JPS634142Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chain hoisting sprocket device, which is safe because the chain does not come off, and furthermore, it is easy to handle the hoisted chain, and it can be used for a long period of time. It is characterized by:

When lifting or lowering heavy objects using a chain, a drive sprocket that can freely rotate in forward and reverse directions is used.

However, a heavy object may apply a large force to the drive sprocket, causing the chain to rise and come off the toothed part of the drive sprocket, which is extremely dangerous.

Conventionally, measures have been taken to prevent the chain from coming off as described above, such as suspending weights from the rolled-up chain or applying tension from a spring, but these measures cannot cope with the load of heavy objects. It is necessary to prepare a weight or a spring, and furthermore, in the case of a weight, a large space is required as a descending space, and if the descending space is not available, it is difficult to use. Furthermore, in the case of a spring, the elongation of the spring changes between the rising state and the descending state, so load fluctuations had to be taken into full consideration.

The present invention eliminates the above-mentioned drawbacks, and the details thereof will be explained below with reference to the drawings.

FIGS. 1 and 2 show an underground storage type two-level parking system using the present invention. That is, it is installed so that an elevating body a consisting of an upper pallet 1 and a lower pallet 2 can be raised and lowered into an underground pit b.
The configuration is such that it can be carried out in a, 7b, and 7c.

To explain in detail, walls 4, 4a are constructed by excavating approximately the length of the car and having a length corresponding to the number of continuous walls 4, 4a made of concrete or the like on both sides, and the upper ends of the walls 4, 4a are spaced at a required interval. Yokokoi 5, 5a are suspended by opening the
Both ends thereof are fixed to the walls 4, 4a.

Next, an elevating body a consisting of an upper pallet 1 and a lower pallet 2, which are connected near the four corners by pillars 6, 6a, 6b, and 6c of appropriate lengths, is provided between the horizontal pipes 5 and 5a.

Furthermore, the lower pallet 2 constituting the elevating body a
There are winding chains 7, 7 at approximately the four corners of the
One ends of a, 7b and 7c are fixed.

In the case of the drawing embodiment, the hoisting chains 7, 7
A, 7b, and 7c are fastened via an adjuster star 8 for length adjustment without being securely fastened.

9 in the figure is a chain guide.

Next, the hoisting chains 7, 7a, 7b, and 7c are connected to guides, specifically sprockets 10, 10a, 10b, and 10, provided inside the horizontal threads 5, 5a, respectively, above the chain guide 9.
c and is configured to be able to be evenly hoisted by a motor 11.

In the case of the embodiment shown in the drawings, a drive shaft 12 is provided between one end of the horizontal shafts 5 and 5a, that is, at a position that does not interfere with the elevating body a, and is suspended from the sprockets 10, 10a, 10b and 10c at both ends thereof. Hoisting sprockets 13, 13a, 13b on which hoisting chains 7, 7a, 7b and 7c are suspended
and 13c, and further includes the drive shaft 12
A drive sprocket 14 is fixed at a proper position, and a chain 16 is suspended between the drive sprocket 14 and the drive rotating shaft 15 of the motor 11.

The motor 11 is equipped with a speed reducer, a brake, and can rotate in forward and reverse directions, and the hoisting chains 7, 7 are hoisted by hoisting sprockets 13, 13a, 13b, and 13c.
A, 7b, and 7c are configured to hang as they are between underground pits b.

The present invention is based on the above-mentioned winding sprocket 13, 13.
This relates to portions a, 13b and 13c.

The details are shown in FIG.

That is, the hoisting chain 7 (the hoisting chain 7
an idler roller 17 provided via a bearing plate 18 at the tip of a bracket 19 having an elongated hole 20 facing in the direction of the winding sprocket 13 is brought into contact with the open side of the rollers (a, 7b, and 7c).

The bracket 19 is fixed to the mounting portion 22 with a bolt 23 at the elongated hole 20 thereof.

Furthermore, the lower end portion of the bolt 23 is made to protrude below the mounting portion 22.

The mounting portion 22 is fixed to the wall 4a and has a female threaded hole 21 in advance, but the female threaded hole 21 may not be provided, but a hole may simply be provided and then tightened and fixed with a nut 25.

In addition, in the case of the drawing example, the idler roller 1
Winding chain 7 of sprocket 13
Although it is provided relatively above the release side of the hoisting sprocket 13, it may be provided below to increase the winding angle of the hoisting chain 7 and guide the hoisting chain 7 directly below the hoisting sprocket 13.

Furthermore, the tip of the hoisting chain 7 is fixed to a hook provided on the lower end protrusion of the bolt 23 so that the hanging hoisting chains 7 do not overlap irregularly. As a result, the hanging stroke of the chain 7 can be halved. In the figure, 24 is a washer.

In the present invention having the above configuration, the idler roller 17 is
The hoisting chain 7 is lightly pressed on its open side against the hoisting sprocket 13 to prevent it from coming off its teeth, and the hoisting chain 7 is
Since it rotates in accordance with the winding of the hoist chain 7, it does not interfere with the hoisting of the hoist chain 7. Furthermore, if the hoist chain 7, chain sprocket 13, or idler roller 17 is worn out, loosen the bolt 23 and check their approach. Adjustments can be made to ensure long-term safety, and furthermore, the wound chain does not overlap irregularly, making it easy to handle.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the main parts showing an example of a two-stage parking device,
The figure is a side view thereof, and FIG. 3 is a side view showing a part of the present invention in cross section. 7, 7a, 7b, 7c...Hoisting chain, 1
3, 13a, 13b, 13c... Winding sprocket, 17... Idler roller, 18... Bearing plate, 19... Bracket, 20... Long hole, 21...
...Female screw hole, 22...Mounting part, 23...Bolt.

Claims (1)

[Scope of utility model registration request] An idler roller provided at the tip of a bracket having an elongated hole facing toward the hoisting sprocket is brought into contact with the open side of the hoisting chain of the hoisting sprocket, and the bracket is fixed to the mounting portion at the elongated hole portion with a bolt. A chain hoisting sprocket device, characterized in that the lower end of the bolt protrudes below the attachment point, and the tip of the hoisting chain is fixed to the lower end protrusion.