JP2003120062A - Multistory parking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent impulsive sound intermittently generated by impact of a chain to an inner face of a chain detachment guide. SOLUTION: A chain guide part is composed of a chain detachment preventing guide 13 preventing detachment of the chain 10 from a drive sprocket 9 and an entanglement preventing guide 12 preventing entanglement of the chain 10 in the driving sprocket 9. An impact absorber 15 alleviating the impact of the chain 10 is provided in an inward lower part of the chain detachment preventing guide 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multistage parking apparatus having three or more parking floors.

[0002]

2. Description of the Related Art Conventionally, there has been known a multi-stage parking apparatus having a plurality of parking stages and a plurality of rows of parking spaces arranged laterally in order to effectively utilize a site used for a parking lot.
As an example of this multi-stage parking device, the number of parking stages is three or more, and the pallets on the two or more floors are driven by a chain-type lifting drive unit. A chain connected to the side of the chain, a lifting drive motor for rotating a drive sprocket around which the chain is wound, and a chain for accommodating the slack side excess part of the chain that is sent out from the drive sprocket when the pallet is raised. There is one that is composed of a reservoir and a chain guide portion that is provided in the vicinity of a portion where the chain engages with the drive sprocket and guides the chain so that the chain engages with the drive sprocket.

[0003] As related to this, Japanese Patent Laid-Open No. 6-1
No. 36985 can be mentioned.

[0004]

In the above-mentioned prior art, when the entanglement prevention guide forming the chain guide portion forcibly separates the chain, which is about to be caught in the drive sprocket, from the drive sprocket, a reaction of this separation occurs. There was a problem that the chain collided with the inner surface of the chain jump guide and an intermittent impact sound was generated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-stage parking system capable of preventing an impact sound which a chain collides with an inner surface of a chain jump guide and is intermittently generated.

[0006]

The above object is to drive a pallet on the second floor or higher by a chain type lift drive unit having a number of parking stages of the third floor or higher. A chain connected to the side of the pallet, a lifting drive motor that rotates a drive sprocket that wraps the chain, and a slack side surplus portion of the chain that is sent out from the drive sprocket and hangs when the pallet is raised. In the multi-stage parking device, the chain guide portion is configured to include a chain reservoir and a chain guide portion that is provided near a portion where the chain engages the drive sprocket and guides the chain so that the chain engages the drive sprocket. To prevent the chain from coming off the drive sprocket. A stop guide and an entrainment prevention guide that prevents the chain from being caught in the drive sprocket, and an impact absorber that reduces the impact of the chain is provided below the inside of the chain jump prevention guide. Achieved by

That is, the shock absorber absorbs the shock between the chain and the chain jump prevention guide, which occurs when the entanglement prevention guide forcibly separates the chain from the drive sprocket. As a result, the generation of impact noise is suppressed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a multistage parking apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing, in a partial cross section, a lift drive unit for an upper floor pallet of a multi-stage parking apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged side view of a chain guide unit shown in FIG. Is.

In the figure, reference numeral 1 is a support frame constructed on the ground (the lower part is omitted), and the upper part is connected by a beam frame 2. Reference numeral 3 denotes an uppermost pallet. Normally, an intermediate pallet and a lowermost pallet are provided below the uppermost pallet 3, but they are omitted in the present application. Four
Is a lifting drive motor provided on the beam frame 2. The power of the lifting drive motor is transmitted to the drive shaft 8 via the primary side sprocket 5, the drive chain 6, and the secondary side sprocket 7, and the drive sprocket 9 is rotated. It is designed to drive. A chain 10, one end of which is connected to the side portion of the uppermost pallet 3, meshes with the drive sprocket 9. Reference numeral 11 denotes a chain reservoir attached to the beam frame 2 so as to be positioned below the drive sprocket 9, and the chain 10 wound by the drive sprocket 9 is stacked and held in the chain reservoir 11.

Reference numeral 12 is an entrainment prevention guide. This entrainment prevention guide 12 rotates together with the sprocket 9 when the chain 10 separates from the meshing portion of the sprocket 9 and rotates while engaging with the sprocket 9 when the chain 10 is wound up. It is a guide that prevents the chain 10 from being caught in the lower part and forcibly separates the chain 10 from the sprocket 9. The chain jump prevention guide 13 prevents the chain 10 in the state of meshing with the sprocket 9 from floating from the meshing portion of the sprocket 10 and causing tooth jump, so that the chain passage is concentric with the tip circle of the sprocket 9 at the meshing portion. Is a structure having a shape that forms a. Reference numeral 15 denotes a shock absorber made of rubber or the like. With this shock absorber 15, the chain 10 collides with the chain jump prevention guide 13 due to a reaction generated when the entanglement prevention guide 12 forcibly separates the chain 10 from the drive sprocket 9. However, at that time, the impact sound generated is absorbed. Reference numeral 16 is a guide sprocket for the chain 10 provided on the beam frame 2.

The operation will be described. Now, when the elevation drive motor 4 is driven, the chain 10 is wound by the drive sprocket 9 and the top pallet 3 is raised. Along with this, the excess portion of the wound chain 10 is held in the chain reservoir 11. This drive sprocket 9
During the winding operation by the chain, the chain 10 passes between the chain jump prevention guide 13 and the winding prevention guide 14, but at this time, the chain 10 forcibly separated by the winding prevention guide 14 has a reaction at the time of separation. As a result, the chain pulsation prevention guide 13 pulsates and collides. However, at this time, since it hits the shock absorber 15, this shock is absorbed by the shock absorber 15 and an impact sound is not generated or suppressed.

Therefore, even if the night car is loaded or unloaded, it is possible to prevent the trouble caused by the impact noise.

In this example, only the lifting and lowering of the uppermost pallet 3 has been described, but the same structure is adopted when lifting and lowering the intermediate pallet. In this case, the lifting and lowering drive motor 4, the drive shaft 8, the chain reservoir 11, etc. Is attached to a transverse frame (not shown).

[0015]

According to the present invention, when the chain wound by the drive sprocket is forcibly separated from the sprocket by the wrap-around prevention guide, it collides with the opposing chain jump prevention guide side due to the reaction at the time of separation. The impact noise generated at that time can be prevented or suppressed, and a multi-stage parking device with a small chain drive noise can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing, in a partial cross section, a lift drive unit for an upper floor pallet of a multistage parking apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the chain guide portion of FIG.

[Explanation of symbols]

1 prop frame 7 3 Top pallet 4 Lifting drive motor 9 Drive sprocket 10 chains 11 Chain reservoir 12 Entrainment prevention guide 13 Chain jump prevention guide 15 Shock absorber

Claims (2)

[Claims] 1. A pallet on the second floor or higher, which has three or more parking stages, is driven by a chain-type lift drive unit, and the chain-type lift drive unit is connected to a side portion of the pallet. Chain, and a lifting drive motor that rotates the drive sprocket that winds this chain,
When the pallet is raised, the chain sump that accommodates the slack side excess part of the chain that is sent out from the drive sprocket and hangs down, and the chain that is provided near the chain meshing part for the drive sprocket and that meshes with the drive sprocket In a multi-stage parking apparatus configured with a chain guide portion for guiding the chain as described above, the chain guide portion is a chain jump prevention guide for preventing the chain from coming off the drive sprocket, and the chain is wound around the drive sprocket. A multi-stage parking apparatus comprising: a wrap-around prevention guide for preventing the above-mentioned movement of the chain, and an impact absorber for relieving the impact of the chain provided below the inside of the chain jump prevention guide. 2. The multi-stage parking apparatus according to claim 1, wherein the shock absorber is made of rubber.