JPH1037510A - Lifting chain driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the sure drive of a lifting chain by arranging an auxiliary sprocket as an idler between a drive side sprocket and a driven sprocket, and pressing the lifting chain wound on the drive sprocket and the driven sprocket from above by the auxiliary sprocket. SOLUTION: A drive sprocket group 61 and a driven sprocket group 63 are provided on a hoist way 4, and auxiliary sprockets 64, 642 as idlers are arranged between the sprocket groups 61, 63. Lifting chains 71, 72 are wound on the sprockets 611, 614 and the sprockets 631, 632, and pressed from above by the sprocket 641, 642 to extend the gearing range of the lifting chains 71-74 on the sprockets 611-614 and the sprockets 631, 632. Thus, the skipping on each sprocket of each lifting chain is prevented, and the sure lifting operation can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting chain drive device used for a lift of a parking device.

[0002]

2. Description of the Related Art FIG. 8 shows a basic structure of a conventional lifting chain drive device used for a lift. In FIG. 8, reference numeral 80 denotes a hoistway of the lift, which includes a drive-side sprocket group 81 and its drive motor 82 arranged in parallel on one side on the upper side, here on the front side, and also arranged in parallel on both front and rear sides. And a driven sprocket group 83 on the driven side.
4 and a total of four elevating chains 841 to 844 are hung between the sprockets 831 to 834 on the driven side,
The lifting means 841 to 844 suspend the automatic vehicle-mounted tray support means.

The drive-side sprocket group 81 includes a hoistway 8
In the front of the upper part, two pairs are formed on each of the left and right sides, and the first, second, third, and
Fourth sprockets 811, 812, 813, 814
And a fifth sprocket 815 connected to the output shaft of the drive motor 82 and having a small diameter with respect to each of the first to fourth sprockets 811 to 814, and a first and second sprocket 81.
1, 812 and third and fourth sprockets 813, 814
And the first to fourth sprockets 811
814 and a sixth sprocket 816 having a large diameter, which is composed of six sprockets as a whole. First to fourth and sixth sprockets 811 to 8
14 and 816 are connected via a drive shaft 817, and a drive chain 818 is wound between the fifth sprocket 815 and the sixth sprocket 816.

The sprocket group 83 on the driven side is
A pair of the first and second sprockets 812 and 813 are arranged in parallel on the front side of the upper part, one on each of the left and right sides thereof, and are arranged in close proximity to the second and third sprockets 812 and 813 on the driving side. Sprockets 831 and 832 and hoistway 80
A third pair is arranged on the left and right sides on the rear side of the upper portion, one pair each on the left and right sides, arranged in parallel and separated from and opposed to the first and fourth sprockets 811 and 814 on the driving side.
Fourth sprockets 833 and 834 are provided, and are composed of four sprockets as a whole. Here, the first to fourth sprockets 831 to 834 on the driven side have the same diameter as the first to fourth sprockets 811 to 814 on the driving side.

[0005] Among the four lifting chains 841 to 844, the first and second lifting chains 841 and 842 are the first and fourth sprockets 811 and 81 on the driving side, respectively.
4 and the third and fourth sprockets 833, 83 on the driven side.
4, one end of which is connected to the support means of the tray, and the other end is connected to a pair of counterweights 85. Third and fourth lifting chains 843, 8
44 is wound between the driving-side second and third sprockets 812 and 813 and the driven-side first and second sprockets 831 and 832, one end of which is connected to the tray support means. The other end is connected to a pair of counter weights 85.

Although not shown here, a total of four guide rails are erected at the four corners of the hoistway 80.
Elevating rods are arranged on these guide rails. For example, an elevating frame is used as a tray supporting means, and the elevating frame is connected to each elevating rod. Therefore, each lifting rod is connected to the four lifting chains, and the lifting frame is suspended.

As described above, the four lifting chains 841 to 844 with the tray supporting means suspended are driven by the following operation of each sprocket by the operation of the driving motor 82, and the tray supporting means is driven. Up and down. That is, the forward rotation of the drive motor 82 causes the fifth sprocket 815 to rotate in the same direction, and this is transmitted by the drive chain 818 to rotate the sixth sprocket 816 on the drive shaft 817. This sixth sprocket 81
6, the drive shaft 817 is decelerated and rotated, and the first to fourth sprockets 811 to 814 forming a pair on both sides thereof
Is rotated. Accordingly, the first and second elevating chains 841 and 842 wound around the first and fourth sprockets 811 and 814 and the third and fourth sprockets 833 and 834 on the driven side, and the driving side The third and fourth elevating chains 843 and 844 wound around the second and third sprockets 812 and 813 and the first and second sprockets 831 and 832 on the driven side respectively are trays. While lowering the support means, each counterweight 85
Pull up.

Conversely, the reverse rotation of the drive motor 82 causes the fifth sprocket 815 to rotate in the same direction, which is transmitted by the drive chain 818 to rotate the sixth sprocket 816 on the drive shaft 817. The drive shaft 817 is decelerated and rotated by the sixth sprocket 816, and the paired first to fourth sprockets 811 to 814 are rotated on both sides. Accordingly, the first and second elevating chains 841 and 842 wound around the first and fourth sprockets 811 and 814 and the third and fourth sprockets 833 and 834 on the driven side, and the driving side And fourth elevating chains 843, 84 wound between the second and third sprockets 812, 813 of the first and second driven sprockets 831, 832, respectively.
4 respectively raise the tray supporting means and lower each counter weight 85.

[0009]

However, in the above-mentioned conventional hoisting chain drive, since the four hoisting chains are wound around each sprocket on the driving side in a range of 90 °, each hoisting chain is driven. In this case, there is a problem in that the range in which the gears mesh with the teeth on each sprocket is short, and during operation, each elevating chain slides on each sprocket to cause so-called skipping of pieces. Further, since two sprockets are used to transmit the power of the drive motor to the drive shaft, and a total of ten sprockets are required, the number of parts is large, and at least three types of sprockets are used for each function. There is a problem that it is necessary and the cost is high.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem. In a lifting chain drive device, the number of parts is reduced as a whole, and a common sprocket is used to reduce the cost. The purpose of the present invention is to realize a reliable drive of the elevating chain by expanding a meshing range of the hoist and the sprocket.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, a hoisting chain drive device according to the present invention comprises a drive-side sprocket group formed on one side of an upper portion of a hoistway, and a sprocket group on one side and the other side. A group of sprockets on the driven side and auxiliary sprockets arranged as idlers between the sprockets on the driving side and the driven side are provided.
Among the elevating chains of the book, the first and second elevating chains are pressed and wound from above by auxiliary sprockets between opposing driving sprockets and driven sprockets, The fourth lifting chain was wound around each sprocket on the driving side.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The lifting chain drive device according to the first aspect of the present invention is formed on one side of an upper portion of a hoistway of a lift and is integrally connected to a drive shaft directly connected to the drive device. A drive-side sprocket group, an independent driven-side sprocket group formed on one side and the other side thereof, and an auxiliary sprocket group arranged as an idler between the drive-side sprocket and the driven-side sprocket, The lifting chain wound around the driving-side sprocket and the driven-side sprocket facing each other is pressed from above by the auxiliary sprockets.

[0013] According to a second aspect of the present invention, in the lifting chain drive device of the first aspect, the lifting chain is wound on the driving side sprocket over a range of 120 ° or more.

In each of the above configurations, of the four lifting chains, the first and second lifting chains are disposed between the opposing driving sprocket and the driven sprocket.
The auxiliary sprockets are pressed down from above and wound around, and the third and fourth elevating chains are wound around sprockets on the driving side to suspend the elevating means mounted on the vehicle.

Accordingly, the range of engagement of each lifting chain on each of the sprockets on the driving side and the driven side is expanded, and it is possible to prevent the lifting and lowering chains from jumping over the pieces and to realize the reliable driving thereof.

According to a third aspect of the present invention, in the lifting chain drive device of the first and second aspects, the drive-side sprocket group comprises four sprockets.

According to a fourth aspect of the present invention, in the lifting chain drive device of the first, second and third aspects, the driven side sprocket group is constituted by two sprockets.

According to a fifth aspect of the present invention, in each of the first, second, third, and fourth configurations, the auxiliary sprocket group is constituted by two sprockets.

Since the lifting chain is driven by eight sprockets as a whole in each of the above configurations, the number of parts can be reduced as compared with the conventional case.

According to a sixth aspect of the present invention, there is provided an elevating and lowering chain drive device according to the first, second, third, fourth, and fifth configurations, wherein each sprocket on the driving side, each sprocket on the driven side, and each auxiliary All sprockets are common.

From the above configuration, the number of parts is reduced,
The cost can be significantly reduced.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Here, the parking device is illustrated as an underground multi-layer flat reciprocating parking device.

FIG. 1 shows the overall structure of the parking device, and FIGS. 2 to 7 show the structure of each part thereof.

In FIG. 1, reference numeral 1 denotes a transport path, and reference numeral 2 denotes a self-propelled transport cart that is disposed on the transport path 1 and transports a tray 3 for automatic mounting on a vehicle. Reference numeral 4 denotes a hoistway set on the transport path 1, and reference numeral 5 denotes a lift installed on the hoistway 4 to move the tray 3 up and down.

As shown in detail in FIG. 2, a pair of rails 101 for the transport vehicle 2 are laid along each side of the transport path 1 on each storage level of the vehicle. An intermittent portion 102 for passing the lift 5 is formed at a predetermined position on the hoistway 4 on the pair of rails 101. Here, the transport trolley 2 includes a trolley frame 201 that constitutes the entirety, and a pair of traversing rails 202 for the tray 3 disposed on both sides in the longitudinal direction thereof in the width direction.
2 wheels 203 on both sides in the width direction
Are supported, and a total of eight wheels 203 are provided, four wheels on each side. A tray transfer device 21 is mounted on the transport trolley 2. The tray transfer device 21 includes a swing arm 212 having an engagement member 211 formed of a roller at the tip thereof, and a drive motor 213 for driving the swing arm 212 to rotate. The tray 3 can be transferred to and from each of the storage rooms 11.

Incidentally, as shown in FIG.
A pair of traversing rails 111 is disposed in each of the plurality of storage chambers 3 arranged in a row on both sides of the vehicle, and the tray 3 for automatic vehicle mounting can be moved on the traversing rails 111 via rollers (not shown). Are located in Although not shown, these trays 3 are provided on both sides in the longitudinal direction thereof with engagement recesses which can be engaged with engagement projections projecting from claw portions 521 of the lift 5 described later.

In such a car storage level, the hoistway 4 is set at an intermediate position on the transport path 1 and at an arbitrary position corresponding to the storage room 11, and as shown in FIG. The lift section 5 is installed by communicating the set entry section 41 of the car and each storage level. That is, FIGS.
As shown in the figure, four corners of the hoistway 4
The guide rails 51 are erected, and a pair of lifting members 52 are provided on both sides of the hoistway 4 corresponding to the front and rear of the carrier 2.
Are arranged in the width direction of the transport path 2. As shown in FIG. 2, each of these elevating members 52 traverses a pair of rails 101 through an intermittent portion 102, and as shown in FIGS. Is connected to the slidable lifting rod 53 via the. Claws 521 protruding toward the inside of the hoistway 4 are integrally attached to both ends of these elevating members 52, so that the tray 3 is hooked at four points as a whole to ascend and descend. . In addition, each claw part 521
In addition, an engagement protrusion which can be engaged with each engagement concave portion on the lower surface of the tray 3 is provided at the tip thereof so as to protrude upward.

3 and 4 on the upper side of the guide rail 51.
As shown in FIG.
That is, it includes a drive-side sprocket group 61 and its drive motor 62, a driven-side sprocket group 63, and an auxiliary sprocket group 64, and each of the drive-side sprockets 611 to 614 and each of the driven-side sprockets 631,6.
32 and the auxiliary sprockets 641 and 642, a total of four elevating chains 71 to 74 are bridged, and the elevating chains 71 to 74 are connected to the respective elevating rods 53.
The pair of elevating members 52 are suspended.

In FIG. 5, the drive-side sprocket group 6
1 is a pair of first, second, third and fourth sprockets 611 arranged in parallel on one side of the upper part of the hoistway 4, in this case, two pairs each on the left and right sides on the front side.
612, 613, and 614, and are composed of four common sprockets as a whole. The first to fourth sprockets 611 to 614 are connected via a drive shaft 615. A drive motor with a reduction gear is used for the drive motor 62 in FIG.
4, the drive shaft 615 is directly connected to the drive motor 62.

In FIG. 5, the sprocket group 6 on the driven side
3 is a pair on the right and left sides of the upper side of the hoistway 4 on the other side, here on the rear side, and is arranged in parallel, and the first and fourth sprockets 611 and 6 on the drive side are arranged in parallel.
14 and fifth and sixth sprockets 631 and 632, which are opposed to each other at a distance from each other, and are composed of two sprockets as a whole. These sprockets 631,
Reference numeral 632 is common to the first to fourth sprockets 611 to 614.

In FIG. 5, the auxiliary sprocket group 64
Are the first and fourth sprockets 611, 61 on the drive side.
4 and the fifth and sixth sprockets 631, 6 on the driven side.
32, the seventh and eighth sprockets 641, 64 arranged in parallel with each other in a pair near the driving side.
2 is provided. These sprockets 641, 64
2 denotes first to sixth sprockets 611 to 614, 63
1, 632.

In FIG. 5, four lifting chains 71 to 71
74, the first and second elevating chains 71 and 72 are the first and fourth sprockets 611 on the driving side, respectively.
614 and the fifth and sixth sprockets 631 on the driven side,
6 and 7, as shown in FIGS. 6 and 7, it is wound while being pressed from above by auxiliary seventh and eighth sprockets 641 and 642, and the first and fourth drive-side first and fourth sprockets 641 and 642 are wound around. Each of the auxiliary seventh and eighth sprockets 641, 641 is inclined downward from the sprockets 611, 614 toward the auxiliary seventh and eighth sprockets 641, 642.
Fifth and sixth sprockets 63 on the driven side from 642
1, 632, and wound around a range exceeding 90 ° on each of the drive-side and driven-side sprockets 611, 614, 631, 632. Here, in particular, in each of the sprockets 611 and 614 on the driving side, the elevating chains 71 and 72 are wound around a range of 100 ° or more, preferably 120 ° or more. As shown in FIG. 5, one end of each of the elevating chains 71 and 72 is connected to each of the elevating rods 53 on the rear side, and a pair of counterweights 75 is connected to the other end. The third and fourth elevating chains 73 and 74 are respectively wound around second and third sprockets 612 and 613 on the driving side, and one end of each of the elevating chains 73 and 74 is attached to each of the front elevating rods 53. Concatenated,
The other end is connected to each of the pair of counter weights 75.

Next, the operation of the lifting / lowering chain driving device 6 will be described together with the operation of entering and exiting the vehicle of the entire parking device.

(Incoming operation) In FIG. 1, the empty tray 3 is supported by the claw portions 521 of the pair of elevating members 52 of the lift 5 at four points in the entry section 41 of the automobile, and stands by. The parking car gets on the tray 3 by self-propelled. Subsequently, the lifting / lowering chain drive 6 of the lift 5 starts operating.

By the reverse rotation of the drive motor 62, the first to fourth sprockets 611 to 61 on the drive side in FIG.
4 is driven to rotate in the same direction, and the fifth and sixth sprockets on the driven side are driven via the first and fourth sprockets 611 and 614 and the auxiliary seventh and eighth sprockets 641 and 642. First and second elevating chains 71 and 72 wound between the first and second sprockets 631 and 632, and third and fourth elevating and lowering chains wound on the second and third sprockets 612 and 613 on the driving side. The chains 73 and 74 respectively raise the respective counterweights 75, while lowering the respective lifting rods 53 to lower the pair of lifting members 52 and lower the tray 3 mounted on the garage vehicle to a designated level.

In the designated hierarchy, the transport vehicle 2 is previously standby on the hoistway 4, and at the same time when the pair of lifting members 52 of the lift 5 pass before and after the transport vehicle 2, the tray 5 mounted on the incoming vehicle is transferred from the lift 5. Is transferred to the carrier 2. Subsequently, the transport trolley 2 travels on the transport path 1 to the designated storage room 11, where the tray delivery device 21 sends out the incoming vehicle together with the tray 3 to the storage room 11 and stores it.

(Exiting operation) In FIG. 1, first, the transporting trolley 2 travels on the transport path 1 to the storage room 11 designated for exiting.
Then, the tray 3 mounted on the delivery vehicle is moved to the tray transfer device 21.
Is pulled out onto the transport trolley 2. Subsequently, the transport trolley 2 travels on the transport path 1 toward the hoistway 4.

The lift 5 waits downstairs in advance, and the carrier 2 enters the hoistway 4. Subsequently, the lifting / lowering chain drive 6 of the lift 5 starts operating. By the forward rotation of the drive motor 62, the first to fourth sprockets 611 to 614 on the drive side in FIG. 5 are driven to rotate in the same direction, and the first and fourth sprockets 611 and 614 and the auxiliary seventh and First and second elevating chains 71 and 7 wound around driven fifth and sixth sprockets 631 and 632 via eighth sprockets 641 and 642, respectively.
2. Second and third sprockets 612, 61 on the drive side
A third and fourth elevating chain 73 wound around 3;
74 respectively move down the respective counterweights 75 and raise the pair of raising / lowering members 52 by raising the respective raising / lowering rods 53 to move the tray 3 mounted on the retrieval vehicle to the loading section 41 on the ground floor.
It rises until.

When the tray 3 mounted on the exiting vehicle is lifted to the entry section 41, the front of the vehicle is directed to the exit by turning a turntable (not shown), and the vehicle exits the vehicle by itself.

As described above, in the above-described embodiment, the drive-side sprocket group 61 integrally formed on the drive shaft 615 which is directly connected to the drive motor 62 at the front of the hoistway 4 is formed. The auxiliary sprockets 641 and 642 as idlers are arranged between the drive-side sprockets 611 and 614 and the driven-side sprockets 631 and 632, respectively. , The second lifting chains 71, 72 are opposed to each other, and the driving side sprockets 611, 614 and the driven side sprockets 631, 63 are opposed to each other.
2 and the auxiliary sprockets 641 and 642 are pressed from above and wound around, and the third and fourth elevating chains 73 and 74 are connected to the sprockets 61 on the driving side.
2, 613, so that each elevating chain 71-74 is connected to each sprocket 611,
612, 613, 614 and the sprockets 631, 632 on the driven side, the engagement range is enlarged,
It is possible to prevent the lifting chains 71, 72 from skipping over the pieces and to realize the reliable drive. First and fourth sprockets 611 and 614 on the driving side and fifth and sixth sprockets on the driven side.
In each of the long elevating chains 71, 72 wound between the respective sprockets 631, 632, the elevating chains 71, 72 are wound on the driving side sprockets 611, 614 in a range of 100 ° or more, preferably 120 ° or more. Therefore, the driving force can be greatly improved.

The drive-side sprocket group 61 is
To the fourth sprocket 611 to 614, the driven sprocket group 63 is configured by the fifth and sixth sprockets 631 and 632, and the auxiliary sprocket group 64 is configured by the two sprockets 641 and 642. Since it is composed of eight sprockets as a whole, the cost can be reduced with a smaller number of parts as compared with the conventional case.

Further, each of the drive-side sprockets 611-611
Since the 614, the driven sprockets 631 and 632, and the auxiliary sprockets 641 and 642 are all common, parts management and maintenance are easy, and the cost can be reduced.

In this embodiment, the lifting chain drive device is applied to a multi-layer flat reciprocating parking device. However, it is needless to say that the present invention can be similarly applied to other various parking devices.

[0044]

As is apparent from the above embodiment, according to the present invention, at the upper part of the hoistway, the driving sprocket group formed on one side and the driven sprocket group formed on one side and the other side. Group, and auxiliary sprockets each arranged as an idler between each of the drive-side and driven-side sprockets. Of a total of four lifting chains, the first and second lifting chains are opposed to each other on the driving side. The auxiliary sprockets are pressed from above and wound around the sprocket of the driven side and the driven side sprocket, and the third and fourth elevating chains are wound around the sprockets of the driving side. The lifting chain can be prevented from jumping over the sprockets on each sprocket, and the ascending and descending operation can be realized.

Also, due to its structure, each lifting chain wound between each driving sprocket and each driven sprocket is placed on each driving sprocket by one.
By wrapping around a range of 20 ° or more, the driving force can be improved.

Further, since it can be constituted by eight common sprockets as a whole, the number of parts can be reduced as compared with the conventional elevating and lowering chain drive, and the cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall configuration of an underground multilayer flat reciprocating parking device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of the parking device.

FIG. 3 is an enlarged side view showing a lift used in the parking device and a lifting / lowering chain driving device thereof.

FIG. 4 is an enlarged end view showing a lift used in the parking device and a lifting / lowering chain driving device thereof.

FIG. 5 is a perspective view showing a lift used in the parking device and a lifting / lowering chain driving device thereof.

FIG. 6 is an enlarged side view showing a winding mode of the lifting chain in the lifting chain drive device of the lift used in the parking device.

FIG. 7 is an enlarged plan view showing a winding mode of the lifting chain in the lifting chain drive device of the lift used in the parking device.

FIG. 8 is a perspective view showing a basic configuration of a conventional lifting chain drive device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyance path 101 A pair of rails 102 Intermittent part 11 Storage room 111 Traversing rail 2 Carriage cart 201 Truck frame 202 Traversing rail 203 Wheel 21 Tray delivery device 211 Engagement member 212 Swivel arm 213 Drive motor 3 Tray for automatic in-vehicle loading 4 Elevation Road 41 Vehicle entry part 5 Lift 51 Guide rail 52 A pair of elevating members 521 Claws 53 Elevating rod 6 Elevating chain drive 61 Driving sprocket group 611 Driving first sprocket 612 Driving second sprocket 613 Drive-side third sprocket 614 Drive-side fourth sprocket 615 Drive shaft 62 Drive motor 63 Driven-side sprocket group 631 Driven-side fifth sprocket 632 Driven-side sixth sprocket 64 Auxiliary sprocket group 64 Seventh eighth sprocket 71 first lift chain 72 second lift chain 73 third lifting chain 74 fourth lifting chain 75 counterweight sprocket 642 aid of auxiliary

Claims (6)

[Claims] 1. A drive-side sprocket group formed on one side of a lift shaft of a lift and integrally connected to a drive shaft directly connected to a drive unit, and an independent sprocket group formed on one side and the other side thereof. A group of driven sprockets and a group of auxiliary sprockets arranged as idlers between the driving sprocket and the driven sprocket are provided between the opposing driving sprocket and the driven sprocket. An ascending and descending chain drive device, wherein an ascending and descending elevating chain is pressed from above by auxiliary sprockets. 2. The elevating chain is wound over a range of 120 ° or more on a drive-side sprocket.
The lifting / lowering chain driving device according to 1. 3. The lifting / lowering chain drive device according to claim 1, wherein the drive side sprocket group comprises four sprockets. 4. The lifting chain drive device according to claim 1, wherein the driven side sprocket group comprises two sprockets. 5. The lifting chain drive device according to claim 1, wherein the auxiliary sprocket group comprises two sprockets. 6. The lifting chain drive device according to claim 1, wherein each of the drive-side sprocket, the driven-side sprocket, and the auxiliary sprocket is common.