JP2013167095A - Mechanical parking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanical parking device capable of switching a vertical motion/a traverse motion of a pallet while allowing thinning.SOLUTION: In a mechanical parking device 1, a suspension chain 47 and a driven sprocket 48 provided in an underframe 11 and a drive frame 13, respectively, function as moving pulleys in a lifting device 15. Accordingly, chain tension of the lifting device 15 can be reduced and the size of the suspension chain 47 can be made smaller. By the size reduction of the suspension chain 47, a sprocket having a smaller outer diameter can be used, and a direct mount structure in which a drive sprocket 43 is directly mounted on a drive shaft 42 of a drive motor 41 can be attained by miniaturization of a fixing mechanism on one end side of the suspension chain 47 and under service conditions of an allowable overhang load or less of the drive shaft 42 of the drive motor 41 while eliminating a speed reduction mechanism, thereby thinning and simplifying the device 1.

Description

  The present invention relates to a mechanical parking apparatus.

  As a mechanical parking system, there is a so-called puzzle type mechanical parking system that transports a pallet to a predetermined position while appropriately switching the vertical and horizontal movement of the pallet when entering and leaving the vehicle (see, for example, Patent Document 1). . A horizontal circulation type mechanical parking apparatus generally transports a pallet on which a vehicle is placed in a longitudinal direction (longitudinal direction of the vehicle) and a pallet in a transverse direction (vehicle width direction). However, a mechanism is required to prevent the vertical conveyance device and the horizontal conveyance device from interfering with each other.

Japanese Patent No. 4680559

  As a typical example of the mechanism for preventing the interference between the longitudinal conveying device and the transverse conveying device, a mechanism for changing the direction of part or all of the drive wheels for conveying the pallet is provided on the support side supporting the pallet. And the like which retract the other conveying device while one conveying device is driven, or jack up the pallet so that the pallet contacts only one conveying device. However, since the conventional mechanism involves a complicated mechanism in any case, the enlargement of the apparatus has been a problem. In particular, since the mechanical parking device is required to suppress the dimension in the height direction, there is a demand for a mechanism that enables switching between vertical and horizontal pallets while realizing a reduction in thickness.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mechanical parking device that enables switching between vertical and horizontal pallets while realizing a reduction in thickness.

  In order to solve the above problems, a mechanical parking device according to the present invention is a mechanical parking device including a pallet on which a vehicle is placed, and a longitudinal conveying device that conveys the pallet in a longitudinal direction is provided. A drive frame provided with a traverse conveying device that is disposed in the frame and conveys the pallet in the traverse direction, and an elevating device that raises and lowers the drive frame with respect to the underframe. A drive motor provided on the frame, a drive sprocket provided on the drive shaft of the drive motor, a suspension chain having one end fixed to the frame and the other end engaged with the drive sprocket, and a frame And a first driven sprocket provided on each of the drive frames and over which a suspension chain is stretched.

  In this mechanical parking device, in the lifting device that lifts and lowers the drive frame with respect to the frame, the first driven sprockets respectively provided on the frame and the drive frame function as a moving pulley. Therefore, the chain tension of the lifting device can be reduced, and the size of the suspension chain can be further reduced. By reducing the size of the suspension chain, it is possible to use a sprocket with a small outer diameter, as well as reducing the size of the support mechanism and the fixing mechanism on one end of the suspension chain, and the allowable overhang of the drive shaft of the drive motor while omitting the speed reduction mechanism A direct mount structure in which a drive sprocket is directly provided on the drive shaft of the drive motor can be realized by using the load under the load. Thereby, thickness reduction and simplification of an apparatus are realizable.

  The lifting device further includes a second driven sprocket provided on the frame adjacent to the drive sprocket, and a drive chain that circulates between the drive sprocket and the second driven sprocket. It is preferably engaged with the drive sprocket via the drive chain. Thereby, the raising / lowering stroke by a suspension chain is fully securable.

  The lifting device further includes one set of the first driven sprocket and the suspension chain so as to be symmetric with respect to the drive chain, and the other end side of one suspension chain is connected to the other end side of the other suspension chain. It is preferable to engage with the drive sprocket via the drive chain so as to make a relative relationship. In this case, the drive frame can be lifted and lowered more stably. Further, since the drive motor can be shared, it is possible to avoid complication of the apparatus and to save space.

  According to the present invention, it is possible to switch between vertical and horizontal pallets while realizing a reduction in thickness.

It is a schematic diagram showing one embodiment of a mechanical parking device concerning the present invention. It is a figure which shows an example of the vertical conveyance apparatus and horizontal conveyance apparatus of a pallet in the mechanical parking apparatus shown in FIG. It is a figure which shows an example of the raising / lowering apparatus of the drive frame in the mechanical parking apparatus shown in FIG. It is a figure which shows the descent | fall state of a drive frame. It is a figure which shows the raising state of a drive frame. It is a figure which shows the mode at the time of vehicle storage and a pallet longitudinal conveyance. It is a figure which shows the mode of switching of a pallet conveyance direction. It is a figure which shows the mode at the time of pallet transverse conveyance.

  Hereinafter, a preferred embodiment of a mechanical parking apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view showing an embodiment of a mechanical parking apparatus according to the present invention. As shown in the figure, the mechanical parking apparatus 1 includes a plurality of pallets 2 that include an empty space at least at one place and are arranged in a matrix on substantially the same plane. This mechanical parking device 1 is a so-called horizontal circulation type mechanical parking device, and when the vehicle C enters and leaves, the pallet 2 on which the vehicle C is placed is moved in the longitudinal direction (longitudinal direction of the vehicle C) and in the transverse direction ( The sheet is conveyed to a predetermined position while appropriately switching in the width direction of the vehicle C).

  As shown in FIG. 2, the mechanical parking device 1 is arranged in a frame 11 provided with a longitudinal conveyance device 12 that conveys the pallet 2 in the vertical direction, and the pallet 2 in the horizontal direction. A driving frame 13 provided with a transverse conveying device 14 for conveying the driving frame 13 and an elevating device 15 for raising and lowering the driving frame 13 with respect to the base frame 11.

  The underframe 11 extends in the transverse direction at intervals corresponding to the average wheelbase of the accommodating vehicle between the longitudinal beams 21 extending in the longitudinal direction at intervals corresponding to the width of the pallet 2 and the longitudinal beams 21, 21. A cross beam is formed by the existing cross beam 22. The space S1 surrounded by the vertical beam 21 and the horizontal beam 22 has a substantially rectangular shape in plan view so as to correspond to the planar shape of the pallet 2.

  The longitudinal conveyance device 12 includes a drive motor 23 disposed outside the space S1 in the longitudinal direction, and longitudinal wheels 24 respectively disposed on the left and right longitudinal beams 21. The drive motor 23 is fixed to a horizontal beam 25 extending between the vertical beams 21, 21, and the drive shaft 26 of the drive motor 23 extends toward the left and right vertical beams 21, 21, and through the bearings 27, the vertical beam 21. And is coupled to one of the longitudinal wheels 24.

  The longitudinal wheels 24 are arranged at three positions on the outer side surfaces of the longitudinal beams 21 with predetermined intervals between the position of the drive shaft 26 of the drive motor 23, the position near the transverse beam 22, and the position near the center of the space S1. Is arranged. A conveyor belt 28 circulates around each longitudinal wheel 24 and receives the driving force from the drive motor 23 to convey the pallet 2 in contact with the longitudinal wheel 24 in the longitudinal direction.

  On the other hand, the drive frame 13 has a substantially rectangular shape with a size slightly smaller than the frame 11 by the vertical beam 31 extending in the vertical direction and the horizontal beam 32 extending in the horizontal direction. The space S2 surrounded by the vertical beam 31 and the horizontal beam 32 has a substantially rectangular shape in plan view so as to have a substantially similar shape to the space S1 of the underframe 11.

  The transverse conveying device 14 includes a drive motor 33 arranged in the space S2 and transverse wheels 34 arranged on the front and rear transverse beams 32, respectively. The drive motor 33 is fixed to one longitudinal beam 31, and the drive shaft 35 of the drive motor 33 extends along the longitudinal beam 31 and is supported by the transverse beam 32 via a bearing 38 (see FIG. 3). Coupled to one of the transverse wheels 34.

  The traversing wheel 34 has predetermined positions on each outer side surface of the cross beam 32 at a position of the drive shaft 35 of the drive motor 33, a position in the vicinity of the other vertical beam 31, and two positions near the center of the space S2. It is arrange | positioned in four places with the space | interval of. A conveyor belt 36 circulates around each traversing wheel 34 and receives the driving force from the drive motor 33 to transport the pallet 2 in contact with the traversing wheel 34 in the traversing direction. Note that auxiliary traverse wheels 37 for making the pallet 2 more smoothly transported are provided between the adjacent traverse transport devices 14 (see FIG. 5).

  The elevating device 15 is a device for preventing the longitudinal conveying device 12 and the transverse conveying device 14 from interfering with each other. FIG. 3 is a diagram illustrating an example of the lifting device. The lifting device 15 is configured such that the components on the side of the frame 11 and the components on the side of the drive frame 13 face each other, but for convenience of explanation, both are shown from the front side in FIG. The elements and the components on the drive frame 13 side are shown separately in the vertical direction.

  As shown in the figure, the lifting device 15 includes a drive motor 41 provided at a substantially central portion of the cross beam 22 in the underframe 11, a drive sprocket 43 provided on a drive shaft 42 of the drive motor 41, and a drive sprocket 43. A driven sprocket (second driven sprocket) 44 provided adjacent to the horizontal beam 22 and a drive chain 45 that circulates between the drive sprocket 43 and the driven sprocket 44 by driving of the drive motor 41. The mounting position of the drive motor 41 is variable with respect to the longitudinal direction of the cross beam 22, and thereby the tension of the drive chain 45 can be adjusted.

  The lifting device 15 includes a suspension chain fixing portion 46 provided at the end of the cross beam 22 and a suspension chain 47 having one end fixed to the suspension chain fixing portion 46 and the other end engaged with the drive sprocket 43 side. And a driven sprocket (first driven sprocket) 48 provided on each of the frame 11 and the drive frame 13 and over which an intermediate portion of the suspension chain 47 is stretched.

  A total of four driven sprockets 48 are provided in the longitudinal direction of the horizontal beams 22 and 32, one pair near the front surface side of the horizontal beam 22 in the underframe 11 and one pair near the back surface side of the horizontal beam 32 in the drive frame 13. Yes. With respect to these driven sprockets 48, the suspension chains 47 are alternately looped over an upper portion of the driven sprocket 48 on the frame 11 side and a lower portion of the driven sprocket 48 on the drive frame 13 side. The other end side of the suspension chain 47 is engaged with the upper portion of the drive chain 45 by the engagement member 49, and is engaged with the drive sprocket 43 via the drive chain 45. As described above, the driven sprocket 48 is provided on the base frame 11 on the fixed side and the drive frame 13 on the driving side, so that the suspension chain 47 and the driven sprocket 48 constitute a plurality of moving pulleys.

  The driven sprocket 48 is arranged so that the cutting edge is shortened as much as possible and does not interfere even if the adjacent driven sprockets 48, 48 are arranged side by side. Further, the distance between the driven sprockets 48 and 48 is adjusted, and the angle of the suspension chain 47 spanned between the driven sprockets 48 and 48 and between the driven sprocket 48 and the suspension chain fixing portion 46 is slightly inclined with respect to the vertical direction. It is preferable to make it. In this way, it is possible to prevent interference between the driven sprockets 48 and 48 and the suspension chain 47 in the vicinity of the upper limit position of the drive frame 13, and to suppress the tension applied to the suspension chain 47.

  In the present embodiment, another set of the suspension chain fixing portion 46, the suspension chain 47, and the driven sprocket 48 is provided so as to be symmetric with respect to the drive chain 45. The other end side of the suspension chain 47 is engaged with the position adjusting sprocket 50, and is engaged with the lower end portion of the drive chain 45 by the engagement member 49 so as to be opposed to the other end side of the other suspension chain 47. The drive sprocket 43 is engaged via the drive chain 45.

  With such a configuration of the lifting device 15, as shown in FIG. 4, when the drive frame 13 is lowered, the drive frame 13 has a height equal to or less than that of the frame 11, The longitudinal wheels 24 protrude from the transverse wheels 34 on the drive frame 13 side. On the other hand, when the drive chain 45 is rotated clockwise by the drive motor 41, the drive frame 13 is raised with respect to the base frame 11 by the suspension chain 47 as shown in FIG. Will protrude from the longitudinal wheels 24 on the underframe 11 side.

  6-8 is a figure which shows operation | movement of the mechanical parking apparatus 1. FIG. As shown in FIG. 6, when the vehicle is in the retracted state or when the pallet 2 is transported in the longitudinal direction, the drive frame 13 is lowered, and the longitudinal wheels 24 are in contact with the back surface of the pallet 2. On the other hand, the traversing wheel 34 is retracted below the pallet 2.

  Further, when the pallet 2 is switched from vertical to horizontal, as shown in FIG. 7, the drive frame 13 is raised by the lifting device 15 and the horizontal wheel 34 is in contact with the back surface of the pallet 2, while the vertical wheel 24 is It will be in the state where it retracted below the pallet 2. By driving the transverse wheel 34 in this state, the pallet 2 is conveyed in the transverse direction without interfering with the longitudinal wheel 24 as shown in FIG.

  As described above, in the mechanical parking device 1, in the lifting device 15 that lifts and lowers the drive frame 13 with respect to the frame 11, the suspension chain 47 and the driven sprocket 48 provided on the frame 11 and the drive frame 13, respectively. Functions as a moving pulley. Therefore, the chain tension of the lifting device 15 can be reduced, and the size of the suspension chain 47 can be further reduced. By reducing the size of the suspension chain 47, it is possible to use a sprocket having a small outer diameter, to reduce the size of the fixing mechanism on one end side of the suspension chain 47, and to eliminate the reduction mechanism, while allowing the drive shaft 42 of the drive motor 41 to be over-permissible. By setting the use conditions under the hang load, a direct mount structure in which the drive sprocket 43 is directly provided on the drive shaft 42 of the drive motor 41 can be realized. Thereby, thickness reduction and simplification of an apparatus are realizable.

  The lifting device 15 further includes a driven sprocket 44 provided on the frame 11 adjacent to the drive sprocket 43 and a drive chain 45 that circulates between the drive sprocket 43 and the driven sprocket 44. 47 is engaged with the drive sprocket 43 via the drive chain 45. Thereby, the raising / lowering stroke by the suspension chain 47 is fully securable.

  Further, the lifting device 15 further includes one set of a driven sprocket 48 and a suspension chain 47 so as to be symmetric with respect to the drive chain 45, and the other end side of one suspension chain 47 is connected to the other suspension chain 47. It is engaged with the drive sprocket 43 via the drive chain 45 so as to be relative to the other end side. Thereby, since both sides of the drive frame 13 are supported by the suspension chain 47, the drive frame 13 can be moved up and down more stably. Further, since the drive motor 41 required for driving the suspension chains 47 and 47 can be made common, it is possible to avoid complication of the apparatus and to save space.

  DESCRIPTION OF SYMBOLS 1 ... Mechanical parking apparatus, 2 ... Pallet, 11 ... Underframe, 12 ... Longitudinal conveyance apparatus, 13 ... Drive frame, 14 ... Traverse conveyance apparatus, 15 ... Lifting apparatus, 41 ... Drive motor, 42 ... Drive shaft, 43 ... drive sprocket, 44 ... driven sprocket (second driven sprocket), 45 ... drive chain, 47 ... suspension chain, 48 ... driven sprocket (first driven sprocket).

Claims (3)

A mechanical parking device having a pallet on which a vehicle is placed,
A frame provided with a longitudinal conveying device for conveying the pallet in the longitudinal direction;
A drive frame provided in a traverse conveying device arranged in the underframe and configured to convey the pallet in the traversing direction;
A lifting device that lifts and lowers the drive frame with respect to the frame,
The lifting device is
A drive motor provided on the underframe;
A drive sprocket provided on the drive shaft of the drive motor;
A suspension chain having one end fixed to the frame and the other end engaged with the drive sprocket;
A first driven sprocket provided on each of the underframe and the drive frame, on which the suspension chain is stretched;
A mechanical parking device characterized by comprising: The lifting device is
A second driven sprocket provided on the underframe adjacent to the drive sprocket;
A drive chain that circulates between the drive sprocket and the second driven sprocket;
2. The mechanical parking apparatus according to claim 1, wherein the suspension chain is engaged with the drive sprocket via the drive chain. The lifting device further includes one set of the first driven sprocket and the suspension chain so as to be symmetrical across the drive chain,
3. The machine according to claim 2, wherein the other end side of one suspension chain is engaged with the drive sprocket via the drive chain so as to be opposite to the other end side of the other suspension chain. Parking system.

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