JP2009012866A - Elevating/lowering system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevating/lowering system capable of elevating/lowering an object to be conveyed from a lower floor surface to an upper floor surface easily corresponding to various kinds of elevating/lowering heights. <P>SOLUTION: The elevating/lowering system 1 comprises at least one first guide 21 extending from a lower floor surface G along the elevating/lowering direction X, at least one second guide 23 extending substantially parallel to the first guide 21, a moving means 8 for upwardly moving the second guide 23 along the first guide 21, a loading stand 2 with an object M to be conveyed being loaded thereon, first supporting parts 31, 32 for movably supporting the loading stand 2 by the first guide 21, and a propulsion means 42 for giving the propulsive force to the loading stand 2 in the elevating/lowering direction X. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lifting device that transports a target transport target from a lower floor surface to an upper floor surface.

  2. Description of the Related Art Conventionally, in passenger airplanes and the like, ascending / descending steps are used as means for getting passengers in and out of the entrances located above the ground. The conventional elevating step has a staircase that connects the lower floor surface, which is the ground, and the upper floor surface, which is the entrance, and passengers go up and down the staircase to get on and off passenger aircraft and the like. However, in such an elevating step, a passenger who is difficult to elevate by himself / herself needs to elevate by being carried by a plurality of people.

  For this reason, the staircase portion can be rotated around the upper end by the driving means, and the parallel links are provided so that each of the step board constituting the staircase portion and the mounting plate provided at the lower end of the staircase portion is always horizontal. A configured lifting device has been proposed (see, for example, Patent Document 1). According to this lifting device, if the driving means is driven on the mounting plate and the staircase is rotated upward, the passenger is transported upward together with the mounting plate. Is done. At this time, since the mounting board and the tread board are always horizontal, it is said that the passenger can move the stairs to the upper floor surface in a horizontal state by rotating the entire stairs until it is horizontal. .

In addition, a lifting device including a guide disposed along a staircase, a mounting table that supports passengers, and propulsion means that moves the mounting table along the guide has been proposed (see, for example, Patent Document 2). ). According to this lifting device, it is said that the passenger on the mounting table can be lifted by moving the mounting table along the guides arranged in the staircase by the propulsion means.
Japanese Patent Laid-Open No. 9-194198 Japanese Patent Publication No.61-29741

  However, the lifting device of Patent Document 1 can only deal with the lifting height determined by the staircase. Similarly, since the lifting device of Patent Document 2 is moved by a guide disposed along the staircase, it can only cope with the lifting height determined by the guide. For this reason, for example, in order to use it for getting on and off passenger aircraft as described above, it is necessary to prepare lifting devices of various lifting heights corresponding to passenger aircraft of various sizes from large aircraft to small aircraft. . Alternatively, it has been necessary to increase the height of the guide so as to add a guide when the height is increased and the height is increased.

  The present invention has been made in view of the above-described circumstances, and provides an elevating device capable of elevating a conveyed object from a lower floor surface to an upper floor surface easily corresponding to various elevating heights. To do.

In order to solve the above problems, the present invention proposes the following means.
The present invention relates to an elevating apparatus for elevating a conveyed object from a lower floor surface to an upper floor surface, at least one first guide extending from the lower floor surface along the elevating direction, and the first guide At least one second guide extending substantially parallel to the first guide, a moving means capable of moving the second guide upward along the first guide, and the transported body mounted thereon. A mounting table to be placed, a first support portion capable of supporting the mounting table in a movable manner by the first guide, and supporting the mounting table in a movable manner by the second guide. The present invention is characterized in that a possible second support portion and propulsion means for providing a propulsive force in the ascending / descending direction to the mounting table are provided.

  According to the lifting device of the present invention, the mounting table moves in the lifting direction along the first guide while being supported by the first support portion by applying a driving force to the mounting table by the propelling means. It is possible. For this reason, the to-be-conveyed body mounted in the mounting base can be freely raised / lowered to the raising / lowering height determined by extension of a 1st guide with a mounting base. Further, the second guide is moved along the first guide by the moving means, and the second guide is disposed so as to protrude above the first guide. If a propulsive force is applied to the mounting table by the propelling means in this state, the mounting table moves along the first guide while being supported by the first support portion in a range where the first guide is extended. In the range where the second guide is extended, the second guide can be moved along the second guide while being supported by the second support portion. Moreover, in the range which a 1st guide and a 2nd guide overlap, it can move in the state supported by each of a 1st support part and a 2nd support part. For this reason, by moving the second guide forward and backward with respect to the first guide by the moving means, it is possible to freely change the height that can be raised and lowered to raise and lower the mounting table.

More preferably, the lifting device includes a plurality of sets of the first guide and the first support part, and the second guide and the second support part.
According to the lifting device according to the present invention, the mounting table is supported by the plurality of sets of the first guide and the first support portion, the second guide and the second support portion, and is movable in the lifting direction. By being, it is possible to raise and lower the mounting table from the lower floor surface to the upper floor surface in a more stable state.

More preferably, the lifting device includes a plurality of the first support portions and the second support portions respectively corresponding to the first guide and the second guide.
According to the lifting device of the present invention, the mounting table is supported by the plurality of first support portions with respect to the first guide, and is supported by the plurality of second support portions with respect to the second guide. Thus, the mounting table can be raised and lowered from the lower floor surface to the upper floor surface in a more stable state.

Moreover, as for said raising / lowering apparatus, it is more preferable that said 1st support part and said 2nd support part are rollers which can roll said 1st guide or said 2nd guide corresponding.
According to the lifting device of the present invention, the first support portion and the second support portion are rollers, so that the corresponding first guide or second guide is rolled in a state where the mounting table is supported. Thus, the mounting table can be moved.

  The lifting device includes a first staircase portion extending from the lower floor surface along the lifting direction, and a second staircase portion extending substantially parallel to the first staircase portion. More preferably, the moving means is capable of moving the second staircase portion together with the second guide upward along the first guide.

  According to the elevating device according to the present invention, it is possible to raise and lower the mounting table to convey the object to be conveyed, and to move up and down by self-walking with the first step portion and the second step portion. Here, since the second step portion can be moved along the first guide together with the second guide by the moving means, the elevation height can be freely adjusted.

  According to the lifting device of the present invention, the mounting table is movably supported by the first support portion on the first guide and by the second support portion on the second guide, and by the moving means. Since the first rail is movable along the first rail, it is possible to easily raise and lower the conveyed object from the lower floor surface to the upper floor surface corresponding to various elevation heights.

  1 to 4 show an embodiment according to the present invention. FIG.1 and FIG.3 has shown the whole figure of the passenger step wheel as an example to a raising / lowering apparatus. Moreover, FIG. 2 has shown the detailed drawing of the mounting base part in FIG. FIG. 4 is a cross-sectional view taken along line AA in FIGS. 1 and 3. As shown in FIGS. 1 and 3, the passenger step wheel 1 of the present embodiment raises and lowers a passenger M from the ground G, which is the lower floor surface, to the floor surface P <b> 1 of the passenger plane entrance / exit P, which is the upper floor surface. Thus, the passenger M can move up and down by walking by himself / herself, and can be moved up and down by mechanical drive in a state where the passenger M is on the wheelchair M1 and is placed on the mounting table 2. Details are shown below.

  As shown in FIGS. 1 to 4, the passenger step wheel 1 of the present embodiment includes a chassis 4 that can be driven by wheels 3 and a first staircase portion that is arranged in a predetermined ascending / descending direction X on the chassis 4. 10 and the second staircase portion 11. The first staircase portion 10 constitutes a main body having a central portion formed in a step shape, and both end portions constitute a frame 10a. A first side frame 12 is erected on each frame 10 a constituting both ends, and supports a first hood 13 that covers the top of the first staircase portion 10. Similarly, the second staircase portion 11 constitutes a main body having a central portion formed in a step shape, and both end portions constitute a frame 11a. A second side frame 14 is erected on each of the frames 11 a to support a second hood 15 that covers the upper side of the second stepped portion 11. Note that the second side frame 14 and the second hood 15 are disposed outside the first side frame 12 and the second hood 13, respectively.

  Further, the passenger step wheel 1 includes a hydraulic jack 5 extending upward from the chassis 4 and a rear end supported by the rear end of the chassis 4 and a front end supported by the front end of the hydraulic jack 5 in the lifting direction X. A first lower frame 6 disposed; and a second lower frame 7 housed inside the first lower frame 6 and capable of advancing upward in the ascending / descending direction X using the first lower frame 6 as a guide. . The second step portion 11 is held in a state in which the frame 11 a is supported by the second lower frame 7 via the second side frame 14 and extends in the ascending / descending direction X. The first staircase portion 10 has a front end of the frame 10 a supported by the frame 11 a of the second staircase portion 11 via a guide roller 10 b and a rear end of the frame 10 a at the rear end of the chassis 4. It is supported and held in a state extending in the up-and-down direction X.

  Here, a hydraulic cylinder 8 as a moving means is provided inside the rear end of the first lower frame 6, and the second lower frame 7 is advanced and retracted with respect to the first lower frame 6 by the hydraulic cylinder 8. It is possible. And by making the 2nd lower frame 7 advance with respect to the 1st lower frame 6, the 2nd step part 11 integrated with the 2nd lower frame 7, the 2nd side frame 14, and The second hood 15 can be advanced upward in the ascending / descending direction X with respect to the first step portion 10, the first side frame 12, and the first hood 13 fixed integrally with the chassis 4. It has become.

  A horizontal floor 16 for entering and exiting the entrance P and a support column 17 standing in the vertical direction are fixed to the front end of the second staircase 11. The upper part of the horizontal floor 16 is surrounded by an upper hood 18. Further, an auxiliary frame 20 is disposed substantially in parallel above the second lower frame 7 and the second step portion 11. The front end of the auxiliary frame 20 is fixed to the support column 17. A plurality of guide rollers 10c are provided on the frame 10a of the first staircase portion 10 with a predetermined interval. The lower edge 20a of the auxiliary frame 20 is supported by the guide roller 10c. Further, guide rollers 12 a are provided at predetermined intervals at positions facing the lower edge 20 a of the auxiliary frame 20 in the first side frame 12, and the guide rollers 12 a abut against the side surfaces of the auxiliary frame 20. ing. Further, a guide roller 20c is provided at the upper edge 20b of the auxiliary frame 20 with a predetermined interval. And the guide roller 20c of the auxiliary | assistant frame 20 is fitted by the auxiliary | assistant guide 12b of the cross-sectional substantially conical shape extended in the 1st side frame 12 so that it might be substantially parallel to the 1st step part 10, and an auxiliary guide It can roll along 12b. For this reason, the auxiliary | assistant frame 20 can drive | work to the raising / lowering direction X, being guided by the guide rollers 10c and 12a and the auxiliary guide 12b.

  Further, above the first staircase portion 10, as a first guide, a first upper guide 21 and a first lower guide 22 are substantially parallel to the first staircase portion 10, that is, in the ascending / descending direction. X is extended. The first upper guide 21 and the first lower guide 22 are both formed in a square cross section, and the first upper guide 21 is disposed so that the diagonal direction is vertical, The lower guide 22 is arranged so that the side direction is vertical. The first upper guide 21 is supported by a support member 21 a that protrudes from the first side frame 12 at a predetermined interval at a position above the auxiliary frame 20. The first lower guide 22 is supported by a support member 22 a that protrudes from the first side frame 12 at a predetermined interval at a position below the auxiliary frame 20.

  Above the second staircase portion 11, as a second guide, a second upper guide 23 and a second lower guide 24 are substantially parallel to the second staircase portion 11, that is, in the ascending / descending direction. X is extended. The second upper guide 23 and the second lower guide 24 are both formed in a square cross section, and the second upper guide 23 is disposed so that the diagonal direction is vertical, The second lower guide 24 is disposed so that the side direction is vertical. The second upper guide 23 is supported by a support member 23a that protrudes from the upper edge 20b of the auxiliary frame 20 at a predetermined interval. The second lower guide 24 is supported by a support member 24a that protrudes from the lower edge 20a of the auxiliary frame 20 at a predetermined interval. Thus, the first upper guide 21, the second upper guide 23, the second lower guide 24, and the first lower guide 22 are arranged in the vertical direction sequentially from the upper side to the lower side, and These are extended along the ascending / descending direction X so as to be substantially parallel to each other.

  The mounting table 2 includes a mounting plate 25 on which a passenger M and the like to be moved up and down are mounted, and a side plate 26 disposed upward from an edge of the mounting plate 25. In FIG. 2, guide plates 25a and 25b that are rotatable are respectively provided at the front end and the rear end of the mounting plate 25. By placing the mounting plate 25 in a substantially horizontal state, the mounting plate 25 is mounted from the ground G as described later. It becomes a guide from the mounting plate 25 to the horizontal floor 16 up to the mounting plate 25, and also serves as a means for preventing the passenger M from falling on the mounting plate 25 by standing.

  As shown in FIGS. 2 and 4, on the outer surface of the side plate 26 opposite to the side on which the mounting plate 25 is attached, a first upper roller 31, a second upper roller 32, and a third upper roller are provided. 33, a first lower roller 34, and a second lower roller 35 are provided. In the present embodiment, two each of the first upper roller 31, the second upper roller 32, the third upper roller 33, the first lower roller 34, and the second lower roller 35 are provided. ing.

  Here, the first upper roller 31, the second upper roller 32, and the third upper roller 33 are arranged in a direction substantially orthogonal to the ascending / descending direction X, and both the first step portion 10 and It is attached to the side plate 26 of the mounting table 2 so as to be rotatable within a plane substantially orthogonal to the second step portion 11. The first upper roller 31, the second upper roller 32, and the third upper roller 33 are all V-shaped that are compatible with the first upper guide 21 and the second upper guide 23 in the circumferential direction. Grooves are formed. The first upper roller 31 and the second upper roller 32 constitute a first support portion that can be fitted to the first upper guide 21 and that the second upper roller 32 and the third upper roller 32 can be fitted together. A second support portion is formed by the upper roller 33 and can be fitted to the second upper guide 23.

  The first lower roller 34 and the second lower roller 35 are both attached to the side plate 26 of the mounting table 2 so as to be rotatable in a plane substantially parallel to the first step portion 10 and the second step portion 11. ing. Then, the first lower roller 34 constitutes another first support portion, which can contact the first lower guide 22, and the second lower roller 35 allows the other second support portion to be brought into contact with the first lower guide 22. It can comprise and can contact | abut to the 2nd lower guide 24. FIG.

  Then, the mounting table 2 has a first upper roller 31 and a second upper roller 32 that constitute the first support part, and a second first support part that constitutes the other first support part, depending on the use situation, as will be described later. A combination with one lower roller 34, or a second upper roller 32 and a third upper roller 33 constituting the second support portion, and a second lower roller 35 constituting the other second support portion. Is supported above the first staircase portion 10 and the second staircase portion 11 by at least one of the combinations.

  A rotating frame 40 is provided above the horizontal floor 16 and is rotatably supported by the support pillar 17. The rotating frame 40 is provided with a third upper guide 41. From the state where the third upper guide 41 is disposed so as to extend upward in the lifting direction X from the upper end of the second upper guide 23 as the rotating frame 40 rotates around the support pillar 17, It is possible to rotate approximately 90 degrees to a state substantially orthogonal to the width direction of the staircase portion 11 in plan view. An electric winch 42 is attached to the rotating frame 40 as a propulsion means. The pulling wire 43 extending from the electric winch 42 is disposed between the second upper guide 23 and the second lower guide 24, and the tip is fixed to the side plate 26 of the mounting table 2.

  Here, as shown in FIG. 4, in the side plate 26 of the mounting table 2, a fall prevention mechanism 45 is provided above the position where the tip of the pulling wire 43 is fixed in the ascending / descending direction X. The fall prevention mechanism 45 includes a locking member 45a that is rotatably supported in a plane substantially orthogonal to the first staircase portion 10 and the second staircase portion 11, and a spring provided on the rotation shaft of the locking member 45a. Member 45b. The locking member 45a is biased around the rotation axis by the spring member 45b and is held at a position where it can engage with the support member 22a of the first lower guide 22 and the support member 24a of the second lower guide 24. Has been. On the other hand, the pulling wire 43 is attached to the upper end of the locking member 45a. By pulling the pulling wire 43, the locking member 45a can rotate to a position where it does not engage with the support members 24a and 25a. It is possible.

  Next, the operation of the passenger step wheel 1 of this embodiment will be described. First, the case where the height from the ground G to the entrance P is low, such as a small passenger aircraft, will be described with reference to FIGS. As shown in FIG. 1, the second lower frame 7 is accommodated in the first lower frame 6. Thereby, the second staircase portion 11 is accommodated below the first staircase portion 10, and the second upper guide 23, the second lower guide 24, and the auxiliary frame 20 are The guide 21 and the first lower guide 22 are overlapped in the vertical direction, and the horizontal floor 16 is positioned at the upper end of the first step portion 10. For this reason, the passenger M can go up and down the elevation height determined by the first staircase portion 10 by walking on the first staircase portion 10 and can get on and off the entrance P from the horizontal floor 16.

  Moreover, in the case of the passenger M who got on the wheelchair M1, as shown in FIG. 1, first, the passenger M is boarded on the mounting base 2 arranged on the ground G, and the guide plate 25a is rotated to be in an upright state. Here, as shown in FIG. 2, the mounting table 2 includes a first upper guide 21 and a second upper roller 33 by a first upper roller 31, a second upper roller 32, and a third upper roller 33. It is supported on the guide 23 and supported by the first lower guide 22 and the second lower guide 24 by the first lower roller 34 and the second lower roller 35.

  Then, as shown in FIG. 1, the electric winch 42 is driven to wind up the pulling wire 43 connected to the side plate 26 of the mounting table 2. As a result, the mounting table 2 is given a propulsive force, and the first upper roller 31, the second upper roller 32, and the third upper roller 33 move the first upper guide 21 and the second upper guide 23, respectively. By rolling, the first lower roller 34 and the second lower roller 35 are moved up in the ascending / descending direction X by rolling the first lower guide 22 and the second lower guide 24. It will be. Then, in a state where the mounting plate 25 of the mounting table 2 has a height substantially equal to the horizontal floor 16, the guide plate 25b attached to the rear end of the mounting plate 25 is rotated until it is in a substantially horizontal state, It spans between the mounting plate 25 and the horizontal floor 16. Thereby, the passenger M who boarded the wheelchair M1 can move to the entrance P via the horizontal floor 16 by moving on the guide plate 25b. The mounting table 2 is further raised so that the second upper roller 32 and the third upper roller 33 are transferred from the second upper guide 23 to the third upper guide 41, that is, the mounting table 2. Is positioned above the horizontal floor 16, the mounting frame 2 can be put on standby at the storage position on the horizontal plate 16 by rotating the rotating frame 40.

  In addition, even if the pulling wire 43 is broken during the movement of the mounting table 2, the mounting table 2 on which the passenger M is mounted is lowered to the lowest end by the fall prevention mechanism 45 acting. Can be prevented. That is, as shown in FIG. 4, when the mounting table 2 is moved by pulling the pulling wire 43, the locking member 45 a rotates and does not come into contact with the support members 22 a and 24 a. It does not hinder the movement of the cradle 2. On the other hand, when the pulling wire 43 is loosened due to breakage or the like, the locking member 45a is instantaneously rotated by the urging force of the spring member 45b, and is locked to the nearest support members 22a and 24a. Thus, the mounting table 2 is stopped.

  Next, a case where the height from the ground G to the entrance / exit P, such as a medium-sized passenger aircraft or a large passenger aircraft, is higher than the height that can be raised and lowered by the first staircase portion 10 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, in this case, the hydraulic cylinder 8 is driven from the state shown in FIG. 1, and the second lower frame 7 is advanced upward in the ascending / descending direction X with respect to the first lower frame 6. At this time, the second step portion 11, the second side frame 14, the second hood 15, the horizontal floor 16, the support pillar 17, and the second upper guide 23 that are integrated with the second lower frame 7. The second lower guide 24 and the auxiliary frame 20 also follow and move upward in the lifting direction X.

  Here, since the guide roller 10b is interposed between the second staircase portion 11 and the first staircase portion 10, the guide roller 10b rolls, so that the second staircase portion 11 is provided. Can be smoothly slid with respect to the first staircase portion 10. Further, as shown in FIGS. 3 and 4, the auxiliary frame 20 is formed by guide rollers 10c, 12a, and 20c provided on the first step portion 10, the first side frame 12, and the auxiliary frame 20 itself. Since they are supported, they can be slid smoothly with respect to the first step portion 10 and the first side frame 12 by rolling. The second upper guide 23 and the second lower guide 24 supported by the auxiliary frame 20 are mounted on the mounting table 2 by the second upper roller 32, the third upper roller 33, and the second lower roller 35. Since these are only supported, they can slide smoothly by rolling. Then, by adjusting the amount of movement by the hydraulic cylinder 8 and adjusting the height of the horizontal floor 16, it is possible to deal with the entrances P having various heights.

  As shown in FIG. 3, when the horizontal floor 16 is set to an optimum height, the first staircase portion 10 and the second staircase portion 11 can be lifted and lowered when walking up and down by walking. It becomes possible. On the other hand, when the vehicle is mounted on the mounting table 2 and moved up and down, the electric winch 42 is driven as described above. That is, when the mounting table 2 is positioned on the ground G, the pulling wire 43 is wound up by the electric winch 42. Thereby, the mounting table 2 is configured such that the first upper roller 31 and the second upper roller 32 and the first lower roller 34 roll the first upper guide 21 and the first lower guide 22. , It moves up and down X. Further, in the intermediate range where the first upper guide 21 and the second upper guide 23 overlap, and the first lower guide 22 and the second lower guide 24 overlap, the second upper roller 32 and the second upper guide 32 are further provided. The third upper roller 33 and the second lower roller 35 also roll on the second upper guide 23 and the second lower guide 24. Then, above the front ends of the first upper guide 21 and the first lower guide 22, the mounting table 2 is transferred to the second upper guide 23 and the second lower guide 24, and further in the up-and-down direction X. The passenger M can be transported to the position of the horizontal floor 16.

  As described above, in the passenger step wheel 1 of the present embodiment, the mounting table 2 is moved to the first upper guide 21 by the first upper roller 31 and the second upper roller 32 which are the first support portions. Furthermore, the first lower roller 34 which is another first support part is movably supported by the first lower guide 22, and the second upper roller 32 and the third support part which are second support parts. The upper roller 33 is movably supported by the second upper guide 23, and the second lower roller 35, which is another second support portion, is movably supported by the second lower guide 24. For this reason, the second upper guide 23 and the second lower guide 24 are moved in the ascending / descending direction X with respect to the first upper guide 21 and the first lower guide 22 by the hydraulic cylinder 8 as a moving means. Thus, the passenger M on the mounting table 2 can be transported easily corresponding to various elevation heights.

  In the present embodiment, the two guides of the second upper guide 23 and the second lower guide 24 are moved in the ascending / descending direction X with respect to the two guides of the first upper guide 21 and the first lower guide 22. Although movable, it is not limited to this. It suffices that at least one second guide extending substantially parallel to at least one first guide extending from at least the lower floor surface can be moved by moving means such as the hydraulic cylinder 8 as an example. However, the mounting table 2 can be moved up and down in a more stable state by providing a plurality of sets of the upper and lower portions of the mounting table 2 as in the present embodiment. In addition, a plurality of second guides may be provided for one first guide, and second support portions may be provided so as to be movable with respect to each second guide. By doing in this way, the raising / lowering height can be adjusted in multiple steps by a plurality of second guides.

  Further, in the present embodiment, the first upper roller 31 and the second upper roller with respect to the first upper guide 21, the first lower guide 22, the second upper guide 23, and the second lower guide 24. 32, the third upper roller 33, the first lower roller 34, and the second lower roller 35 are provided two by two. However, the present invention is not limited to this, and at least one may be provided. However, by providing a plurality of support portions for each guide, the mounting table 2 can be supported and transported in a more stable state.

  Further, in the present embodiment, the configuration serving as the first support portion and the second support portion is configured by a rollable roller, but is not limited thereto, and is moved by providing a large number of rollers on the guide side. It may be possible, or it may be simply slidable with respect to the guide.

  In the present embodiment, the passenger step wheel 1 is used as an example of the lifting device, but the present invention is not limited to this, and the first step portion 10 and the second step portion 11 may not be provided. . Also by this, the conveyance body containing the passenger M etc. can be raised / lowered suitably by making raising / lowering height free. In the present embodiment, the electric winch 42 is given as an example of propulsion means for propelling the mounting table 2 in the up-and-down direction X, and hydraulic means is used as movement means for moving the second upper guide 23 and the second lower guide 24 back and forth. Although the cylinder 8 is taken as an example, the present invention is not limited to this. Various known means can be applied. For example, the propulsion means may be a hydraulic winch or a hydraulic motor.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

It is a side view of the passenger step wheel of the embodiment of the present invention. It is a side view which shows the detail of a mounting base in the passenger step wheel of embodiment of this invention. It is a side view at the time of changing the raising / lowering height of the passenger step wheel of embodiment of this invention. FIG. 4 is a cross-sectional view taken along section line AA in FIGS. 1 and 3 according to the embodiment of the present invention.

Explanation of symbols

1 Passenger step wheel (lifting device)
2 Mounting table 8 Hydraulic cylinder (moving means)
10 First staircase portion 11 Second staircase portion 21 First upper guide (first guide)
22 First lower guide (first guide)
23 Second upper guide (second guide)
24 Second lower guide (second guide)
31 First upper roller (first support part)
32 Second upper roller (first support part, second support part)
33 Third upper roller (second support part)
34 First lower roller (first support)
35 Second lower roller (second support part)
42 Electric winch (propulsion means)
G Ground (lower floor)
Floor of the P1 door (upper floor)

Claims (5)

In the lifting device that lifts and lowers the conveyed object from the lower floor surface to the upper floor surface,
At least one first guide extending in the ascending / descending direction from the lower floor surface;
At least one second guide extending substantially parallel to the first guide;
Moving means capable of moving the second guide upward along the first guide;
A mounting table on which the transported body is mounted;
A first support part capable of supporting the mounting table movably with the first guide;
A second support portion capable of supporting the mounting table movably with the second guide;
A lifting device characterized in that the mounting table includes a propelling means for imparting a propelling force in the lifting direction. The lifting device according to claim 1,
A lifting device comprising a plurality of sets each including the first guide and the first support, and the second guide and the second support. The lifting device according to claim 1 or 2,
A lifting device comprising a plurality of first support portions and a plurality of second support portions respectively corresponding to the first guide and the second guide. In the raising / lowering device in any one of Claims 1-3,
The lifting device according to claim 1, wherein the first support portion and the second support portion are rollers capable of rolling the corresponding first guide or the second guide. In the raising / lowering apparatus in any one of Claims 1-4,
A first staircase extending from the lower floor surface along the lifting direction;
A second staircase portion extending so as to be substantially parallel to the first staircase portion,
The elevating apparatus characterized in that the moving means can move the second step portion together with the second guide upward along the first guide.

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