JP5461871B2 - Traveling method of transport cart - Google Patents

Description

  The present invention relates to a traveling facility and a traveling method for a transport cart for allowing a self-propelled transport cart carrying a transported object to pass through a high temperature portion.

  In manufacturing or inspection (maintenance) of a vehicle body in a railway vehicle, the vehicle body placed on a carriage along the manufacturing or inspection line is sequentially conveyed through each process. FIG. 10 is a plan view schematically showing a part of such a production line. In a production line in a factory, not all processes are arranged in a straight line. Therefore, 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. On such a production line, a plurality of vehicle bodies mounted on a transport carriage are simultaneously moved, and each operation is performed in each process.

  A transport cart that transports a vehicle body in a railroad vehicle manufacturing factory is a temporary cart that travels with a vehicle body mounted on a rail laid in the factory. Two temporary carriages are arranged on the front and rear with respect to one vehicle body, one is a self-propelled conveyance carriage having a drive motor, and the other is a support conveyance carriage having no drive means. Self-propelled transport carts include a cable reel type that connects a cable reel cable mounted on the cart to a power source as a method of supplying power to the drive motor.

JP 2002-97510 A JP-A-8-256846

  Since the self-propelled transport cart may pass through a portion where the temperature reaches 80 ° C., it is necessary to prevent damage to the control device due to high temperature. Therefore, in order to run the self-propelled conveyance cart by adopting the cable reel type, it is necessary to have facilities and methods that take into consideration the configuration in which the conveyance cart moves and the configuration of the conveyance cart itself against high temperatures.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a traveling facility and a traveling method for a transport carriage for allowing a cable reel type self-propelled transport carriage to travel in a high temperature section.

A traveling method of a transport carriage according to the present invention includes a drive motor, a control device, and a cable reel, and a transport set while replacing power supply plugs of cables extending from the cable reel with power supply sockets provided at a plurality of locations. A method for allowing a self-propelled transport cart that automatically travels according to a course to pass through a high-temperature section existing in the transport course. In the high-temperature section, the power plug is removed and placed in a control box having a heat insulating structure. The function of the control device is stopped, the clutch in the power transmission mechanism of the drive motor is disengaged, and a wire extending from a winch installed in front of the traveling direction of the high temperature section is connected to the self-propelled transport carriage. Directly or indirectly connected to the vehicle so that the self-propelled transport cart is advanced by driving the winch. Characterized in that it was.
Moreover, the traveling method of the transport cart according to the present invention is such that the travel method of the transport cart is applied to the transport cart that transports the rail vehicle in a drying process after painting the rail vehicle. preferable.

  According to the present invention, the self-propelled conveyance cart can move the conveyance course by operating the drive motor by replacing the power plug in each power supply socket. After removing the power plug and disengaging the clutch so that it cannot automatically run, the vehicle moves forward by pulling with a winch through the connected wire. Therefore, it can be moved without using a drive motor or control panel, and the operator does not plug in or unplug the power plug where the traveling part is in a mist state, thus ensuring work safety. Can do. Further, in a high temperature part such as a drying chamber, the control panel can be put in a control box having a heat insulating structure to prevent damage.

It is the side view which showed the state which the conveyance trolley carrying a vehicle body drive | works a normal temperature part. It is the side view which showed the state which the conveyance trolley carrying a vehicle body drive | works a high temperature part. 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 front view (a) and side view (b) which showed the inner box of the control box. It is the front view (a) and side view (b) which showed the outer box of the control box. It is the figure which showed the pendant switch. It is each sectional drawing of the side view (a) and the planar view (b) which showed the heat insulation structure of the outer box. It is the overlapping part of the door and the main body of the outer box, and is an A portion enlarged view of FIG. 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 transport cart traveling facility of the present embodiment is configured by the transport cart itself and the factory side.
The carriage is equipped with a rail car body and travels along a rail laid in the factory on a course indicated by an arrow in FIG. 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 arranged at the rear in the advancing direction in order to increase the connection workability of the power plug 19, and the support conveyance carriage 2 having no front drive means is pushed by driving from the rear. In this way, the vehicle body 1 is moved. However, although the connection workability of the power plug 19 is reduced, the positions of the support conveyance carriage 2 and the self-propelled conveyance carriage 3 can be reversed. 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.

  Here, FIG. 3 is the figure which showed the self-propelled conveyance trolley 3 from back with the floor structure of a 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 carriages 2 and 3, a support base 13 protrudes in the center in the longitudinal direction of the carriage frame 11, and as shown in FIG. 3, support supports 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 applied to the reel unless a force is applied to the feeding side.

  On the other hand, on the factory floor 5 between the rails 4, as shown in FIG. 4, a power pit 22 having a lid 23 is formed, and a power supply socket 21 into which the power plug 19 of the cable 18 is inserted is provided. Yes. The self-propelled transport cart 3 can travel by operating the drive motor 15 by connecting the power plug 19 to the socket 21. A plurality of power supply pits 22 having sockets 21 are provided on the production line, and the self-propelled transport cart 3 repeats feeding and rewinding of the cable 18 and replacement of the power plug 19 to repeat the production line. Can travel along. A cable stopper 26 is hooked on the hook 25 of the curved guide plate 24 so that the power plug 19 does not come out even when the cable 18 is pulled during traveling.

  By the way, in the production line shown in FIG. 10, a section indicated by hatching is a high-temperature section 200 where drying is performed after painting on the vehicle body. In the high-temperature section 200, a power feeding socket cannot be installed, and the self-propelled conveyance carriage 3 cannot be driven. Therefore, in this embodiment, as shown in FIG. 2, a method of pulling the transport carriages 2 and 3 on which the vehicle body 1 is mounted with a winch 51 is employed.

  The winch 51 is positioned in front of the high-temperature section 200 in the traveling direction, and the wire 52 fed from there to the rear in the traveling direction is connected to the support conveyance carriage 2. The self-propelled conveyance cart 3 is provided with a clutch for eliminating the resistance of the drive motor 15 to the wheel 12. When the winch 51 is towed, the operator operates the clutch lever 41 to disengage the clutch. It is supposed to be cut.

  Since the room temperature reaches 80 ° C. in the drying chamber after painting, it is necessary to prevent damage to the control panel. This is because electrical control devices such as inverters, power supplies, magnets, and relays that constitute the control panel generally have a use temperature or storage temperature of 50 ° C. or less. In the self-propelled conveyance cart 3 of the present embodiment, the control box 16 has a heat insulating structure in order to protect such a control panel from high heat. On the other hand, in the normal state in which the self-propelled transport carriage 3 is self-propelled, the control panel generates heat and the temperature rises from the inside of the control box 16, so a structure for heat dissipation is provided.

  The control box 16 has a double box structure consisting of an inner box and an outer box, and a control panel is installed in the inner box. FIG. 5 is a front view (a) and a side view (b) showing such an inner box, and FIG. 6 is a front view (a) and a side view (b) showing the outer box. Both the inner box 60 and the outer box 70 have doors 61 and 71 attached to the box bodies 62 and 72 so as to be opened and closed by hinges. An opening of a predetermined size is cut in the inner box 60, a ventilation opening 63 is formed in the opening of the door 61, a fan 64 is provided above the opening on the side of the box body 62, and FIG. A socket 65 for connecting the pendant switch 80 shown in FIG. In this way, the outside air is taken from the air vent 63 and the internal heat is released to the outside of the inner box 60 by the rotation of the fan 64.

  As shown in FIG. 6, a vent 73 is formed in the opening of the door 71 in the outer box 70 containing the broken inner box 60, and a fan 64 of the inner box 60 is formed on the side of the box body 72. Openings 74 and 75 are formed at positions corresponding to the socket 65. Since the surface of the outer box 70 is exposed to a high temperature, lids 76, 77, and 78 are attached to the vent surface 73 and the openings 74 and 75 so as to be openable and closable. The lids 76 and 77 are opened when the room temperature section travels, take in the outside air from the air vent 73, release the internal heat to the outside of the outer box 70 by the rotation of the fan 64, and are closed in the high temperature section. In addition, the ventilation openings 63 and 73 formed in the inner box 60 and the outer box 70 are formed so as to overlap each other so as to improve the air flow.

  By the way, as shown in FIG. 7, a signal switch 82 is provided at the tip of a cable 81 in a pedal switch 80 which is an operating means of the self-propelled transport carriage 3 and is inserted into a socket 65. Therefore, when traveling in a high temperature section, the pendant switch 80 is removed and can be stored in the control box 16. And the cover 78 is closed so that the socket 65 may not receive heat directly. On the other hand, in a normal section, the lid 78 of the outer box 70 is opened, and the signal plug 82 of the pendant switch 80 taken out is inserted into the socket 65.

  Next, the outer box 70 has a heat insulating structure that blocks heat transfer from the outside to the inside. FIG. 8 is a view showing a heat insulating structure of the outer box, and shows cross sections in a side view (a) and a plan view (b). In the outer box 70, a heat insulating material 91 is attached to the entire inner surfaces of the door 71 and the box main body 72, and the inner box 60 is inserted with a slight gap as shown in FIG. 8B. An opening 92 is cut in the heat insulating material 91 located on the side surface of the door 71 and the box main body 72, and an air vent 73 and openings 74 and 75 are formed there.

  FIG. 9 is an overlapping portion of the door 71 of the outer box 70 and the box body 72, and is an enlarged view of a portion A of FIG. The door 71 is formed with a bent portion 71a in which a metal flat plate is bent inward at the lower end, and the box body 72 is formed with a return portion 72a bent in a bowl shape at the end of a metal plate forming a bottom plate. ing. The return portion 72a is formed so as to be accommodated in the bent portion 71a when the door 71 is closed. A packing guide 92 is attached to the inside of the door 71 at a corner with the heat insulating material 91, and a rubber sheet 93 is sandwiched between the bottom plate and the heat insulating material 91 on the box body 72 side.

Subsequently, in the production line shown in FIG. 10, the operator sends a cable 18 from the cable reel 17 to the self-propelled conveyance carriage 3 stopped at a certain position on the production line by a predetermined length, and is positioned rearward. The lid 23 of the power pit 22 to be opened is opened and the power plug 19 at the end of the cable 18 is opened.
Is connected to the socket 21. Thereafter, the self-propelled transport carriage 3 is caused to travel by operating the pendant switch 80 connected to the control panel, and the vehicle body 1 mounted between the support transport carriage 2 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.

  In the normal temperature section, the control box 16 of the self-propelled transport cart 3 is in a state in which the lids 76, 77, 78 of the outer box 70 are opened as shown in FIG. The double box control box 16 is driven by a fan 64 provided in the inner box 60 and the outer box 70, discharges the air having heat in the box to the outside, and takes in the outside air from the ventilation openings 63 and 73. By such ventilation, the control panel that generates heat during the automatic traveling of the self-propelled conveyance carriage 3 is cooled.

  Next, when the vehicle body 1 travels in the high temperature section 200 shown in FIG. 10, as shown in FIG. 2, the wire 52 extending from the winch 51 is connected to the leading support conveyance carriage 2. In the self-propelled transport cart 3, the clutch is disengaged to eliminate the resistance by the drive motor 15, and the signal plug 82 is removed from the socket 65 and the pendant switch 80 is put into the control box 16 together with the cable 81. Then, the lids 76, 77, 78 of the outer box 70 are closed. Thereafter, the winch 51 is driven, the vehicle body 1 is pulled by winding the wire 52, and the high temperature section 200 is moved.

  Since the self-propelled conveyance cart 3 that moves in the high-temperature section 200 moves when the winch 51 is pulled, the drive motor 15 and the control panel are not driven. Therefore, even when traveling in a high temperature part such as a drying room following the coating room, the temperature of the drying room exceeds 50 ° C., which is the heat resistance temperature of the control device, because the control panel is placed in the control box 16. Breakage can be prevented even at about ℃.

  By the way, in this embodiment, although the traveling equipment which runs the conveyance cart which adopted the cable reel type was explained, it is effective to make the control panel into a double box structure also in the equipment which runs the conveyance cart with a battery. Needless to say.

As mentioned above, although one 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, as long as a self-propelled conveyance carriage is used, it may be another production line or a repair line, and the conveyance carriage is also a drive motor. If it equips with the control panel which has the electric equipment which controls etc., it will not be restricted to what runs on a rail.

DESCRIPTION OF SYMBOLS 1 Car body 3 Self-propelled conveyance cart 5 Floor 11 Cart frame 15 Drive motor 16 Control box 17 Cable reel 18 Cable 19 Power plug 21 Socket 22 Power pit 41 Clutch lever 51 Winch 52 Wire 60 Inner box 70 Outer box 63, 73 Ventilation opening 64 Fan 65 Socket 80 Pendant switch 91 Thermal insulation

Claims (2)

A self-propelled transport cart that includes a drive motor, a control device, and a cable reel and that automatically travels according to a set transport course while replacing the power plug of the cable extending from the cable reel with a power supply socket provided at a plurality of locations. , A traveling method of the transport carriage for passing the high temperature section existing in the transport course,
In the high temperature section, remove the power plug, stop the function of the control device placed in the control box of the heat insulation structure, and disengage the clutch in the power transmission mechanism of the drive motor,
A wire extending from a winch installed in front of the traveling direction of the high temperature section is directly or indirectly connected to the self-propelled conveyance cart, and the winch is driven to pull the self-propelled conveyance cart. The traveling method of the transport cart, wherein the transport cart is moved forward.   In the manufacturing method of a rail vehicle using the traveling method of the conveyance cart according to claim 1,
  The method for manufacturing a railway vehicle, wherein the traveling method of the transportation vehicle is applied to the transportation vehicle that transports the railway vehicle in a drying process after painting the railway vehicle.

Images