JP2010214975A - Carriage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carriage for effectively improving a sealing property and sound insulation of a cabin only by carrying out relatively simple structural modification while continuously adopting a conventional drive mechanism of a slide door in the carriage. <P>SOLUTION: Front rails 51, 61 supporting a front part of the slide door 3 and rear rails 52, 62 supporting a rear part are vertically provided in pairs in the vicinity of an opening of a cabin. First ranges 51a, 61a, 52a, 62a guiding the slide door 3 in a fore and aft direction and second ranges 51b, 61b, 52b, 62b guiding the slide door 3 in an angled direction relative to the fore and aft direction are provided for the front rails 51, 61 and the rear rails 52, 62. The drive force of the air cylinder pulls the slide door 3 located at an opened position into a closed position to bring it into close contact with an edge of the opening and keeps that state, and also moves the slide door 3 located at the closed position into the opened position and keep that state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transport carriage that can effectively enhance the sealing performance and sound insulation performance of a cabin by using an opening / closing operation of a slide door.

  As this type of transport cart, there is known a large transport cart including a vehicle body frame supported by wheels and a cabin (driver's cab) disposed at an end of the vehicle body frame and having a driver's seat or the like installed therein. ing.

  This is for transporting super-heavy objects such as steel, building materials, and large containers in various locations such as warehouses, tunnels, and harbors. Unlike large automobiles and special vehicles, such large transport carts frequently move forward and backward, so the cabins are provided at both ends in the traveling direction, and workers can move to the front end side according to the traveling direction. Get into the cabin and drive the carriage. Since the frequency of transportation carts is not the ratio of ordinary vehicles, it is essential to ensure smooth entry / exit of workers, and considering that it should not hinder cargo handling, Some have a sliding door that is driven by an air cylinder and can be pulled out forward. Patent Document 1 discloses a special vehicle including such a sliding door, although the types of vehicles are different.

Japanese Utility Model Publication No. 5-85224

  By the way, such a sliding door is normally configured to perform a sliding operation between a position where the cabin opening is closed and a position where the cabin opening is opened along a straight rail using an air cylinder as a drive source. In other words, at the time of closing, the side edge on the closing side slides to a position where it closes the opening of the cabin, stops only by hitting a part of the periphery of the opening, and there are gaps around the door. For this reason, there exists a problem that the sealing property of the sliding door at the time of closing is low, the inside of a cabin is exposed to a loud noise, and the working environment is inferior.

  Although it is possible to adopt a door lock mechanism that pulls the sliding door in the thickness direction and engages the lock claw in the thickness direction, in this case, the lock claw is activated in addition to the lock claw. Mechanism is required, the structure is complicated, the number of parts is increased, the response at the time of failure becomes difficult, and the opening / closing speed of the sliding door is reduced.

  Some automobiles employ a sliding door that opens and closes the opening / closing opening by electric drive, and further includes a mechanism that locks the sliding door by pulling it into the edge of the opening at the closed position. However, the opening / closing speed is significantly reduced due to the electric drive, and the durability against high-frequency opening / closing operations is not taken into consideration, so there is no room for considering the possibility of application to this type of carriage. Absent.

  The present invention has been made paying attention to such a problem, and follows the conventional sliding door driving mechanism in this type of carriage, and the sealing performance of the cabin by only a relatively simple structural modification. The purpose of the present invention is to newly provide a transport cart that effectively improves the sound insulation and the work environment in the cabin.

  In order to achieve this object, the present invention takes the following measures.

  That is, the transport cart of the present invention includes a cart body that can travel on the road, a cabin that is disposed at both ends in the traveling direction of the cart body and has openings for getting on and off sideways, and an opening of the cabin. A sliding door that is slidable between a closed position and an open position, and an air-driven actuator that connects a part of the cabin and a part of the sliding door to open and close the sliding door. The front rail for supporting the front of the sliding door and the rear rail for supporting the rear are provided in pairs in the vicinity of the opening of the cabin, and the front rail and the rear rail are slid on the front rail and the rear rail. A first region for guiding the door in the front-rear direction and a second region for guiding the slide door in a direction having an angle with respect to the front-rear direction; Further, after the sliding door in the open position is moved along the first region, the slide door is drawn into the closed position along the second region to be brought into close contact with the edge of the opening, and the state is maintained and the closed door is in the closed position. After the slide door is pulled out along the second region, the slide door is moved to the open position along the first region, and the state is maintained.

  Here, “front” and “rear” refer to the forward direction as “front” and the reverse as “rear” based on the cabin. Therefore, the front and rear are reversed between the cabin located at one end of the carriage body and the cabin located at the other end. The front and rear rails are functional and need not be structurally separated.

  With the above configuration, the degree of contact between the sliding door and the edge of the opening can be increased using the opening / closing driving force, effectively improving the airtightness and sound insulation in the cabin even with a simple structure. Can be made. In addition, if the conventional air-driven actuator is used as it is and the shape of the rail is slightly modified compared to the conventional configuration, the door lock mechanism can be guided to the closed position and the sliding door cannot be opened at that position. Therefore, it is possible to effectively improve the airtightness and sound insulation of the cabin without requiring a significant design change, and it is possible to effectively ensure high speed and durability by air driving. Moreover, since the structure is not complicated unnecessarily, it is robust, and even if it is damaged, it does not have a door lock mechanism or the like, so that parts can be easily replaced.

  In order to adopt an air cylinder that moves the output end linearly in the actuator, considering that the slide door is displaced in the thickness direction, the driving force of this air cylinder is slid in the forward / backward direction of the air cylinder. It is effective to configure so that it is transmitted to the sliding door via a displacement absorbing portion that absorbs a change in the angle of the sliding direction of the door.

  In order for the sliding door to be taken out of the cabin in the open position so that the opening can be fully opened by the sliding door while effectively suppressing the amount of protrusion of the front rail from the cabin, the front end of the sliding door is used. Further, it is desirable that a front guide roller is provided at the rear side so that the front end portion of the slide door protrudes forward from the front rail at the open position.

  As the front guide roller is positioned as far back as possible, in order to ensure an appropriate guide width, the rear guide roller is taken out from at least one of the upper and lower parts on the rear end side of the slide door, and the rear guide roller Is preferably engaged with the rear rail.

  When taking out the rear guide roller through the bracket, in order to prevent the bracket from being exposed and impairing the appearance while avoiding interference between the bracket and the wall near the opening of the cabin, the opening of the cabin It is desirable to provide a storage portion for storing a bracket for taking out the rear guide roller on a wall portion in the vicinity, and to provide a shielding plate on the slide door side to hide the storage portion at the closed position.

  In order to more effectively enhance the sealing and sound insulation properties at the time of closing without disturbing getting on and off, the first elastic sealing member is provided on the upper edge portion and the left and right side edge portions of the cabin opening, A second elastic sealing member is provided at the lower edge portion on the inner surface side of the slide door, and the first elastic sealing member and the second elastic sealing member are continuously connected in a circular shape at the closed position of the slide door and are crushed. It is effective that the sliding door is configured to be in close contact with the edge of the opening in the state.

  Since the present invention has the above-described configuration, if the conventional air-driven actuator is used as it is, and if the shape of the conventional rail is slightly modified, the sliding door is guided to the closed position and the sliding door at that position. It is possible to realize a door lock function that prevents the door from being opened. For this reason, it is possible to effectively improve the airtightness and sound insulation of the cabin without requiring a significant design change or structural complexity, and also effectively ensure high speed and durability by air drive, It has the utility value as a transport cart with the environment improved easily and appropriately. Further, since a door lock mechanism or the like is not provided, repair or the like can be easily performed.

The schematic diagram which shows the conveyance trolley | bogie which concerns on one Embodiment of this invention. The expansion perspective view of the cabin periphery which comprises the conveyance trolley | bogie of the embodiment. The perspective view corresponding to FIG. 2 in the closed state of a slide door. The disassembled perspective view which shows the relationship between the guide roller and rail in the same embodiment. The fragmentary perspective view which shows the connection part of the air cylinder and slide door in the embodiment. The figure which shows the relationship between the lower guide roller and lower rail in the embodiment. The figure which shows the relationship between the upper guide roller and upper rail in the same embodiment. The typical sectional view showing the closing structure of the slide door and opening in the embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the transport cart according to this embodiment includes a cart body 1 that can travel on the road, a cabin 2 that includes a driver seat for driving the cart body 1, The sliding door 3 slidable between a closed position and an open position with respect to the opening 21, a part of the cabin 2 and a part of the sliding door 3 are connected to open and close the sliding door 3. And an air cylinder 4 which is an air-driven actuator.

  The cart body 1 is configured by supporting a high-strength frame 11 on a tire portion 12 so as to be able to move up and down in order to transport super-heavy objects such as steel, building materials, and large containers in warehouses, tunnels, and harbors. The In other words, the transport cart 1 moves under a portal transport platform (not shown) called a pallet on which transported items are loaded, lifts it with a frame 11, and keeps the state. The dolly body 1 is provided with a steering function so that a long vehicle can bend without difficulty. The frame 11 of the carriage main body 1 has a main horizontal frame portion 11b located at a position connecting the pair of hanging wall portions 11a and 11a as a main load region, and in addition to a tire portion 12 that controls a running function, an axle suspension spring 11c. And an elevating mechanism (not shown) are incorporated in a space under the carriage partially surrounded by the pair of hanging wall portions 11a and 11a and the main horizontal frame portion 11b. A part of the main horizontal frame portion 11b extends as an extension frame portion 11d outward from the hanging wall portion 11a, and it is also possible to load a load across the extension frame portion 11d and the main horizontal frame portion 11b. It is said that.

  Since such a transport cart repeats frequent traffic, the cabin 2 is provided at both ends in the traveling direction, and when an operator enters the cabin 2 positioned on the front end side in the traveling direction at an appropriate time, the cabin 2 moves forward and backward. It can be done without distinction.

  The cabin 2 is suspended and supported by the extension frame portion 11d of the bogie main body 1 via a suspension spring 21. The cabin 2 is equipped with a driver's seat 20 including a seat for an operator to drive and equipment necessary for operation. ing. That is, the cabin 2 is suspended from the extension frame 11d in an overhanging state in front of the hanging wall portion 11a of the cart body 1 and is independent of the cart body 1.

  As shown in FIG. 2, the cabin 2 is formed by a rear wall portion 22, a side wall portion 23, a bottom wall portion 24, a top wall portion 25 and a front wall portion 26, and is located on the left and right sides in the traveling direction. An opening 21 through which a worker gets on and off one side of the side wall 23 is provided in a substantially rectangular shape. The cabin 2 is independent from the carriage body 1 as described above, and the opening / closing mechanism for the slide door 3 must be completed in the cabin 2, and the slide door 3 is positioned forward so as not to hinder cargo handling. Must be opened. Based on this, front rails 51 and 61 and rear rails 52 and 62 are provided in the vicinity of the opening 21 as shown in FIG. 2 and FIG. Here, “front” and “rear” are based on the direction in which an operator gets into the cabin 2 and moves forward, and the cabin 2 is located at one end of the carriage body 1 and the cabin 2 is located at the other end. And the context is reversed.

  The front rails 51 and 61 and the rear rails 52 and 62 in this embodiment are channel-shaped downwards, and first regions 51a, 61a, 52a, 62a that extend linearly in the front-rear direction, and the first regions 51a, 61a. , 52a, 62a and second regions 51b, 61b, 52b, 62b extending rearward and gradually changing the angle while curving toward the cabin 2 toward the rear. As shown in FIG. 2, the lower front rail 51 and the lower rear rail 52 are concealed by a cover 5a so as not to be visually recognized from above, and wheels 71b and 72b described later roll around these rails 51 and 52. The rolling surface 5b for making it form is formed. The cabin 2 has a structure in which the front wall portion 26 including the windshield is inclined like the interior of the automobile, and the bottom wall portion 24 is wider in the front-rear direction than the top wall portion 25. Accordingly, the total rail length from the lower front rail 51 to the lower rear rail 52 of the bottom wall portion 24 substantially corresponds to the longitudinal dimension of the bottom wall portion 24 of the cabin 2, whereas the upper portion of the top wall portion 25. The total rail length from the front rail 61 to the upper rear rail 62 does not fit within the longitudinal dimension of the top wall portion 25 of the cabin 2. For this reason, as shown in FIG. 2, the upper front rail 61 protrudes from the cabin 2 in a range that does not protrude from the extension frame 11d of the carriage body 1 and is positioned below the extension frame 11d. The upper rails 61 and 62 are also provided with a cover 5c according to the cover 5a.

  The slide door 3 has a width and height sufficient to close the opening 21, and as shown in FIGS. 2, 4, 6 and the like, a bracket 72 is provided at the rear end of the lower end side. The lower rear guide roller 72a and the rear wheel 72b are taken out rearward (d1: the amount of the lower rear guide roller 72a taken out in FIG. 6A, d2: the amount of the rear wheel 72b taken out), and the rear end portion on the upper end side. In FIG. 7, the upper rear guide roller 82a is taken out rearward via the bracket 82 (d3 in FIG. 7A: the amount of the rear guide roller 82a taken out). Further, a lower front guide roller 71a and a front wheel 71b are arranged directly below the slide door 3 via a bracket 71 from the rear of the front end portion on the lower end side of the slide door 3 (d4 in FIG. 6A). : Rearward displacement amount of lower front guide roller 71a, d5: rearward displacement amount of front wheel 71b), upper front guide roller 81a is disposed via bracket 81 behind the front end portion on the upper end side. There is (d6 in FIG. 7A: the amount of displacement of the upper front guide roller 81a to the rear). The lower rear guide roller 72a is perpendicular to the lower rear rail 52, the upper rear guide roller 82a is perpendicular to the upper rear rail 62, the lower front guide roller 71a is perpendicular to the lower front rail 51, and the upper front guide roller 81a is perpendicular to the upper front rail 61. They are engaged so as to be able to roll around an axis. The wheels 71b and 72b are grounded to the rolling surface 5b in the vicinity of the lower rails 51 and 52 so as to roll around the horizontal axis.

  That is, the guide rollers 71a, 72a, 81a, and 82a are respectively connected to the corresponding rails 51, 52, 61, and 62 from the opening position shown in FIGS. 2, 6A, and 7A with respect to the opening 21. The slide door 3 is moved backward while being guided by the first areas 51a, 52a, 61a, and 62a to be guided to the second areas 51b, 52b, 61b, and 62b, and the slide door 3 is further translated in an oblique direction. By pulling in the thickness direction, the opening 21 is moved to the closing position at the closing position shown in FIGS. 3, 6B, and 7B. At the closed position of the slide door 3, the interior of the cabin of the cabin 2 is closed. During this time, the wheels 71b and 72b roll on the rolling surface 5b to support the load of the slide door 3, and in the second regions 51b, 61b, 52b and 62b, the wheels 71b and 72b are between the rolling surface 5b. The angle change in the sliding direction of the sliding door 3 is allowed by sliding. Note that straight portions 51x, 61x, 52x, and 62x are provided at the end portions closer to the closing side than the curved portions of the second regions 51b, 61b, 52b, and 62b, thereby reducing backlash in the width direction when the slide door 3 is closed. To play a role. When opened, the reverse operation is performed.

  In this embodiment, since the bracket 72 for taking out the rear lower guide roller 72a and the rear wheel 72b protrudes rearward from the slide door 3, the rear side wall adjacent to the opening 21 of the cabin 2 as shown in FIG. 23 is provided with a storage portion 23a for storing the bracket 72, and the bracket 72 is provided with a shielding plate 72c that forms an elevation surface at a position where at least a part of the storage portion 23a is closed at the closed position of the slide door 3 shown in FIG. And is attached to the slide door 3 side. Similarly, the rear upper guide roller 82a protrudes rearward from the slide door 3 with the bracket 82 for taking out the upper guide roller 82a. Therefore, the storage portion 23b for storing the bracket 82 in the rear side wall 23 adjacent to the opening 21 of the cabin 2. A shielding plate 82c that forms an elevation surface at a position that closes at least a part of the storage portion 23a at the closed position is integrated with the bracket 82 and attached to the slide door 3 side. The shielding plates 72c and 82c are shaped so as not to invade the opening 21 as much as possible in a fully open state. Of course, the shielding plates 72c and 82c may be provided separately from the brackets 72 and 82.

  Further, the cabin 2 has a limited front-rear dimension, and the slide door 3 is retracted from the opening 21 to fully open the opening 21, and the front end of the slide door 3 is a front rail 51, The state of urging forward from 61 (L in FIG. 2: urging amount). Therefore, as described with reference to FIGS. 6A and 7A, the lower front guide roller 71a and the upper front guide roller 81a are provided behind the front end portion of the slide door 3, and are in the open position. Thus, the engaged state with the lower front rail 51 and the upper front rail 61 is maintained.

  The air cylinder 4 is configured to be supplied with air from an unillustrated cargo driving air pump (for example, an air pump for braking during cargo handling operation) provided in the cart body 1, and is shown in FIGS. 2 and 5. As described above, the longitudinal direction is arranged so as to coincide with the front-rear direction of the cabin 2, the base end is fixed to a part of the cabin 2, and is linear along the extending direction of the first regions 51 a, 52 a, 61 a, 62 a The output end 41 that moves forward and backward is connected to the upper part on the front end side of the slide door 3 via the power transmission portion 8a. At that time, as shown in FIGS. 7A and 7B, the sliding door 3 is displaced in the thickness direction when the sliding door 3 is in the open position and when it is in the closed position. On the other hand, since the position of the axis n of the air cylinder 4 is constant, it is necessary to absorb the displacement in the thickness direction when the slide door 3 is pulled in the power transmission portion 8a.

  Therefore, as shown in FIG. 5, the power transmission unit 8 a is attached to the upper part of the front end side of the slide door 3 so as to be rotatable about the vertical axis m <b> 1, and the first movable bracket 80. A second movable bracket 83 attached to the pivot end so as to be pivotable about the vertical axis m2, and a connecting portion 84 provided in a part of the second movable bracket 83 and penetrating and holding the output end 41 of the air cylinder 4. As the slide door 3 is displaced toward the cabin 2, the first movable bracket 80 rotates from the state shown in FIG. 7A to the state shown in FIG. 7B, thereby moving the second movable bracket 83 to the slide door. 3 is taken out in the thickness direction so that the position and posture of the connecting portion 84 are appropriately maintained with respect to the axis n of the air cylinder 4. The second movable bracket 83 is provided with an auxiliary guide roller 83a at a position where the slide door 3 is released from the upper front rail 61 when the slide door 3 is opened. The auxiliary guide roller 83a is engaged with the upper front rail 61 on the way from the open position shown in FIG. 7A to the closed position shown in FIG. It plays a role of maintaining the posture of the provided connecting portion 84 appropriately in relation to the air cylinder 4. For this reason, the driving force from the air cylinder 4 is efficiently transmitted to the slide door 3. The power transmission part 8a constitutes a displacement absorbing part of the present invention.

  When the air cylinder 4 is driven, in the vicinity of the opening 21 in the side wall 23 of the cabin 2 shown in FIG. 2 and the like, it is not shown for switching the door open state and the door closed state between the outer surface side and the inner surface side. A switch is provided, and when an operator gives an instruction to open the door, air pressure is supplied to the air cylinder 4 to cause the output end 41 to protrude, hold it at the operating end in the protruding direction, and to instruct the door to close The air in the air cylinder 4 is sucked out so that the output end 41 is immersed and held at the operating end in the immersion direction. The holding force may continue to operate the air cylinder 4, but is easily realized by shutting off the air supply / exhaust path to the air cylinder 4 with a valve to make the air cylinder 4 sealed. be able to.

  Further, as shown in FIG. 8A, the opening 21 of the cabin 2 is provided with first elastic sealing members 91a and 91b at the upper edge 21a and the left and right side edges 21b, and a sliding door. A second elastic sealing member 91c is provided on the lower edge portion 3 on the inner surface side of the first elastic member 3, and when the slide door 3 is moved to the closed position as shown in FIGS. The sealing members 91 a and 91 b and the second elastic sealing member 91 c are continuously connected in a circular shape, and the slide door 3 is brought into close contact with the edge of the opening 21 in a state where the sealing members are crushed. Therefore, the sliding door 3 is in a close contact state so as to bite into the opening 21 at the closed position. One side edge 21b of the opening 21 (side edge 21b on the front side in FIG. 8) indicates that a foreign object has been sandwiched between the slide door 3 and the slide door 3 when the slide door 3 performs the closing operation. A sensor (not shown) is provided for detecting and emergency opening of the sliding door 3.

  In the above, the brackets 71, 72, 81, 82, 80 and the rails 51, 52, 61, 62, etc. have a bolt mounting structure so that they can be easily repaired even in the event of damage or deformation. The cabin 2 has a 5mm thick sponge and a 20mm thick sound-absorbing material, and the driver's seat floor mat in the cabin 2 uses a floor mat with a soundproof pad with high sound insulation. It is.

  The transport cart configured as described above can easily get on and off by making the sliding door 3 fully open even when the side space of the cabin 2 is narrow, and adopting the air cylinder 4 A quick opening / closing operation of the slide door 3 can be obtained by obtaining a high driving force.

  In the vicinity of the opening 21 of the cabin 2, front rails 51, 61 that support the front of the slide door 3 and rear rails 52, 62 that support the rear are provided in pairs, and these front rails 51. , 61 and the rear rails 52, 62, first regions 51a, 61a, 52a, 62a for guiding the slide door 3 in the front-rear direction and second regions for guiding the slide door 3 in an angled direction with respect to the front-rear direction. 51b, 61b, 52b, 62b are provided, and the second region 51b, after the slide door 3 in the open position is moved along the first regions 51a, 61a, 52a, 62a by the driving force of the air cylinder 4. 61b, 52b, and 62b are pulled into the closed position and brought into close contact with the edge of the opening 21 to maintain the state, and the sliding door 3 in the closed position is 2 regions 51b, 61b, 52b, the first region 51a after drawer along 62b, 61a, 52a, is moved to the open position along the 62a, so as to maintain its state.

  Thus, since the close contact degree between the slide door 3 and the edge of the opening 21 is increased by using the opening / closing driving force of the air cylinder 4, the airtightness and sound insulation in the cabin 2 can be effectively improved. it can. In addition, if the conventional air cylinder 4 is used as it is and a slight improvement is made to change the shape of the rails 51, 52, 61, 62 to the conventional configuration, the guide to the closed position and the slide at that position are possible. Since it can act as a lock mechanism that prevents the door 3 from being opened, there is no need to make a significant design change in order to effectively improve the sealing performance and sound insulation performance, and the high-speed drive performance by the air cylinder 4 is also effective. Can be secured. In addition, since it does not complicate the structure unnecessarily, it is robust and has a simple structure that does not have a door lock mechanism even if it is damaged. Repair such as replacement can be easily performed.

  Since the sliding door 3 also moves parallel to the cabin 2 from an oblique direction, the sliding door 3 can be evenly pressed against the edge of the opening 21 and a well-balanced sealing state can be obtained. it can.

  In particular, when the air cylinder 4 that linearly moves the output end 41 forward and backward is used as the actuator that drives the slide door 3, the driving force of the air cylinder 4 is used to slide the slide door 3 in the forward and backward direction of the air cylinder 4. Since it transmits to the said slide door 3 via the displacement absorption part 8a which absorbs the angle change of a direction, the slide door 3 is the 1st area | region 51a, 61a, 52a, 62a with respect to the axis n of the air cylinder 4. The power of the air cylinder 4 can be reliably transmitted to the slide door 3 via the displacement absorbing portion 84 even if it is displaced in the thickness direction in FIG. It is something to squeeze.

  In addition, since the front and rear dimensions of the cabin 2 are small, the transport carriage according to the present embodiment is configured such that the slide door 3 is taken forward from the cabin 2 at the open position, but from the front end of the slide door 3. Since the front guide rollers 71a and 81a are provided from the rear, the guide rollers 71a and 81a are positioned as far back as possible even when the slide door 3 is moved to the open position where the opening 21 is fully opened. It is possible to effectively secure a state in which the rails 51 and 62 do not get in the way by effectively suppressing the protruding amounts of the 51 and 61 from the cabin 2.

  Further, the rear guide rollers 72a and 82a are taken out rearward from the rear end side of the slide door 3, and the rear guide rollers 72a and 82a are engaged with the rear rails 52 and 62, and the front guide rollers 71a, As the 81a is positioned as far back as possible, the rear guide rollers 72a and 82a are positioned as far back as possible, thereby ensuring an appropriate guide width and stabilizing the sliding operation. It is the same meaning that the maximum contact width is realized by positioning the wheels 71b and 72b as far as possible.

  The side wall 23 near the opening 21 of the cabin 2 is provided with storage portions 23a and 23b for storing the brackets 72 and 82 for taking out the rear guide rollers 72a and 82a and the rear wheels 72b. Since the shielding plates 72c and 82c for blinding 23a and 23b are provided on the slide door 3 side, the guide width by the guide rollers 72a and 71a, the guide width by the guide rollers 82a and 81a, and the ground contact width by the wheels 71b and 72b are as close as possible. Even if it is ensured, the appearance of the cabin 2 can be effectively adjusted, and the reliability can be improved by not exposing the mechanical parts to the outside as much as possible.

  Furthermore, first elastic sealing members 91a and 91b are provided on the upper edge portion 21a and the left and right side edge portions 21b of the opening 21 of the cabin 2, and the second edge portion 3a on the inner surface side of the slide door 3 is provided with a second edge. An elastic sealing member 91c is provided, and the first elastic sealing members 91a, 91b and the second elastic sealing member 91c are continuously connected in a circular shape at the closed position of the slide door 3, and the slide door 3 is crushed. Since it is made to contact | adhere to the edge part of the opening part 21, the sealing property of the cabin 2 at the time of closing and sound insulation property are made more effective, making an elastic sealing member not exist in the position which gets in and out of an operator Can be increased.

  In addition, in the present embodiment, in view of the extension frame portion 11d extending from the hanging wall portion 11a located at the end of the cart body 1, and the cabin 2 is supported by the extension frame portion 11d, Since the upper front rail 61 protrudes from the cabin 2 along the extension frame 11d so as not to protrude from the extension frame 11d and is positioned below the extension frame 11d, the upper front rail 61 is provided in an unobstructed state. It can be effective.

  Further, in this embodiment, the carriage main body 1 has an air pump that bears a part of the cargo handling drive, and the air of this air pump is supplied to the air cylinder 4, so that it is not necessary to bring in a power source separately. Therefore, it can be effectively adapted to the purpose of utilizing the structure of the conventional transport carriage as much as possible.

  The specific configuration of each unit is not limited to the above-described embodiment.

  For example, the lower front rail and the lower rear rail, and the upper front rail and the upper rear rail may be configured to be connected in series.

  Further, as another configuration of the displacement absorbing portion, it is possible to adopt a mode in which the base end of the air cylinder is rotatably attached to a part of the cabin.

  In addition, various modifications can be made without departing from the spirit of the present invention, such as adopting an air-driven actuator other than the cylinder structure.

DESCRIPTION OF SYMBOLS 1 ... Carriage body 21 ... Opening part 2 ... Cabin 3 ... Sliding door 3a ... Lower edge part 4 ... Actuator (air cylinder)
21a ... Upper edge 21b ... Side edge 23 ... Wall (side wall)
23a, 23b ... storage unit 41 ... output end 51 ... front rail (lower front rail)
51a ... 1st field 51b ... 2nd field 52 ... Rear rail (lower rear rail)
52a ... 1st field 52b ... 2nd field 61 ... Front rail (upper front rail)
61a ... 1st field 61b ... 2nd field 62 ... Rear rail (upper rear rail)
62a ... 1st field 62b ... 2nd field 8a ... Displacement absorption part (power transmission part)
71a: Front guide roller (lower front guide roller)
72a ... Rear guide roller (lower rear guide roller)
72c: shielding plate 81a: front guide roller (upper front guide roller)
82a ... Rear guide roller (upper rear guide roller)
82c ... Shielding plates 91a, 91b ... first elastic sealing member 91c ... second elastic sealing member

Claims (6)

A carriage main body capable of traveling on the road, a cabin disposed at both ends in the traveling direction of the carriage main body and having openings for getting on and off laterally, and a closed position and an open position with respect to the opening of the cabin. Comprising a sliding door slidable between, and an air-driven actuator that connects a part of the cabin and a part of the sliding door to open and close the sliding door,
A front rail that supports the front of the sliding door and a rear rail that supports the rear are provided in pairs near the opening of the cabin, and the sliding door is guided to the front and rear rails in the front-rear direction. And a second region for guiding the slide door in a direction having an angle with respect to the front-rear direction, and the sliding door in the open position is moved along the first region by the driving force of the actuator. After that, it is drawn along the second region to the closed position and is brought into close contact with the edge of the opening, and the state is maintained, and the slide door at the closed position is pulled out along the second region and then along the first region. The carriage is configured to move to the open position and maintain the state. The actuator is an air cylinder that linearly moves the output end forward and backward, and the sliding door receives the driving force of the air cylinder via a displacement absorbing portion that absorbs a change in the sliding direction of the sliding door with respect to the forward and backward direction of the air cylinder. The transport cart according to claim 1, wherein the transport cart is transmitted to the vehicle. When the sliding door is configured to be taken out of the cabin forward in the open position, a front guide roller is provided behind the front end of the sliding door, and the front end of the sliding door is forward of the front rail in the open position. The transport carriage according to claim 1 or 2, wherein the transport carriage is in a state of projecting to the top. 4. The transport carriage according to claim 3, wherein a rear guide roller is taken out rearward from at least one of the upper and lower portions on the rear end side of the slide door, and the rear guide roller is engaged with the rear rail. 5. A storage portion for storing a bracket for taking out the rear guide roller is provided on a wall near the opening of the cabin, and a shielding plate for concealing the storage portion in the closed position is provided on the slide door side. Transport cart. A first elastic sealing member is provided at the upper edge portion and the left and right side edge portions of the cabin opening, and a second elastic sealing member is provided at the lower edge portion on the inner surface side of the sliding door at the closed position of the sliding door. 6. The slide door is brought into close contact with the edge of the opening in a state where the first elastic sealing member and the second elastic sealing member are continuously connected in a circular shape and are crushed. The conveyance cart in any one.

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