JP5581024B2 - Three-dimensional parking device - Google Patents

Description

  The present invention relates to a multi-story parking apparatus.

  As an example of a conventional pit type three-dimensional parking apparatus, for example, one described in Patent Document 1 is known. In this conventional multi-story parking apparatus, a plurality of rows of multi-stage pallet lifting bodies composed of a plurality of pallets arranged in the vertical direction are arranged in a pit formed at a predetermined depth from the ground surface of the vehicle. In this three-dimensional parking apparatus, the lifting / lowering chain is fed and taken up by the drive unit via the chain sprocket provided at the lower part of the pallet lifting / lowering body, so that the pallet lifting / lowering body moves up and down. .

  By the way, in recent years, so-called compact cars that are easy to drive and can reduce the parking width are increasing. In this compact car, instead of reducing the overall length and width, the ceiling height is increased to secure the indoor volume, and the vehicle height is higher than the vehicle height of a conventional vehicle. For this reason, in order to deal with a vehicle having a high vehicle height such as a compact car, there is a need for a space between pallets, which increases the overall height of the apparatus.

  On the other hand, if the height of the multistory parking device is increased, if the height from the installation surface of the device exceeds 8m, for example, it will be treated as a building or a designated work by law, and the structure will be changed. Since it becomes a thing with a restriction | limiting of an application, etc., it is calculated | required to store a three-dimensional parking apparatus in a comparatively shallow pit. Therefore, there is a problem that it is necessary to save the space in the height direction of the entire multi-story parking apparatus while sufficiently securing the interval between the pallets.

  In this regard, for example, in the multi-story parking device described in Patent Document 2, a fixing portion that is provided at the lower end portion of the support column and fixes the end portion of the balance chain is attached to the front surface or the rear surface of the support column that is outside the lifting region of the balance chain bracket. By placing it, the balance chain is lowered to near the bottom of the pit. Thus, by setting the balance chain bracket and the lower pallet at the lowered position of the pallet lifting body to a lower position than before, the distance between the upper pallet and the lower pallet is increased while storing in the existing pit. We are trying to solve this problem.

JP 2006-83645 A JP 2007-146543 A

  Here, in the conventional pit type multi-story parking apparatus as described above, it is necessary to set the position of the elevating drive shaft linked to the drive unit higher than the ground surface due to the structure of the lifting system using the suspension chain. Therefore, the height of the road plate provided on the plurality of columns to which the lifting drive shaft and the like are attached is set higher than the ground surface by the amount that the lifting drive shaft is raised from the ground surface. However, recently, since the road board protrudes from the ground surface, it is difficult to get on and off and walk, and therefore, it is required to make the protrusion of the road board as low as possible from the ground surface.

  However, when the elevating drive shaft is provided at a lower position in the three-dimensional parking apparatus of Patent Documents 1 and 2, the elevating drive shaft and the chain sprocket are very close or interfere with each other at the upper limit position of the lower pallet. When the lower pallet overruns for some reason, the elevating drive shaft and the chain sprocket interfere with each other. Therefore, when the elevating drive shaft is provided at a low position, a certain interval must be ensured between the elevating drive shaft and the chain sprocket in the height direction, and a deeper pit is required. Therefore, there is a problem that an existing pit has to be rebuilt.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a three-dimensional parking apparatus that can lower a road plate with respect to the ground surface without increasing the depth of a pit. .

  In order to solve the above problems, a multilevel parking apparatus according to the present invention is a multilevel parking apparatus provided in a pit formed at a predetermined depth from a boarding surface of a vehicle, and a pallet on which the vehicle is placed. A pallet lifting body formed by connecting the pallet lifting body in multiple stages, a pit strut standing on the pit on the front, rear, left and right sides of the pallet lifting body, And a lifting drive shaft fixed to a lifting sprocket around which one end of the suspension chain is wound and rotatably supported between upper portions of the front and rear pit struts located on one side of the pallet lifting body. A pair of chain sprockets on both sides of the lower pallet of the lifting body, with the suspension chains meshing with the fixed positions of the lifting sprockets Fixed sprocket chains is characterized in that it is disposed in a position that does not overlap with the sprocket lifting when viewed from the lifting direction of the pallet lift.

  In this three-dimensional parking apparatus, the chain sprocket is disposed at a position where it does not overlap with the lifting sprocket as seen from the lifting direction of the pallet lifting body. Thus, even when the pallet lifting body is raised and the lower pallet is raised to the vicinity of the height position where the lifting drive shaft is installed, the chain sprocket and the lifting sprocket do not interfere with each other. For this reason, the mounting position of the lifting drive shaft can be lowered by an amount corresponding to the rise of the lower pallet, so that the height position of the lifting drive shaft can be set low. As a result, the height of the road plate can be lowered with respect to the ground surface by the amount that the elevation drive shaft is lowered with respect to the ground surface. In addition, since the interference between the chain sprocket and the lifting sprocket can be avoided, it is not necessary to secure a certain distance between the chain sprocket and the lifting sprocket in the height direction, and it is necessary to deepen the pit. There is no. Therefore, the road plate can be lowered with respect to the ground surface without increasing the depth of the pits.

  In addition, the distance between the fixed position of the lifting sprocket and the fixed position on the other end of the suspension chain is larger than the distance between the fixed positions of the pair of chain sprockets, and the pallet lifting body is located on the other end side of the suspension chain. It is preferable that a predetermined interval is provided between the lifting sprocket and the chain sprocket. In this way, the pallet lifting body is unevenly distributed in the pit to provide a predetermined interval, so that a predetermined interval can be secured between the lifting sprocket and the chain sprocket, so that the lifting sprocket and the chain sprocket can be securely connected. It can be configured not to overlap.

  The suspension chain is stretched substantially vertically along the pit strut between the fixed position on the other end side of the suspension chain and the chain rising position of the chain sprocket, and the chain spanning position of the lifting sprocket And the chain rising position of the chain sprocket are inclined with respect to the pit post, and the pallet lifting body is unevenly distributed on the other end side of the suspension chain, so that the lifting sprocket and the chain sprocket are It is preferable that a predetermined interval is provided between them. In this way, the suspension chain is stretched, and the pallet lifting body is unevenly distributed in the pit to provide a predetermined interval, so that a predetermined interval can be secured between the lifting sprocket and the chain sprocket. The chain sprocket can be configured so as not to overlap with the chain sprocket.

  Further, the predetermined interval is preferably larger than the total height of the teeth of the chain sprocket. Thereby, interference (contact of a tooth tip) between the lifting sprocket and the chain sprocket can be reliably prevented.

  In addition, it is preferable to further include guide means for guiding the lifting and lowering of the pallet lifting body so that a predetermined interval is maintained. Since a lateral load is applied to the pallet lifting / lowering body in a certain direction when the pallet lifts and lowers, the lateral movement and roll may occur. Therefore, by providing the guide means, a predetermined distance is maintained during lifting, so that the pallet lifting body can be stably lifted and the pallet lifting body can be prevented from rolling.

  The guide means is preferably a guide roller that is provided on the lower pallet and abuts against the side surface of the pit column on which the elevating drive shaft is pivotally supported. The pallet lifting / lowering body has a large swing width of the lower pallet arranged at the lower part due to the structure of being lifted by the suspension chain. Therefore, by providing the guide roller on the lower pallet, the pallet lifting body can be lifted and lowered more stably. Further, since the guide roller is brought into contact with the support column, it is not necessary to newly provide a guide rail, and a simple configuration can be achieved.

  Moreover, it is preferable that the bearing of the raising / lowering drive shaft is fixed to the front and rear pit columns, and the guide roller is in contact with the side surface of the pit column corresponding to the fixed position of the bearing. The tension due to the suspension chain is received by the pit strut through a bearing that supports the lifting drive shaft. The directions of the loads applied by the bearings and the guide rollers to the side surfaces of the pit columns are opposite to each other. Therefore, the load applied to the pit strut can be minimized by bringing the guide roller into contact with the side surface of the pit strut at a position where the guide roller and the bearing are on the same line.

  Moreover, it is preferable that the height of the guide roller is equal to or less than the height of the chain sprocket. In this case, for example, by setting the height of the guide roller to the same height as the chain sprocket, the tension of the horizontal component of the suspension chain is borne by the guide roller at the same position. Does not affect rollover prevention. Further, even when the guide roller is positioned lower than the height of the chain sprocket, the reaction force of the guide roller does not adversely affect the balance of the pallet lifting body. Therefore, stability can be given to raising / lowering of a pallet raising / lowering body.

  According to the present invention, the road plate can be lowered with respect to the ground surface without increasing the depth of the pits.

It is a front view which shows the three-dimensional parking apparatus which concerns on 1st Embodiment of this invention. It is a side view of the multi-story parking apparatus shown in FIG. It is a top view of the multi-story parking apparatus shown in FIG. It is a figure which shows the positional relationship of a raising / lowering drive shaft and the sprocket for suspension chains. It is a figure which shows the relationship between a ground surface and a road board. It is a figure which shows the structure of a lower pallet.

  Hereinafter, preferred embodiments of a multi-story parking apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view showing a multi-story parking apparatus according to a first embodiment of the present invention. 2 is a side view thereof, and FIG. 3 is a top view thereof. As shown in FIGS. 1 to 3, the multi-story parking apparatus 1 is provided in a pit P formed by excavating a predetermined depth from the ground surface G (boarding surface of the vehicle K) on which the vehicle K travels. ing. Hereinafter, the entrance / exit side of the vehicle K will be described as the front side.

  In the pit P, the multi-story parking device 1 has a frame 2. The frame 2 is constituted by a front column 3 and a rear column 4 that are erected in a pair of left and right sides on the front side and the rear side of the pit P. The front and rear struts 3 and 4 are made of H-section steel. A pallet elevating body 5 is arranged in a space surrounded by the frame body 2.

  The pallet lifting / lowering body 5 includes a plurality of (two in this embodiment) pallets 6 on which the vehicle K is placed, and a front pallet column 7 and a rear pallet column 8 disposed on both sides of the pallet 6. Yes. That is, the pallet elevating body 5 has an upper pallet 6a and a lower pallet 6b, and each pallet 6a, 6b is connected in two stages by a pair of front and rear pallet columns 7 and 8 at the front and rear.

  In addition, the front suspension chain 12 and the rear suspension chain 13 are disposed on the front and rear lower portions of the pallet lifting body 5 via front and rear suspension chain sprockets 10 and 11 provided on both sides of the lower pallet 6b. The two hanging chains are stretched over. The pallet elevating body 5 is suspended from the bottom surface of the pit P to a predetermined height by the front suspension chain 12 and the rear suspension chain 13.

  As shown in FIG. 2, a balance chain 15 is bridged on the front side of the pallet lifting body 5 via a balance chain sprocket 14 provided on the lower pallet 6b. One end of the balance chain 15 is connected to a chain holder (not shown) fixed to the upper end of the front column 3, and the other end is fixed to the chain fixing portion 16 via the balance chain sprocket 14. . That is, the balance chain 15 is stretched between the upper end portion of the front column 3 and the lower portion of the front column 3 via the balance chain sprocket 14.

  On the other hand, a road plate M is provided between the top of the front column 3 and the top of the rear column 4. The road plate M protrudes upward from the ground surface G so as to cover the tops of the front and rear columns 3, 4 and extends in the front-rear direction of the pallet 6. A passage is formed by cooperation with the moved pallet 6.

  Then, the raising / lowering mechanism of the pallet raising / lowering body 5 mentioned above is demonstrated. The lifting mechanism of the pallet lifting body 5 includes a drive motor 17 and a lifting drive shaft 18 as shown in FIG. 2 in addition to the front suspension chain 12, the rear suspension chain 13, and the balance chain 15 described above. .

  The drive motor 17 has a drive sprocket 19, and the main body portion of the drive motor 17 is fixed to the rear column 4 on one side of the frame 2 via a bracket (not shown). Further, the elevating drive shaft 18 is rotatably supported by bearings 30a and 30b (see FIG. 3) between the upper portion of the front column 3 and the upper portion of the rear column 4. An interlocking sprocket 20 is fixed to the rear end portion of the elevating drive shaft 18, and an endless chain 21 is bridged between the interlocking sprocket 20 and the driving sprocket 19.

  A front suspension sprocket 22 and a rear suspension sprocket 23 are respectively fixed to the front and rear sides of the elevating drive shaft 18 so as to correspond to the positions of the front suspension chain sprocket 10 and the rear suspension chain sprocket 11. Yes. One end side of the front suspension chain 12 and the rear suspension chain 13 are wound around the suspension sprockets 22 and 23, respectively. In addition, the one end part of each suspension chain 12 and 13 is being fixed to the fixing | fixed part which is not shown in figure.

  The front suspension chain 12 and the rear suspension chain 13 are bridged in the width direction below the lower pallet 6b via the front suspension chain sprocket 10 and the rear suspension chain sprocket 11, and each of the suspension chains 12, 13 The end side is fixed to the upper part of the front column 3 via a fixing part 24 (see FIG. 1).

  Here, as shown in FIG. 1, the interval between the fixed positions of the suspension sprockets 22 and 23 and the fixed position of the fixing portion 24 is larger than the interval between the fixed positions of the pair of suspension chain sprockets 10 and 11. ing. And in the pit P, the pallet elevating body 5 is unevenly distributed on the fixed portion 24 side to which the other ends of the suspension chains 12 and 13 are fixed. With such a configuration, a space W is provided between the front suspension chain sprocket 10 and the rear suspension chain sprocket 11, and the front suspension sprocket 22 and the rear suspension sprocket 23. As a result, the suspension chain sprockets 10 and 11 and the suspension sprockets 22 and 23 are arranged at positions that do not overlap each other when viewed from the ascending / descending direction of the pallet elevating body 5 (see FIG. 7).

  Specifically, the distance W in the width direction between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 is at least the total height of the teeth of each suspension chain sprocket 10, 11 (suspension chain). It is larger than the (outer diameter-bottom circle diameter) / 2) of the sprocket 10 for suspension or the sprocket 11 for suspension chain, for example, about 90 to 100 mm. That is, each suspension chain 12, 13 is located between the chain center at the chain rising position of each suspension chain sprocket 10, 11 (left side in FIG. 1) and the chain center at the chain spanning position of each suspension sprocket 22, 23. In this case, it is inclined with respect to the columns 3 and 4. The chain rising position is on the side of the suspension sprockets 22 and 23 having the pitch circle diameter of the suspension chain sprockets 10 and 11. The chain crossing position is the side of each suspension chain sprocket 10, 11 having the pitch circle diameter of each suspension sprocket 22, 23.

  On the other hand, the suspension chain sprockets 10 and 11 on the fixed part 24 side are arranged directly below the fixed part 24, and the distance between the suspension chain sprockets 10 and 11 and the fixed part 24 is set to a distance W. Narrow to ensure. That is, the suspension chains 12 and 13 are substantially arranged along the support columns 3 and 4 between the fixed position of the fixing portion 24 and the chain center at the chain rising position of the suspension chain sprockets 10 and 11 (right side in FIG. 1). It is stretched vertically.

  Further, a guide roller 27 is provided on the lower pallet 6b. The guide roller 27 guides the lifting and lowering of the pallet lifting body 5 so that the distance W between the suspension sprockets 22 and 23 and the suspension chain sprockets 10 and 11 is maintained. The contact portion 29 is provided. The support portion 28 has an L shape and is attached to the lower portion of the lower pallet 6b so as to protrude obliquely downward from the lower pallet 6b toward the front and rear columns 3 and 4 (left side in the drawing). Further, the contact portion 29 is circular and is provided so as to be rotatable with respect to the support portion 28, and the height thereof is lower than the height of each suspension chain sprocket 10, 11.

  In the guide roller 27 having such a configuration, the abutting portion 29 abuts on the one side surfaces 3 a and 4 a of the front and rear struts 3 and 4. Specifically, as shown in FIG. 3, the front and rear struts 3 and 4 are provided with pillow-type unit bearings 30 a and 30 b that support the elevating drive shaft 18. In the lower pallet 6b, the front and rear struts 3, 4 and the abutting portion 29 are attached so as to abut on the same line as the fixed positions of the bearings 30a, 30b on the front and rear struts 3, 4. . One side surfaces 3 a and 4 a of the front and rear columns 3 and 4 function as guide rails corresponding to the guide rollers 27.

  Next, the effect of the multi-story parking apparatus 1 having the above configuration will be described.

  Fig.4 (a) is a figure which shows the positional relationship of the raising / lowering drive shaft and suspension chain sprocket in the conventional multi-story parking apparatus. As shown in FIG. 4 (a), in the conventional multi-story parking apparatus 1A, since the width direction interval W1 between each suspension chain sprocket 10a and each suspension sprocket 22a is not secured, the lower pallet 6A is If it is raised too much, each suspension chain sprocket 10a and each suspension sprocket 22a may interfere with each other. Therefore, the vertical interval A between each suspension chain sprocket 10a and each suspension sprocket 22a cannot be reduced. Therefore, when the position of the lift drive shaft is set low, it is necessary to make the pit deeper, and the existing pit must be recreated.

  On the other hand, as shown in FIG. 4 (b), in the multi-story parking apparatus 1 of the present invention, the distance W between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 as described above. Therefore, even when the lower pallet 6b is raised to the vicinity of the lifting drive shaft 18, the tooth tips of the suspension chain sprockets 10, 11 and the suspension sprockets 22, 23 collide with each other. There is no. Therefore, the vertical interval B between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 can be made smaller than the interval A in the conventional multi-story parking apparatus 1A (B << A). In the multi-story parking apparatus 1 of the present invention, the vertical spacing B between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 can be reduced by, for example, about 50 mm, compared to the conventional multi-story parking apparatus 1A. it can.

  Accordingly, as shown in FIG. 5A, in the conventional multi-story parking apparatus 1A, it is difficult to lower the position of the lifting drive shaft while saving the space in the height direction. Whereas the height C projects from the ground surface G, the multi-story parking apparatus 1 can lower the elevating drive shaft 18 as shown in FIG. The height D (C >> D). That is, the height D of the road plate M is equal to the distance (AB) in which the vertical distance B between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 is smaller than the conventional distance A. Can be made smaller than the height C of the road plate M1 (A−B = C−D). Therefore, the road plate M can be lowered with respect to the ground surface G without forming the pits P deeply.

  As described above, in the multi-story parking apparatus 1, the suspension chain sprockets 10, 11 are arranged at positions that do not overlap the suspension sprockets 22, 23 when viewed from the lifting direction of the pallet lifting body 5. Thereby, even when the lower pallet 6b is raised to the vicinity of the height position where the elevating drive shaft 18 is installed, the front and rear suspension chain sprockets 10, 11 and the front and rear suspension sprockets 22, No interference with 23 (tooth tip collides). Therefore, the mounting position of the elevating drive shaft 18 can be lowered by the amount that the lower pallet 6b is raised, so that the height position of the elevating drive shaft 18 with respect to the ground surface G can be set low. As a result, the height of the road plate M can be lowered with respect to the ground surface G by the amount that the lifting drive shaft 18 is lowered with respect to the ground surface G. In addition, since the interference between the suspension chain sprockets 10 and 11 and the suspension sprockets 22 and 23 can be avoided, the suspension chain sprockets 10 and 11 and the suspension sprockets 22 and 23 can be prevented in the height direction. There is no need to ensure a certain interval between them, and pits need not be formed deeply. Therefore, in the multilevel parking device 1, the height of the road plate M with respect to the ground surface G can be reduced without increasing the depth of the pits P.

  Further, the interval between the fixed position of each suspension sprocket 22, 23 and the position of the fixing portion 24 to which each suspension chain 12, 13 is fixed is larger than the interval between the fixed positions of the pair of suspension chain sprockets 10, 11. The pallet elevating body 5 is unevenly distributed on the fixing portion 24, so that a space W is provided between the suspension sprockets 22 and 23 and the suspension chain sprockets 10 and 11. Thus, the pallet lifting body 5 is unevenly distributed in the pit P by making the interval between the pair of suspension chain sprockets 10 and 11 smaller than the interval in the width direction where the suspension chains 12 and 13 are stretched. Can be made. Since the distance W between each suspension chain sprocket 10, 11 and each suspension sprocket 22, 23 can be secured by the amount of uneven distribution of the pallet lifting body 5, each suspension chain sprocket 10, 11, and each The suspension sprockets 22 and 23 can be configured so as not to overlap with each other.

  In addition, since the interval W is larger than the total height of the teeth of the suspension chain sprockets 10 and 11, interference between the suspension sprockets 22 and 23 and the suspension chain sprockets 10 and 11 (contact of the tooth tips). ) Can be reliably prevented.

  The multi-story parking apparatus 1 is provided with a guide roller 27 that guides the lifting and lowering of the pallet lifting body 5 so that the interval W is maintained. Since a lateral load is applied to the pallet lifting / lowering body 5 in a certain direction during lifting / lowering, movement and rolling may occur in the lateral direction. Therefore, by providing the guide roller 27, the distance W is maintained during the lifting, so that the pallet lifting body 5 can be lifted and lowered stably, and the pallet lifting body 5 can be prevented from rolling. As a result, the interval W between the front and rear suspension chain sprockets 10 and 11 on the lifting drive shaft 18 side and the front and rear suspension sprockets 22 and 23 can be reliably maintained.

  Further, the guide roller 27 is provided on the lower pallet 6b, and the abutting portion 29 abuts on one side surfaces 3a and 4a of the columns 3 and 4 on which 18 lift driving shafts are supported. The height of the contact portion 29 of the guide roller 27 is lower than the height of the suspension chain sprockets 10 and 11. The pallet lifting / lowering body 5 has a large swinging width of the lower pallet 6b disposed in the lower part due to the structure of being lifted by the suspension chains 12 and 13. Therefore, the guide roller 27 is provided on the lower pallet 6b, and the height of the guide roller 27 is lower than the height of the suspension chain sprockets 10 and 11, whereby the pallet lifting body 5 can be raised and lowered more stably. Further, since the guide roller 27 is brought into contact with the side surfaces 3a and 4a of the support columns 3 and 4, it is not necessary to newly provide a guide rail, and a simple configuration can be achieved.

  Further, the bearings 30a and 30b of the elevating drive shaft 18 are fixed to the columns 3 and 4, and the contact portion 29 of the guide roller 27 corresponds to the fixing position of the bearings 30a and 30b. It is in contact with one side surface 3a, 3b. The tension due to the suspension chains 12 and 13 is received by the support columns 3 and 4 via the bearings 30a and 30b that support the lifting drive shaft 18. Therefore, by providing the guide roller 27 at a position where the guide roller 27 and the fixed position of the bearings 30a and 30b on the support columns 3 and 4 are on the same line, the force by which the bearings 30a and 30b are pulled toward the pallet 6 side and the guide roller Since the force which 27 pushes to the raising / lowering drive shaft 18 side is added on the same line from the direction which mutually opposes, the burden added to the front side and the back side support | pillars 3 and 4 can be suppressed to the minimum.

  Here, for example, when the guide roller 27 is provided at a position higher than the height of the sprockets 10 and 11 for the suspension chains, the horizontal load of the suspension chains 12 and 13 is applied to the pallet using the contact portion 29 of the guide roller 27 as a fulcrum. It changes into the force which is going to make the raising / lowering body 5 capsize. On the other hand, in the present embodiment, the contact portion 29 of the guide roller 27 is provided at a position lower than the height of each suspension chain sprocket 10, 11, so that the reaction force of the guide roller 27 is applied to the pallet lifting body 5. It does not adversely affect the balance (prevention of rollover of the pallet lifting body 5). Therefore, the guide roller 27 can suitably guide the pallet elevating body 5.

  Further, in the above-described multi-story parking device 1, a gap W is provided between the front and rear suspension sprockets 22, 23 of the elevating drive shaft 18 and the front and rear suspension chain sprockets 10, 11. The mounting position of the elevating drive shaft 18 is lowered by avoiding the previous collision, and the road plate M is set as low as possible with respect to the ground surface G. The following effects can be obtained. Specifically, this will be described with reference to FIG. 6A and 6B are diagrams showing the configuration of the lower pallet, in which FIG. 6A shows a conventional lower pallet, and FIG. 6B shows the lower pallet of the multilevel parking apparatus according to the present invention.

  As shown in FIG. 6A, the lower pallet 6A provided in the conventional multilevel parking apparatus 1A (see FIG. 4A) avoids interference between the lifting sprocket 22a of the lifting drive shaft and the chain sprocket 10a. For this reason, since it is necessary to lower the spanning position of the suspension chain, a thickness E is generated in the structure. As a result, the space in the height direction of the apparatus is required by the thickness E of the lower pallet 6A, so it is difficult to reduce the depth of the pits.

  On the other hand, in the three-dimensional parking apparatus 1 of the present invention, a space W is secured between the front and rear suspension sprockets 22 and 23 of the elevating drive shaft 18 and the front and rear suspension chain sprockets 10 and 11. Because of this, collision between the tooth tips can be avoided. Accordingly, since it is not necessary to lower the position where the suspension chains 12 and 13 are bridged, as shown in FIG. 6B, the thickness F of the lower pallet 6b is made thinner than the conventional structure of the lower pallet 6A (F ≪E). This difference in thickness (E-F) is the vertical distance A between each conventional suspension chain sprocket 10a and each suspension sprocket 22a shown in FIG. 4, and each suspension chain sprocket 10, 11 and each suspension. This is equivalent to the difference between the vertical distance B between the sprockets 22 and 23 (E−F = B−A).

  Accordingly, as shown in FIG. 6 (c), the tooth tip is provided with a gap W between the front and rear suspension sprockets 22, 23 of the elevating drive shaft 18 and the front and rear suspension chain sprockets 10, 11. By avoiding the collision between each other, the thickness of the lower pallet 6b can be made smaller than that of the conventional lower pallet 6A, so that the space in the height direction of the apparatus can be saved by the reduced thickness. As a result, the depth of the pits P can be reduced by the reduced thickness (EF) instead of reducing the height of the road plate M with respect to the ground surface G. That is, in the multilevel parking device 1 of the present invention, the height of the elevating drive shaft 18 can be set low without changing the depth of the pit P, and the height of the road plate M with respect to the ground surface G can be reduced. In addition, in the case of a configuration in which the height of the lift drive shaft 18 is not changed, the depth of the pit P can be reduced.

  The present invention is not limited to the embodiment described above. For example, in the above embodiment, the height of the contact portion 29 of the guide roller 27 is lower than the heights of the front and rear suspension chain sprockets 10 and 11, but the front and rear suspension chain sprockets. The guide roller 27 may be provided at the same height as 10 and 11. Also in this case, since the guide roller 27 bears the tension of the horizontal component of the suspension chains 12 and 13 at the same position, the balance of the pallet lifting body 5 is not affected.

  Further, in addition to the above-described embodiment, a control stop operation may be performed by an overshoot limiting device that prevents the pallet 6 from overtraveling. Moreover, when the overrun exceeding the upper limit of the raising / lowering of the pallet 6 occurs, a structure may be provided in which excessive overshooting is mechanically prevented by contact between the hanging bracket and the frame structure.

  Moreover, in the said embodiment, the height position with respect to the ground surface G of the road board M is set low by setting the height position of the raising / lowering drive shaft 18 low, and the height position of the raising / lowering drive shaft 18 is not changed. Although the configuration of reducing the depth of the pit P by reducing the thickness of the lower pallet 6b is shown, of course, by combining both configurations, the height position of the elevating drive shaft 18 can be lowered and the lower pallet 6b can be lowered. By reducing the thickness of the pallet 6b, it is possible to reduce the depth of the pits P while reducing the height of the road plate M with respect to the ground surface G.

  DESCRIPTION OF SYMBOLS 1,40 ... Three-dimensional parking apparatus, 3, 4 ... Column (pit column), 5 ... Pallet raising / lowering body, 6 (6a, 6b) ... Pallet, 6a ... Lower pallet, 7, 8 ... Pallet column, 10, 11 ... Hanging Sprocket for chain (sprocket for chain), 12, 13 ... suspension chain, 18 ... lifting shaft, 22, 23 ... sprocket for suspension (sprocket for lifting), 27 ... guide roller (guide means), 30a, 30b ... bearing, G: Ground surface (boarding surface), K: Vehicle, P: Pit.

Claims (7)

A multi-story parking device provided in a pit formed at a predetermined depth from a vehicle entry surface,
A pallet lifting body formed by connecting pallets on which the vehicle is mounted in multiple stages with pallet columns;
Pit struts erected in the pit on the front, rear, left and right of the pallet lifting body,
A suspension chain that spans the lower part of the pallet lifting body and lifts the pallet lifting body;
A lifting drive shaft fixed to a lifting sprocket on which one end side of the suspension chain is wound, and is rotatably supported between upper portions of the front and rear pit columns positioned on one side of the pallet lifting body. ,
On both sides of the lower pallet in the pallet lifting body, a pair of chain sprockets meshed with the suspension chain corresponding to the fixed position of the lifting sprocket is fixed,
The interval between the fixed position of the lifting sprocket and the fixed position on the other end of the suspension chain is larger than the interval between the fixed positions of the pair of chain sprockets,
When the pallet lifting body is unevenly distributed on the other end side of the suspension chain, when the pallet is moved to the vicinity of the lifting drive shaft, the fixed position of the lifting sprocket and the fixed position of the chain sprocket There is a predetermined interval between
The three-dimensional parking apparatus characterized in that the predetermined interval is held by guide means for guiding the lifting and lowering of the pallet lifting body . A multi-story parking device provided in a pit formed at a predetermined depth from a vehicle entry surface,
A pallet lifting body formed by connecting pallets on which the vehicle is mounted in multiple stages with pallet columns;
Pit struts erected in the pit on the front, rear, left and right of the pallet lifting body ,
A suspension chain that spans the lower part of the pallet lifting body and lifts the pallet lifting body;
A lifting drive shaft fixed to a lifting sprocket on which one end side of the suspension chain is wound, and is rotatably supported between upper portions of the front and rear pit columns positioned on one side of the pallet lifting body. ,
On both sides of the lower pallet in the pallet lifting body, a pair of chain sprockets meshed with the suspension chain corresponding to the fixed position of the lifting sprocket is fixed,
The suspension chain is stretched substantially vertically along the pit post between a fixed position on the other end side of the suspension chain and a chain rising position of the chain sprocket, and the chain of the lifting sprocket Between the spanning position and the chain rising position of the chain sprocket, it is inclined with respect to the pit strut,
When the pallet lifting body is unevenly distributed on the other end side of the suspension chain, when the pallet is moved to the vicinity of the lifting drive shaft, the fixed position of the lifting sprocket and the fixed position of the chain sprocket There is a predetermined interval between
The three-dimensional parking apparatus characterized in that the predetermined interval is held by guide means for guiding the lifting and lowering of the pallet lifting body. The three-dimensional parking apparatus according to claim 1 or 2 , wherein the predetermined interval is larger than a total height of teeth of the chain sprocket. The three-dimensional parking apparatus according to any one of claims 1 to 3 , further comprising guide means for guiding the lifting and lowering of the pallet lifting body such that the predetermined interval is maintained. Said guide means, said provided in the lower pallet, the lifting drive shaft axially supported by the in any one of claims 1 to 4, characterized in that on the sides of the pit strut is in contact with the guide roller Three-dimensional parking device. Bearings of the elevating drive shaft are fixed to the front and rear pit struts on the one side,
The three-dimensional parking apparatus according to claim 5 , wherein the guide roller is in contact with a side surface of the pit post corresponding to a fixed position of the bearing. The three-dimensional parking apparatus according to claim 5 or 6 , wherein a height of the guide roller is equal to or less than a height of the chain sprocket.

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