JPH07288903A - Truck carrier and truck carriage method - Google Patents

Abstract

PURPOSE:To make effective use of a floor space by lessening the occupied floor area by a truck carrier. CONSTITUTION:Two carry paths 5a and 5b, where trucks 8 driven by a motor travel, and guided by guide means are provided an interval apart in parallel, and a carry path 5c for connection is provided to connect both ends of these carry paths 5a and 5b, and also direction turning means 11 for turning the directions of trucks from the condition that the guide means engage with the carry paths 5a and 5b to the condition that it engage with the carry path 5c for connection are provided at both ends of the carry paths 5a and 5b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley transportation apparatus and a trolley transportation method for working while continuously moving a transported object.

[0002]

2. Description of the Related Art FIG.
It is a perspective view which shows the conventional trolley | bogie carrier apparatus shown by the 6th publication, and FIG. 11 is a top view of the same apparatus. In the figure, 1
Is an endless rail that is continuously provided in an annular shape with two rails,
Reference numeral 1a denotes a carriage in which the motor of the induction wireless device 1b is stopped and the reference numeral 2 denotes a conveyed object. Reference numeral 3 denotes an inter-vehicle distance detecting device, which is a transmitter 3a provided at the rear end of the trolley and is composed of, for example, an ultrasonic sensor, a receiver 3b provided at the front end, and a signal from the receiver. Inter-vehicle distance detection circuit 3 for detecting
It consists of c and.

Next, the operation will be described. When carrying an article 2 on a plurality of carriages 1a on the endless rail 1 and moving the articles 2 sequentially to perform an operation such as assembling, the inter-vehicle distance between the carriages 1a is received by the transmitter 3a. When the inter-vehicle distance is shortened to a predetermined set distance or less by the inter-vehicle distance detection circuit 3c through the guide wireless device 1b by the device 3b, the guide wireless device 1b issues a motor stop command to the succeeding vehicle 1a. Then, the rotation of the motor is stopped. As a result, when the vehicle-to-vehicle distance exceeds the set distance, the distance signal is detected by the vehicle-to-vehicle distance detection circuit 3c, the motor is rotated again according to the instruction from the guide wireless device 1b, and the trolley 1a stopped is operated. To start. Trolley 1a
In the operation of, the contact between the wheel of the carriage and the rail of the endless rail 1 is provided with a movement allowance in the width direction due to each manufacturing error and operation allowance. Heretofore, each transported object 2 has been placed on one carriage 1a and transported, and parts are attached at predetermined positions.

[0004]

Since the conventional trolley transportation device and trolley transportation method are configured as described above, the facing relationship between the adjacent trolleys changes at the curved portion, and the inter-vehicle distance detection device 3 detects the difference. It may go out of range and become undetectable. Therefore, there is a problem that it is necessary to increase the curvature of the curved portion and the occupied area of the endless rail increases. Further, when the transported object is long, there is a problem that it takes time to load and unload the special trolley according to the length.

As a prior art related to the present invention, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 59-179401.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a trolley carrier apparatus which can reduce the occupied floor area and can effectively utilize the space, and further one type of trolley. It is an object of the present invention to provide a trolley transportation method capable of handling long objects.

[0007]

According to a first aspect of the present invention, there is provided a carriage transporting apparatus in which two carriages are provided in parallel with each other so that a carriage driven by a motor is guided by guide means and travels. A communication transport path is provided so as to connect between both ends of the transport path, and both ends of the transport path are in a state in which the guide means is engaged with the transport path from the state in which the guide means is engaged with the transport path. The vehicle is provided with a direction changing means for changing the direction of the carriage.

According to a second aspect of the present invention, there is provided a trolley transporting apparatus, wherein the transporting path and the communication transporting path are constituted by an opening groove portion formed on the floor, and the guide means extends from the trolley to make a rolling contact with the opening groove portion. And a rolling portion of at least the wheel of the trolley,
It is made of a resin having elasticity.

According to a third aspect of the present invention, there is provided a trolley transporting apparatus, which has a current collecting trolley portion provided in a duct on the floor along the transport path, and a tip end side which extends from the trolley and is inserted into the duct. A power receiving insertion rod that has a terminal that is in electrical contact with the current collecting trolley portion and that supplies power to the motor is provided.

According to a fourth aspect of the present invention, there is provided a carriage transporting apparatus in which the guide insertion rod or the power receiving insertion rod is swingably supported so that it can be pulled up to the upper surface side of the carriage and fall down.

According to a fifth aspect of the present invention, there is provided a carriage transporting device provided with operation switching means for switching the driving state of the carriage to low speed, high speed and neutral.

According to a sixth aspect of the present invention, there is provided a carriage conveying device, wherein a wedge-shaped fixing rod is provided at one end in the traveling direction of the carriage, and the other end opposite to the fixing rod is fixed when the carriages come close to each other. An operating rod that slides on the rod and swings is provided, and swing detecting means that detects the swing of the operating rod and stops the motor is provided.

According to a seventh aspect of the present invention, there is provided a trolley carrier carrying apparatus, wherein the operating rod is raised in the traveling direction of the trolley to face the fixed rod, and the operating rod is tilted with respect to the traveling direction of the trolley. The holder is provided so as to be switchably held in a retracted position that does not come into contact with.

According to an eighth aspect of the present invention, there is provided a carriage transporting device in which the current collecting trolley portion is covered with a case having a lower opening groove portion into which the power receiving insertion rod is inserted.

According to a ninth aspect of the present invention, there is provided a carriage conveying apparatus, which is provided at both front and rear end portions of the carriage so as to be swingable in a traveling direction and which holds a conveyed object. Locking means for holding the tilted position tilted rearward and the upright position raised upright are provided.

The trolley transportation method according to the invention of claim 10 is
When carrying a long object using the carriage carrier, the carriages are arranged at intervals in a plurality of traveling directions,
The long objects are placed on these carts in a pedestal, and the carts in the front of the traveling direction are driven and driven, while the carts in the rear are driven.

[0017]

According to the trolley transporting apparatus of the first aspect of the invention, one side of the two-row transporting path can be used as the forward route of the trolley and the other side can be used as the return route, and the directional control means can easily transfer the trolley to each route. Therefore, it is possible to reduce the widthwise interval of the lines without changing the facing relationship between the trucks adjacent to each other in the transport path.

According to a second aspect of the invention, at least the rolling portion of the wheel is made of a resin having elasticity, and is guided along the conveying path by the guide insertion rod that makes rolling contact with the opening groove portion formed on the floor. Run silently.

According to a third aspect of the present invention, there is provided a trolley carrier apparatus.
Electric power is supplied to a motor for driving the truck by a current collecting trolley portion provided in a floor duct and a power receiving insertion rod provided so as to extend from the truck and making electrical contact with the current collecting trolley portion.

According to a fourth aspect of the present invention, there is provided a trolley carrier device.
The guide insertion rod or the power reception insertion rod can be pulled up to the upper surface side of the trolley and tilted.

According to a fifth aspect of the present invention, there is provided a carriage transporting apparatus,
The trolley can be operated at a low speed in the product transportation line of the two-row transportation path and at a high speed in the trolley recovery line, which can improve the efficiency of the assembly work and the like, and the motor drive can be appropriately set to the neutral state for manual operation. You can easily.

When the trucks come close to each other, the actuating rods are slidably brought into contact with the fixed rods and swung, and the swing detecting means stops the motor of the truck by receiving the swing of the actuating rods. It becomes possible to adjust the mechanical distance between the carriages.

The actuating rod according to the invention of claim 7 has an actuating posture in which it rises in the traveling direction of the carriage and faces the fixed rod, and a retracting posture in which it falls against the traveling direction of the truck and does not come into contact with the fixed rod. Since it can be switched to, the dolly can be placed very close to each other for storage.

In the current collecting trolley part of the invention of claim 8, since the lower opening groove part into which the power receiving insertion rod is inserted is covered with the case formed on the lower surface side, dust can be prevented from entering and the electric conductor can be prevented. It enables reliable protection of parts.

According to a ninth aspect of the present invention, there is provided a trolley carrier apparatus.
Since the carrier holders were installed in front of and behind the carriage so that the swing position could be changed in the direction of travel, the holding position could be changed to a long or short distance according to the length of the carrier, and the carrier was lifted high on the carriage. Can be kept in a state.

In the trolley transportation method according to the tenth aspect of the invention, since the front and rear portions of the long transportation object can be placed on the front and rear trolleys and used as a set of a plurality of transportation objects, transportation objects of several kinds of length can be used. Even if there is one, it can be handled with one type of trolley.

[0027]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a carriage carrier according to an embodiment of the invention of claims 1 to 4, and FIGS. 2 to 3 are side sectional views showing the same. The same members as those of the conventional carriage transfer device shown in FIGS. 10 to 11 will be designated by the same reference numerals and the description thereof will be omitted. In FIG. 1, 4 is an end duct which is provided under the floor along the ground surface with a predetermined width interval in parallel and in two rows in a predetermined length. 4 a and 4 b are current collectors housed in these ducts 4, respectively. Trolley part, 5a, 5
b is a conveying path constituted by each duct 4 and an opening groove portion 6 to be described later, 5c is constituted by an opening groove portion 6a formed on the floor surface, and is a communication conveying path for connecting between both ends of the conveying paths 5a, 5b, Reference numeral 6 denotes an opening groove portion formed on the floor along the duct 4 so as to communicate with the duct 4, and 7 denotes a current collecting trolley portion 4a, 4b at a tip portion that can be inserted into the duct 4 through the opening groove portion 6.
A power receiving insertion rod having a terminal slidably contacting with a rail 8 is driven by a motor 8a with a reduction gear (not shown) and runs silently on rubber wheels 9 (railway truck) 10 is in rolling contact with the opening groove 6 or the opening groove 6a. For example, guide insertion rods (guide means) 10 and 11 having a ball bearing mounted at the tip end thereof to guide the travel of the trackless carriage 8 are, for example, motors with reduction gears (not shown), which are turntables in which the upper plate rotates horizontally. It is a conversion means.

Here, the direction changing means 11 is provided at both ends of the current collecting trolley parts 4a, 4b (conveyance paths 5a, 5b), and the upper plate is provided with the opening groove part 6 or a groove similar to the opening groove part 6a. A rectangular and linear transport path is formed. Further, the power receiving insertion rod 7 and the guide insertion rod 10 are arranged so as to be lined up in the traveling direction in each of the railless trucks 8 and are attached so as to extend from the lower surface of the railless truck 8 into the floor. The guide insertion rods 10 are provided on the front portion and the rear portion of the trackless truck 8, respectively.

Next, the operation will be described. Trackless carriage 8
Is received from the current collecting trolley part 4a by the power receiving part of the power receiving insertion rod 7 inserted into the opening groove part 6 on the surface of the transport path 5a, driven by the deceleration motor (not shown), and the transport object 2 is placed and travels. . The guide insertion rods 10 mounted on the front and rear portions of the trackless truck 8 in the traveling direction are inserted into the opening groove portion 6 and do not meander the trackless truck 8 while rolling contact with the ball bearing at the tip portion. Drive straight. This allows
Power reception between the power collection trolley parts 4a and 4b and the power receiving insertion rod 7 is stable, and transmission and reception of ultrasonic signals between the transmitter 3a and the receiver 3b are ensured, and the inter-vehicle distance detecting device 3c operates accurately. To do.

For this reason, the railless truck 8 on which the work such as mounting parts on the article 2 has been completed on the carrying path 5a is manually pushed by the worker onto the direction changing means 11 at the carry-out end, and the direction changing means 11 is moved. Rotate 90 degrees and push it by hand to connect and convey path 6a
After traveling, the vehicle is placed on the direction changing means 11 at the carry-in end of the transport path 5b, rotated 90 degrees and moved to the transport path 5b, and the power is received by the power receiving insertion rod 7 from the current collecting trolley section 4b. A simple work of automatically running the trackless truck 8 and suspending the transported article 2 by a crane (not shown) to recover the empty railwayless truck 8 is carried out, and while sequentially transporting the transported article 2, a predetermined component mounting operation is performed. Etc. can be performed efficiently.

With the above-mentioned carriage transport device, even if the length of the communication transport path 5c is shortened, in the portions (transport paths 5a, 5b) where the transported object automatically travels, the trackless trucks adjacent to each other in the front and rear direction. Since the facing relationship of 8 does not change, the two rows of conveyance paths 5a,
The interval of 5b (that is, the length of the communication transport path) can be shortened to the minimum distance, and the occupied area can be reduced.

Further, unlike the conventional rail type bogie, since the railless bogie 8 traveling by the rubber wheels 9 is used, silent traveling is possible and a good working environment can be provided. Furthermore, since power is supplied to the trackless trucks 8 by the current collecting trolley parts 4a and 4b and the power receiving insertion rod 7, it is not necessary to mount a battery or the like on each of the trackless trucks 8 and a common power source can be used. There is also an effect that the rail carriage 8 can be automatically driven.

The power receiving insertion rod 7 and the guide insertion rod 10 may be fixed to the railless carriage 8, but in this case, they are also connected to the communication conveying path 5c and the direction changing means 11. It is essential to provide a duct through which the power receiving insertion rod 7 passes, and the trackless truck 8 cannot be moved independently of the transport paths 5a and 5b. Therefore, the power receiving insertion rod 7 and the guide insertion rod 10 are swingably attached to the trackless carriage 8 so that they can be pulled up and tilted to the upper surface side of the trackless carriage 8, and the transport path is also provided. 5a, 5b
Relief (such as a notch or slit formed in the current collecting trolley parts 4a and 4b and the duct 4) so that interference does not occur when pulling up the power receiving insertion rod 7 etc. Is preferably provided. With such a configuration, it is possible to appropriately pull up the power receiving insertion rod 7 or the like to move the trackless carriage 8 to a position unrelated to the transport paths 5a and 5b (to remove the trackless carriage 8 from the line). You can easily.

Example 2. Next, an embodiment of the invention of claim 5 will be described with reference to FIG. The same members as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.
In FIG. 4, reference numeral 18 denotes operation switching means provided on the trackless carriage 8 (in this case, the motor of the trackless carriage 8 is included).
Then, the drive state of the trackless carriage 8 is switched to three stages of low speed, high speed, and neutral. Specifically, the operation switching means is composed of, for example, a pole number conversion induction motor, a speed reducer, an electromagnetic clutch, etc., and rotates the pole number conversion induction motor at a high speed or a low speed at a low speed or a high speed instruction, and at a neutral instruction. The electromagnetic clutch is opened.
Here, a specific speed of low speed or high speed is, for example, 7
m / Hr and high speed are set to 55 m / Hr.

Next, the operation will be described. According to the cart carrier of this embodiment, for example, about 7 m in the carrier path 5a.
It operates at a low speed of / Hr to facilitate the work of attaching parts to the article 2 and the like.
It is possible to operate at a high speed of Hr and quickly recover the empty carriage 8 to improve work efficiency. That is, for example, the transport path 5
A plurality of workers are arranged at a, and the trackless carriage 8 is slowly moved to attach different parts to each other. At the end of the transport path 5b, one worker is loading work 2 (product). In order to efficiently perform such tasks as other tasks (such as the task of adjusting the product at the time of loading), the trackless carriage 8 can be made to travel fast on the transport path 5b.
Further, in the communication transport path 5c, the trackless carriage 8 can be easily pushed and moved by simply pushing the neutral non-powered state and lightly pushing, and a crane or the like is also used when the trackless carriage 8 is detached from the line. It can be operated by hand without any operation. Needless to say, the specific speeds of the high and low speeds of the operation switching means 18 can be set to desired speeds in accordance with the time of parts mounting work.

Example 3. Next, an embodiment of the inventions of claims 6 to 7 will be described with reference to FIGS. In the figure, 20 is a distance sensor 21 which will be described later, or collision prevention means composed of a fixed rod 22, an actuating rod 23, etc., 21 is a non-contact distance sensor based on, for example, a signal radio wave, and 22 is horizontally behind the traveling direction of the carriage 8. A fixed rod that is provided so as to project and has a wedge-shaped projecting portion and an inclined lower surface, 23 is an L-shaped actuating rod that is provided at a position facing the fixed rod 22, and 24 is a vertical direction of the actuating rod 23. A holder for instructing easy sliding in the direction of right and left, a direction switching device 25 for moving the actuating rod 23 manually into an operating position shown by a solid line in FIG. 6 and a retracted position shown by a chain line in FIG. Holder 24
Is an elastic member that holds the front end of the bogie 8 in the traveling direction so that it can be swung in the front-rear direction, and 27 is a swing switch including a limit switch that is actuated by pushing the actuating rod 23 and the holder 24 backward. A detection device (rocking detection means) stops the motor of the trackless carriage 8 by its operation. The distance sensor 21 has the same function as the inter-vehicle distance detecting device 3.

Next, the operation will be described. In the trolley carrier, the distance sensor 21 performs the same non-contact type inter-vehicle distance automatic adjustment as in the conventional case, and the fixed rod 2
2. The inter-vehicle distance is automatically adjusted mechanically by contact with the operating rod 23. That is, the carriage 8 on the transport path 5a has the fixed rod 22 and the operating rod 23, and continuously runs at a predetermined interval. For example, if the drive motor of one trolley 8 fails and the operation is stopped, first, the distance sensor 21 detects the approach to the following trolley 8 and the operation of the following trolley 8 is stopped. Even if this function does not work, the operating rod 23 of the succeeding truck 8 contacts the fixed rod 22 of the preceding truck 8 and the operating rod 23 inclines downward along the slope of the fixed rod 22. The lower end of 24 swings rearward and the swing detection device 27 operates to open the electric circuit of the drive motor to stop the driving of the succeeding carriage 8. In this state, the fixed rod 22 and the actuating rod 23 are kept in contact with each other, and the inter-carriage distance is mechanically maintained even if the subsequent motor is not stopped due to some abnormality. As described above, the collision prevention means 20 prevents the conveyed objects from colliding with each other and being damaged by the three kinds of operations with extremely high reliability.

The actuating rod 23 is normally in the actuating position shown by the solid line in FIG. 6 and is in a protruding state, but it is slid upward by the direction switching device 25 and pulled up to rotate laterally by 90 degrees. However, it can be held in the retracted posture shown by the chain line in FIG. Therefore, when the empty cart 8 is connected and stored, or when the cart is operated by pushing manually, the projecting state can be released so that the operating rod 23 does not get in the way.

Although the fixing rod 22 and the actuating rod 23 of the collision prevention means 20 are provided on the surface of the truck 8 in the above embodiment, the truck 8 can be inserted into the opening groove 6 of the underfloor duct 4. It may be provided so as to project at the lower part of the ground, so that there is no projecting portion on the ground surface, and workers can walk safely even when passing between vehicles. Further, when the carriage 8 is separated from the transport path 5a, the fixed rod 22 and the operating rod 23 can be pulled up from the opening groove portion 6 and held.

Example 4. Next, an embodiment of the invention of claim 8 will be described with reference to FIG. In the figure, 36 is a current collecting trolley part which is housed in a duct 4 provided under the floor along the surface of the ground and is covered with a case 36 a having a lower opening groove part 37, and 38 is a moving means for operation inserted in the lower opening groove part 37. The lower opening groove portion 37 is moved while transferring to the lower opening groove portion 37, for example, via a bearing. Numeral 39 is a power receiving unit provided on the upper part of the transportation means 38, and numeral 40 is a trolley
One end of which is easily pivoted in the vertical direction, and the free end of the other end is inserted into the opening groove 6 and hangs down. 41 is a position holding means composed of a compression spring, which is a movement holding means of the movement moving means 38. The lower part is inserted and held horizontally at the free end of the insertion rod 40. The insertion rod 40 functions as a power reception insertion rod and a guide insertion rod of the present invention, and is swingable with respect to the trackless carriage 8 so that it can be pulled up and tilted to the upper surface side of the trackless carriage 8. Installed. In addition, the transport paths 5a, 5
At the end of b, etc., escape so as not to cause interference when pulling up the insertion rod 40 (current collecting trolley part 36
Or notches or slits formed in the duct 4 or the like).

Next, the operation will be described. The drive motor of the truck 8 is driven by the lower opening groove portion 3 of the current collecting trolley portion 36.
The power receiving unit 39 provided at the upper portion of the operation moving unit 38 which is rolled and held at 7 receives the power and continues the operation while moving. At this time, even if the carriage 8 meanders to some extent in the traveling direction, the position holding means 41 maintains the power receiving position of the traveling means 38 without any trouble. Then, the current collecting trolley unit 36 is attached to the case 3
Since it is covered with 6a, dust can be prevented from entering and the electric conductor portion can be protected with high reliability.

Example 5. Next, an embodiment of the invention of claim 9 will be described with reference to FIG. In the figure, reference numeral 45 denotes a transported object holder, which is held at a free end portion of a semi-rotating support plate 46, one end of which is easily pivoted on the carriage 8. The transported object holder 45 has half-rotation support plates 4 at both ends along the width direction of the carriage 8.
6 is held by 6 and is placed on the upper surface of the dolly 8 along the length direction (traveling direction) of the dolly at positions A and C (tilting position) shown in the drawing, and the half-turn support plate 46 is made vertical. When locked by the locking means 47 composed of a locking pin and a hole, it is held high as shown in position B (upright position) in the figure.

According to this cart carrier, the position of the carrier holder 45 is placed on A, A or C, C shown in the figure according to the length of the carrier 2, and the carrier holder 45 is projected on the lower surface of the carrier 2. When there is an object or when a component or the like is attached to the lower surface of the conveyed object 2, it can be dealt with by holding it high at the positions B and B in the drawing.

Example 6. Next, an embodiment of the invention of claim 10 will be described with reference to FIG. The trolley transportation method of this embodiment is such that two railless trolleys 8A, 8B adjacent to each other in the traveling direction are used.
The long conveyed goods 2 are put on the pedestal with a predetermined space therebetween, and the carriage 8A in the front of the traveling direction drives and the carriage 8B in the rear is driven to be neutral. 2
The trolleys 8A and 8B for the pedestals are the same as the trolleys 8 of the above-described embodiment, and can be dealt with by using one type of trolley 8 at a predetermined interval depending on the length of the long transport object 2.

[0045]

As described above, according to the first aspect of the present invention, the carriages driven by the motors are provided with the conveying paths guided by the guide means so as to be parallel to each other in two rows. A communication carrying path is provided so as to connect the both ends, and the carriage is provided at both ends of the carrying path from a state where the guide means is engaged with the carrying path to a state where the guiding means is engaged with the communicating carrying path. Since the structure is provided with the direction changing means for changing the direction of the carriage, one side of the two-row conveying path can be used as the forward path of the truck and the other side can be used as the return path, and the truck can be easily switched to each route by the direction changing means. Therefore, there is an effect that the interval in the width direction of the route can be made small and the place can be effectively used without changing the facing relationship between the adjacent carts on the transport path.

According to the second aspect of the present invention, the conveying path and the connecting conveying path are formed by an opening groove portion formed on the floor, and the guide means extends from the trolley to make a rolling contact with the opening groove portion. Since the carriage is constructed of a rod and at least the rolling portions of the wheels of the truck are made of a resin having elasticity, the truck can run silently along the conveying path, so that a quiet working environment can be obtained.

According to the third aspect of the present invention, the current collecting trolley portion is provided in the duct on the floor along the conveying path, and the current collecting trolley is extended from the carriage to be inserted into the duct. Since the power receiving insertion rod for supplying electric power to the motor is provided with a terminal that makes electrical contact with the section, it is not necessary to mount a battery or the like on each trolley, and a plurality of trolleys can be driven by a common power source. It has the effect that it can be driven automatically.

According to the fourth aspect of the present invention, the guide insertion rod or the power receiving insertion rod is swingably supported so that it can be pulled up to the upper surface side of the trolley and fall down. There is an effect that it is possible to easily pull up the insertion rod and move the carriage to a position irrelevant to the transport path (remove the carriage from the line).

According to the invention of claim 5, the operation switching means for switching the driving state of the carriage to the low speed, the high speed and the neutral is provided. It can be operated and can be operated at high speed in the truck recovery line, and the efficiency of assembly work can be improved, and the motor drive can be appropriately set to the neutral state to facilitate manual operation.

According to the invention of claim 6, a wedge-shaped fixing rod is provided at one end in the traveling direction of the carriage, and the other end opposite to the fixing rod is slidably contacted with the fixing rod when the carriages come close to each other. In addition to providing an operating rod that swings, the swing detecting means for detecting the swing of the operating rod and stopping the motor is provided, so that the inter-vehicle distance adjustment between bogies is mechanically highly reliable. It has the effect of being able to perform.

According to the seventh aspect of the invention, the operating rod has an operating posture in which it rises in the traveling direction of the truck and faces the fixed rod, and the operating rod does not come into contact with the fixed rod by tilting with respect to the traveling direction of the truck. Since it is configured to provide a retainer that can be switched to the retracted posture, when the empty truck is connected and stored, or when the truck is operated manually, the protruding state is released and the operating rod interferes. There is an effect that it can be prevented.

According to the invention of claim 8, since the current collecting trolley portion is covered with a case in which the lower opening groove portion into which the power receiving insertion rod is inserted is formed on the lower surface side, dust is prevented from entering. It is possible to prevent the electric conductor portion from being highly reliable and protect the electric conductor portion.

According to a ninth aspect of the present invention, at the front and rear ends of the carriage, there are provided carrier holders for carrying a carrier so as to be swingable in the traveling direction, and the carrier holders are tilted forward or backward. Since the locking means for holding the tilted position and the upright position that is raised upright is provided, the holding position can be changed to a long or short distance according to the length of the conveyed object and the conveyed object can be lifted high on the carriage. As a result, there is an effect that the work of attaching the parts and the like to the lower surface of the conveyed product can be facilitated.

According to the tenth aspect of the present invention, when the long conveyance object is conveyed by using the carriage conveyance device, the carriages are arranged at intervals in a plurality of operation directions, and the long conveyances are carried on the carriages. Since the object is placed on a pedestal and driven by the trolley in front of the traveling direction and the trolley in the rear is driven as a follower, the front and rear parts of the long object are placed on the front and rear trolleys. Since a plurality of carriages can be used as one set, there is an effect that even if there are several kinds of conveyed goods, one kind of carriage can be used.

[Brief description of drawings]

FIG. 1 is a plan view showing a carriage carrier according to an embodiment of the inventions of claims 1 to 4. FIG.

FIG. 2 is a cross-sectional view showing a carriage carrier according to an embodiment of the inventions of claims 1 to 4.

FIG. 3 is a cross-sectional view showing a carriage carrier according to an embodiment of the inventions of claims 1 to 4.

FIG. 4 is a diagram for explaining a carriage transport device according to an embodiment of the invention of claim 5;

FIG. 5 is a side view showing a carriage carrier according to an embodiment of the inventions of claims 6 to 7.

FIG. 6 is a plan view of a main part showing a carriage transport device according to an embodiment of the inventions of claims 6 to 7;

FIG. 7 is a sectional view showing a carriage carrier according to an embodiment of the present invention.

FIG. 8 is a side view showing a carriage carrier according to an embodiment of the present invention.

FIG. 9 is a side view showing a carriage transport method according to an embodiment of the invention of claim 10;

FIG. 10 is a perspective view showing a conventional carriage transportation apparatus and a carriage transportation method.

FIG. 11 is a plan view showing a conventional carriage transport device.

[Explanation of symbols]

2 items to be conveyed, 4 ducts, 4a, 4b collecting trolley part, 5a, 5b conveying route, 5c connecting conveying route, 6, 6
a opening groove portion, 7 power receiving insertion rod, 8, 8A, 8B trackless carriage (carriage), 10 guide insertion rod (guide means), 11 direction changing means, 18 operation switching means, 22
Fixed rod, 23 Actuating rod, 24 Holding tool, 27 Swing detection device (swing detection means), 36 Current collecting trolley part, 36
a case, 37 lower opening groove portion, 40 insertion rod (power receiving insertion rod, guide insertion rod), 45 transported object holder, 47
Locking means.

Claims (10)

[Claims] 1. A plurality of carriages on which a conveyed object can be placed and which is driven by a motor and two floors on which the carriages travel are spaced apart from each other.
A conveyance path provided in parallel with each other, a communication conveyance path formed on the floor so as to communicate between both ends of the conveyance path, and the communication conveyance path and the conveyance path movably engaged with each other. Guide means for guiding the travel of the carriage, and provided at both ends of the transport path, change the direction of the carriage from a state where the guide means engages the transport path to a state where the guide means engages the communication transport path. A trolley carrier device provided with a direction changing means. 2. The transport path and the communication transport path are formed by an opening groove portion formed on a floor on which the carriage travels, and the guide means is provided so as to extend from the carriage and is in rolling contact with the opening groove portion. 2. The trolley transport apparatus according to claim 1, wherein the trolley carrier is configured by a guide insertion rod, and at least rolling portions of wheels of the trolley are configured by a resin having elasticity. 3. A current collecting trolley portion provided in a duct on a floor along which the truck runs along the transport path, and the collector trolley portion provided so as to extend from the truck and inserted into the duct. 3. A power receiving insertion rod that has a terminal that makes electrical contact with an electric trolley portion and supplies electric power to the motor.
The trolley carrier device according to the item. 4. The guide insertion rod or the power receiving insertion rod is swingably supported with respect to the carriage so that the guide insertion rod or the power reception insertion rod can be pulled up to the upper surface side of the carriage and tilted. A carriage transport apparatus according to any one of claims 1 to 3. 5. The trolley carrier according to any one of claims 1 to 4, further comprising operation switching means for switching a driving state of the trolley to a low speed, a high speed and a neutral state. 6. A wedge-shaped fixed rod provided at one end in the traveling direction of the dolly and another end opposite to the fixed rod, and when the dolly comes close to each other, the fixed rod slides into contact with the fixed rod and swings. 6. The trolley carrier according to claim 1, further comprising: a moving operating rod; and a swing detecting means for detecting a swing of the operating rod to stop the motor. apparatus. 7. The operating rod is switched between an operating posture in which it rises in the traveling direction of the carriage and faces the fixed rod, and a retracted posture in which it falls down in the traveling direction of the truck and does not contact the fixed rod. 7. The trolley carrier according to claim 6, further comprising a holding tool that holds the dolly. 8. The current collecting trolley part is covered with a case in which a lower opening groove part into which the power receiving insertion rod is inserted is formed on a lower surface side. The trolley carrier according to any one of the above. 9. A carrier holder for carrying a carrier is provided at both front and rear ends of the carriage so as to be swingable in a traveling direction, and the carrier holder stands upright at a tilted position tilted forward or backward. 9. The trolley carrier apparatus according to claim 1, further comprising locking means for holding the erected position in an upright position. 10. When carrying a long object by using the carriage carrier according to any one of claims 1 to 9, the carriages are arranged at intervals in a plurality of traveling directions, A trolley-carrying method, characterized in that the long object is placed on a dolly and placed on the dolly, the dolly in front of the running direction drives the vehicle, and the dolly in the rear direction is driven.