JP2006137576A - Vehicle for high lift work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle for high lift work provided with a protection wall capable of being extended together with a platform while suppressing a clearance formed in the vicinity of a target position to the small clearance. <P>SOLUTION: A lift truck 100 is provided with a container 140 having two door bodies 210 opened to the left and right sides and the platform 160 stretched from the inside of the container 140 toward a loading port 10a of a machine body 10. The door body 210 is provided with two protection walls 220, 230 which are stored by overlapping mutually when closing the inside of the container 140 and are pulled out of the door body 210 toward the loading port 10a when opening the container 140 to form the protection walls on the platform 160. The protection wall 230 is provided with three miniature protection walls 1 which are arranged in the direction of height of the protection wall 230 in parallel, are stored by overlapping mutually when closing the inside of the container 140, and are pulled out of the protection wall 230 toward the loading port 10a when opening the container to form the protection walls. An auxiliary panel 2 is held on this miniature protection wall 1 so as to swing freely. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a protective wall for protecting an operator on a platform when the platform is passed from the opening of the container formed by opening the left and right doors of the container toward the target position to load / unload luggage. The present invention relates to an aerial work platform equipped.

  When loading food and luggage from the container into the aircraft, the platform is loaded from the container opening to the loading opening (target position) to load and unload the luggage, but the loading opening of the aircraft is relatively high Therefore, it is necessary to protect the workers on the platform from crosswinds.

For this reason, the applicant of the present application has already been stored in each door body of the left and right doors of the container so as to overlap the outside of the door body when the container is closed, and pulled out from the outside of the door body toward the mounting opening when the container is opened. An aerial work vehicle having at least one panel forming a protective wall on the platform has been proposed.
Japanese Patent No. 355,020

  On the other hand, depending on the shape of the fuselage, it may be necessary to carry in and out of luggage and the like from a further distance. In this case, it is necessary to further extend the protective wall together with the platform.

  On the other hand, since the loading port of an aircraft has a special shape with a curved surface, when a protective wall is formed by pulling out a panel having the same shape as the door from the door as in the past, depending on the shape of the aircraft Some gaps may be formed between the protective walls. Although such a gap does not cause trouble for the purpose of protecting the worker, it is also considered to give anxiety to the worker. Therefore, it is preferable to keep such a gap as small as possible.

  The problem to be solved by the present invention is based on the fact recognition described above, and is a work in high places with a protective wall that can be extended together with the platform while keeping the gap formed near the target position small. The idea is to propose a car.

  The invention according to claim 1 is a container having two door bodies arranged on the left and right sides, a platform spanned from an opening of the container formed by opening the door bodies toward a target position, and the container can be raised and lowered. In an aerial work vehicle comprising a carriage to be held on the side of the door body, the door body is juxtaposed in the height direction of the door body and overlapped when closing the opening of the container, and the door when opening the opening of the container At least two mini-panels that are pulled out from the body toward a target position and form a protective wall on the platform are provided.

  According to a second aspect of the present invention, in the first aspect, an auxiliary panel is provided on a side surface of the mini panel so as to be swingable with respect to the mini panel.

  According to a third aspect of the present invention, in the second aspect, the auxiliary panel has a swinging portion of the auxiliary panel below the auxiliary panel so that the auxiliary panel can be swung by its own weight, and the mini panel is mounted on the auxiliary panel. When storing in the door body, contact the door body and swing the auxiliary panel against its own weight to store the auxiliary panel in the mini panel and pull out the mini panel from the door body. A contact member is provided that is spaced apart and swings the auxiliary panel by its own weight.

  According to a fourth aspect of the present invention, in the second or third aspect, the mini-panel includes a cutout portion formed by cutting out a corner located in the swinging direction of the auxiliary panel.

  The invention according to claim 5 is characterized in that, in any one of claims 1 to 4, a lock mechanism is provided between the door body and the mini panel to restrict the mini panel from popping out. To do.

  The invention according to claim 6 is a container having two doors that open to the left and right, a platform that is spanned from an opening of the container formed by opening the doors toward a target position, and the container can be raised and lowered. In an aerial work vehicle including a holding carriage, the door body is stored so as to overlap when the opening of the container is closed, and when the opening of the container is opened, the door body is pulled out from the door body toward a target position and placed on the platform. At least one panel forming a protective wall is provided, and among the panels, the panel that is drawn farthest from the door body is juxtaposed in the height direction of the panel, and is overlapped and stored when the opening of the container is closed. When opening the opening of the container, the container is pulled out from the panel toward the target position, and the platform is opened. It is characterized in providing the at least two mini-panels to form a protective barrier on the arm.

  The invention described in claim 7 is characterized in that, in claim 6, an auxiliary panel is provided on a side surface of the mini panel so as to be swingable with respect to the mini panel.

  The invention according to claim 8 provides the auxiliary panel according to claim 7, wherein the auxiliary panel has a swinging portion of the auxiliary panel below the auxiliary panel to enable swinging by its own weight, and the mini panel is mounted on the auxiliary panel. When the panel is stored in the panel, the panel touches the panel and swings the auxiliary panel against its own weight to store the auxiliary panel in the mini panel, and when the mini panel is pulled out from the panel, the panel is separated from the panel. A contact member for swinging the auxiliary panel by its own weight is provided.

  A ninth aspect of the present invention is characterized in that, in the seventh or eighth aspect, the mini-panel includes a notch portion in which a corner portion located in the swinging direction of the auxiliary panel is notched.

  According to a tenth aspect of the present invention, in any one of the sixth to ninth aspects, a lock mechanism is provided between the panel and the mini panel to restrict the mini panel from popping out. Is.

  An eleventh aspect of the invention according to any one of the first to tenth aspects is characterized in that the carriage includes a drive source such as an engine and a cab.

  In the present invention, when opening the container opening by arranging at least two mini-panels in the height direction of each door body arranged on the left and right or the side surface of the panel that can be taken in and out from the door body, respectively. After opening each door, or pulling out the panel from the door at the same time as opening each door, pulling each mini panel individually toward the target position, the container opening and the target position A protective wall can be formed on the platform spanned between them to prevent crosswind and fall. According to such a configuration, even when the platform is longer than the door body, it is possible to prevent a cross wind or a drop received on the platform.

  In addition, in this case, by pulling out each mini panel independently from the door body or panel, the gap formed between the protective wall and the vicinity of the target position can be kept small. Comfortable work can be realized without giving.

  Furthermore, in this case, when the container opening is closed, the mini-panels are stored on the side surfaces of the doors arranged on the left and right sides, so that the mini-panels interfere with each other when the two doors arranged on the left and right sides are closed. The opening of the container can be closed without any problem, and the size can be reduced.

  Further, in the present invention, particularly when at least one panel is provided on each side surface of each door body arranged on the left and right sides, and when at least two mini-panels are juxtaposed in the height direction of this panel, the platform can be separated from the door body. Even when the panel is longer than the pulled-out panel, it is possible to prevent crosswinds and drops received on the platform.

  By the way, in this invention, it is preferable to provide the auxiliary panel hold | maintained so that rocking | fluctuation with respect to this mini panel is provided in the side surface of a mini panel. According to such a configuration, since a gap formed between the protective wall and the vicinity of the target position is further reduced, a more comfortable work can be realized. In particular, in this case, the swinging portion of the auxiliary panel is arranged on the lower side of the auxiliary panel to enable swinging by its own weight, and when the mini panel is stored in the door body or the panel, When the auxiliary panel is abutted and swung against its own weight to house the auxiliary panel in the mini-panel and the mini-panel is pulled out of the door or the panel, the auxiliary panel is separated from the door or the panel. If an abutting member that swings by its own weight is provided, the auxiliary panel is automatically pulled out and stored in synchronism with the mini-panel being pulled out and stored from the door body or panel. In addition, work required for storage can be omitted, and work efficiency can be improved. Further, in this case, it is preferable that the mini panel is provided with a notch portion in which a corner portion located in the swinging direction of the auxiliary panel is notched. According to such a configuration, the swing range of the auxiliary panel with respect to the mini panel can be secured widely, and the gap formed between the protective wall and the vicinity of the target position can be minimized, so that more comfortable work can be performed. Can be realized.

  Further, in the present invention, the mini-panel is restricted from protruding from the door body or the panel between the door body and the mini-panel or between the panel and the mini-panel. If the lock mechanism is provided, it is possible to prevent the mini-panel from popping out from the door body or panel during the movement as a vehicle and interfering with the peripheral portion.

  Furthermore, in the present invention, if a drive source such as an engine and a driver's cab are provided integrally or separately with respect to the cart to which the container is attached, the mobility as an aerial work vehicle is improved. Improvement can be achieved.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the direction in which the cab is located is defined as the front, and the vertical and horizontal directions are defined as directions viewed from the driver.

  FIG. 1 is a side view showing a lift truck 100 which is an embodiment of the present invention and has a box-type loading platform which is used in an airport or the like and mounts an in-flight meal or the like in an airframe 10 from an aircraft loading port (target position) 10a. FIG.

  As shown in FIG. 1, the lift truck 100 includes a self-propelled chassis (cart) 120 having a driver's cab 110 in front, and a pantograph link mechanism 130 provided on a chassis frame 121 mounted on the chassis 120. And a container 140 that moves up and down on the chassis 120 by the link mechanism 130. Stabilizing hydraulic jacks 122 are provided at four positions on the front and rear, left and right of the chassis frame 121 in order to ensure stability against wind pressure when the box-type cargo bed 140 is raised.

  The link mechanism 130 is attached between two side links 131 and 132, two outside links 131 arranged side by side and two inside links 132 arranged side by side, a link shaft 133 that supports the side links 131 and 132 rotatably. And a hydraulic lift cylinder 134.

  The outside links 131 are integrally connected to each other in the vicinity of their upper ends by a front axis X1, and the lower ends thereof are supported so as to be movable along the chassis frame 121. The inside links 132 are also integrally connected in the vicinity of their upper ends by a rear axis X2, and their lower ends are fixedly held on the chassis frame 121 by a fixed axis X3. Each of the front shaft X1 and the rear shaft X2 is spanned over a rectangular cargo bed frame 141 that holds the box-type cargo bed 140. Between the cargo bed frame 141 and the container 140, there is a straight line made up of rollers, rails, and the like. A moving mechanism is provided, and the container 140 is supported so as to be movable along the cargo bed frame 141.

  The hydraulic lift cylinder 134 expands and contracts when an operator operates an up button or a down button (not shown) of the control panel Cp disposed on the chassis 120. As a result, when the driver pushes the raising button of the control panel Cp to raise the container 140, the cross link mechanism 130 extends the hydraulic lift cylinder 134 for the duration of the pushing operation. In contrast, the container 140 can be raised and lowered. Similarly, when the driver presses the lowering button of the control panel Cp to lower the container 140, the hydraulic lift cylinder 134 is contracted while the pushing operation continues, so the container 140 is lowered with respect to the chassis 120. Can be made. As a result, the cross link mechanism 130 can move up and down while maintaining the container 140 in a state parallel to the road surface with respect to the chassis 120 by expansion and contraction of the hydraulic lift cylinder 134.

  In front of it, the container 140 has a platform 160 that is telescopic in the forward direction of the vehicle for loading food and luggage on the aircraft. The platform 160 is configured such that the sub-platform 162 is pulled out of the main platform 161 or the main platform 161 by an operator operating a drawer button or a storage button (not shown) of a control panel (not shown) disposed in the container 140. It is stored in the platform 161. In a normal state such as when the vehicle is running, the platform 160 is supported in contact with a gantry 123 fixed to the chassis frame 121 and is placed at a predetermined upper position in the cab 110 as shown in region A of FIG. Is done.

  Here, brackets 163 are integrally provided on both side surfaces of the platform 160, respectively. In addition, rollers (not shown) are attached to the brackets 163, respectively, and these rollers are further attached to two guide rails (posts) 164 extending upward from both front side surfaces of the container 160, respectively. Thus, since the guide rail 164 moves relative to the platform 160 when the container 140 starts to rise, the container 140 is raised while maintaining the platform 160 at the position shown in the region A of FIG. When the height of the floor surface of 140 coincides with the floor surface height of the platform 160, the platform 160 comes into contact with the lower end of the guide rail 164 and is fixedly held in the container 140. Ascend to one.

  FIG. 2 is an enlarged view of a main part showing FIG. 1 from the direction D1, and FIG. 3 shows one (left side) of a platform protection wall 200 (described later) formed on the left and right sides of the platform 160 from within the platform 160 It is a side view.

  In FIG. 2, reference numerals 210 are doors having a double door structure provided on the front surface of the container 140, and these door bodies 210 are operations for loading and unloading luggage into the container 140 via hinges H1, respectively. It is rotatably attached to a rectangular frame 142 that forms a mouth (opening) 140a.

  The door 210 may be opened and closed manually, but in this embodiment, the upper beam portion of the rectangular frame 142 of the container 140, the door 210, and the retractable actuator 201 are respectively swung through the pin members P1 and P2. It is provided freely. The actuator 201 expands and contracts by pressing a button disposed on a control panel (not shown) in the container 140. Thus, each door 210 can open the work port 140a of the container 140 and close the work port 140a of the container 140 only by operating a button in the container 140.

  That is, the door 210 is pulled out toward the loading port 10a of the airframe 10 when the operator operates the button in the container 140 after the floor height of the container 140 matches the floor height of the platform 160. To form a first platform barrier (hereinafter referred to as “first barrier”). Each door body 210 is provided with a packing (not shown), and maintains the airtightness in the container 140 in the closed state shown by the solid line in FIG. In addition, each door 210 can be fixed to the platform 160 by inserting a pin member or the like after opening the hinge H1 as a base point.

  Reference numeral 220 denotes a panel arranged outside the door body 210. When the door body 210 is closed, it is stored so as to overlap the outer surface of the door body 210 as shown in FIG. As shown in FIG. 3, the second platform protective wall (hereinafter referred to as “second protective wall”) is pulled out from the outer surface of the door body 210 toward the mounting port 10 a (target position) of the airframe 10 and on the platform 160. Form.

  The second protective wall 220 may be stored or pulled out manually, but in this embodiment, an extendable actuator 202 is provided between the first protective wall 210 and the second protective wall 220 as shown in FIG. ing. This actuator 202 is also expanded and contracted by pressing a button arranged on a control panel (not shown) in the container 140. As a result, each of the second protective walls 220 can be pulled out of the first protective wall 210 just by operating a button in the container 140, and can be stored outside the first protective wall 210 in an overlapping manner.

  Reference numeral 230 is also a panel disposed outside the second protective wall 220, and when the door body 210 is closed, the second protective wall 220 and the outside of the door body 210 are overlapped and housed as shown in FIG. When the door 210 is opened, it is pulled out from the second protective wall 220 toward the loading port 10a of the airframe 10 as shown in FIG. .).

  4 (a) and 4 (b) are front views showing the first to third protective walls 210 to 230 from the directions of arrows D2 and D3 in FIG. The operation of 230 will be described below using the left door 210 shown in FIGS.

  As shown in FIG. 3, the second protective wall 220 is disposed between the first protective wall 210 and the first protective wall 210 along the two first guide mechanisms 300 juxtaposed in the height direction. Slide back and forth. As shown in FIG. 4, the guide mechanism 300 includes a first guard wall side guide rail 310 provided outside the first guard wall 210 and extending along the platform 160, and a platform guard 160 provided inside the second guard wall 220. The second protection wall side guide rail 320 extends along the guide rails 310 and 320, and the first slide member 330 moves along the guide rails 310 and 320.

  The first protective wall side guide rail 310 and the second protective wall side guide rail 320 are offset in the height direction of the panel (door body) as shown in FIGS. Further, as shown in FIG. 3, the first slide member 330 has a substantially rhomboid side surface, and as shown in FIG. 4, two rollers 331 provided inside the first slide member 330 are provided with the first protective wall 210. The two rollers 332 provided outside the first slide member 330 are movably held by the guide rail 320 of the second protective wall 220. Further, although not described in detail, stoppers S (see FIG. 6) are provided at both ends of the guide rail 310 and the guide rail 320, respectively.

  Thus, the second protective wall 220 is slidably held outside the first protective wall 210 via the two guide mechanisms 300 juxtaposed in the height direction. Note that the slide member 330 according to this embodiment is held by the rollers 331 and 332 with respect to the guide rails 310 and 320, respectively, but these rollers 331 and 332 are friction elements that simply slide on the guide rails 310 and 320. May be replaced. The guide mechanism 300 may be provided with guide rails on both sides of the slide member 330, and the guide rails 310 and 320 may be replaced with rollers or friction elements.

  Similarly, as shown in FIG. 3, the third protective wall 230 slides in the front-rear direction of the vehicle along the two second guide mechanisms 400 juxtaposed in the height direction with the second protective wall 220. As shown in FIG. 4, the guide mechanism 400 includes a second guard wall side guide rail 410 provided outside the second guard wall 220 and extending along the platform 160, and a platform guard 160 provided inside the third guard wall 230. A third guard wall side guide rail 420 extending along the guide rails 410 and 420 and a second slide member 430 moving along the guide rails 410 and 420 are configured.

  The second protective wall side guide rail 410 and the third protective wall side guide rail 420 are also offset in the height direction of the panel (door body), as shown in FIGS. Further, as shown in FIG. 3, the second slide member 430 has a substantially rhomboid side surface. As shown in FIG. 4, two rollers 431 provided inside the second slide member 430 are provided with the second protective wall 220. The two guide rollers 410 are movably held, and two rollers 432 provided outside the second slide member 430 are movably held by the guide rails 420 of the third protective wall 230. Further, although not described in detail, the stoppers S (see FIG. 6) for preventing the rollers 431 or 432 from coming off are provided at both ends of the guide rail 410 and the guide rail 420, respectively.

  Thus, the third protective wall 230 is slidably held outside the second protective wall 220 via the two guide mechanisms 400 juxtaposed in the height direction. In this case as well, the slide member 430 is held by the rollers 431 and 432 with respect to the guide rails 410 and 420, but these rollers 431 and 432 are simply replaced with friction elements that slide on the guide rails 410 and 420. May be. The guide mechanism 400 may be provided with guide rails on both sides of the slide member 430, and the guide rails 410 and 420 may be replaced with rollers or friction elements.

  By the way, the second protective wall 220 and the third protective wall 230 may be individually slid independently by manual operation or the like, but in this embodiment, the second protective wall 220 and the third protective wall 230 are drawn out and A rope moving mechanism 500 that synchronizes storage is provided.

  FIGS. 5A and 5B are plan views showing the storage state and the drawing state of the platform protection wall 200 arranged on the left side from the direction D1 in FIG.

  The rope moving mechanism 500 of this embodiment uses a chain. As shown in FIG. 5A, the first chain wheel 510, the second chain wheel 520, and the like are respectively disposed at the front and rear ends of the second protective wall 220. Is rotatably provided. The chain 530 is composed of two chains 531 and 532. One end of the chain 531 is fixed to the front of the first protective wall 210 via the fixing bracket 540, and the other end is extended over the first chain wheel 510. While fixing through the fixing bracket 550 at the rear of the three protective walls 230, one end of the chain 532 is fixed at the front of the first protective wall 210 through the fixing bracket 540 and is passed over the second chain wheel 520. The other end is fixed behind the third protective wall 230 via the fixing bracket 550.

  According to such a configuration, when the third protective wall 230 is moved in the forward direction of the vehicle, the second protective wall 220 is only ½ of the amount of movement of the protective wall 230 in synchronization with the third protective wall 230. When the third protective wall 230 is moved in the rearward direction of the vehicle while moving and pulled out from the first protective wall 210, the second protective wall 220 moves in synchronization with the third protective wall 230. It moves by half of the amount to be stored and is stored outside the first protective wall 210. That is, according to the rope moving mechanism 500, the second protective wall 220 and the third protective wall 230 can be stored and pulled out from the first protective wall 210 in synchronization. In addition, since the first protective wall 210 and the second protective wall 220 are synchronized, only one of the first protective wall 210 and the second protective wall 220 is fixed to the platform 160 by inserting a pin member or the like. Both the protective walls 220 and 230 can be fixed to the platform 160. The first chain 531 and the second chain 532 may be ring-shaped endless chains, and the cable moving mechanism may use a wire other than the chain.

  By the way, since the shape of the aircraft body 10 is a curve as shown in FIG. 1, if the third protective wall 230 is first, a slight gap may be formed between the aircraft body 10 and the mounting opening 10a. is there. Although such a gap does not cause trouble for the purpose of protecting the worker, it is also considered to give anxiety to the worker. Therefore, it is preferable to keep such a gap as small as possible.

  Therefore, in the present embodiment, as shown in FIG. 3, the third protective wall 230 is connected to the third protective wall 230 that is the farthest from the first protective wall 210 out of the two protective walls 220 and 230. Three mini-protective walls 1 are juxtaposed in the height direction.

  FIGS. 6A and 6B are a side view of the third protective wall 230 arranged on the left side as seen from the platform 160 and a front view as seen from the front to the rear of the vehicle. FIGS. 7A and 7B are enlarged views of main parts showing regions C and D in FIG. 6B, respectively.

  Referring to FIGS. 6 and 7, three mini protection walls 1 are juxtaposed outside the third protection wall 230 in the height direction of the third protection wall 230. Each of these mini protective walls 1 slides in the longitudinal direction of the vehicle with respect to the third protective wall 230 along two guide mechanisms 600 juxtaposed outside the third protective wall 230. As shown in FIG. 7, the guide mechanism 600 is provided on the outer side of the third protective wall 230 and extends along the platform 160, and on the platform 160, provided on the inner side of the mini protective wall 1. An intermediate guide rail 630 facing these guide rails 610 and 620 is provided between the mini-protection wall side guide rail 620 and the third protection wall-side guide rail 610 and the intermediate guide rail 630. A slide member 640 is disposed along the rails 610 to 630 between the wall side guide rail 620 and the intermediate guide rail 630, respectively. The slide member 640 has a ball member 641 held on the rails 610 to 630 so as to be able to roll. According to such a configuration, a two-fold telescopic guide rail with the two slide members 640 interposed is formed between the third protective wall 230 and the mini protective wall 1.

  Thereby, the mini protective wall 1 is slidably held outside the third protective wall 230 via the two guide mechanisms 600 juxtaposed in the height direction. In this embodiment, the slide member 640 is interposed between the three guide rails 610 to 630 to secure a long stroke amount for pulling out the mini protective wall 1 from the third protective wall 230. If one is unnecessary, one slide member 640 may be directly interposed between the third protective wall side guide rail 610 and the mini protective wall side guide rail 620. Furthermore, although the slide member 640 has a ball member 641, a friction member that slides on rollers or rails 610 and 620 may be used instead of the ball member 641. The guide mechanism 600 may be provided with guide rails on both sides of the slide member 640, and the guide rails 610, 620, and 630 may be replaced with ball members, rollers, or friction elements. In this embodiment, as shown in FIG. 6, a stopper that restricts the movement of the mini protection wall side guide rail 620, the intermediate guide rail 630, and the slide member 649 on the outer surface of the third protection wall 230. 230s are provided.

  In this embodiment, as shown in FIG. 3, an auxiliary panel 2 is provided on the outer surface of the mini protective wall 1 so as to be swingable with respect to the mini protective wall 1 via a pin member Po. It has been. FIG. 8 is a plan view of the main part of FIG. 3 as viewed from the direction D4. As shown in FIG. 8, a buffer member 2a made of a synthetic resin is provided at the tip of the auxiliary panel 2 to soften the buffer with the airframe 10. Is provided.

  If the pin member Po is disposed in the vicinity of the center of the mini protection wall 1 with respect to the height direction, it can be swung evenly in the vertical direction. In the case of this embodiment, as shown in FIG. Is disposed below the auxiliary panel 2 (mini protective wall 1). According to such a configuration, the auxiliary panel 2 swings downward with respect to the mini protection wall 1 by its own weight without being operated by the operator.

  Here, as shown in FIG. 3, the auxiliary panel 2 is provided with a rod-shaped member (contact member) 3 extending toward the third protective wall 230. Further, on the outer surface of the third protective wall 230, as shown in FIG. 6 (a) or FIG. 7 (b), a contact portion 4 that protrudes outward and contacts the rear end 3e of the rod-shaped member 3 is provided. ing. According to such a configuration, the rear end 3 e of the rod-shaped member 3 abuts on the abutting portion 4 protruding from the outer surface of the third protective wall 230 when the mini protective wall 1 is stored outside the third protective wall 230. When the mini protective wall 1 is further pushed toward the third protective wall 230, the force to swing upward with respect to the auxiliary panel 2 against its own weight with respect to the auxiliary panel 2 based on the swinging portion P1. And the auxiliary panel 2 can be accommodated outside the mini protective wall 1. When the mini protective wall 1 is pulled out from the third protective wall 230, the rear end 3e of the rod-like member 3 is separated from the abutting portion 4. A force that swings downward with respect to the auxiliary panel 2 is generated, and the auxiliary panel 2 can be pulled out of the mini protective wall 1.

  Further, in this embodiment, as shown in FIG. 3, each of the mini protection walls 1 is provided with a notch portion 1 c in which a corner portion located in the swing direction of the auxiliary panel 2 is notched. In the present embodiment, the auxiliary panel 2 swings downward due to its own weight, and thus the notch 1c is provided at the lower end of the auxiliary panel 2, but the auxiliary panel 2 is aligned with the swinging direction of the auxiliary panel 2. 2 can be provided at both the upper and lower ends.

  In this embodiment, as shown in FIGS. 3 and 6, a lock that restricts the mini-protective wall 1 from protruding from the third protective wall 230 between the third protective wall 230 and the mini-protective wall 1. A mechanism 700 is provided. The lock mechanism 700 is provided between each mini-protection wall 1 and the third protection wall 230. In FIGS. 3 and 6, the mini-protection wall 1 and the third protection wall arranged at the uppermost part are used. It is illustrated only between 230.

  9A and 9B are operation diagrams illustrating the lock mechanism 700, respectively. As shown in FIG. 6, the lock mechanism 700 includes a snatch lock (lock body) 710 provided on the outer surface of the third protective wall 230 and a snatch lock 710 protruding from the inner surface of the mini protective wall 1 as shown in FIG. And a striker (engagement protrusion) 720 that is detachably fitted to the head. The snatch lock 710 has a claw portion 710n that maintains a closed state or an open state until a certain force is applied by an urging force such as a spring, and when the mini protective wall 1 is stored on the outer surface of the third protective wall 230, As shown in FIG. 9A, the claw portion 710n holds the striker 720 of the mini protective wall 1 to fix the mini protective wall 1 to the third protective wall 230, and the mini protective wall 1 is fitted with the snatch lock 710. When the vehicle is pulled forward by a force larger than the resultant force, the claw portion 710n opens the striker 720 of the mini protective wall 1 and pulls out the mini protective wall 1 from the third protective wall 230 as shown in FIG. 9B. it can.

  Reference numerals 210w, 220w, 230w, and 1w are inspection windows provided on the first protective wall 210, the second protective wall 220, the third protective wall 230, and the mini protective wall 1, and are made of glass material or acrylic material, respectively. It is made of a transparent material. According to such a configuration, when the second protective wall 220, the second protective wall 230, and the mini protective wall 1 are accommodated outside the first protective wall 210, the respective inspection windows are overlapped. Even when the door body 210 is closed, the platform 160 and the aircraft body 10 outside the container 140 can be inspected.

  The roof in front of the container 140 has a canopy 144 for preventing rain that is stored in the roof during traveling and taken out when necessary. The canopy 144 is undulated and stretched by a hydraulic cylinder (not shown). For this reason, in the third protective wall 230 according to the present embodiment, as shown in FIG. 6A, a notch portion 230c is formed at the corner at the rear of the upper portion, and a hydraulic cylinder (not shown) for raising and lowering the canopy 144 To prevent interference.

  As described above, in this embodiment, the second and third protective walls 220 and 230 are provided on the outer surfaces of the door bodies 210 arranged on the left and right, respectively, and the farthest from the door body 210 among these protective walls 220 and 230. Since the three mini protective walls 1 are juxtaposed with the protective wall 230 drawn out in the height direction of the protective wall 230, when opening the work port 140a of the container 140, it is arranged on the left and right as shown by the phantom line in FIG. After opening each door body 210 and simultaneously pulling out the protection walls 220 and 230 from the outer surface of each door body 210, each mini protection wall 1 juxtaposed to the protection wall 230 by manual operation is mounted on the mounting port 10a as shown in FIG. By pulling them individually, the protective wall 200 can be formed on the platform 160 spanned between the work port 140a of the container 140 and the mounting port 10a to prevent cross wind and fall. According to such a configuration, even when the platform 160 is longer than the protective walls 220 and 230 drawn out from the door body 210, it is possible to prevent a cross wind or a fall received on the platform 160.

  Moreover, in this case, by pulling out each mini protective wall 1 independently from the protective wall 230, the gap formed between the protective wall 200 in the vicinity of the mounting port 10a can be kept small, so that the operator feels uneasy. Comfortable work can be realized without giving

  Furthermore, in this case, when closing the work opening 140a of the container 140, the mini protection wall 1 is stored on the outer surface of each door 210 arranged on the left and right, so when closing the two doors 210 arranged on the left and right However, the work opening 140a of the container 140 can be closed without interference between the mini-protective walls 1 and further downsizing can be achieved.

  Further, in this embodiment, since the auxiliary panel 2 is provided on the side surface of the mini protective wall 1 so as to be swingable with respect to the mini protective wall 1 via the pin member P1, the vicinity of the mounting opening 10a is provided. Since the gap formed between the protective wall 200 and the protective wall 200 can be further reduced, a more comfortable work can be realized. In particular, in the case of this embodiment, as shown in FIG. 3, the swinging portion Po of the auxiliary panel 2 is arranged on the lower side of the auxiliary panel 2 to enable swinging by its own weight, and the rod-like member 3 is attached to the auxiliary panel 2. If the rod-like member 3 can be brought into contact with the contact portion 4 provided on the third protective wall 230, the drawer and storage of the auxiliary panel 2 are synchronized with the drawer and storage from the auxiliary panel 2 to the mini protective wall 1. Therefore, the work required for pulling out and storing the auxiliary panel 2 can be omitted, and the work efficiency can be improved. Furthermore, in the case of the present embodiment, the mini protection wall 1 is provided with a notch 2c in which a corner located in the swinging direction of the auxiliary panel 2 is cut out, so that the auxiliary panel 2 swings with respect to the mini protection wall 1. Since a wide range can be secured and a gap formed between the protective wall 200 in the vicinity of the mounting opening 10a can be minimized, a more comfortable work can be realized.

  In this embodiment, since the lock mechanism 700 for restricting the mini-protection wall 1 from protruding from the third protective wall 230 is provided between the third protective wall 230 and the mini-protective wall 1, the vehicle is used as a vehicle. It is possible to prevent the mini protective wall 1 from jumping out of the third protective wall 230 and interfering with other protective walls in the vicinity during the movement.

  In the present invention, the mini protection wall 1 may be provided directly on the door body 210 without providing the protection walls 220 and 230 between the mini protection wall 1 and the door body 210. In particular, when at least one protective wall 220, 230 is provided on the side surface of each door 210 arranged on the left and right, and at least two mini protective walls 1 are juxtaposed in the height direction of the protective wall 230, in particular. Even when the platform 160 is longer than the protective walls 220 and 230 drawn out from the door body 210, it is possible to prevent the cross wind and the fall received on the platform 160.

  Furthermore, in this embodiment, if a drive source such as an engine and the cab 110 are provided integrally or separately from the chassis 2 to which the container 140 is attached, the mobility as an aerial work vehicle is improved. Workability can be improved.

  The above description shows only one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, it is sufficient that at least two mini protection walls 1 are juxtaposed in the height direction of the protection wall, and the invention is not limited to three mini protection walls. Further, the number of protective walls 220 and 230 interposed between the mini protective wall 1 and the door body 210 may be three or more. Further, the platform 160 is not limited to the one that extends and contracts in the vehicle front-rear direction, but may be one that slides in the left-right direction of the vehicle. In addition, the elements, members, mechanisms, and the like employed in this embodiment can be variously replaced or combined depending on the application.

FIG. 2 is a side view showing a lift truck having a box-type cargo bed that is used in an airport or the like and that mounts in-flight meal or the like on the aircraft body from the loading port of the aircraft. It is a principal part enlarged view which shows FIG. 1 from D1 direction. It is the side view which showed one (left side) of the platform protection walls which concern on the same form from the inside of a platform. (A), (b) is a front view which respectively shows the 1st-3rd protection wall from the direction of arrow D2, D3 in FIG. (A), (b) is a top view which respectively shows the accommodation state and drawer | drawing-out state of the platform protection wall which concern on the form from the D1 direction of FIG. (A), (b) is the side view which looked at the 3rd protection wall which concerns on the form from the platform, respectively, and the front view which looked toward the back from the vehicle front. (A), (b) is the principal part enlarged view which shows the area | regions C and D of FIG.6 (b), respectively. It is a principal part top view which shows FIG. 3 from D4 direction. (A), (b) is an operation | movement figure which illustrates the locking mechanism which concerns on this form, respectively.

Explanation of symbols

1 Mini protective wall 2 Auxiliary panel 3 Bar-shaped member 4 Contact part
100 lift truck
140 containers
160 platform
200 platform barrier
210 First protective wall (door)
220 Second protective wall (panel)
230 Third protective wall (panel)
300, 400 guidance mechanism
500 rope mechanism
600 Guide mechanism
700 Locking mechanism Po Pin member (swinging part)

Claims (11)

A high place comprising a container having two door bodies arranged on the left and right sides, a platform spanned from an opening of the container formed by opening the door body toward a target position, and a carriage that holds the container up and down freely In work vehicles,
It is juxtaposed to the side surface of the door body in the height direction of the door body, and is overlapped and stored when the opening of the container is closed, and is pulled out from the door body toward the target position when the opening of the container is opened, An aerial work vehicle characterized in that at least two mini panels forming a protective wall are provided.   The aerial work vehicle according to claim 1, wherein an auxiliary panel that is swingably held with respect to the mini panel is provided on a side surface of the mini panel.   The auxiliary panel has a swinging portion of the auxiliary panel below the auxiliary panel to enable swinging by its own weight, and when the mini panel is stored in the door body, the auxiliary panel is in contact with the door body. When the auxiliary panel is swung against its own weight to store the auxiliary panel in the mini-panel and the mini-panel is pulled out from the door body, the abutment is separated from the door body to swing the auxiliary panel by its own weight. The aerial work vehicle according to claim 2, wherein a member is provided.   4. The aerial work vehicle according to claim 2, wherein the mini panel includes a cutout portion formed by cutting out a corner portion located in a swinging direction of the auxiliary panel. 5.   5. The high place according to claim 1, wherein a lock mechanism is provided between the door body and the mini panel to restrict the mini panel from protruding from the door body. Work vehicle. Work at height, comprising a container having two doors that open to the left and right, a platform spanned from an opening of the container formed by opening the doors toward a target position, and a cart that holds the container up and down. In the car,
The door body includes at least one panel which is stored in an overlapping manner when the opening of the container is closed and is pulled out from the door body toward a target position when the opening of the container is opened to form a protective wall on the platform. ,
Among the panels, the panel that is pulled out the farthest from the door body is juxtaposed in the height direction of the panel, and when the opening of the container is closed, it is stored in an overlapping manner, and when the opening of the container is opened, the panel is moved to the target position. An aerial work vehicle characterized in that at least two mini panels that are drawn out toward the platform to form a protective wall are provided on the platform.   The aerial work vehicle according to claim 6, wherein an auxiliary panel is provided on a side surface of the mini panel so as to be swingable with respect to the mini panel.   The auxiliary panel has a swinging portion of the auxiliary panel below the auxiliary panel so that the auxiliary panel can swing due to its own weight. When the mini panel is stored in the panel, the auxiliary panel is brought into contact with the panel to support the auxiliary panel. When the panel is swung against its own weight, the auxiliary panel is housed in the mini panel, and when the mini panel is pulled out from the panel, an abutting member is provided to move away from the panel and swing the auxiliary panel by its own weight. The aerial work vehicle according to claim 7.   9. The aerial work vehicle according to claim 7, wherein the mini panel includes a cutout portion formed by cutting out a corner portion located in a swinging direction of the auxiliary panel.   The aerial work vehicle according to any one of claims 6 to 9, wherein a lock mechanism is provided between the panel and the mini-panel to restrict the mini-panel from protruding from the panel. .   The aerial work vehicle according to any one of claims 1 to 10, wherein the carriage includes a drive source such as an engine and a cab.

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