JP2014177818A - Chain oscillation device, carrier device, and multistory parking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase chain storage efficiency of a chain storage portion.SOLUTION: A chain oscillation device is provided in a carrier device having: a chain connected in one end of a pallet; a drive sprocket; and a chain storage portion storing other end side of the chain. The chain oscillation device includes: a fulcrum part relatively fixed to the chain storage portion; and an oscillation part oscillating at least in a horizontal direction relative to the fulcrum part when the oscillation part contacts with the chain on the lower side of the drive sprocket and the chain moves downward according to a rising of the pallet.

Description

  The present invention relates to a chain swinging device and a conveying device capable of raising and lowering a pallet. In particular, the present invention relates to a three-dimensional parking apparatus in which a pallet on which an automobile is placed can move up and down.

  2. Description of the Related Art Conventionally, a transport apparatus is provided in which two or more transport object installation spaces are provided above and below, and a pallet on which a transport object is placed can be moved up and down in order to transport the transport object to each transport object installation space. . Typically, as a parking device for parking a car, two or more parking spaces are provided at the top and bottom, and a pallet on which the car is placed is provided so that it can be moved up and down in order to load and unload the car with respect to each parking space. A three-dimensional parking apparatus is provided.

  This type of transport device includes a drive sprocket that rotates in response to a drive from a drive source, and a chain that is wound around the drive sprocket and that is connected to a pallet at one end, and the chain is moved by the rotation of the sprocket. Some are configured to raise and lower the pallet. Also, in this type of multi-story parking device, a pair of left and right chains (front suspension chain) whose one end is connected to one end of the pallet (one end located on the front side of the car on the pallet), and one end is the pallet A pair of left and right chains (rear suspension chains) connected to the other end in the longitudinal direction (multi-end located on the rear side of the car on the pallet), and four drive sprockets around which each chain is wound In some cases, each drive sprocket is configured to raise and lower the pallet by moving the chain in the longitudinal direction.

  And this kind of conveying apparatus has what was provided with the chain accommodating part for accommodating the excess chain sent toward the other end side by a sprocket, when raising a pallet. The chain housing portion has a box shape that defines an internal space for housing the chain, and an excess chain that hangs down from the drive sprocket or a rotatable driven sprocket provided separately from the drive sprocket is introduced into the internal space. An upper opening is formed as shown.

  By the way, when the chain accommodating part accommodates the chain, the chain bends in an unspecified direction and piles up randomly, the chain of the expected length cannot be accommodated, and the chain overflows from the chain accommodating part. There is. In order to prevent such a random stacking of chains, a chain breaking means has been proposed that projects upward on the inner bottom surface of the chain housing portion (for example, Patent Document 1).

JP-A-6-136985

  FIG. 5 is a schematic diagram of a cross section of a chain housing portion including a chain in a conventional transport device. Even if the chain breaking means 2016 and the like are provided in the chain accommodating portion 2006, the chains may be stacked and accommodated while forming a portion E where no chain exists in the chain accommodating portion 2006 (hereinafter referred to as “columnarization”). Called). Therefore, in order to allow all chains to be accommodated even if columnarization occurs, it is necessary to design the capacity of the chain accommodating part to be larger than the capacity of the chain to be accommodated in the chain accommodating part. was there.

  This invention solves the above-mentioned problem, and it aims at improving the chain accommodation efficiency of a chain accommodating part.

  According to an embodiment of the present invention, a chain connected to one end of the pallet, a drive sprocket around which the chain is wound, and the pallet is lifted by rotation of the drive sprocket provided below the drive sprocket. A fulcrum portion provided in a transport device having a chain housing portion in which the other end side of the chain is sometimes housed, and fixed relative to the chain housing portion; and the chain below the drive sprocket, A chain swinging device is provided that includes a swinging portion that swings at least in the horizontal direction with respect to the fulcrum when the chain moves downward as the pallet moves up.

  In another preferred embodiment, the swinging portion may be formed by a bent elastic plate, and one end of the elastic plate may be fixed by the fulcrum portion.

  In another preferred embodiment, at least one bent vertex of the elastic plate is in contact with the chain, and the inclined portion formed on the upper side of the bent vertex is moved downward as the pallet is raised. The chain may come into contact.

  According to an embodiment of the present invention, a chain connected to one end of the pallet, a drive sprocket around which the chain is wound, and the pallet is lifted by rotation of the drive sprocket provided below the drive sprocket. There is sometimes provided a transport device including a chain housing portion in which the other end side of the chain is housed and the chain swinging device described above.

  According to an embodiment of the present invention, there is provided a parking device that includes a plurality of the above-described transport devices and on which the automobile is placed on the pallet.

  According to the present invention, the chain accommodation efficiency of the chain accommodation portion can be increased.

The schematic side view of the three-dimensional parking apparatus which concerns on one Embodiment of this invention is shown. The schematic diagram of the cross section of the chain accommodation apparatus which concerns on one Embodiment of this invention is shown. 1 is a schematic view of a chain swing device according to an embodiment of the present invention. The schematic of the chain rocking | fluctuation apparatus which concerns on the modification of this invention is shown. The schematic diagram of the cross section of the conventional chain accommodating part is shown.

<Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. However, the present invention can be implemented in many different modes and should not be construed as being limited to the description of the embodiments exemplified below.

[Configuration of parking device]
FIG. 1 shows a schematic side view of a multi-story parking apparatus according to an embodiment of the present invention. FIG. 1 is a schematic view of the parking apparatus as viewed from the side (when the surface with entry / exit is the front).

  In the parking apparatus 100, a main structure is constituted by a column 102, and a pallet 104 on which a vehicle is placed is installed in the main structure. The pallet 104 is provided so as to be moved up and down along the column 102 by an elevator 106. In the main structure, the pallet 104 is provided with an interval at which the vehicles do not interfere with each other when a plurality of vehicles are stacked in the vertical direction. As a result, the main structure formed by the columns 102 forms a parking space that is stacked in a plurality of stages in the vertical direction.

  In the parking apparatus 100 in which the main structure forms a parking space that is stacked in a plurality of stages in the vertical direction, and stores and parks the vehicle in three dimensions, the pallet 104 moves up and down, so that the target pallet 104 is placed at the entrance / exit Move to and remove the vehicle. There are several methods for moving the target pallet 104 to the entrance / exit, for example, a method of sinking the lower pallet 104 into the underground pit in order to exit the vehicle parked on the upper pallet 104, A system in which the lower pallet 104 is slid in the vehicle body lateral direction (the depth direction in FIG. 1) and the upper pallet 104 is lowered, or a combination of these is employed.

  In the example shown in FIG. 1, the aspect by which parking space P1, P2, P3, P4 is provided toward the upper floor from the 1st floor is shown. The pallets 104 of the parking spaces P2, P3, and P4 are provided so as to be lifted and lowered.

  The parking device 100 includes elevators 106-2, 106-3, and 106-4 (hereinafter referred to as the elevator 106 when not distinguished from each other) in the parking spaces P2, P3, and P4. The elevator 106 is driven by a drive sprocket 120 that rotates by receiving a drive from a drive source (not shown) such as an electric motor, and one end of the elevator 106 is connected to the pallet 104 via a rotatable driven sprocket 124. A chain 128 (roller chain in which a plurality of link plates are pin-coupled) 126 (front suspension chain) and a drive sprocket 122 (not shown) and one end connected to the pallet 104 (rear suspension chain) There is a lower chain). The driving sprockets 120 and 122, the driven sprocket 124, and the chains 126 and 128 are similarly installed on the opposite side of the vehicle (the back side in the drawing in FIG. 1). The pallet 104 can be moved up and down by rotating the drive plots 120 and 122.

  As described above, four drive plots are installed per pallet 104. These drive proskets may have different rotation axes, but in this embodiment, all the drive sprockets are attached to a common shaft body so as to rotate by driving from a common drive source. The rotation axis is concentric.

  One end of the chain 126 is connected to the pallet 104, and a load is applied to a portion between the connecting portion 1041 of the pallet 104 and the drive sprocket 120. On the other hand, the other end side of the chain 126, that is, the side opposite to the connecting portion 1041 of the pallet 104 with respect to the drive sprocket 120 is not loaded and is suspended from the drive sprocket 120. This part of the chain is hereinafter referred to as “surplus chain”.

  When the drive sprockets 120, 122 are rotated to raise the pallet 104, the surplus chain increases. In order to sequentially accommodate the surplus chains, chain accommodating portions 206-2, 206-3, and 206-4 are provided corresponding to the elevators 106-2, 106-3, and 106-4.

[Configuration of chain swing device]
FIG. 2 shows a schematic view of a chain accommodation device 200 according to an embodiment of the present invention. FIG. 2 is a schematic view of the chain accommodation device 200 as viewed from the side (same direction as FIG. 1).

  The chain housing device 200 includes a chain housing portion 206 and a hook portion 208. Here, one chain accommodating device 200 according to an embodiment of the present invention is installed for the drive sprockets 120 and 122. Thus, the chain accommodation apparatus 200 may be installed for each of a plurality of drive sprockets, or may be installed for each drive sprocket. Hereinafter, the chain accommodation device 200 will be described with respect to accommodation of the chain 126, but the same applies to the chain 128.

  The chain accommodating portion 206 is a box shape having an opening on the upper side, and allows passage from the upper portion of the chain 126 that hangs down. The chain 126 is fixed to the hook portion 208, and the chain 126 depending from the drive sprocket 120 is accommodated in the chain accommodating portion 206.

  Further, the chain housing device 200 includes a fulcrum portion 204 fixed relative to the chain housing portion 206 and a swinging portion that swings the chain 126 moving downward at least in the horizontal direction H with respect to the fulcrum portion 204. A chain swinging device 20 is provided.

[Configuration of chain swing device]
FIG. 3 shows a schematic diagram of a chain swing device 20 according to an embodiment of the present invention. 3A is a side view of the chain swing device 20, and FIGS. 3B, 3C, and 3D show the chain swing device 20 of FIG. 3A in the B, C, and D directions, respectively. FIG. The chain swing device 20 includes a swing portion 202 and an opening 204H. The opening 204H is a hole through which the bolt penetrates when the chain swinging device 20 is attached to the chain housing portion 206 using a bolt and a nut. Therefore, the opening 204 </ b> H corresponds to the fulcrum part 204 described above in a state where the chain swing device 20 is attached to the chain housing part 206.

  The swing part 202 is formed of a bent elastic plate, and has an opening 204H on one end side. The swinging portion 202 may be formed of any material as long as it has elasticity, but may be formed of, for example, a spring steel material or a synthetic resin.

  For convenience of explanation in FIG. 3, the bent portion of the swinging portion 202 is referred to as a bent vertex. Further, of the swinging portion 202, the return portion 212, the inclined portion 214, and the branching portion 216 from the distal end portion 211 on the other end side (the end portion side opposite to the opening portion 204H) as a boundary. And In particular, the bending apex between the inclined portion 214 and the return portion 212 is referred to as a contact portion 210.

  In the branching part 216, two parts of the swinging part 202 a provided corresponding to the chain 126 and the swinging part 202 b provided corresponding to the chain 128 in the middle from the opening part 204 H side to the tip end part 211 side. Branch to Therefore, the tip portion 211, the return portion 212, and the inclined portion 214 are provided corresponding to the chain 126 and the chain 128, respectively.

  The contact portion 210 is one of a plurality of bent vertices, and contacts the chain 126 (excess chain) on the lower side of the drive sprocket 120 in a state where the chain swing device 20 is attached to the chain housing portion 206. The inclined portion 214 is an inclined portion formed above the contact portion 210, and comes into contact with the chain 126 when the chain 126 inside the chain housing portion 206 moves downward as the pallet 104 rises. The load on the contact portion 210 and the inclined portion 214 changes as the roller portion of the chain 126 passes. The swinging portion 202a swings in the horizontal direction H due to the change in the load of the contact portion 210 and the elastic force of the swinging portion 202a. Along with this, the chain 126 inside the chain housing portion 206 also swings in the horizontal direction H. The return portion 212 can smoothly contact the swinging portion 202a and the chain 126 when the chain 126 moves upward so that an unreasonable force is not applied to the swinging portion 202a.

  When such a chain swing device 20 is attached to the chain housing portion 206, when the chain 126 moves downward, the chain 126 swings in the horizontal direction H in the main chain portion 206 as shown in FIG. To do. In this way, by causing the chain 126 accommodated in the chain accommodating portion 206 to swing in the horizontal direction H, the chain 126 moving downward is attached to the swinging device 20 on the inner wall of the chain accommodating portion 206. Columnarity can be prevented by applying a force that spreads to the inner wall side and the opposite side.

<Modification>
As mentioned above, although embodiment of this invention was described, this invention can be implemented in various aspects as follows.

[Modification 1]
As shown in FIG. 3, the chain swing device 20 is formed of an elastic plate that is bent and bifurcated in the middle, but the shape of the chain swing device 20 according to the present invention is limited to this. It is not a thing. For example, branching is not always necessary, and the chain swinging device 20 that is independent for each chain may be used.

  Further, the chain swinging device 20 only needs to include a swinging portion that swings the chain 126 in at least the horizontal direction H. For example, an elliptical gear, an elliptical roller, a flat claw, or the like may be used. Further, the chain swing device 20 may be provided with a swing generating device that generates a horizontal swing on the chain 126 using a force applied from the outside other than the chain 126.

  FIG. 4 is a schematic view of a chain swing device according to a modification of the present invention. FIG. 4A shows a flat plate-like swinging portion 202A. The swinging portion 202A swings the chain 126 in the horizontal direction based on the relationship between the force bent by the contact portion 210A contacting the chain 126 moving downward and the returning force with the opening portion 204HA as a fulcrum. It may be a triangular flat plate-like swinging portion 202B (including a contact portion 210B and an opening portion 204HB) as shown in FIG. 4B, and a swinging portion having a branching portion as shown in FIG. It may be part 202C (including contact part 210C and opening part 204HC).

  Further, as shown in FIG. 4D, an elliptical roller-shaped swinging portion 202D that rotates around the opening 204HD by the contact of the chain 126 with the contact portion 210D may be used.

[Modification 2]
As shown in FIG. 2, the chain swinging device 20 is fixed to the chain housing portion 206 using a bolt and a nut penetrating the opening 204 </ b> H to form a fulcrum portion 204. What is necessary is just to be relatively fixed with respect to the part 206, and a fixing method and a fixing place are not limited. For example, the chain swinging device 20 may be fixed to the support column 102 of the parking device 100 using the opening 204H. Further, the chain swinging device 20 is configured to be detachable from the chain housing portion 206 by including the opening portion 204H, but may be fixed by welding or the like.

[Modification 3]
In the embodiment, the example in which the chain swing device 20 is applied to the parking device 100 that transports a vehicle such as an automobile to a pallet has been described in the embodiment. It can also be applied. That is, the chain swinging device 20 of the present invention can be applied to a general conveying device that conveys a material placed on a pallet by a chain.

DESCRIPTION OF SYMBOLS 100 ... Parking apparatus, 102 ... Support | pillar, 104 ... Pallet, 106 ... Elevator, 120 ... Drive sprocket, 124 ... Driven sprocket, 126 ... Chain, 128 ... Chain, 200 ... Chain accommodation apparatus, 20 ... Chain swing apparatus, 202 ... Oscillating part, 204 ... fulcrum part, 204H ... opening, 206 ... chain housing part, 208 ... hook part, 210 ... contact part, 211 ... tip part, 212 ... return part, 214 ... inclined part, 216 ... branch part,

Claims (5)

A chain connected to one end of the pallet, a drive sprocket around which the chain is wound, and the other end of the chain is accommodated when the pallet is lifted by rotation of the drive sprocket provided below the drive sprocket Provided in a transport device having a chain receiving portion,
A fulcrum portion fixed relative to the chain housing portion;
A swinging portion that contacts the chain on the lower side of the drive sprocket and swings at least horizontally with respect to the fulcrum when the chain moves downward as the pallet moves up. Chain swing device. The swing part is formed by a bent elastic plate,
The chain swing device according to claim 1, wherein one end of the elastic plate is fixed by the fulcrum portion.   At least one bending vertex of the elastic plate is in contact with the chain, and the chain is in contact with an inclined portion formed on the upper side of the bending vertex as the pallet is moved upward. The chain swinging device according to claim 2, A chain connected to one end of the pallet;
A drive sprocket around which the chain is wound;
A chain housing part that is provided below the drive sprocket and that accommodates the other end of the chain when the pallet is raised by rotation of the drive sprocket;
The chain swing device according to any one of claims 1 to 3,
A conveying device comprising: A plurality of transfer devices according to claim 4,
A parking apparatus, wherein an automobile is placed on the pallet.

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