JPH09142307A - Transportation carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transportation carriage capable of easily passing through a passage with a narrow width by separating a pair of carriage units via the release of a coupling means, and allowing them to independently travel. SOLUTION: A prescribed transportation carriage A is separated from a towing vehicle B or another transportation carriage A. The coupling on the front side between one carriage unit 1 a and the other carriage unit 1b aligned on the right and left on the first coupling mechanism 5 of the separated transportation carriage A is released. The coupling on the rear side between one carriage unit 1a and the other carriage unit 1b aligned on the right and left on the second coupling mechanism 6 on the rear side of the transportation carriage A is released. Both carriage units 1a, 1b are separated from each other. The carriage units 1a, 1b are independently traveled via the thrusting work by workers respectively through a narrow-width road, and the cargos on the carriage units 1a, 1b are conveyed to the prescribed carry-in position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage for use in, for example, carrying various assembly parts to various lines of an assembly line in various production plants.

[0002]

2. Description of the Related Art A large number of transport carts are prepared in a production plant, etc., and the transport carts are loaded with loads such as assembly parts, and the transport carts are connected in a tandem manner. Is towed by a towing vehicle to move a predetermined load on a predetermined line while moving within the factory.

[0003]

However, there are many narrow passages in the factory where it is difficult for towed vehicles and trolleys to pass through, and it is necessary to carry in luggage such as assembly parts through such passages. There is. In such a case, the load loaded on the trolley is reloaded into a small trolley for hand pushing, and the trolley is carried to a predetermined place through the narrow passage.

However, if the cargo is transshipped every time a narrow passage is passed, the transshipment work requires a great deal of labor and time, the efficiency of transporting the cargo is lowered, and the transshipment location is limited. Since it is necessary to prepare a small trolley for hand-holding in advance, its management becomes troublesome.

The present invention has been made by paying attention to such a point, and an object thereof is to easily pass through a passage having a narrow width without requiring a small dolly for transshipment or a transshipment work thereof. The purpose of the present invention is to provide a carriage for transportation.

[0006]

In order to achieve such an object, the present invention has a pair of carriage units in which transport carriages are arranged in parallel on the left and right, and which are capable of traveling independently.
The carriage unit is detachably connected to each other, and the pair of carriage units can be separated and run independently by releasing the connecting means.

Therefore, when the carrier truck is towed by a towing vehicle to pass through the factory and approaches a narrow passage that is difficult to pass, the carrier truck is separated into small truck units, and It is possible to individually carry the separated small trolley units by hand with the luggage loaded and carry the luggage to a predetermined place through a narrow passage.

In the invention according to claim 2,
The coupling means for coupling a pair of carriage units is configured by a first coupling mechanism provided at a front portion of the truck unit and a second coupling mechanism provided at a rear portion of the truck unit, In the invention according to item 3, the first coupling mechanism provided at the front portions of the pair of carriage units includes a first arm provided at a side end of the front portion of one of the carriage units,
A second arm provided opposite to the first arm at a side end of a front portion of the other trolley unit and superimposing on the first arm, and the first arm superposed on each other. And a connecting pin that is provided in the overlapping portion of the second arm so as to detachably penetrate the both arms, and a connecting portion that can be connected to the transport carriage,
In the invention according to claim 4, the second coupling mechanism provided at the rear part of the pair of bogie units includes an arm provided at a side end of the rear part of one bogie unit and the other facing the arm. Is provided at a side end of a rear portion of the carriage unit, and is provided so as to removably penetrate the arm and the bracket, and the overlapping portion of the arm and the bracket which are overlapped with each other. It is characterized by comprising a connecting pin and a connecting portion connectable to the transport carriage.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a plurality of carriages A according to the present invention are connected in a vertical state and the carriages A are towed by a towing vehicle B.

As shown in FIG. 1 and FIG. 2, the carriage A according to the present invention is composed of a pair of carriage units 1a and 1b arranged in parallel on the left and right, and each carriage unit 1a and 1b is independent. It is configured to run.

That is, each carriage unit 1a, 1b is
A flat plate-shaped carrier 2, four rotatable wheels 3 attached to the front and rear parts of the lower surface of the carrier 2, and the carrier 2
Partition fences 4 and 4 which are attached to the front edge and the rear edge of the above so as to stand upright, respectively, and which also serve as a handle for pushing by hand.

The cart units 1a, 1 arranged side by side
Both b are detachably coupled to each other via a first coupling mechanism 5 and a second coupling mechanism 6 as coupling means.

The structure of the first coupling mechanism 5 is shown in FIGS.
The first coupling mechanism 5 is shown in FIG. 1 and is provided at the side end of the front portion of the one truck unit 1a.
1 and a second arm 12 facing the first arm 11 and provided at the side end of the front portion of the other bogie unit 1b. The first arm 11 and the second arm 1 are provided.
2 and 2 are coupled via a coupling tool 13. As shown in FIG. 5, the coupling tool 13 comprises a pair of coupling pins 15 and 15 mounted on the lower surface of a plate-shaped plate 14 and a handle 16 mounted on the upper surface thereof.

Further, the structure of the first coupling mechanism 5 will be described in detail. The loading platform 2 in one cart unit 1a.
Brackets 17 and 18 having U-shapes are attached to the front end surface of the vehicle and the front end surface of the loading platform 2 of the other cart unit 1b so as to be adjacent to each other. Then, the base portion of the first arm 11 is attached to one bracket 17 via a pivot pin 19 so as to be vertically rotatable, and the support piece 2 is attached to the other bracket 18 via a pivot pin 20.
One end of the first arm 1 is rotatably mounted in the vertical direction, and the base of the second arm 12 is attached to the other end of the support piece 21 via a pivot pin 22. It is attached so that it can rotate in the direction around the axis.

A first unit provided on one carriage unit 1a
The arm 11 rotates from a horizontal state, which extends substantially horizontally toward the front of the carriage unit 1a, upwardly about a pivot pin 19 as a fulcrum, and converts it into a standing state in which it stands up substantially vertically, as shown in FIG. A stopper 25 for holding the horizontal state is horizontally attached to the bracket 17, and a rotatable stopper 26 for holding the standing state is provided on a side portion of the bracket 17.

On the upper surface of the first arm 11 near the tip,
As shown in FIGS. 3 to 5, a holder 29 is attached, and the holder 29 has a horizontal portion 29a facing the upper surface of the first arm 11 with a gap therebetween, and one of the horizontal portion 29a. The vertical portion 29b is connected to the side edge portion. The horizontal portion 29a of the holder 29 and the first arm 11 have a pair of through holes 30, 30, 31, respectively.
31 is formed coaxially, and a through hole 32 that forms a connecting portion is further formed at the tip of the first arm 11.

The second provided on the other truck unit 1b
The arm 12 of FIG. 1 extends in a substantially horizontal state with the support piece 21 toward the front of the carriage unit 1b, and from this horizontal state, the arm 12 pivots upward together with the support piece 21 as a fulcrum to stand substantially vertically. In this state, the second arm 12 is pivoted downward about a pivot pin 22 as a fulcrum to a folded state in which the second arm 12 is tilted sideways. It can be held. A stopper 33 for holding the folded state of the second arm 12 is provided on the front end surface of the loading platform 2.

A pair of through holes 34, 34 corresponding to the through holes 30, 30, 31, 31 of the first arm 11 are formed at the tip of the second arm 12. Then, in a state where the second arm 12 is held horizontally, the tip portion of the second arm 12 is inserted into the inside of the holder 29 and is superposed on the first arm 11, so that the holder 29
Through holes 30 and 30 and through hole 3 of the second arm 12
Under the condition that the through holes 31, 34 of the first arm 11 are coaxially opposed to each other, the holders 29 are placed in the through holes 30, 30, 34, 34, 31, 31.
The coupling pins 15 and 15 of the coupling tool 13 are inserted from above, and the first arm 11 and the second arm 12 are coupled to each other, and by this coupling, one truck unit 1a and the other truck unit 1b are connected. And are joined together at their front.

FIGS. 8 and 9 show the structure of the second coupling mechanism 6 provided at the rear portion of the carriage A. This second coupling mechanism 6 is the rear portion of one carriage unit 1a. 40 provided on the side end of the arm, and this arm 4
A bracket 38 is provided at the side end of the rear part of the other bogie unit 1b so as to face 0, and the arm 40 and the bracket 38 are coupled via a coupling pin 41.

Further, the structure of the first coupling mechanism 5 will be described in detail. U-shaped brackets 37 and 38 are respectively provided so as to be adjacent to the rear end surfaces of the respective carrier beds 2 and 2 of the carriage units 1a and 1b. It is installed.

One end of an arm 40 is attached to one bracket 37 via a pivot pin 39 so as to be rotatable in the horizontal direction, and the other end of the arm 40 is rotated by the rotation. The bracket 38 can be inserted inside.

The bracket 38 has an upper piece 38a and a lower piece 38b facing each other.
a and the lower piece 38b are coaxial with the through holes 41,
41 is formed, and a through hole 42 that can face the through holes 41, 41 is formed at the other end of the arm 40. And the upper piece 38a and the lower piece 38 of the bracket 38
Under the condition that the other end of the arm 40 is disposed between the arm 40 and b, and the through holes 41, 42, 41 are coaxially opposed to each other, the through holes 41, 42, 41 are arranged from above the upper piece 38a. The connecting pin 43 is inserted over the area, whereby the one bogie unit 1a and the other bogie unit 1b are connected to each other at the rear part.

A U-shaped bracket 46 is attached to an intermediate portion of a side edge of the arm 40 so as to project to the rear side of the truck units 1a and 1b. The bracket 46 includes an upper piece 46a and a lower piece 46b facing each other.
Through holes 47, 47 are coaxially formed in the upper piece 46a and the lower piece 46b, and a guide pipe 48 is attached to the upper surface of the upper piece 46a so as to be continuous with the through holes 47, 47. This guide pipe 48
A long connecting shaft 49 is vertically slidably inserted therein.

A long guide groove 50 is formed on the side surface of the guide pipe 48 along the axial direction thereof.
A restriction pin 51 attached to the connecting shaft 49 is inserted into the shaft 0. An engaging portion 50a extending in the circumferential direction of the guide pipe 48 is formed at the upper end portion of the guide groove 50. The connecting shaft 49 is pulled up to interpose the regulating pin 51 in the engaging portion 50a. Thus, the connecting shaft 49 is prevented from descending, and its lower end is held at a position above the bracket 46. Then, the connecting shaft 49 is rotated to disengage the restriction pin 51 from the locking portion 50a, and the guide groove 5
By shifting to 0, the connecting shaft 49 can be lowered, and the lower part of the connecting shaft 49 enters the through holes 47, 47 of the bracket 46 by the lowering.

FIG. 5 shows the structure of the connecting portion between the carriage A and the towing vehicle B. At the rear of the towing vehicle B, a U-shaped bracket 53 is attached so as to project to the rear side thereof. Has been. The bracket 53 has an upper piece 53a and a lower piece 53b facing each other, and through holes 54, 54 are coaxially formed in the upper piece 53a and the lower piece 53b, respectively.

Then, the first portion protruding from the front part of the carriage A for transportation
The tip end of the first arm 11 of the coupling mechanism 5 is inserted between the upper piece 53a and the lower piece 53b of the bracket 53. In this state, the through hole 54 of the upper piece 53a,
Through hole 32 of arm 11 and through hole 54 of lower piece 53b
The connecting pin 55 is inserted from above the upper piece 53a, and the connecting pin 55 causes the towing vehicle B and the carriage A to move.
It is intended to be connected with.

Another carrying carriage A is further connected to the rear side of the carrying carriage A, and the structure of this connecting portion is shown in FIG. As shown in this figure, the upper piece 46a and the lower piece 46 of the bracket 46 in the second coupling mechanism 6 provided at the rear portion of the carriage A arranged on the front side.
The front end of the first arm 11 of the first coupling mechanism 5 provided at the front part of the rear transportation cart A is inserted between the first and second arms 11b and 11b, and the connecting shaft 49 is dropped downward in this state. Rarely, the connecting shaft 49 is used as the through hole 47 of the upper piece 46 a of the bracket 46 and the through hole 3 of the first arm 11.
2. The bracket 46 is inserted through the through hole 47 of the lower piece 46b, and the connecting shaft 49 connects the front carriage A and the rear carriage A.

With such a connecting structure, as shown in FIG. 1, a plurality of carriages A are connected in a column.
Then, a predetermined baggage C such as an assembly part is loaded on the loading platform 2 of each transport carriage A, the towing vehicle B is driven in this state, and each transport carriage A is towed to a predetermined line such as an assembly line. And carry a predetermined baggage C into each site. When the towing vehicle B or the carriage A has a narrow width in the middle of the passage leading to the site where the luggage should be carried in, a predetermined carriage A is provided at the narrow width. Is separated from the towing vehicle B or other carrier truck A.

When disconnecting the carriage A from the towing vehicle B, the connecting pin 55 shown in FIG. 5 is pulled out from the bracket 53 of the towing vehicle B. Due to this extraction, the towing vehicle B
The bracket 53 and the arm 11 of the transport carriage A are disconnected, so that the transport carriage A can be easily separated from the towing vehicle B.

When the carrier truck A is to be separated from the other carrier trucks A, the connecting shaft 49 shown in FIG. 11 is pulled upward and the connecting shaft 49 is rotated to lock the regulating pin 51. Release into 50a. As a result, the connecting shaft 49 is held in the raised position where it is separated from the bracket 46, and the arm 11 of one of the transport carriages A and the bracket 46 of the other transport carriage A are disconnected, and therefore the one transport carriage A is removed. The other carriage A
Can be easily separated from.

After the predetermined transport carriage A is separated in this way, the coupler 13 in the first coupling mechanism 5 of the separated transport carriage A is pulled up as shown in FIG. The second arm 12 is rotated in the counterclockwise direction in FIG.
The front side connection between a and the other bogie unit 1b is released.

Next, the connecting pin 43 in the second connecting mechanism 6 on the rear side of the carriage A is pulled out. And FIG.
From the state (a), the arm 40 is rotated counterclockwise as shown in FIG. 9 (b) to release the coupling between the one truck unit 1a and the other truck unit 1b arranged side by side on the rear side. .

In this manner, the front side and the rear side of the one truck unit 1a and the other truck unit 1b arranged side by side are released from each other to separate them from each other. Then, for example, while one of the cart units 1a is traveling by hand by a worker alone, the cargo on the cart unit 1a is conveyed to a predetermined carry-in place through a narrow passage.

At this time, as shown in FIG. 6, the first arm 11 provided at the front portion of the carriage unit 1a stands up from the front end edge of the loading platform 2 so as to stand above it.
Hold through. As a result, there is no danger that the tip of the arm 12 will be caught or come into contact with another object when the truck unit 1a is running, and the truck unit 1a can be run smoothly and safely.

Further, the other truck unit 1b also travels in an independent state by a hand pushing operation by an operator and passes through a narrow passage to convey a load on the truck unit 1b to a predetermined loading place.

At this time, as shown in FIG. 7, the arm 12 provided at the front part of the carriage unit 1b is provided with the load carrier 2 as shown in FIG.
It is folded along the front edge of and is held by the stopper 33. As a result, there is no danger that the tip of the arm 12 will be caught or come into contact with another object when the carriage unit 1b is running, and the carriage unit 1b can be smoothly and safely run.

As described above, each carriage A can be separated into the carriage units 1a and 1b as required, and the separated carriage units 1a and 1b are made to run in a narrow passage in their individual states. Therefore, the loaded luggage can be transported to a predetermined loading site, and therefore, it is possible to efficiently load the luggage to the predetermined site without omitting the transshipment of the luggage to a small trolley.

On the other hand, when the carriage unit 1 is constructed again by combining both of the carriage units 1a and 1b, first, the carriage units 1a and 1b are arranged side by side so that their side edges are adjacent to each other. The first arm 11 standing upright on the front part of the one truck unit 1a is pivoted to the front side of the loading platform 2 with the pivot pin 19 as a fulcrum to maintain the first arm 11 in the horizontal state, and the other truck unit 1b. The second arm 12 folded and arranged at the front part of the arm is first pivoted upward with the pivot pin 22 as a fulcrum to stand up along the longitudinal direction of the support piece 21, while supporting the arm 12. The pivot pin 20 is rotated integrally with the piece 21 around the fulcrum to the front side of the loading platform 2 and is held in a horizontal state. Then, the second arm 12 is rotated in the clockwise direction in FIG. 3 about the pivot pin 22 as a fulcrum, and the tip end thereof is advanced to the lower surface side of the holder 29 in the first arm 11 to move the first arm 11 The second arm 12 is overlaid on top. And the through holes 30, 30 of the holder 29
And the through holes 34, 34 of the second arm 11 and the through holes 31, 31 of the first arm 11, as shown in FIG.
The positions are aligned so as to be coaxially arranged, and in this state, the connecting pins 15 and 15 of the connecting device 13 are inserted from above the holder 29 over the through holes 30, 30, 34, 34, 31, and 31. As a result, the front sides of the truck units 1a and 1b are joined together.

Next, as shown in FIG. 9, on the rear side of the bogie units 1a and 1b, the arm 40 of one of the bogie units 1a is rotated clockwise around the pivot pin 39 as a fulcrum, as shown in FIG. The tip portion is inserted into the bracket 38 of the other truck unit 1b. Then, as shown in FIG. 10, the through hole 41 of the upper piece 38 a of the bracket 38, the through hole 42 of the arm 40, and the lower piece 38 of the bracket 38.
The positions are aligned so that the through holes 41 of b are coaxially arranged, and in this state, the coupling pin 43 is inserted from above the bracket 38.
Is inserted over each through hole 41, 42, 41. As a result, the rear sides of the truck units 1a and 1b are joined together.

As a result, the pair of left and right carriage units 1a and 1b are connected to each other to form an integral carriage A. When connecting the carriage A to the towing vehicle B, first, as shown in FIG. 5, the tip end of the first arm 11 protruding to the front of the carriage A is attached to the bracket 53 of the towing vehicle B. It is inserted between the upper piece 53a and the lower piece 53b. Then, the through hole 54 of the upper piece 53a of the bracket 53, the through hole 34 of the arm 11, and the through hole 54 of the lower piece 53b of the bracket 53 are aligned so as to be coaxially arranged. The connecting pin 55 is inserted from above from the through holes 54, 34, 54. As a result, the carriage A is connected to the towing vehicle B.

Further, when the carriage A is connected to the rear of another carriage A, as shown in FIG. 11, the upper piece 46a of the bracket 46 at the rear of the carriage A arranged on the front side. Between the lower part 46b and the lower piece 46b, the tip of the first arm 11 protruding from the front part of the rear carriage A is inserted. At this time, the connecting shaft 49 in the guide pipe 48 provided on the bracket 46 is held at the upper position. Inside the bracket 46, the first arm 1
1 is inserted, the connecting shaft 49 is dropped downward, and the connecting shaft 49 is attached to the upper piece 4 of the bracket 46.
6a, the through hole 34 of the first arm 11, and the through hole 47 of the lower piece 46b of the bracket 46.

At this time, the front transport carriage A and the rear transport carriage A approach each other to form a narrow space between them, but the connecting shaft 49 extends upward in the space. Therefore, by operating this connecting shaft 49, operations such as connecting and disconnecting the arm 11 can be easily performed.

The connecting shaft 49 is connected to the through hole 47 of the upper piece 46a of the bracket 46, the through hole 34 of the first arm 11 and the through hole 4 of the lower piece 46b of the bracket 46.
By inserting over 7, the front carriage A
And the rear carriage A are connected.

[0044]

As described above, according to the present invention, when a towing vehicle is towed by a towing vehicle to pass through a factory, and when it approaches a narrow passage which is difficult to pass through, the vehicle is to be carried. Can be separated into each small dolly unit, and the separated small dolly units can be individually pushed while running to carry the goods, and the luggage can be carried into a predetermined place through a narrow passage. Therefore, it is possible to achieve efficient transportation work without the need for management such as reloading the luggage one by one or preparing a separate cart for hand pushing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a towed state of a transportation cart according to an embodiment of the present invention.

FIG. 2 is a plan view of the carrier truck.

FIG. 3 is a plan view showing a first coupling mechanism of the carriage.

FIG. 4 is a perspective view showing a first coupling mechanism of the carriage.

FIG. 5 is a cross-sectional view showing a first coupling mechanism of the carrier truck.

FIG. 6 is a first part of a first coupling mechanism of the carriage.
FIG. 6 is a front view showing a state in which the arm of the robot is raised.

FIG. 7 is a second part of the first coupling mechanism of the carrier truck.
Front view showing a state in which the arm of the is folded.

FIG. 8 is a perspective view showing a second coupling mechanism of the carrier truck.

FIG. 9 is a plan view showing a second coupling mechanism of the carriage.

FIG. 10 is a cross-sectional view of a disassembled state of a joint portion between an arm and a bracket in a second joint mechanism of the carrying carriage.

FIG. 11 is a sectional view of a second coupling mechanism of the carriage.

[Explanation of symbols]

 A ... Carriage trucks 1a, 1b ... Truck unit 5 ... 1st coupling mechanism 6 ... 2nd coupling mechanism 11 ... 1st arm 12 ... 2nd arm 15 ... coupling pin 37 ... Bracket 40 ... Arm 43 ... coupling pin

Claims (4)

[Claims] 1. A pair of right and left side-by-side side-by-side carriage units capable of independent traveling, and a coupling means for detachably coupling these truck units, and a pair is formed by releasing the coupling means. The trolley for transportation is characterized in that the trolley units of are detached to enable independent traveling. 2. A coupling means for coupling a pair of carriage units is composed of a first coupling mechanism provided at a front portion of the carriage unit and a second coupling mechanism provided at a rear portion of the carriage unit. The trolley for transportation according to claim 1. 3. A first coupling mechanism provided at a front part of a pair of bogie units, a first arm provided at a side end of a front part of one bogie unit, and the first arm. A second arm that is provided at the side end of the front portion of the other truck unit facing each other and that is superimposable on the first arm, and the first arm and the second arm that are superposed on each other. 3. The carrier truck according to claim 2, further comprising: a coupling pin that is detachably penetrated through both arms of the overlapping portion, and a connecting portion that is connectable to the carrier truck. 4. A second coupling mechanism provided at a rear portion of a pair of bogie units includes an arm provided at a side end of a rear portion of one bogie unit, and an arm provided at the other bogie unit facing the arm. A bracket provided at a lateral end of the rear portion, which is superposed with the arm, and a coupling pin which is provided through the arm and the bracket so as to be detachably attached to the superposed portion of the arm and the bracket which are superposed on each other; The carriage for transportation according to claim 2, comprising a connecting portion that can be connected to the carriage for transportation.