JPH08231196A - Lifting device - Google Patents

Abstract

PURPOSE: To provide a lifting device which has a structure most suited to size reduction without need for a counter weight and can save an occupied space. CONSTITUTION: When respective circular chains 12a, 13a are turned by operating a motor 3, respective hanging chains 12b, 13b are drawn out from a cage-shaped frame 4 and drawn into the cage-shaped frame 4. As a result, a vehicle loading pallet 14 lifts up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for lifting a heavy object.

[0002]

2. Description of the Related Art As a lifting device of this type, for example, FIG.
There is one for multistory parking lots as shown in 0. This device is used to lift the vehicle from the ground to the upper floors or to lower the vehicle.

In FIG. 10, two lifting chains 102 are connected to the right edge of a vehicle loading pallet 101. The lifting chains 102 are hooked on the drive sprockets 105 via the driven sprockets 103 and the driven sprockets 104, and hang down from the drive sprockets 105. At the lower ends of these lifting chains 102, the counterweight 10
6 are connected. Similarly, the vehicle loading pallet 10
Each lifting chain 107 is also connected to the left edge of 1. These elevating chains 107 are hung on the drive sprockets 110 via the driven sprockets 108 and the driven sprockets 109, hang down from the drive sprockets 110, and are connected to a counter weight (not shown).

Each drive sprocket 105 and each drive sprocket 110 is fixed to both sides of a common drive shaft 111. The drive shaft 111 is supported at both ends thereof, and the drive shaft 111 is rotated by a motor 112 having a reduction gear.

Here, the motor 112 is operated to drive each drive sprocket 105 and each drive sprocket 110.
When it is rotated in one direction, the lifting chains 102 and the lifting chains 107 are pulled toward the drive shaft 111, and the vehicle loading pallet 101 is lifted and the counterweights are lowered.

When the motor 112 is rotated in the reverse direction to rotate the drive sprockets 105 and 110 in the opposite directions,
Along with this, the lifting chains 102, 107 are pulled out, the vehicle loading pallet 101 is lowered, and
Each counterweight increases.

[0007]

However, in the above-mentioned conventional apparatus, each counterweight is lifted up and down behind the vehicle loading pallet, and a space for these weights is required. For this reason, it was necessary to have a sufficient margin in the occupied area of the multi-storey car park.

Therefore, an object of the present invention is to provide an elevating device which does not require a counterweight, has a structure suitable for downsizing, and requires a small occupied space.

[0009]

In order to solve the above problems, in the lifting device of the present invention, a pair of driving sprockets are horizontally arranged side by side, and an annular chain is bridged over these driving sprockets. , Connecting an elevating chain to this annular chain, hanging this elevating chain on a hanging sprocket and hanging it, connecting an elevating object to the lower end of this elevating chain, and driving at least one of the driving sprockets. .

[0010]

According to the present invention, the elevating chain is connected to the annular chain, the elevating chain hangs on the hanging sprocket and hangs down, and the elevating object is connected to the lower end of the elevating chain. When one of the drive sprockets is driven to rotate the annular chain in one direction, the elevating chain is drawn toward the annular chain, and the elevating object ascends together with the lower end of the elevating chain. When the annular chain is rotated in the other direction, the lifting chain is pulled out, and the lifting object is lowered along with the lower end of the lifting chain.

[0011]

1 and 2 show an embodiment of the present invention. 1 is a perspective view and FIG. 2 is a side view.

In this embodiment, the first lifting device 1 and the second lifting device 1
Two lifting devices 2 are used as one set. These devices 1,
2 has substantially the same configuration, except that the brake and the motor 3 with a reduction gear are provided only in the first lifting device 1 and not in the second lifting device 2.

Each of these devices 1 and 2 has a housing frame 4. The housing frame 4 includes the first drive sprockets 5 and 5, the second drive sprockets 6 and 6, the first suspension sprocket 7, the second suspension sprockets 8 and 8, and the folding sprockets. 9, 9, each sprocket for weight 10, 10, each sprocket for tension 1
1, 11 are pivotally supported.

As is apparent from FIG. 3, these sprockets are axially supported by stacking two sheets, and the two chains 12 and 13 are bridged in parallel on these sprockets.

The lower end of one chain 12 is connected to the left side of the vehicle loading pallet 14 in FIG. 2, and the folding sprocket 9 is interposed via the first suspending sprocket 7 and the second suspending sprocket 8. Has reached.
The lower end of the other chain 13 is connected to the right side of the vehicle loading pallet 14, and reaches the folding sprocket 9 via the second hanging sprocket 8. These chains 12 and 13 are guided from the respective folding sprockets 9 and 9 to the respective second driving sprockets 6 and 6 through the respective first driving sprockets 5 and 5, and the respective first driving sprockets 5 and 5. 5 and each of the second drive sprockets 6 and 6. Furthermore, these chains 12 and 13 are provided with folding sprocket wheels 9 and 9 respectively.
The chains 12 and 13 are hooked on the respective weight sprockets 10 and 10, and one ends of these chains 12 and 13 are connected to the respective coupling fittings 15 and 15. These connecting fittings 15,
15 is fixed in the middle of each chain 12, 13.

FIG. 4 shows the connecting fitting 15 in an enlarged manner. This connecting fitting 15 is obtained by deforming a side plate 16 of one piece of a chain, providing a projection piece 16a on the side plate 16, connecting an L-shaped fitting 17 to the projection piece 16a, and passing a bolt 18 through the L-shaped fitting 17. , This bolt 18
A pin 19 at one end of the chain is passed through the head portion 18a of the above, and this bolt 19 is connected to one end of the chain.

Since one end of each chain 12, 13 is connected in the middle of each chain 12, 13 by each connecting fitting 15, 15, these chains 12, 13 are
From the respective first driving sprockets 5 and 5 and the second driving sprockets 6 and 6, the respective annular portions (hereinafter referred to as the respective annular chains 12a and 13a) and the respective coupling fittings 15 and 15 from the vehicle. Each hanging part reaching the loading pallet 14 (hereinafter, each hanging chain 1
2b, 13b).

Tension weights 20 are suspended from the weight sprockets 10, 10. This tension weight 20 is formed by each annular chain 12a,
Tension is applied to 13a, and these annular chains serve to make it difficult to separate from each sprocket.

The second drive sprockets 6 and 6 of the first and second lifting devices 1 and 2 are fixed to both ends of the drive shaft 21. On the first lifting device 1 side, one end of this drive shaft 21 is connected to the brake and the output shaft of the motor 3 with a reduction gear. Operate this motor 3 to drive this drive shaft 2
When 1 is rotated, the second drive sprockets 6 and 6 are rotated in both the first and second lifting devices 1 and 2,
Along with this, the annular chains 12b and 13b rotate. In this way, the drive shaft 21 is connected to the first and second lifting devices 1,
Since they are shared by the two, the annular chains of the first elevating device 1 and the annular chains of the second elevating device 2 rotate in synchronization with each other.

In the state shown in FIGS. 1 and 2, the connecting fittings 15 and 15 are moved to the vicinity of the first drive sprockets 5 and 5, respectively, and the hanging chains 12b and 13b.
Is drawn inside the housing frame 4, and the vehicle loading pallet 1
4 has risen to the vicinity of the housing frame 4.

By operating the motor 3, each annular chain 1
When the connecting metal fittings 15 and 15 are moved toward the second drive sprockets 6 and 6 by rotating 2a and 13a, the hanging chains 12b and 13b are pulled out from the housing frame 4. Go. Along with this, the vehicle loading pallet 14 descends.

When the vehicle loading pallet 14 is lowered to a predetermined position, the lower limit switch 22 is turned on, and in response thereto, the motor 3 is stopped.

The lower limit switch 22 is shown in FIGS. 5 and 6. The lower limit switch 22 includes a swing pin 23, and when the swing pin 23 swings in the direction of arrow A, the lower limit switch 22 is turned on. On the other hand, the side plate 24 of one piece of the annular chain 13a is deformed, the contact pin 25 is attached to the side plate 24, and the contact pin 25 is provided to project in the horizontal direction.

When each of the annular chains 12a and 13a is rotated, the contact pin 25 of one piece of the annular chain 13a moves, and when the vehicle loading pallet 14 descends to a predetermined position, the contact pin 25 is set to the lower limit switch 22. Pin 2
The lower limit switch 22 is turned on by touching 3. As a result, the vehicle loading pallet 14 stops at a predetermined position.

Now, such a set of two units, first and second
The lifting devices 1 and 2 (hereinafter referred to as lifting unit 31) are
For example, it is applied to a parking lot as shown in FIGS. 7, 8 and 9. 7 is a plan view, FIG. 8 is a front view seen in the area I-I of FIG. 7, and FIG. 9 is a side view seen in the area II-II of FIG.

In this parking lot, as shown in FIG. 7, one parking area 33 is defined between two pillars 32. In this parking area 33, seven cars 34,
35 can be parked. Four of these cars 34 are in direct contact with the ground. Further, the three automobiles 35 are placed on the three moving pallets 36.

Two axles 37 are pivotally supported on the bottom of the moving pallet 36, as shown in FIGS. 8 and 9. Wheels 38 are fixed to both ends of these axles 37. Two rails 39 are laid on the ground, and each wheel 38 of the moving pallet 36 is placed on the two rails 39. In addition, each axle 37 of the moving pallet 36
A drive pulley 41 is fixed to one of the two, and a traveling motor 42 is disposed near the upper side of the drive pulley 41.
And a chain is spanned between the pulleys 43 of the traveling motor 42.

When the traveling motor 42 is operated, one axle 37 is driven, the other axle 37 is driven, each wheel 38 is rotated, and the moving pallet 36 is moved along each rail 39. .

Above each moving pallet 36, 4
The lifting units 31 of the stands are arranged side by side on the ceiling. In order to fix these lifting units 31 to the ceiling, the first and second lifting devices 1 and 2 of the lifting unit 31 are fixed to the beams 46 on the ceiling by the mounting brackets 45. The vehicle loading pallet 14 of these lifting units 31 has four
One car 47 is installed.

In the place where each rail 39 is laid,
Since the three moving pallets 36 are arranged in the parking spaces of the four cars, one parking space is available. On the other hand, since four lifting units 31 are arranged above this place, there is no empty space on the ceiling side.

This is because by moving the moving pallets 36 on the ground side, it is possible to secure a vacant parking space below any of the elevating units 31 on the ceiling side.
This is because it is always possible to move the automobile 47 up and down and take it in and out, regardless of which of the elevator units 31 is used.

Here, in the parking area 33, on the ground side,
7 cars 34, 35, 4 cars 4 on the ceiling side
7, a total of 11 cars can be parked. On the other hand, when the space on the ceiling is not used, even if four cars are parked in the place where each rail 39 is laid, only eight cars in total can be parked.

Further, each lifting device 1 of the lifting unit 31
No. 2 does not have a counterweight, as is clear from FIGS. Therefore, when compared to conventional devices,
The installation space for the lifting unit 31 is obviously narrow. As a result, even if the vehicle is above the track 48,
It is possible to install each elevating unit 31 as shown by the chain line. That is, by effectively utilizing the space on the ceiling side, it is possible to significantly exceed the number of parked vehicles up to now.

When each of the ceiling-side lifting units 31 is used, it is preferable to select each vehicle that has fewer opportunities to move in and out than the ground side and mount these vehicles in each lifting unit 31. For example, in a large store or company parking lot, these lifting units 3
1 is dedicated to employees and employees 'cars, and the ground side is dedicated to customers' cars.

On the other hand, each lifting device 1 of the lifting unit 31
2, the annular chain 12 is provided between the first drive sprockets 5 and 5 and the second drive sprockets 6 and 6.
a and 13a are horizontally and slenderly extended. With such a structure, the annular chains 12a and 13a are not bulky in the height direction, and the housing frame 4 of the lifting devices 1 and 2 can be lowered.

As described above, the absence of the counterweight and the low height of the housing frame 4 enable downsizing of the elevating unit 31 and reduction of the installation space of the elevating unit 31. Moreover, since the pillar for the lifting unit is unnecessary, the lifting unit 31 can be used even in the existing parking lot.
Can be installed easily, and parking spaces can be easily added.

In this embodiment, tension is applied to the annular chain by the tension weight, but tension may be applied by various springs. Further, the chain connection method, the number of chains, the arrangement of each sprocket, the arrangement of the motors, etc. may be set appropriately. Further, in order to synchronize the respective annular chains of the first elevating device 1 with the respective annular chains of the second elevating device 2, the drive shaft 21 is shared, but the driving of the first and second elevating devices 1, 2 It is also possible to divide the shaft and provide each of these devices with driving motors so as to operate these motors synchronously.

[0038]

As described above, in the lifting device of the present invention, the lifting chain is connected to the annular chain, the lifting chain is hung on the hanging sprocket and hung down, and the lifting chain is lifted by rotating the annular chain. I am letting you. With such a structure, a counterweight is not required, size reduction can be achieved, and installation in a small space becomes possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an elevating unit according to an embodiment of the present invention.

FIG. 2 is a side view showing the lifting unit of FIG.

3 is an enlarged view of each sprocket of the lifting unit of FIG.

FIG. 4 is an enlarged view of a connecting fitting of the lifting unit of FIG.

5 is an enlarged front view of the lower limit switch of the lifting unit of FIG.

FIG. 6 is a side view showing the lower limit switch of FIG.

7 is a plan view showing a parking lot to which the lifting unit of FIG. 1 is applied.

FIG. 8 is a front view seen in the area I-I of FIG.

FIG. 9 is a side view taken along the line II-II in FIG.

FIG. 10 is a perspective view illustrating a conventional device.

[Explanation of symbols]

 1 1st lifting device 2 2nd lifting device 3 Motor 4 Housing frame 5,6,7,8,9,10,11 Sprocket 12,13 Chain 14 Vehicle loading pallet 15 Coupling metal fitting 20 Tension weight 21 Drive shaft

Claims (5)

[Claims] 1. A pair of drive sprockets are arranged side by side in a horizontal direction, an annular chain is bridged over these drive sprockets, and an elevating chain is connected to the annular chain to suspend the elevating chain. An elevating device for hanging at least one of the driving sprockets and connecting the elevating object to the lower end of the elevating chain. 2. The elevating device according to claim 1, further comprising a tension applying means for applying a tension to the annular chain hung on each driving sprocket. 3. The elevating device according to claim 1 is used as one set, and the elevating devices are arranged side by side so that the annular chains of these elevating devices face each other. And a lower end of an elevating chain of the other elevating device are connected to respective opposite edges of the loading pallet. 4. The lifting device according to claim 3, wherein the annular chains of the lifting devices are rotated in synchronization with each other. 5. The lifting device according to claim 3, wherein each lifting device is fixed to a ceiling of a building.