 via an inclined surface 42 . Since the length L1 of the contact portion 41 of the guide 40 is shorter than the length L2 of the contact portion 61 of the guide 60, the distance between the first bar 10 and the first bar 10 of the contact portion 61 of the guide 60 is reduced. is longer than the distance from the first bar 10 to the end opposite to the first bar 10 of the contact portion 41 of the guide 40 . Since the guide 40 protrudes by D1 in the direction in which the first bar 10 extends, the contact portion 41 is located at a position separated from the second bar 20 by the first distance D1 in the direction in which the first bar 10 extends. is parallel to the second bar 20 at . A second guide 50 projecting by D1 in the direction in which the first bar 10 extends is provided on the opposite side of the guide 40 of the second bar 20 to the first bar 10 . The protruding tip of the guide 50 serves as a contact portion 51 with which the carriage abuts. Since the guide 50 protrudes by D1 in the direction in which the first bar 10 extends, the contact portion 51 is located at a position separated from the second bar 20 by the first distance D1 in the direction in which the first bar 10 extends. is parallel to the second bar 20 at . A fixed ring 71 is attached to the lower surface of the central portion of the second bar 20, the direction of movement of which does not change as the direction in which the second bar 20 extends. The fixed wheel 71 has a larger diameter than the two swivel wheels 72 attached to the first bar 10, so that when the vehicle is attached via the connecting device 30, the swivel wheel 72 floats slightly. It will be like this. At the end of the second bar 20 opposite to the first bar 10, a connection pole 21 serving as a second connection receiving portion is erected. A pin base 22 is provided in the vicinity of the tip of the connecting pole 21 so that the upper surface thereof is at the same height as the H-shaped horizontal bar of the connecting frame 11. A connecting pin 23 is erected on the pin base 22. ing. Further, the second bar 20 is provided with an auxiliary bar 24 having one end fixed to the second bar 20 and the other end fixed to the connecting pole 21 . A swivel ring 73 whose diameter is smaller than that of the fixed ring 71 and whose orientation is variable is attached to the lower surface of the second bar 20 near the end opposite to the first bar 10 .

The heights of the first bar 10 and the second bar 20 are equivalent to the height of the floor plate of the truck, which will be described later.

A method of using the carriage assisting vehicle 1 configured as described above will be described below.

First, a trolley transported using the trolley transport auxiliary vehicle 1 shown in FIG. 1 will be described.

3A and 3B are diagrams showing an example of a trolley transported using the trolley transport auxiliary vehicle 1 shown in FIG. FIG. 2C is a view from above.

As a trolley transported using the trolley transport auxiliary vehicle 1 shown in FIG. 1, as shown in FIG. . The two side frames 82 are configured by combining metal pipes vertically and horizontally, and are mounted on the two short sides of the rectangular bottom plate 81 so as to stand facing each other. On the lower surface of the bottom plate 81, a swivel ring 84 whose direction is variable is attached to each of the four corners of the bottom plate 81, and a wheel 84 is attached to the substantially central portion of the long side of the bottom plate 81 with the longitudinal direction of the bottom plate 81 as the traveling direction. A fixed ring 83 whose direction is invariable is attached. The fixed ring 83 has a diameter larger than that of the four swivel rings 84, so that of the two fixed rings 83 and the four swivel rings 84, the two fixed rings 83 are always grounded, and the four swivel rings 84 are grounded at all times. , depending on the moving direction of the six-wheeled truck 80, the car 80 can easily move in any direction by making contact with or not contacting the ground.

4A and 4B are diagrams showing a state in which the six-wheeled truck 80 shown in FIG. 3 is held by the truck carrier auxiliary vehicle 1 shown in FIGS. ) is a side view.

As shown in FIG. 4, the six-wheeled truck 80 shown in FIG. Among them, the short side is arranged along the first bar 10 and the long side is arranged along the second bar 20, one short side of the bottom plate 81 is in contact with the first bar 10 via the protector 12, A part of the long side of the bottom plate 81 abuts on the abutting portions 41, 51, 61 of the guides 40, 50, 60, respectively, so that the bottom plate 81 is held in parallel. Therefore, the contact portion 61 of the guide 60 is separated from the contact portion 41 of the guide 40 by the length of the short side of the bottom plate 81 of the six-wheeled truck 80 in the direction away from the second bar 20. It is parallel to the second bar 20 facing the contact portion 41 of 40 .

The trolley transport auxiliary vehicle 1 holding the six-wheeled trolley 80 is attached to a moving vehicle 100 that transports the six-wheeled trolley 80 by means of power such as electricity through a connecting device 30 . Then, the power of the moving vehicle 100 causes the six-wheeled truck 80 to be transported together with the auxiliary vehicle 1 for transportation. At that time, each of the two six-wheeled carriages 80 held by the auxiliary carriage 1 is fastened with a fastener (not shown) such as a chain to the side frame 82 located on the opposite side of the first bar 10. Therefore, it is possible to avoid the separation from the carriage auxiliary vehicle 1 in the middle of the transportation. In addition, since the free wheel 72 is attached to the lower surface of the first bar 10 near both ends, the first bar 10 can be prevented from being tilted.

Next, the operation of holding the six-wheeled truck 80 shown in FIG. 3 by the auxiliary truck carrier 1 shown in FIGS. 1 and 2 will be described.

FIG. 5 is a view for explaining the operation of holding the six-wheeled carriage 80 shown in FIG. 3 by the carriage auxiliary vehicle 1 shown in FIGS. 1 and 2, and is a view seen from above.

As described above, the six-wheeled truck 80 shown in FIG. 3 has two fixed wheels 83 and four free wheels 84 whose orientation is unchanged with the longitudinal direction of the bottom plate 81 as the traveling direction. The four universal wheels 84 are grounded or not grounded depending on the moving direction of the six-wheel truck 80 and move. Therefore, when the direction is changed, the direction is changed with the fixed ring 83, whose orientation is unchanged, always being in contact with the ground. A large force is applied to move the bottom plate 81 in the longitudinal direction, making it difficult for the bottom plate 81 to shift in the lateral direction. Therefore, when the direction is changed, the corner of the bottom plate 81 is swung outward with respect to the fixed ring 83 to change the direction.

Therefore, when holding the six-wheeled trolley 80 shown in FIG. 3 by the trolley transport auxiliary vehicle 1 shown in FIGS. The six-wheeled truck 80 is introduced into the area surrounded by 20, and first, as shown in FIG. The forward side in the approach direction is swung toward the second bar 20 side. At this time, since the contact portion 51 of the guide 50 is separated from the second bar 20 by the distance D1, the front side of the six-wheeled truck 80 in the approach direction can be swung toward the second bar 20 by the distance D1. can.

Then, the six-wheeled truck 80 is further advanced by sliding the side surface of the second bar 20 while the front corner of the bottom plate 81 of the six-wheeled truck 80 in the approach direction is in contact with the second bar 20. As it moves forward, the front corner of the bottom plate 81 of the six-wheel truck 80 in the approach direction abuts against the guide 40 . The guide 40 is provided with an abutting portion 41 that abuts on the bottom plate 81 of the six-wheeled truck 80 to be held, and is provided with an inclined surface 42 that connects the abutting portion 41 and the second bar 20 . Therefore, as shown in FIG. 5C, the corner of the bottom plate 81 of the six-wheeled truck 80 on the front side in the approach direction slides on the inclined surface 42, and the six-wheeled truck 80 enters. The front corner of the bottom plate 81 of the guide 80 contacts the contact portion 41 of the guide 40 . In this way, the end of the contact portion 41 of the guide 40 opposite to the first bar 10 is connected to the second bar 20 via the inclined surface 42, so that the six-wheeled truck 80 is arranged in parallel. When held in a transporting state, the corner of the bottom plate 81 can be slid over the side surface of the second bar 20 and the inclined surface 42 to guide it to the contact portion 41 of the guide 40 .

5(d), one short side of the bottom plate 81 comes into contact with the first bar 10 via the protector 12, and the long side of the bottom plate 81 are in contact with the contact portions 41, 51, 61 of the guides 40, 50, 60, respectively, and the six-wheeled carriage 80 is held by the carriage auxiliary vehicle 1. As shown in FIG. At that time, the length L2 of the contact portion 61 of the guide 60 from the first bar 10 is longer than the length L1 of the contact portion 41 of the guide 40 from the first bar 10, thereby Even if the front side of the approach direction of the 80 moves left and right away from the second bar 20, the bottom plate 81 can easily enter between the guide 40 and the guide 60. - 特許庁

FIG. 6 is a view for explaining the action when the six-wheeled carriage 80 held by the carriage auxiliary vehicle 1 as shown in FIG. 5 is released, and is a view seen from above.

When detaching the six-wheeled truck 80 held by the auxiliary vehicle 1 as shown in FIG. 5, the six-wheeled truck 80 is moved away from the first bar 10 as shown in FIG. First, as shown in FIG. 6(b), the front side of the six-wheel truck 80 in the direction of separation is swung to the side opposite to the second bar 20. Then, as shown in FIG. At this time, as described above, at the substantially central portion in the longitudinal direction of the bottom plate 81 to which the fixed ring 83 is attached, it is difficult for the bottom plate 81 to shift in the lateral direction, but the abutment portion 41 of the guide 40 does not move. However, since it is separated from the second bar 20 by the distance D1, it is possible to swing the rear side of the six-wheeled truck 80 in the detachment direction by the distance D1 toward the second bar 20, whereby the six-wheeled truck 80 can be swung to the side opposite to the second bar 20.例文帳に追加

Then, as shown in FIG. 6(c), the side surface of the second bar 20 is slid while the rear corner of the bottom plate 81 of the six-wheeled truck 80 in contact with the second bar 20. After that, when the fixed wheels 83 of the six-wheeled truck 80 are aligned with the guide 50, the front side of the six-wheeled truck 80 in the separating direction is moved to the opposite side of the second bar 20. Then, as shown in FIG. 6(d), the six-wheeled carriage 80 is separated from the carriage auxiliary vehicle 1.

Further, as shown in FIG. 6(b), the six-wheeled truck 80 is moved to the truck carrier auxiliary vehicle 1 while the front side of the bottom plate 81 of the six-wheeled truck 80 in the detachment direction is swung to the side opposite to the second bar 20. As shown in FIG. can be separated from

In this manner, at the connecting portion between the first bar 10 and the second bar 20, the second bar 20 and the second bar 20 are located at a distance D1 in the direction in which the first bar 10 extends from the second bar 20. Two guides 40 each having a parallel abutment 41 are provided and on the opposite side of the guide 40 of the second bar 20 to the connection of the first bar 10 and the second bar 20. Furthermore, two guides 50 each having an abutting portion 51 parallel to the second bar 20 are mounted at a predetermined distance from the guide 40 and separated from the second bar 20 by a distance L1. When holding the two 6-wheeled trucks 80 in a state of being transported in parallel, or when removing the 6-wheeled truck 80 from the held state, the contact portions 41, 51, 61 of the guides 40, 50, 60 and With respect to the holding area of the six-wheeled truck 80 surrounded by the first bar 10, the corners of the bottom plate 81 move by a distance D1 between the guides 40 and 50 as the six-wheeled truck 80 changes direction. It is possible to swing to the side of the second bar 20, so that the two six-wheeled trucks 80 can be easily held in a state of being transported in parallel, and the six-wheeled trucks 80 can be easily removed from the held state. can.

Further, as described above, the second guide 20 is arranged so that the bottom plate 81 of the six-wheeled truck 80 is aligned with the guide 40 when the fixed wheels 83 of the six-wheeled truck 80 are aligned with the guides 50 in the direction in which the first bar 10 extends. If the fixed ring 83 is attached to the bottom plate 81, the guide 40 and the guide 50 are attached to the bottom plate 81 so that the bottom plate 81 is not easily displaced in the width direction. In between, the corner of the bottom plate 81 can be swung toward the second bar 20 as the direction of the six-wheeled truck 80 is changed by a distance D1, so that the two six-wheeled trucks 80 are arranged in parallel. The six-wheeled truck 80 can be more easily held in a transporting state and further easily removed from the held state. In addition, since the second bar 20 is present between the two six-wheeled trucks 80 to be held, when the two six-wheeled trucks 80 are held in a state of being transported in parallel, or in a held state When the six-wheeled truck 80 is removed from the carriage, the commodities and articles mounted on the six-wheeled trucks 80 arranged in parallel do not collide with each other.

Next, a method for serially connecting and conveying the six-wheeled carriage 80 shown in FIG. 3 by connecting the auxiliary carriage 1 shown in FIGS. 1 and 2 will be described.

7A and 7B are diagrams showing an embodiment of a connection bar that connects the carriage carriage auxiliary vehicle 1 shown in FIGS. is.

As shown in FIG. 7, the connecting bar in this embodiment is composed of a T-shaped base. A connecting hole 92 serving as a second engaging portion is provided at the end of the vertical bar portion of the mold opposite to the horizontal bar. Thus, the connecting bar 90 is provided with a connecting groove 91 at one end and a connecting hole 92 at the other end. The connecting groove 91 is provided on one surface of the base so as to extend in the direction in which the T-shaped horizontal bar portion extends. Moreover, the length L3 from the connecting groove 91 to the connecting hole 92 is equal to or longer than the length of the short side of the bottom plate 81 of the six-wheeled truck 80 shown in FIG.

FIG. 8 is a diagram showing a state in which the carriage assisting vehicles 1 shown in FIGS. 1 and 2 are connected in series using the connection bar 90 shown in FIG. 7, and is a side view.

1 and 2 are connected in series using the connection bar 90 shown in FIG. The coupling pin 23 provided on the connection pole 21 of the carriage transportation auxiliary vehicle 1 is inserted into the connection hole 92 of the connection bar 90 and engaged, and the connection device 30 is used to connect the carriage transportation assistance attached to the moving vehicle. The connecting groove 91 of the connecting bar 90 is hooked and engaged with the H-shaped horizontal bar of the connecting frame 11 provided on the first bar 10 of the carriage 1 connected to the car 1 . As a result, the two carriage assisting vehicles 1 are connected in series via the connecting bar 90 . At this time, as described above, the upper surface of the pin base 22 provided with the coupling pin 23 is at the same height as the H-shaped horizontal bar of the connecting frame 11, so that the connecting bar 90 is in a horizontal state. becomes.

In this way, one of the two auxiliary truck transportation vehicles 1 is connected to the auxiliary truck transportation vehicle unit by using the auxiliary truck transportation vehicle unit composed of the auxiliary truck transportation vehicle 1 and the connecting bar 90 connected thereto. The connecting pin 23 provided on the second bar 20 is inserted into the connecting hole 92 of the connecting bar 90, and the connecting bar 90 is inserted into the connecting frame 11 provided on the first bar 10 of the other carriage carrier auxiliary vehicle 1. By hooking the connection groove 91, a plurality of the trolley carrier assisting vehicles 1 are connected in series, so that the six-wheeled trolleys 80 arranged in parallel and held on the trolley carrier assisting vehicle 1 can be easily arranged in series. It can be connected and transported.

9 shows that the length L3 from the connecting groove 91 of the connecting bar 90 shown in FIG. FIG. 10 is a diagram for explaining the effect of , viewed from above.

The two carriage conveyance auxiliary vehicles 1 connected by the connection bar 90 are connected by inserting the coupling pin 23 provided in one of the carriage conveyance auxiliary vehicles 1 into the connection hole 92 of the connection bar 90. 90 is rotatable with respect to the second bar 20 of one of the carriage carriages 1 . Therefore, when the two auxiliary vehicle carriages 1 are connected and turn, the two auxiliary vehicle carriages 1 connected by the connecting bar 90 do not move the connecting pin 23 inserted into the connecting hole 92 of the connecting bar 90. It will be bent at the center.

At that time, the length L3 from the connecting groove 91 of the connecting bar 90 to the connecting hole 92 is longer than the length of the short side of the bottom plate 81 of the six-wheel truck 80 shown in FIG. Thus, when turning for a direction change, the angle formed by the six-wheeled trucks 80 connected in series can be reduced to 90 degrees, and an increase in turning radius can be avoided. Further, in particular, a carriage in which the six-wheeled carriage 80 is not held by the carriage 80 attached to the moving vehicle using the connecting device 30 and is connected to the carriage 1 by the connecting bar 90. In the case of moving two carriage carriages 1 with the carriage 1 in a state where the 6-wheel carriage 80 is held by the carriage 1, the carriage 1 attached to the carriage using the connecting device 30 However, since the added weight is small, there is a risk that a wheelie in which the swivel wheel 72 attached to the first bar 10 is greatly lifted from the ground will occur. However, the wheelie can be prevented by attaching the free wheel 73 to the lower surface of the second bar 20 near the end opposite to the first bar 10 .

Also, if a cushioning material such as a sponge having a certain thickness is attached to the front surface of the first bar 10, even if the articles mounted on the six-wheeled truck 80 protrude from the bottom plate 81, the protruding amount can be reduced. is less than the thickness of the cushioning material, when the angle formed by the six-wheeled trolleys 80 connected in series becomes as small as 90 degrees, the protruding articles are inserted into the connecting frame 11 and the connecting groove of the connecting bar 90. It is possible to avoid colliding with the trolley transport auxiliary vehicle 1 on which the 91 is hooked.

In addition, although the state shown in FIG. More than one carriage carriage 1 can be connected in series.

In this embodiment, an example in which the guide 40 is provided at the end of the second bar 20 connected to the first bar 10 has been described, but the guide 40 is It can be attached to either the first bar 10 or the second bar 20 as long as it is provided with the contact portion 41 at or near the connecting portion between the bar 10 and the second bar 20. may

Further, in this embodiment, the protector 12 is attached to the surface of the first bar 10 with which the six-wheeled truck 80 abuts side by side, and one short side of the bottom plate 81 of the six-wheeled truck 80 is connected to the first bar 12 via the protector 12 . Although the protector 12 is in contact with one bar 10 as an example, the protector 12 may be attached as necessary. That is, in the present invention, when one short side of the bottom plate 81 of the six-wheeled truck 80 contacts the first bar 10, one short side of the bottom plate 81 of the six-wheeled truck 80 is pushed through the protector 12. A case where one short side of the bottom plate 81 of the six-wheeled truck 80 abuts against the first bar 10 without the protector 12 interposed therebetween is included.

1 trolley carrier auxiliary vehicle 10 first bar 11 connection frame 12 protector 20 second bar 21 connection pole 22 pin base 23 connection pin 24 auxiliary bar 30 connection device 40, 50, 60 guide 41, 51, 61 contact Part 42, 62 Inclined surface 71, 83 Fixed wheel 72, 73, 84 Swivel wheel 80 6-wheel truck 81 Bottom plate 82 Side frame 90 Connection bar 91 Connection groove 92 Connection hole 100 Vehicle

Claims (5)

It has a rectangular bottom plate, and at each of the four corners of the bottom plate, a swivel ring whose orientation is variable is attached, and is oriented substantially in the center of the long side of the bottom plate with the longitudinal direction of the bottom plate as the traveling direction. A trolley-transporting auxiliary vehicle that is attached with a fixed wheel that does not change, holds two trolleys that are transported in a state where the fixed wheel is always grounded, and assists the parallel transport of the two trolleys,
a first bar configured to be attachable to a moving vehicle for transporting the carriage, and with which one of the short sides of the bottom plate is in contact with the two carriages in parallel;
a second bar having one end connected to the central portion of the first bar, extending from the connecting portion in the direction opposite to the vehicle by at least the length of the long side of the bottom plate, and having wheels attached to its lower surface; ,
2, provided at or near the connection portion and parallel to the second bar at a position separated by a first distance in the direction in which the first bar extends from the second bar; two first guides;
The second bar is attached to the first guide on the side opposite to the connecting portion with a predetermined distance from the first guide, and the first bar is separated from the second bar. two second guides each having an abutting portion parallel to the second bar at positions separated by the first distance in the extending direction;
Attached to the first bar, the first guide abuts at a position separated from the abutment portion of the first guide by the length of the short side of the bottom plate in a direction away from the second bar. two third guides each having an abutting portion parallel to the second bar facing the portion;
A trolley transport auxiliary vehicle, wherein the abutment portions of the first, second and third guides and the first bar abut on the bottom plate of the trolley to hold the two trolleys. In the trolley transport auxiliary vehicle according to claim 1,
The second guide is mounted at a position where the bottom plate of the truck does not come into contact with the first guide when the fixed wheels of the truck are aligned with the second guide in the direction in which the first bar extends. A trolley transport auxiliary vehicle. In the carriage carrier auxiliary vehicle according to claim 1 or claim 2,
In the first guide, an end portion of the contact portion of the first guide opposite to the first bar is an inclined surface that is inclined with respect to the direction in which the first and second bars extend. a trolley transport auxiliary vehicle connected to said second bar via a. In the carriage carrier auxiliary vehicle according to any one of claims 1 to 3,
The contact portion of the third guide has a distance from the first bar to the end opposite to the first bar from the first bar of the contact portion of the first guide. A trolley transport auxiliary vehicle longer than the distance to the end opposite said first bar. In the carriage carrier auxiliary vehicle according to any one of claims 1 to 4,
The first bar has wheels attached to its lower surface in the vicinity of both ends thereof.

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