JPS637664Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an elevating body control device for a two-tiered parking device, in which the elevating body constituting the two-tiered parking device always stops at predetermined positions at the upper and lower limits, and allows for easy loading and unloading of cars and horizontal parking. It is characterized by being constructed so that it does not cause any trouble.

The applicant has developed a two-tiered parking system by suspending cross beams at required intervals from the upper ends of opposing walls constituting an underground storage area, and connecting the four corners of each of the cross beams with pillars of appropriate length. An elevating body consisting of a lower pallet is provided, and a chain whose tip is fixed near each of the four corners of the lower pallet is suspended from a sprocket provided on a cross beam above each sprocket and guided to one end of the cross beam, and the chain is coaxially connected to the chain. We provided a two-stage parking device that evenly rolls up the winding sprocket using the same number of winding sprockets (Japanese Patent Application No. 37528/1983).

In the case of the two-tier parking device having the above configuration, the chains fixed near each of the four corners of the lower pallet are guided to one end of the cross beam where they do not interfere with the elevation of the elevating body.
The winding is done evenly using the same number of winding sprockets as the chains installed on the same axis.
The length of the chain fixed to the hoisting sprocket side of the lower pallet is completely different from the chain fixed to the side opposite to the hoisting sprocket of the lower pallet.

Therefore, when elongation occurs in each chain after continued use, even if the elongation rate is the same, the actual elongation will be much greater for the longer chain.

As a result, the elevating object inevitably becomes inclined when it goes up and down and when it stops, and even when it goes up, the lower pallet and the ground surface are not level, creating a level difference, which hinders the loading and unloading of cars on the lower pallet. Similarly, when the elevating body is lowered and stored, one end of the lower pallet does not touch the ground and is not stored horizontally, resulting in one end of the upper pallet protruding from the ground surface.

In order to eliminate the above drawback, a chain adjuster is provided at the end of each chain, that is, at the attachment point between each chain and the lower pallet, and is configured to adjust according to the elongation of the chain, but frequent adjustment is required. shall be.

The present invention is constructed so that even if there is an imbalance in the elongation of the chain, the elevating body, that is, the upper and lower pallets, will stop at a predetermined position, and there will be no problem with loading and unloading cars and horizontal parking. This is what I did.

First, the two-stage parking device will be explained.

The underground storage section a is constructed by appropriately excavating the ground surface b.

In other words, in the underground storage part a of the present invention, it is only necessary to erect an auxiliary column 14 inside to absorb the deflection of the beam, and if the length of the column can be adjusted and fixed, the bottom foundation concrete etc. Precise leveling is not required, the labor for installation is greatly reduced, and the accuracy of parts manufacturing is greatly reduced.

In other words, excavate approximately the length of the car and install walls c with concrete or the like on both sides with a length corresponding to the number of cars.
It is only necessary to lay a simple bottom concrete reinforced with the part that constitutes c' and supports the auxiliary column 14.

Next, the cross beams 1 and 1a are suspended at the upper ends of the opposing walls c and c' with a required gap, and both ends of the cross beams are completely fixed to the walls c and c'.

Further, between the upper cross beams 1 and 1a, there is provided an elevating body d consisting of an upper pallet 3 and a lower pallet 4, each of which is connected near its four corners by struts 2, 2a, 2b and 2c of appropriate lengths.

Next, the ends of the chains 5, 5a, 5b and 5c are fixed to approximately four corners of the lower pallet 4 constituting the elevating body d.

In the case of the embodiment shown in the drawings, a chain adjuster 6 is provided at each end of the chains 5, 5a, 5b, and 5c.
and 5c are configured so that the lengths thereof can be adjusted.

Next, chains 5, 5a, 5b, and 5c are suspended on guide sprockets 7, 7a, 7b, and 7c provided inside the upper cross beams 1 and 1a, respectively, so that they can be hoisted evenly by a motor 8.

To be more specific, between one end of the cross beams 1 and 1a,
That is, a drive shaft 9 is provided at a position that does not interfere with the elevation of the elevating body d, and a hoisting sprocket 10 is provided near both ends of the drive shaft 9, in which the chains 5, 5a, 5b, 5c suspended on the guide sprockets 7, 7a, 7b, 7c engage. , 10a, 10b and 10c
A drive sprocket 11 is fixed to a suitable position on the drive shaft 9, and the drive sprocket 1
The chain 13 is suspended between the motor 1 and the drive shaft sprocket 12 of the motor 8 provided at an appropriate position.

The motor 8 is equipped with a speed reducer and a brake, and is capable of forward and reverse rotation.

The two-level parking device having the above structure is configured such that the elevating body d is raised and lowered by a rise and fall switch, and its stop is automatically performed by upper and lower limit detection switches provided in the elevating path of the elevating body d. There is.

In the two-stage parking device having the above configuration, the chains 5 and 5b on the opposite side (hereinafter referred to as the front) are approximately twice as large as the chains 5a and 5c on the side of the hoisting sprockets 10, 10a, 10b and 10c (hereinafter referred to as the rear). It has a length.

Therefore, if each chain 5, 5a, 5b, and 5c elongates due to continued use, the elongation of the front chains 5, 5b will cause the rear chain 5 to elongate.
The height is approximately twice that of a and 5c, and the front of the elevating body d is in a lowered state.

Therefore, when the upper and lower limit detection switches of the elevating body d are provided together at the front or rear,
The following situation will occur.

In other words, if the upper limit detection switch and the lower limit detection switch are provided at the rear, the upper limit detection switch will operate in a state where the front of the lower pallet 4 is not yet level with the ground surface b and there is a difference in level when the elevator d is ascending. If the upper limit detection switch and the lower limit detection switch are installed at the front, the lower limit detection will occur when the rear of the lower pallet 4 has not yet touched the ground when descending. The switch acts to stop the lowering, and the upper pallet 3 is not stored horizontally, resulting in the rear part of the upper pallet 3 protruding from the ground surface b.

In order to eliminate the above-mentioned drawbacks, the present invention provides a winding sprocket 10,
A lower limit detection switch 15 is provided near the ground surface b at the side ends of 10a, 10b and 10c, and is activated when it detects that the upper pallet 3 has descended to a predetermined position, and stops the descent of the elevating body d. An upper limit detection switch 16 is provided near the ground surface b at the end opposite to the hoisting sprockets 10, 10a, 10b, and 10c, which operates upon detecting that the lower pallet 4 has risen to a predetermined position and stops the elevation of the elevating body d. It was established.

FIG. 4 shows an installation diagram of the upper limit detection switch 16 provided at the front, and FIG. 5 shows a side view thereof. That is, the upper limit detection switch 16
is attached to a mounting member 18 attached to the cross beam 1, and has a switch lever 16'. In the figure, 2' is the elevating body d
A plate provided at the side, specifically at the lower end of the support column 2, comes into contact with the switch lever 16' when the elevating body d rises.

FIG. 6 shows an installation diagram of the lower limit detection switch 15 provided at the rear, and FIG. 7 shows a side view thereof.

That is, the lower limit detection switch 15 is attached to a mounting member 17 attached to the cross beam 1, and has a switch lever 15'.

Next, when the elevating body d rises, the plate 2' provided at the lower end of the column 2 comes into contact with the lever 16' of the upper limit detection switch, the upper limit detection switch 16 is activated, the motor 8 is stopped, and the elevating body d is raised. The ascent of body d is stopped. Therefore, the upper limit detection switch 16 may be installed in advance so that the upper end of the front wall c and the lower pallet 4 are at the same height.

Regarding the mounting position of the upper limit detection switch 16 in the front-back direction, closer to the front end the error in the stop position due to the difference in chain expansion will be reduced. A similar effect exists nearby.

Next, when the elevating body d descends, the lower limit detection switch lever 15' comes into contact with the upper pallet 3, the lower limit detection switch 15 is activated, the motor 8 is stopped, and the lowering of the elevating body d is stopped. Therefore, the lower limit detection switch 15 may be installed so that the rear of the lower pallet 4 lands.

Further, the lower limit detection switch 15 may be positioned in the front-rear direction as long as it is behind the rear chains 5a and 5c.

Therefore, even if the front chains 5, 5b and the rear chains 5a, 5c have different elongations, the elevating body d can be stopped at an ideal position.

In other words, the upper limit detection switch 16 at the front prevents the lifting body d from being stopped in a state where there is a difference in level between the front of the lower pallet 4 and the ground surface b when the elevator d rises, and the lower limit detection switch 15 at the rear prevents the lower pallet 4 from moving upward. This has the effect of being stored horizontally at the planned position where the robot will completely touch the ground.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway perspective view of the main parts of the two-stage parking device, Fig. 2 is a side view showing the elevated state of the elevating body, and Fig. 3 is the elevated state of the elevating body. FIG. 4 is a side view showing the lower limit detection switch, FIG. 5 is a side view thereof, FIG. 6 is a side view of the lower limit detection switch, and FIG. 7 is a side view thereof. 1, 1a... cross beam, 2, 2a, 2b, 2c...
Pillar, 3...Upper pallet, 4...Lower pallet, 5, 5a, 5b, 5c...Chain, 7,7
a, 7b, 7c...Guide sprocket, 8...
Motor, 9... Drive shaft, 10, 10a,
10b, 10c... winding sprocket, 11...
...Drive sprocket, 15...Lower limit detection switch, 16...Upper limit detection switch, a...Underground storage, b...Ground surface, c, c'...Wall, d...Elevating object.

Claims (1)

[Scope of utility model registration request] Cross beams are suspended and fixed at the upper ends of the opposing walls constituting the underground storage section at required intervals, and an elevating body consisting of upper and lower pallets is provided between the cross beams, each of which is connected near the four corners with supports of appropriate lengths, A two-tiered parking device in which a chain whose tips are fixed near each of the four corners of the lower pallet is suspended from a sprocket installed on a cross beam above each chain, guided to one end of the cross beam, and evenly rolled up using a winding sprocket installed on the same axis. A lower limit detection switch is provided near the ground surface at the end of the hoisting sprocket, which is activated when it detects that the upper pallet has descended to a predetermined position, and stops the descent of the elevating body. An elevating object control device for a two-tier parking system, characterized in that an upper limit detection switch is provided near the ground surface to detect when a lower pallet has risen to a predetermined position and is activated to stop the elevating object from rising.