JP6264557B2 - Up-and-down circulation type transport cart-based transport device - Google Patents

Description

  The present invention is arranged so that the end of the upper transfer travel path and the end of the lower return travel path of the transport carriage are vertically overlapped, and the transport carriage is moved up and down between the ends of the upper and lower travel paths. The present invention relates to a transport device using a transport cart of a vertical circulation type provided with a transport cart lifting device.

  In this type of conveying cart-based conveying apparatus, as disclosed in Patent Document 1, the inlet side end of the upper conveying travel path and the outlet side end of the lower returning traveling path are arranged so as to overlap vertically. When it is installed, the transfer of the object to be transferred onto the transfer carriage is performed on the empty transfer carriage raised to the upper limit height connected to the upper transfer travel path by the transfer carriage lifting device, When the exit side end of the upper transport travel path and the entrance end of the lower return travel path are arranged so as to overlap vertically, the removal and transfer of the object to be transported from the transport carriage is It is configured to be carried out from a transport carriage supported at a height limit that is connected to the upper transport travel path by the transport carriage lifting device.

Japanese Patent Laid-Open No. 5-162839

  In the conventional configuration as described above, when a self-propelled transported vehicle is handled as a transported object, the transported vehicle is placed on the transport cart supported by the transport cart lifting device, or the transport cart is lifted or lowered. The floor material for leaving the transported vehicle from the transport cart supported by the device, specifically, the horizontal road surface for transfer at the same level as the transport cart supported by the transport cart lifting device, and the transfer It is necessary to provide an approach path forming floor material and an exit path forming floor material for a transported vehicle having an inclined road surface portion connecting between the horizontal road surface and the floor surface. Therefore, a large space is required on the outer side of the transport carriage lifting device installed adjacent to the end of the upper transport travel path for the construction of the entrance path forming floor material and the exit path forming floor material of the transported vehicle. become.

  Further, a space in the traveling direction of the transport carriage is required between the transport carriage that is lifted and lowered by the transport carriage lifting device and the transport carriage on the end of the upper transport travel path. Thus, in the upper transfer travel route, various operations can be performed on the loaded transfer target vehicle while moving all the transfer carriages at a constant speed (low speed) in a continuous state where the transfer carriages adjacent to each other in the front and rear are in contact with each other. In order to eliminate the space on the entrance side of the upper transport travel route, the transport carriage is sent from the transport carriage lifting device to the upper transport travel route at a high speed, and on the exit side of the upper transport travel route In order to secure the space, it is necessary to draw the transport carriage at a high speed from the upper transport travel path to the transport carriage lifting device. Therefore, in the above-described conventional configuration, the transported vehicle is loaded on the transport carriage that moves at a high speed even though it is an extremely short distance, and only the load on the high-speed sending means or the high-speed retracting means increases. In addition, there is a demerit of being affected by the high speed movement such as shaking of the transported vehicle.

The present invention proposes a friction-driven transport device that can solve the above-described conventional problems, and the friction-driven transport device according to the present invention has a relationship with the embodiments described later. For ease of understanding, the reference numerals used in the description of the embodiment are shown in parentheses, and the end of the upper conveyance travel route (2) of the conveyance carriage (1) and the lower return travel Conveying cart lifting device (4/5) that is arranged so as to overlap the end of the path (3) vertically and moves the transport cart (1) up and down between the ends of the upper and lower travel paths (2, 3). ) is provided, said conveying carriage lifting device horizontal road section covering the upper side of (the conveyance carriage lifting device including a transport vehicle (1) which is supported by 4/5) (4/5) and (6/9) A floor for moving a vehicle comprising an inclined road surface portion (7/10) connecting the horizontal road surface portion (6/9) and the floor surface on the side opposite to the side on which the upper conveyance travel route (2) is located. Material (8/11) is installed Between the horizontal road surface portion (6/9) of the floor material for moving the vehicle (8/11) and the conveyance carriage (1) positioned on the end portion of the upper conveyance travel route (2). In the transfer device using the transfer carriage configured so that the transferred vehicle (W) can be transferred by self-running ,
The upper conveyance travel path (2) has conveyance carriage driving means (friction drive constant speed feed) for moving the conveyance carriage (1) at a constant speed in abutting state where the conveyance carriages (1) adjacent to each other in front and rear contact each other. And a conveying drive elevating device on the entrance side of the upper conveying travel path (2) in the conveying cart elevating device (4/5). (4) eliminates the space between the transport cart (1) on the transport cart lifting device (4) and the transport cart (1) on the entrance end of the upper transport travel path (2). High-speed feed means (friction drive high-speed pull-in feed means (16)) is also provided, and the high-speed feed means feeds into the upper conveyance travel path (2) and is moved at a constant speed by the conveyance carriage drive means. on starting the conveyance carriage (1), capable such structure Noriutsuri the transportation target vehicle from the upper horizontal road section (6) of the floor for use in vehicle movement (8) (W) is the self It has become.

According to the above configuration of the present invention, only the inclined road surface portion of the floor material for moving the vehicle is disposed outside the transport carriage lifting device installed adjacent to the end portion of the upper transport travel route. Therefore, compared with the case where the entire floor for moving the vehicle consisting of the horizontal road surface portion and the inclined road surface portion must be disposed, the space required outside the transport carriage lifting device is reduced . . In particular , it is possible to transfer the transported vehicle from the horizontal road surface portion of the floor material for moving the vehicle onto the transport carriage after starting the constant speed travel after being sent at high speed to the entrance of the upper transport travel path. I can do it. Also, the transport carriage lifting device (5) on the exit side of the upper transport travel route (2) has a transport cart at a higher speed than the constant speed moving speed of the transport cart (1) in the upper transport travel route (2). A high-speed pull-in means (friction-driven high-speed pull-in / feed-out means (17)) for pulling (1) from the upper transfer travel path (2) is also provided, and this high-speed feed means transfers the carriage from the upper transfer travel path (2). From the top of the transport carriage (1) that is moving at a constant speed by the transport carriage drive means before being pulled into the lifting device (5), to the horizontal road surface portion (9) of the floor material (11) for moving the vehicle. When the transported vehicle (W) is configured so that it can be transferred by self-propelling, the floor material for moving the vehicle is taken from the top of the transport carriage in the constant speed travel state before being pulled out at high speed from the exit of the upper transport travel path. The transported vehicle can be transferred onto the horizontal road surface. Therefore, the transported vehicle is loaded on the transport cart that is lifted and lowered by the transport cart lifting device, or the transport cart that is pulled in or sent out at high speed between the transport cart lifting device and the end of the upper transport travel path. Compared with the case where there is a load, the load applied to the driving means for pulling in or pulling out the transport carriage between the upper transport travel path and the transport carriage lifting device is reduced, and the transported vehicle is affected by shaking and the like. Less to give.

FIG. 1 is a schematic side view in which the middle of a travel route is omitted in a cart vertical circulation type conveying apparatus configured using a friction drive conveying apparatus according to the present invention. FIG. 2 is a schematic plan view for explaining the upper conveyance travel route. FIG. 3 is a schematic plan view for explaining the lower return travel route. FIG. 4 is a plan view showing the friction drive means and the transport carriage disposed at the entrances of both the upper and lower travel paths, and omits the left and right half floor materials of the transport carriage. FIG. 5A is a side view of the conveyance carriage, FIG. 5B is a longitudinal front view showing the conveyance carriage before assembly completion, and FIG. 5C is a longitudinal front view showing the conveyance carriage after completion of assembly. FIG. 6A is a transverse elevation view at the entrance of the upper conveyance travel route, and FIG. 6B is a transverse elevation view at an intermediate position between the upper and lower travel routes. FIG. 7A is a cross-sectional elevation view at the entrance of the lower return travel route, and FIG. 7B is a cross-sectional elevation view showing the transport carriage lifting device disposed at both ends of the upper and lower travel routes. is there.

  The carriage vertical circulation type conveying device shown in FIG. 1 includes an upper conveyance traveling path 2 and a lower return traveling path 3 as traveling paths of the conveying carriage 1. The transport carriage lifting devices 4 and 5 for transferring the transport carriage 1 between the upper and lower travel paths 2 and 3 are disposed. Further, on the entrance side of the upper transport travel path 2, a horizontal road surface portion 6 covering the upper side of the transport carriage lifting device 4 and an ascending slope road surface portion 7 connected to the starting end portion of the horizontal road surface portion 6 are formed. A vehicle entry path forming floor material 8 is erected, and is connected to the exit side of the upper conveyance travel path 2 to a horizontal road surface portion 9 that covers the upper side of the conveyance carriage lifting device 5 and a terminal portion of the horizontal road surface portion 9. Further, a vehicle exit path forming floor material 11 composed of a downwardly inclined road surface portion 10 is constructed.

  As shown in FIG. 2, at the entrance of the upper transport travel route 2, the transport cart 1 sent out from the transport cart lifting device 4 is taken over into the transport travel route 2 at a constant speed (a constant low speed, hereinafter the same). A friction drive constant speed feeding means 12 for feeding is provided, and a friction drive constant speed sending means 13 for feeding the transport cart 1 to the transport cart lifting device 5 at a constant speed is also provided at the exit of the transport travel path 2. Yes. Further, as shown in FIG. 3, at the entrance of the lower return travel path 3, the friction drive constant that takes over the transport carriage 1 delivered from the transport carriage lifting device 5 and feeds it into the return travel path 3 at a constant speed. A speed feeding means 14 is provided, and a friction drive constant speed sending means 15 is provided at the exit of the return travel path 3 to send the transport carriage 1 to the transport carriage lifting device 4 at a constant speed.

  As shown in FIGS. 2 and 3, the transport carriage lifting device 4 on the entrance side of the upper transport travel path 2 is transported by the friction drive constant speed delivery means 15 at the exit of the lower return travel path 3. The operation of pulling the carriage 1 into the transfer carriage lifting / lowering device 4 at a high speed (a constant speed higher than the constant speed, hereinafter the same), and the transfer carriage 1 in the transfer carriage lifting / lowering apparatus 4 at the entrance of the upper transfer travel path 2 Friction drive high-speed retraction / feeding means 16 that can selectively perform the action of feeding at high speed is provided, and the transport carriage lifting device 5 on the exit side of the upper transport travel path 2 has a friction at the exit of the upper transport travel path 2. The operation of pulling the transport carriage 1 delivered by the driving constant speed delivery means 13 into the transport carriage lifting / lowering device 5 at a high speed, and the transport carriage 1 in the transport carriage lifting / lowering device 5 to the entrance of the lower return traveling path 3 Fast feed Friction drive fast tuning delivery means 17 can perform a no-effect selectively are juxtaposed.

  Further, between the friction drive constant speed feeding means 12 and the friction drive constant speed sending means 13 in the upper conveyance travel path 2 and between the friction drive constant speed feeding means 14 in the lower return travel path 3 and the friction drive. Between the constant speed delivery means 15, guide means 18 and 19 for restricting the travel route of the transport carriage 1 are provided. As shown in FIG. 6B, the guide means 18 and 19 are constituted by guide rollers 18a and 19a each supported by a vertical support shaft so as to sandwich the transport carriage 1 from both the left and right sides. 18a and 19a are arranged at equal intervals along the travel route at intervals sufficiently shorter than the entire length of one transport carriage 1.

  As shown in FIGS. 6A and 7A, the friction drive constant speed feeding means 12 and 14 and the friction drive constant speed delivery means 13 and 15 include a pair of left and right rollers 20 that sandwich the transport carriage 1 from both the left and right sides, respectively. Friction driving means 22 including a motor 21 that drives at least one of the pair of left and right rollers 20 is used. In the illustrated embodiment, the roller 20 that presses against the side surface of the transport carriage 1 with a spring force and the roller 20. The friction drive means 22 is composed of a pair of left and right friction drive units 22a, 22b having the same structure and a motor 21 for rotating the motor. In this configuration, the pair of left and right motor-driven rollers 20 are pressed against the side surface of the transport carriage 1 with a spring force.

  The friction drive constant speed delivery means 13, 15 are for delivering one transport carriage 1 at a constant speed toward the transport carriage lifting devices 4, 5 at the end of each of the upper and lower travel paths 2, 3. The friction drive means 22 (a pair of left and right friction drive units 22a and 22b) is configured. The friction drive constant speed feeding means 12 and 14 are provided for a plurality of transport carts 1 in the upper and lower travel paths 2 and 3, respectively. The whole thing must be promoted, and the load is very large. Therefore, as shown in FIGS. 2 to 4, these friction drive constant speed feeding means 12 and 14 have a plurality of friction drive means 22 arranged side by side in the traveling path direction at intervals sufficiently shorter than the entire length of the transport carriage 1. The drive carriage 2 to be driven can be propelled by a plurality of friction drive means 22. A specific interval in the traveling path direction of the friction drive means 22 in this case will be described later. Further, in the configuration of the embodiment, the friction drive roller 20 that sandwiches the conveyance carriage 1 from both the left and right sides is pressed against the left and right side surfaces of the conveyance carriage 1 by the spring force, so that only the friction drive units 22a and 22b carry the conveyance carriage. The travel route of the carriage 1 cannot be regulated accurately. Therefore, as shown in FIG. 4, the friction drive constant speed feeding means 12 and 14 are provided with a single conveying carriage 1 from the left and right sides at a plurality of locations in the traveling direction, similarly to the guide means 18 and 19. A guide means 23 composed of a plurality of sets of guide rollers 23a sandwiched is combined.

  As shown in FIGS. 2 and 3, the friction drive high-speed pull-in / feed-out means 16, 17 is a set of friction disposed on the side adjacent to the upper and lower travel paths 2, 3 of the transport carriage lifting devices 4, 5. It is comprised by the friction drive means 22 which consists of drive units 22a and 22b. Specifically, the friction drive means 22 dedicated to pulling in the height adjacent to the exits of both the upper and lower transport travel paths 2 and 3 and the delivery adjacent to the entrance of the travel paths 2 and 3 for both the upper and lower transports. In this embodiment, as shown in FIG. 7B, the left and right sides of the transport carriage 1 provided in the transport carriage lifting and lowering devices 4 and 5 are supported. A pair of left and right lifting platforms 4a, 4b / 5a, and 5b that move up and down are configured by attaching one friction drive means 22 (a pair of left and right friction drive units 22a and 22b) that also serves as a pull-in / feed-out.

  The lifting drive means of the pair of left and right lifting platforms 4a, 4b / 5a, 5b of the transport carriage lifting devices 4, 5 are not shown because various mechanisms are conventionally known. In other words, as is well known in various lifters that move a workpiece up and down in parallel between a lower limit height and a lower limit height, the pair of left and right lifting platforms 4a, 4b / 5a, 5b includes a pantograph link mechanism and a lifting guide (rod, Rails, etc.), and the lifts 4a, 4b / 5a, 5b are supported by the upper limit height corresponding to the upper conveyance travel path 2 and the lower limit corresponding to the lower return travel path 3. As an elevating drive means for elevating to and from the height, for example, supporting cam driven rollers on the elevating platforms 4a, 4b / 5a, 5b (in the case of using the pantograph link mechanism, supported by the pantograph link mechanism) In addition, a fluid pressure cylinder, an electric cylinder, and a cam that is horizontally reciprocated by other actuators are provided.

  As shown in FIGS. 4 and 5, the transport carriage 1 includes a rectangular carriage main body 24 having a long plan view in the traveling direction, left and right rows of wheels 25 a and 25 b, left and right extended floors 31 a and 31 b, and left and right sides It is composed of side supported rollers 26a and 26b. The cart body 24 is composed of two long main vertical members 29a and 29b extending over the entire length in the length direction (traveling direction), and a connecting frame 30 that connects and integrates the two main vertical members 29a and 29b. In addition, projecting floor portions 31a and 31b are detachably attached to the outer sides of the main longitudinal members 29a and 29b and project to the left and right sides. The connection frame 30 can also be configured to be detachable from the main longitudinal members 29a and 29b.

  The main vertical members 29a and 29b of the carriage main body 24 are a pair of left and right vertical members 32a and 32b, a connecting member 33 for connecting and integrating these vertical members 32a and 32b to each other at both ends in the length direction and at intermediate intervals. And it is comprised from the strip | belt-shaped board 34 laid on the said both vertical material 32a, 32b so that it may protrude on both the left and right sides of both vertical material 32a, 32b. The connecting frame 30 of the carriage main body 24 includes a plurality of connecting members 35 that connect and integrate the main vertical members 29a and 29b to each other at the same position as the connecting members 33 of the main vertical members 29a and 29b. It is comprised from the trolley | bogie flooring 35a which is laid on top and block | closes between a pair of left and right main vertical members 29a and 29b. The overhanging floor portions 31a and 31b are formed on the left and right sides of the transport carriage 1 parallel to the traveling direction of the transport carriage 1 and are thinner than the main longitudinal members 29a and 29b and extend over the entire length of the carriage main body 24, The sub-vertical member 36 and the belt-like mounting plate 37 are connected and integrated with each other at the same position as the connecting member 33 of the main vertical members 29a and 29b. Connecting material 38, and these sub-vertical members 36 and trolley floor material 38a that are laid on the connecting members 38 and block between the pair of left and right main vertical members 29a, 29b and the sub-vertical members 36. . The vertical members 32a and 32b are shaped steel such as grooved steel, the connecting members 33, 35, and 38 and the auxiliary vertical member 36 are shaped steel such as square steel pipes, the strip-shaped plate 34 and the strip-shaped mounting plate 37 are steel plates, and Plywood or the like can be used for each of the cart floor materials 35a and 38a. In other words, the transport cart 1 has a cart body 24 including a pair of left and right main longitudinal members 29a and 29b as strength members that receive a load, and is thinner than the cart body 24, so that it can be used for workers to walk. It is comprised by the overhang | floating floor parts 31a and 31b of both the right and left provided with the intensity | strength which can endure.

  Two rows of left and right wheels 25a, 25b are arranged between the pair of left and right vertical members 32a, 32b in the main vertical members 29a, 29b at positions at intermediate intervals between both ends of the main vertical members 29a, 29b in the length direction. The main longitudinal members 29a and 29b are pivotally supported so as to protrude slightly downward from the bottom surfaces. Further, the supported rollers 26a and 26b on the left and right sides use the corners between the sub-vertical members 36 in the overhanging floor portions 31a and 31b and the connecting members 38 excluding the connecting members 38 at both ends. Thus, the sub-vertical members 36 are pivotally supported at positions at appropriate intervals in the length direction so as to protrude slightly downward from the bottom surfaces of the extended floor portions 31a and 31b via horizontal and horizontal support shafts.

  The transport apparatus shown in FIGS. 1 to 3 transports a self-propelled transported vehicle W by a transport carriage 1 in the upper transport travel path 2. In the return travel route 3, a required number of transport carts 1 are arranged over the entire travel route in a continuous state where the transport carts 1 adjacent to each other in the front and rear face each other. Then, as shown in FIGS. 6 and 7, each transport carriage 1 in the upper transport travel path 2 is a pair of left and right positioned in the middle of the lateral width of each transport carriage 1 in the lower return travel path 3. The main longitudinal members 29a and 29b (band-like plates 34) are supported so as to be able to travel via the wheels 25a and 25b, and the total weight including the loaded load is the main weight of each transport carriage 1 in the return travel path 3. The floor surface forming the return travel path 3 via the vertical members 29a and 29b and the wheels 25a and 25b pivotally supported by the main vertical members 29a and 29b, actually, a belt-like plate laid on the floor surface Are received by flat rails 45a and 45b. The entrance and exit of the lower return travel path 3 formed by the floor surfaces (flat rails 45a and 45b) are located outside the transport carriage lifting devices 4 and 5 in the same manner as the upper transport travel path 2. However, due to the configuration of the transporting cart lifting devices 4 and 5 of this embodiment, the lower return travel path 3 is extended into the transporting cart lifting devices 4 and 5, and the transporting cart lifting devices 4 and 5. This is a travel path of the transport carriage 1 that enters and exits between the inner return travel path 3 and the lower return travel path 3.

  Each carriage 1 in both the upper and lower travel paths 2, 3 has a rear end that receives propulsive force in the forward direction by friction drive constant speed feeding means 12, 14 disposed at the entrances of these travel paths 2, 3. Friction drive constant speed sending that is arranged at the exit of both the upper and lower travel paths 2 and 3 is driven to push and drive by the transport carriage 1 and each of the transport carriages 1 moves forward at a speed equal to or higher than a constant speed. Blocked by means 13,15. Accordingly, the transport carts 1 in both the upper and lower travel paths 2 and 3 travel forward at a constant speed while maintaining a continuous state where the transport carts 1 adjacent to each other in the front and rear are in contact with each other. At this time, as shown in FIG. 6B, each transport carriage 1 is sandwiched from the left and right sides by the guide rollers 18a and 19a of the guide means 18 and 19 on both sides of the travel path, and the horizontal and horizontal shaking motion is suppressed. Yes.

  As described above, the friction drive constant speed feeding means 12 and 14 are provided with a large number of friction drive means 22 in the traveling direction in order to have a large propulsive force corresponding to the load, The transport cart 1 is configured so that necessary propulsive force is obtained as a whole. On the other hand, each transport cart 1 has sufficient strength as a strength member for the pair of left and right main longitudinal members 29a and 29b of the cart body 24. The overhanging floor portions 31a and 31b that do not require that much strength reduce the material strength and reduce the weight. Under such circumstances, due to the large clamping force from the left and right lateral directions received from the large number of friction drive means 22, there is a possibility that an adverse effect in terms of strength occurs in the overhanging floor portions 31a and 31b on the left and right sides of the transport carriage 1. Conceivable. Therefore, as shown in FIG. 4, the friction drive constant speed feeding is performed with respect to the maximum distance D1 of the connecting member 38 in the overhanging floor portions 31a and 31b (the illustrated example is the same as the maximum interval of the connecting member 35 in the connecting frame 30). The distance D2 in the running direction of each friction drive means 22 (friction drive roller 20) in the means 12, 14 is equal or larger (however, it is not more than twice the maximum distance D1 of the connecting member 38), The two friction drive rollers 20 are not positioned between the connecting members 35 and 38 adjacent to each other in the traveling direction.

  As shown in FIG. 1, a self-propelled transported vehicle W stands by on the horizontal road surface portion 6 of the vehicle entrance path forming flooring 8, and friction drive constant speed feeding from the entrance of the upper transport travel path 2. It is transferred by the self-propelled driving of the driver who boarded onto the transport carriage 1 which has started the forward traveling at a constant speed by the inserting means 12. At this time, the left and right wheels of the transported vehicle W are allowed to roll on the left and right main longitudinal members 29a and 29b (on the belt-like plate 34) of the transport cart 1 so that the wheels Wa on the left and right sides of the transported vehicle W can roll. The interval between Wa and the interval between the main longitudinal members 29a and 29b on the transport carriage 1 side are matched. Thus, the transported vehicle W transferred onto the transport carriage 1 at the entrance of the upper transport travel path 2 is subjected to the constant speed travel of the transport cart 1 on the upper transport travel path 2. A predetermined work is received by an operator who gets on the transport carriage 1 or by an automatic device. When the transported vehicle 1 carrying the transported vehicle W reaches the predetermined exit position of the upper transport travel path 2, the transported vehicle W that has completed the work is self-propelled by driving of the boarded driver, The vehicle exits from the transporting cart 1 via the vehicle exit path forming floor 11. As shown in FIG. 6 and FIG. 7A, on both the left and right sides of the upper transport travel path 2, the worker walks at substantially the same level as the surface of each transport carriage 1 that travels at a constant speed along the upper transport travel path 2. The floor material 46 can be installed on the building side.

  An empty transport cart 1 that has lowered the transported vehicle W at a predetermined position at the exit of the upper transport travel path 2 is moved to the upper transport travel path 2 by the friction drive constant speed delivery means 13 at the exit of the transport travel path 2. Is sent out onto the lifting platforms 5a and 5b of the transporting cart lifting device 5 waiting at the height limit corresponding to the exit of the transporting platform 5, and at the same time the transporting cart 1 is separated from the friction drive constant speed delivery means 13, It is taken over by the friction drive high-speed pull-in / feed-out means 17 provided in 5a, 5b, and is pulled away from the transport carriage 1 immediately after by the high-speed pull-in action, and is transferred onto the lifts 5a, 5b. At this time, the transport carriage 1 moves while being supported on the lifting platforms 5a and 5b in a state where a plurality of supported rollers 26a and 26b on both left and right sides roll on the lifting platforms 5a and 5b. The transport carriage 1 moved onto the lifts 5a, 5b is lowered to a position corresponding to the entrance of the lower return travel path 3 when the lifts 5a, 5b are lowered to the lower limit height. At this time, the wheels 25a and 25b are landed, and the left and right supported rollers 26a and 26b are slightly lifted from the lifts 5a and 5b, and the lifts 5a and 5b do not support the transport carriage 1. It becomes a state.

  Thereafter, the transport carriage 1 lowered to a position corresponding to the entrance of the lower return travel path 3 is sent out to the entrance of the lower return travel path 3 by the high speed delivery action of the friction drive high speed retracting delivery means 17. It is. After the transport carriage 1 is completely sent out from the upper side of the lifts 5a and 5b to the lower return travel path 3, the lifts 5a and 5b rise again to the upper limit height and are connected to the upper transport travel path 2. The While the above operation is completed, exit of the transported vehicle W from the next transport carriage 1 on the upper transport travel path 2 is completed, and the transport cart 1 that has become empty becomes the upper transport travel path 2. Are sent out to the lifts 5a and 5b connected to the.

  On the other hand, in the lower return travel path 3, the last transport carriage 1 that has been sent from the transport carriage lifting / lowering device 5 at a high speed and has reached a predetermined position subjected to the constant speed feeding action by the friction drive constant speed feeding means 14 is provided. The friction drive constant speed feeding means 14 drives forward at a constant speed, and pushes and drives all the transport carriages 1 in the lower return travel path 3. Accordingly, all the transport carts 1 in the lower return travel path 3 travel forward in the opposite direction to the transport cart 1 that transports the transported vehicle W in the upper transport travel path 2, while moving upward. It is a travel path that supports each transport carriage 1 traveling on the travel path 2.

  The transport carriage 1 that has reached the exit of the lower return travel path 3 is transported to the transport carriage lifting / lowering device 4 waiting at the lower limit by the friction drive constant speed delivery means 15 at the exit of the return travel path 3. The transport carriage 1 is separated from the friction drive constant speed delivery means 15 and simultaneously taken over by the friction drive high speed pull-in delivery means 16 included in the elevation stands 4a and 4b. It is pulled away from the transport carriage 1 immediately after it by the pulling action, and pulled to a position on the lifting platforms 4a and 4b at the lower limit height. At this time, the transport carriage 1 travels on the floor surface (flat rails 45a, 45b) via the wheels 25a, 25b, and a plurality of supported rollers 26a, 26b on the left and right sides of the transport cart 1 The elevators 4 a and 4 b that move slightly above 4 b and have a lower limit height do not support the transport carriage 1. In this way, the carriage 1 drawn to the predetermined position by the friction drive high-speed pull-in / out means 16 is moved up and down by the lifts 4a and 4b via the supported rollers 26a and 26b on the left and right sides. Supported by 4a and 4b. In this state, the transport carriage 1 is raised to the height corresponding to the entrance of the upper transport travel path 2 by raising the lift bases 4a, 4b to the upper limit height, and then the friction drive high-speed pull-in delivery means. 16 is sent to the entrance of the upper conveyance travel path 2 by the high-speed delivery action. The empty elevators 4a and 4b are lowered again to the lower limit height, and are prepared for receiving the transport carriage 1 from the lower return travel path 3. The transport carriage 1 sent to the entrance of the upper transport travel path 2 is taken over by the friction drive constant speed feeding means 12 at the entrance of the transport travel path 2 and is driven at a constant speed. All the transport carts 1 are pushed and driven at a constant speed, and the transported vehicle W waiting on the vehicle entry path forming floor material 8 is transferred by self-propelled driving.

  Note that the transport carriage 1 that receives high-speed pull-in or high-speed feed action by the friction drive high-speed pull-in and feed means 16 and 17 of the transport carriage lifting and lowering devices 4 and 5 has the wheels 25a and 25b at the level of the lower return travel path 3. And is supported on the lifting platforms 4a, 4b / 5a, 5b through the supported rollers 26a, 26b at the level of the upper conveyance travel path 2. It is. Accordingly, in order to regulate the traveling direction of the transport carriage 1 at the positions on the lifting platforms 4a, 4b / 5a, 5b, as shown in FIG. 2 and FIG. Similar to the guide means 18 and 19, guide means 47, which are formed by supporting guide rollers 47a and 48a sandwiching the left and right sides of the transport carriage 1 on the elevating bases 4a, 4b / 5a and 5b at appropriate intervals in the traveling direction, 48 can be added.

  In carrying out the present invention, the structure of the transport carriage 1 and the structures of the transport carriage lifting devices 4 and 5 are not limited to those of the above-described embodiments, and various well-known transport carriages and transport structures have been known. A cart lifting device can be used. Of course, the guide rail for supporting and guiding the transport cart 1 on the upper transport travel path 2 is not supported by the transport cart 1 on the lower return travel path 3 but the transport cart 1 on the upper transport travel path 2. It may be a conventionally well-known one.

  The conveyance device using the conveyance carriage of the present invention is a vertical circulation type conveyance device that causes all conveyance vehicles in the conveyance section to run at a constant speed in a pushing state by friction driving means at the entrance of the conveyance section in an assembly line of an automobile, etc. It can be used.

DESCRIPTION OF SYMBOLS 1 Transfer trolley 2 Upper side travel travel path 3 Lower return travel path 4,5 Transport trolley elevating device 4a, 4b / 5a, 5b Elevation base 6,9 Horizontal road surface part 7 Rising slope road surface part 8 Vehicle entrance path formation flooring DESCRIPTION OF SYMBOLS 10 Down slope road surface part 11 Vehicle exit path formation floor material 12,14 Friction drive constant speed sending means 13,15 Friction drive constant speed sending means 16,17 Friction drive high speed drawing-in means 18,19,23,47, 48 Guide means 18a, 19a, 23a, 47a, 48a Guide roller 20 Friction drive roller 21 Motor 22 Friction drive means 22a, 22b Friction drive unit 24 Dolly body 25a, 25b Wheels 26a, 26b Supported rollers 29a, 29b Main longitudinal members 30 Connecting frame 31a, 31b Overhanging floor 32a, 32b Vertical member 33, 35, 38 Connecting member 34 Band shape Plate 35a, 38a Bogie floor material 36 Sub-vertical material 37 Band-shaped mounting plate 45a, 45b Flat rail 46 Floor material

Claims (2)

A transport cart that is arranged so that the end of the upper transport travel path and the end of the lower return travel path of the transport cart overlap in the vertical direction, and moves the transport cart up and down between the ends of the upper and lower travel paths. An elevating device is provided , and includes a horizontal road surface covering the upper side of the conveying cart elevating device including the conveying cart supported by the conveying cart elevating device, and on the side opposite to the side having the upper conveying travel path, A vehicle moving floor material comprising a road surface portion and an inclined road surface portion connecting the floor surface is constructed, and is positioned on the horizontal road surface portion of the vehicle moving floor material and on an end portion of the upper conveyance travel route. In the transfer device using the transfer carriage configured to be able to transfer the transferred vehicle by self-propelled between the transfer carriage and the
The upper transport travel path is provided with transport cart driving means for moving the transport cart at a constant speed in abutting state where the transport carts adjacent to each other in front and rear contact each other. The transport carriage lifting device on the entrance side of the travel route is fed at high speed to eliminate the space between the transport cart on the transport cart lift device and the transport cart on the entrance end of the upper transport travel route. Means are also provided on the transport carriage that has been sent to the upper transport travel path by the high speed delivery means and started to move at a constant speed by the transport carriage drive means, from above the horizontal road surface portion of the floor material for vehicle movement. A transporting device using a transporting carriage that is configured so that the transported vehicle can be transferred by self-propelling . The transport carriage lifting device on the exit side of the upper transport travel route is provided with high-speed pull-in means for pulling the transport cart from the upper transport travel route at a higher speed than the constant speed movement speed of the transport cart in the upper transport travel route. The horizontal road surface portion of the floor material for moving the vehicle from above the transport carriage moving at a constant speed by the transport carriage driving means before being pulled into the transport carriage lifting / lowering device from the upper transport travel path by the high speed retracting means . The transport apparatus using a transport carriage according to claim 1, wherein the transported vehicle is configured to be able to transfer by self-propelled.

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