JP5367435B2 - Traveling equipment and traveling method of transport cart - Google Patents

Description

  The present invention relates to a traveling facility and a traveling method for a transportation carriage that changes a line or changes direction of a transportation carriage on which an object is to be transported, and travels over a long distance while performing a predetermined operation in an intermediate process. The present invention relates to a traveling facility and a traveling method for a transport carriage that drives a motor while replacing a power plug of a cable mounted on the transport carriage with respect to power feeding sockets provided at a plurality of locations during traveling.

  In manufacturing or inspection (maintenance) of a vehicle body in a railway vehicle, the vehicle body placed on a carriage along a manufacturing or inspection line of several hundred meters is sequentially conveyed through each process. FIG. 6 is a plan view schematically showing a part of such a production line. The production line of several hundred meters in the factory is not configured in a straight line. Accordingly, a plurality of parallel straight conveyance paths are provided in the factory, and the course indicated by the arrow moves using the traverser or the rotary table while changing the direction of the conveyance carriage 100 on which the vehicle body is mounted. A plurality of vehicle bodies mounted on the transport carriage are simultaneously moved on such a production line, and each operation is performed in each process.

  The transport cart here is a temporary cart that runs on rails laid in the factory with the vehicle body mounted, and two vehicles are arranged in the front and rear with respect to one vehicle body, one of which is a self-propelled with a drive motor The other type is a support conveyance cart having no driving means. Self-propelled transport carts use a battery-powered trolley system that uses a trolley wire wired in the factory or a cable reel cable mounted on the cart as a power supply. There is a cable reel type to connect.

JP 2002-97510 A

  For example, in a railroad vehicle manufacturing factory, 16 hours of continuous operation may be performed, and during that time, the transport carriage continues to transport the vehicle body through a plurality of work processes on the production line. Therefore, in order to enable the transport cart to run for a long time of 16 hours, a large battery is required, and a large capacity and a large space are required, making it difficult to mount on the transport cart. Moreover, even if it can be installed, the cost becomes high. On the other hand, if a small battery needs to be replaced, and if the transport carriage is stopped along with the replacement, for example, 10 vehicles are moving simultaneously on one production line. Therefore, the subsequent work is stopped, and the production efficiency is remarkably lowered.

  In addition, the trolley type will install fixed objects such as a power supply trolley protruding from the floor of the factory, and there are places on the production line where workers and other transport machines enter. Therefore, it is not appropriate. In the cable reel type, a cable mounted on a self-propelled transport carriage is connected to the power supply side, and a cable wound with movement is sent out. However, this can be used if it is a linear reciprocating movement, but is not possible on a production line that changes the course.

  Accordingly, an object of the present invention is to provide a traveling facility and a traveling method for a transport carriage that enables traveling while changing the course of the transport carriage on which the cable reel is mounted in order to solve such a problem.

A traveling facility for a transport cart according to the present invention travels a self-propelled transport cart including a drive motor, a control device, and a cable reel according to a set transport course, and is placed on the transport vehicle. In the traveling facility of the transport carriage for sequentially transporting the object to be manufactured to a plurality of process work places, a power feeding socket for connecting a power plug at the end of the cable extending from the cable reel is provided. In a state where a plurality of objects corresponding to the length of the cable are installed on the traveling course to be traveled , and the object that has finished the process work at the first process work place is placed, when moving to step workplace, and characterized in that, for changing connect the first the power plug that was plugged into the socket of the first step workplace, the second socket of the second step workshop That.

Moreover, the traveling equipment for the transport cart according to the present invention is such that the transport cart travels on two parallel rails laid on the floor along the transport course, and the socket includes the rail It is preferable that it is provided between.
Further, in the traveling equipment for the transport carriage according to the present invention, the rail is installed in a track groove formed in the floor, and the socket is provided in a space with a lid formed under the floor. Preferably there is.
Further, in the traveling equipment for the transport carriage according to the present invention, a cable stopper is attached to the tip of the cable, and an engagement member for engaging the cable stopper is provided at each position where the socket is installed. It is preferable that

Further, the traveling equipment of the transport carriage according to the present invention includes a counter for measuring the cable feed amount by the cable reel, and the control device outputs a stop signal from the counter that detects the cable feed limit length. It is preferable that the transfer carriage is forcibly stopped upon receipt.
Further, in the traveling equipment for the transport carriage according to the present invention, the cable reel can automatically wind the cable by a spring member, and the cable is prevented from being excessively wound from a tip to a predetermined position. It is preferable that a roll-in preventing stopper is provided.
Moreover, it is preferable that the traveling equipment of the conveyance trolley | bogie which concerns on this invention is what the said cable reel attached the rotation handle to the drum which winds up a cable.
Moreover, it is preferable that the traveling equipment of the conveyance trolley | bogie which concerns on this invention has the rotation prevention stopper which restrict | limits the rotation of the drum which the said cable reel winds up a cable.

On the other hand, in the traveling method of the transport carriage according to the present invention, the self-propelled transport carriage including the drive motor, the control device, and the cable reel is connected to the power supply socket with the power plug of the cable extending from the cable reel, Accordingly, the power is supplied to the drive motor and the control device to travel according to the set transfer course, and the object placed on the transfer vehicle is sequentially transferred to a plurality of process work places for manufacturing. In the traveling method of the transport carriage for performing, the socket is installed at a plurality of locations on the transport course on which the transport cart travels, and the power plug is replaced with respect to the socket at a location corresponding to the travel position of the transport cart. while repeating the work, thereby driving the conveyance carriage, in a state of mounting the object having been subjected to the process work in a first step the workplace, second Engineering When moving to the workplace, the first said power plug that was plugged into the socket of the first step workplace, changing connecting to the second socket of the second step workplace, characterized by.

  Therefore, according to the present invention, since a plurality of power supply sockets are provided on the transport course on which the self-propelled transport cart travels, the power plug of the cable is sequentially connected to the socket in the travel direction for every constant travel of the transport cart. By changing to, the driving motor can be operated to move the conveyance course. At that time, on the traverser or the rotary table, it is possible to freely change the course or change the direction by winding the cable with the power plug removed.

It is the side view which showed the state which the conveyance trolley carrying a vehicle body (base frame) drive | works a manufacturing line. It is the figure which showed the self-propelled conveyance cart from the back with the floor structure of a factory. It is the figure which showed the inside of the power supply pit from the side with respect to the advancing direction. It is the side view which showed the cable reel. It is the front view which showed the cable reel. It is the top view which simplified and showed a part of manufacturing line.

  Next, an embodiment of traveling equipment and a traveling method for a transport carriage according to the present invention will be described below with reference to the drawings. The traveling equipment for the transport cart according to the embodiment constitutes a production line for a railway vehicle as shown in FIG. 6, and the transport cart mounted with the body of the rail car travels along a rail laid in the factory. It is what I did. FIG. 1 is a side view showing a state in which a transport carriage carrying a vehicle body (underframe) travels on a production line.

  The vehicle body 1 is mounted on the two transport carriages 2 and 3 arranged at the front and rear, and moves along the production line in the direction indicated by the arrow F. In this case, a self-propelled conveyance carriage 3 having a drive motor is disposed at the rear in the advancing direction in order to improve the connection workability of the power plug, and the support conveyance carriage 2 having no front driving means is pushed by driving from the rear. Thus, the vehicle body 1 is moved. However, although the connection workability of the power plug is reduced, it is possible to reverse the positions of the support conveyance carriage 2 and the self-propelled conveyance carriage 3 back and forth.

  The transport carts 2 and 3 are configured such that the front and rear wheels 12 of the cart frame 11 roll on rails laid in the factory. FIG. 2 is a view showing the self-propelled conveyance cart 3 from the rear along with the floor structure of the factory. The two parallel rails 4 are respectively laid in raceway grooves 5a formed on the floor 5 of the factory, and the top surfaces of the rails 4 are substantially the same height as the floor surface. This is so that other transporting machines traveling in the factory can cross the production line without the operator getting caught. In the transport carts 2 and 3, a support base 13 protrudes in the center in the longitudinal direction of the cart frame 11, and as shown in FIG. 2, support receivers 14 that directly support the vehicle body 1 are formed at the center portion and the left and right sides. ing. The vehicle body 1 is mounted and moved on the support receivers 14 before and after the transport carriages 2 and 3.

  The rear self-propelled transport carriage 3 includes a control box 16 in which a control board having a drive motor 15 and an electric control device is placed on the carriage frame 11, a cable reel for supplying power to the drive motor 15 and the control board. 17 is mounted. The cable reel 17 is wound with a cable 18 having a power plug 19 at the tip. In the cable reel 17, a cable 18 that can be fed out, for example, 40 meters long is wound, and the cable 18 extends as the self-propelled transport carriage 3 moves. The fed cable 18 is naturally wound by the tension of the spring member acting on the reel unless a force is applied in the feeding direction.

  The self-propelled transport cart 3 can be driven by driving the drive motor 15 by connecting the power plug 19 to the power supply socket 21, and its travel range is a length of 40 meters from which the cable 18 can be sent. It will be. Therefore, in order to move a production line of several hundred meters to the self-propelled conveyance carriage 3, a plurality of sockets 21 for connecting the cable 18 are provided in the production line of this embodiment. In particular, the socket 21 is located between the left and right rails 4 on which the self-propelled conveyance carriage 3 travels so as not to step on the cable 18 with the wheels of the own carriage and the following carriage, and in the power pit 22 formed below the floor 5. Is formed. FIG. 3 is a view showing the inside of the power pit 22 from the side with respect to the traveling direction.

  A power supply pit 22 in which a box is embedded in a recess formed on the floor 5 of the factory has a lid 23 that can be opened and closed on the upper surface. In the power pit 22 shown in FIG. 3, the arrow F direction is the traveling direction of the transport carriages 2 and 3, and the lid 23 is attached by a hinge so that the traveling direction side is opened. Usually, when the lid 23 is closed and there is a self-propelled transport cart 3 traveling on the production line that moves within the area in charge, the lid 23 is opened and the power plug 19 of the cable 18 is connected to the internal socket 21. Connected to. The socket 21 is provided at a corner in the power pit 22 with its connecting portion facing the traveling direction.

  If the self-propelled transport cart 3 travels with the power plug 19 connected to the socket 21, the cable 18 is sent out from the cable reel 17 as the distance increases. At this time, a stopper for fixing the cable 18 in the power pit 22 is provided so that the power plug 19 is not detached by being pulled by the traveling self-propelled transport carriage 3. A curved guide plate 24 for smoothly guiding the cable 18 to the floor surface is formed on the traveling direction side in the power pit 22, and a hook 25 is attached to a lower position thereof.

  On the other hand, a cable stopper 26 that is hooked on a hook 25 in the power pit 22 is attached to the cable 18. The cable stopper 26 is integrally formed with a cylindrical net portion 26 a that covers the cable 18 and an annular clip 26 b that is hooked to the hook 25 at the tip. In the cable stopper 26, the net portion 26a is not fixed to the cable 18, and the position can be adjusted. The cable 26 can be gripped so that the cable 18 does not slip by contracting when the clip 26b is pulled. Is. Accordingly, the cable stopper 26 that hooks the cable 18 in the direction of the arrow F is received by the hook 25 so that the power plug 19 is not pulled.

  Next, since the power plug 19 at the tip of the cable 18 cannot be removed by such a cable stopper 26, if the self-propelled transport carriage 3 accidentally travels a distance longer than the length of the cable 18, the cable 18 Or the cable reel 17 or the power pit 22 may be damaged. Therefore, the self-propelled conveyance cart 3 has a configuration for restricting traveling. 4 and 5 are a side view and a front view showing the cable reel, and particularly FIG. 4 is a right side view of FIG.

  In the cable reel 17, the cable 18 is wound around a rotatable drum 31 placed in a case 17 a shown in FIG. 1, and a counter 32 that measures the absolute delivery amount of the cable 18 from the number of rotations of the drum 31. It is attached. The counter 32 is configured to send a stop signal to the control panel when the sending limit length (for example, 40 meters) of the cable 18 is set and the value is detected. Then, the control panel is set to forcibly stop the self-propelled conveyance cart 3 in response to the stop signal.

  Next, the cable reel 17 is configured so that a cable 18 can be automatically wound by a force acting on the drum 31 in the winding direction by the tension of a spring (not shown). Therefore, when the cable stopper 26 is removed and the tip becomes free, the cable 18 is automatically wound around the rotating drum 31. However, the fed cable 18 is in contact with the floor 5, and if the frictional resistance is large, automatic winding may not be possible with the tension of the spring. Therefore, the cable reel 17 is provided with a handle 33 attached to the drum 31 so that the cable 18 can be manually wound.

  Therefore, if the handle 33 is used, even if manual winding is necessary at the beginning, the cable 18 is shortened so that the frictional resistance is reduced. It is wound up by. As the winding of the cable 18 progresses and becomes shorter, the frictional resistance with the floor 5 becomes smaller, and finally the cable 18 is wound up vigorously. Therefore, as shown in FIG. 3, the cable 18 is fixed with a disk-shaped winding prevention stopper 34 made of a rubber material at a predetermined position from the tip, and the winding prevention stopper 34 is caught on the cable reel 17 side. An excessive winding of the cable 18 is prevented.

  If it is assumed that the cable 18 is to be sent out with the tip free, it is necessary to limit the automatic winding of the cable reel 17 by the spring. Therefore, mounting holes 31a are formed at four locations on the side surface of the drum 31, and rod-like stoppers 35 to be inserted there are prepared. As shown in FIG. 5, the rotation prevention stopper 35 protruding from the side surface of the drum 31 hits the support base 36 of the cable reel 17 from the rotation direction of the drum 31 (counterclockwise direction in FIG. 4). Limit take. The rotation prevention stopper 35 is connected to the support base 36 by a chain.

  Note that the automatic winding of the cable 18 by the cable reel 17 changes the frictional resistance depending on the surface finish of the floor 5 and the weight of the cable 18, and also selects the spring that rotates the drum 31 or changes the initial number of turns of the spring. Can be adjusted by.

  As described above, according to the traveling equipment for the transport carriage of the present embodiment, the operator uses, for example, the rotation prevention stopper 35 for the self-propelled transport carriage 3 stopped at a certain position on the production line. The cable 18 is sent out a predetermined length from 17. Then, the lid 23 of the power pit 22 located at the rear is opened, and the power plug 19 at the tip of the cable 18 is connected to the socket 21. Thereafter, the self-propelled transport carriage 3 is caused to travel by operating a pendant switch connected to the control panel, and the mounted vehicle body 1 is moved. The vehicle body 1 stops at a predetermined position, moves again after the work is performed, and goes around each process. In the meantime, the self-propelled transport carriage 3 temporarily winds the cable 18 depending on the length of the cable 18 and the relationship with the following vehicle body 1, and the operator plugs the power plug 19 into the socket 21 provided in another power pit 22. Continue running while replacing.

  Therefore, by replacing the power plug 19 of the cable 18 with respect to the sockets 21 in the power supply pits 22 provided on the production line, the self-propelled transport carriage 3 on which the vehicle body 1 is mounted is caused to travel along the production line. be able to. In the traverser or the rotary table, by winding the cable 18, the cable 18 does not become an obstacle, so it is possible to freely change the course and change the direction. In addition, a plurality of self-propelled transport carts 3 run on the production line. However, the replacement of the power plug 19 does not hinder subsequent progress, and the entire work can be efficiently performed.

  Further, since the power pit 22 is located between the left and right rails 4, the cable 18 extends straight behind the self-propelled conveyance carriage 3. Therefore, if the position of the socket 21 is provided on the side of the rail, the cable 18 extends obliquely and hooks a worker who is walking, drags a falling tool, etc. However, in this embodiment, such a problem does not occur. Further, since the power pit 22 is under the floor and the lid 23 is normally closed, the operator does not get stuck and trip over. Further, the connection between the power plug 19 and the socket 21 can be stabilized by connecting the hook 25 in the power pit 22 and the cable stopper 26.

  Since the travel distance of the self-propelled transport carriage 3 is limited by the detection of the counter 32, the cable 18 can be prevented from being cut or otherwise damaged. In addition, even when the cable 18 cannot be automatically wound, the handle 33 can be manually wound, while the rotation prevention stopper 35 is used to restrict automatic winding so that the distal end portion is always out. The cable 18 can also be maintained.

As mentioned above, although embodiment of the traveling equipment and traveling method of the conveyance trolley which concern on this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
For example, in the above-described embodiment, the vehicle body production line of the railway vehicle has been described. However, any other production line or inspection line may be used as long as it uses a self-propelled conveyance carriage. As long as the motor is driven by a drive motor, it is not limited to one that travels on a rail.

DESCRIPTION OF SYMBOLS 1 Car body 3 Self-propelled conveyance trolley 5 Floor 11 Carriage frame 15 Drive motor 16 Control box 17 Cable reel 18 Cable 19 Power plug 21 Socket 22 Power pit 26 Cable stopper 32 Counter 34 Roll-in prevention stopper 35 Anti-rotation stopper

Claims (9)

A self-propelled conveyance cart provided with a drive motor, a control device, and a cable reel is caused to travel according to a set conveyance course , and an object placed on the conveyance cart is placed in a plurality of process work places. In traveling equipment for transport carts for sequential transport and manufacturing ,
A plurality of power supply sockets for connecting a power plug at the end of the cable extending from the cable reel are installed corresponding to the length of the cable on a conveyance course on which the conveyance carriage travels ;
The power source connected to the first socket of the first process work place when moving to the second process work place with the object that has finished the process work being placed on the first process work place being placed. Changing the plug to the second socket of the second process workplace;
Transportation cart traveling equipment characterized by In the traveling equipment of the conveyance cart according to claim 1,
The transport cart runs on two parallel rails laid on the floor along the transport course, and the socket is provided between the rails. Traveling equipment for transport carts. In the traveling equipment of the conveyance cart according to claim 2,
The rail is installed in a track groove formed on the floor, and the socket is provided in a space with a lid formed under the floor. In the traveling equipment of the conveyance cart according to any one of claims 1 to 3,
A cable stopper is attached to the tip of the cable, and an engaging member that engages the cable stopper is provided at each location where the socket is installed. Traveling equipment. In the traveling equipment of the conveyance cart according to any one of claims 1 to 4,
The cable reel is provided with a counter for measuring a cable feed amount, and the control device forcibly stops the transport carriage in response to a stop signal from the counter that detects a cable feed limit length. Traveling equipment for a transport cart characterized by the above. In the traveling equipment of the conveyance cart according to any one of claims 1 to 5,
The cable reel is configured such that the cable can be automatically wound by a spring member, and the cable is provided with a winding prevention stopper for preventing excessive winding from a tip to a predetermined position. Transportation cart traveling equipment characterized by In the traveling equipment of the conveyance cart according to any one of claims 1 to 6,
The cable reel has a rotating handle attached to a drum that winds a cable. In the traveling equipment of the conveyance cart according to any one of claims 1 to 7,
The cable reel has a rotation prevention stopper that restricts rotation of a drum that winds the cable. A self-propelled transport carriage equipped with a drive motor, a control device and a cable reel is connected to the power supply socket with the power plug of the cable extending from the cable reel, thereby supplying power to the drive motor and the control device. In a traveling method of a transport carriage for traveling according to a set transport course, the object placed on the transport carriage is sequentially transported to a plurality of process work places and manufactured .
The sockets are installed at a plurality of locations on the transport course on which the transport cart travels, and the transport cart travels while repeating the replacement work of the power plug with respect to the socket at a location corresponding to the travel position of the transport cart. It is,
The power source connected to the first socket of the first process work place when moving to the second process work place with the object that has finished the process work being placed on the first process work place being placed. Changing the plug to the second socket of the second process workplace;
A traveling method of a transport cart characterized by the above.

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