JP2001032561A - Level locking device for lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent jumping-up due to the load fluctuation of lifts while relaxing the impulsive load of the lifts after the release of level locking in the lifts for various facilities. SOLUTION: A locking member 21 on the movable side is composed of an arm member having a curved retaining groove at a front end and a feed drive mechanism for the arm member. An inclined section successively releasing engagement to locking members 33 on the fixing side is formed to the retaining groove of the arm member. The locking members 33 on the fixing side are constituted of roller members and supporting members for the roller members. A lifting-lowering frame 5 for the lift is stopped at the same level to each housing section 14, and both each locking members 21, 33 are engaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level lock device for a lift used for a lift provided in such a facility such as a mechanical parking facility or an automatic warehouse facility.

[0002]

2. Description of the Related Art Conventionally, in a mechanical parking facility provided with a lift, although a lift is controlled by a lifting drive device to be stopped at a fixed position corresponding to each storage unit, an automobile is mounted on the lift. And when the car is not loaded, because the load on the lift is different, a slight level difference occurs between the stop position of the lift and the storage unit due to expansion and contraction of the lifting chain that drives the lift up and down, Due to the occurrence of the level difference, the delivery of the vehicle between the lift and the storage unit sometimes lacks smoothness. In addition, when the vehicle moves from the lift to the storage unit or vice versa, the lifting chain expands and contracts due to the load fluctuation when the vehicle is moved, and the tray for the tray on the lift and the tray for the storage unit There was a step between the rail and the tray, and when the tray moved between these rails, the wheels of the tray passed through the step.

[0003] In order to eliminate such a level difference, the lift of the lift caused by the load fluctuation when the vehicle is moved from the lift to the storage unit or vice versa, and the impact noise (noise) of the tray accompanying the lift. In order to eliminate the occurrence, a level lock device of a lift is used in the mechanical parking equipment. This type of level lock device is disposed on both sides of the lift, and is formed on a movable lock member that can move outward and retreat, and on both sides of the hoistway of the lift, and is formed in a multistage along the hoistway. A fixed lock member is provided corresponding to the plurality of storage portions and is engageable with the movable lock member. The lift is engaged with the movable lock member and the fixed lock member. It is designed to lock to the storage level.

An example is disclosed in Japanese Patent Publication No. 6-74657. Hereinafter, the outline will be described with reference to FIG. In the present invention, a lift table 72 having a cam mechanism 71 for level adjustment mounted on a lift 70 is provided so as to be able to move up and down, and both ends of a table frame 73 constituting this lift table 72 are provided at both ends. A level securing arm 74 driven by the cam mechanism 71 so as to be able to protrude and retract is provided. Further, a level securing guide 75 is provided at a stop position of the lift 70 corresponding to the level of the storage unit on the hoistway of the lift.

In this manner, the initial stop position of the lift table 72 is always set lower than the level of the storage section, and the cam mechanism 71 for level adjustment is driven in this state, whereby the lift table 72 is moved to the storage section. It rises to the level, and the level securing arm 74 is protruded in conjunction with this, and is fitted to the level securing guide 75 on the hoistway. As a result, the level of the movable lift table 72 and the level of the fixed storage section are held horizontally.

[0006]

However, the above-described conventional lift level lock device has the following problems. (1) The structure of the level adjusting cam mechanism for driving the movable locking member (level securing arm) is complicated, and the cost is high. (2) Before the movable locking member (level securing arm) engages with the fixed locking member (level securing guide), the level adjustment is performed at the initial stop position of the lift table lower than the level of the storage unit. By driving the cam mechanism to raise the lift table to the level of the storage unit, a large power is required here. (3) When the transfer of the vehicle from the storage section to the lift is completed, and when the movable locking member and the fixed locking member are released,
When the level securing arm is separated from the level securing guide, the lift chain of the lift is rapidly extended due to the weight of the lift on which the vehicle is mounted, and the lift chain of the lift and its driving device are subjected to an impact load. The present invention solves such a conventional problem, and a lift level lock device used for a lift provided in this type of equipment, such as a mechanical parking facility or an automatic warehouse facility, simplifies the entire device configuration. To reduce the cost of the lift, to eliminate the need for large power by a special device to match the level of the lift and the storage unit, and to lift the vehicle due to load fluctuations when loading or unloading the vehicle from the lift It is an object of the present invention to reliably prevent bouncing up and to reduce an impact load applied to a lift chain and a drive device of a lift after a level lock is released.

[0007]

In order to achieve the above object, according to the present invention, a movable locking member is provided by: an arm member having a curved locking groove formed at a tip; And the lock member on the fixed side is made up of a roller member and its support member, and the lift is stopped at the same level with respect to each storage section, and the lock member on the movable side is fixed. With the lock member on the side. The locking groove of the arm member is provided with an inclined portion for gradually releasing the engagement with the roller member. Further, the feed driving mechanism of the arm member is configured by an arm guide that supports the arm member and guides the moving direction thereof, and a driving device of the arm member. The driving device includes a driving motor, a screw shaft, and a ball. Using screws and
Fix the arm member to the ball screw. In this way,
In level lock devices of lifts used for lifts equipped with various facilities such as mechanical parking facilities and automatic warehouse facilities,
Simplify the overall device configuration to reduce costs, eliminate the need for large power by special devices to match the level of the lift and the storage unit, and furthermore, when loading a car on a lift or unloading a car from a lift In addition to reliably preventing the lift from jumping up due to the load fluctuation, the impact load applied to the lift chain and the drive unit of the lift after the level lock is released is reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a lift level lock device according to a first aspect of the present invention, a movable lock member is formed by horizontally moving an arm member having a curved locking groove formed at a tip thereof and an arm member horizontally. And a lock member on the fixed side is formed by a roller member and its support member. From the above structure, at the lift stop position, the arm member is fed in the horizontal direction by the drive mechanism, and the locking groove at the tip of the arm member smoothly and securely engages with the roller member due to its curved shape. Is fixed. Thus, with a simple device configuration, it is possible to reliably prevent the lift from jumping up due to a load change when the vehicle is placed on the lift or when the vehicle is dropped from the lift.

According to a second aspect of the present invention, there is provided a level lock device for a lift according to the first aspect, wherein the lift is stopped at the same level as the storage portion, and the movable side lock member and the fixed side lock member are connected to each other. Are engaged. From the above configuration, the lift is stopped at the same level as the storage unit, and at this position, the arm member is fed horizontally by the drive mechanism,
The curved shape at the tip end smoothly and reliably engages the roller member by the curved shape, and fixes the lift at the same level as the storage section. This allows the level of the lift and the storage unit to be matched with a simple device configuration without requiring large power by a special device, and furthermore, when loading a car on a lift or unloading a car from a lift. The lift of the lift caused by the load fluctuation is surely prevented.

According to a third aspect of the present invention, in the lift level lock device according to the first or second aspect, the inclined groove for gradually releasing the engagement with the roller member is provided in the locking groove of the arm member. Have According to the above configuration, the lift is stopped at the same level as the storage unit, and at this position, the arm member is fed horizontally by the drive mechanism, and the locking groove at the tip end is smoothly and reliably engaged with the roller member by its curved shape. Then, fix the lift at the stop position of the lift (at the same level as the storage unit). Further, when releasing the level lock, the fixing of the lift is released while the lifting / lowering chain is gradually expanded and contracted by gradually moving the arm member away from the roller member by the inclined portion thereof. This allows the level of the lift and the storage unit to be matched with a simple device configuration without requiring large power by a special device, and furthermore, when loading a car on a lift or unloading a car from a lift. In addition to reliably preventing the lift from jumping up due to the load fluctuation, the impact load applied to the lift chain and the drive unit of the lift after the level lock is released is reduced.

According to a fourth aspect of the present invention, in the lift level lock device according to any one of the first to third aspects, the arm member is supported by a feed drive mechanism for the arm member, and the moving direction is guided. Arm guide and a driving device for the arm member. From the above configuration, the lift is stopped at the same level as the storage unit, and at this position, the arm member is fed in the horizontal direction by the arm guide and the driving device, and the locking groove at the tip is smoothly and reliably rolled by the curved shape. Engage the member and lock the lift at the stop position of the lift (at the same level as the stowage). Further, when releasing the level lock, the fixing of the lift is released while the lifting / lowering chain is gradually expanded and contracted by gradually moving the arm member away from the roller member by the inclined portion thereof. This allows
With a simple device configuration, the level between the lift and the storage unit can be matched without requiring large power by special device, and furthermore, the load fluctuation when loading the vehicle on the lift or unloading the vehicle from the lift In this way, it is possible to reliably prevent the lift from being lifted up, and reduce the impact load applied to the lift chain and the drive unit of the lift after the level lock is released.

According to a fifth aspect of the present invention, there is provided a lift level lock device according to the fourth aspect, wherein the screw shaft is disposed in parallel with the arm guide on the driving device for the arm member and operatively connected to the driving source. And a ball screw screwed onto the screw shaft, and the arm member is fixed to the ball screw. From the above configuration,
The driving device for the arm member has a simple structure.

According to a sixth aspect of the present invention, there is provided a lift level locking device according to the fifth aspect, wherein a right-handed screw and a left-handed screw shaft are used and operatively connected to a common drive source. . From the above configuration, the driving device for the arm member has a simple structure.

According to a seventh aspect of the present invention, there is provided a lift level lock device according to the fourth aspect, wherein a hydraulic cylinder or an air cylinder is provided in a driving device of the arm member, and the arm member is fixed to an operating portion thereof. Is what it is. From the above configuration, the driving device for the arm member has a simple structure.

(Embodiment) FIG. 1 shows the configuration of an embodiment of the present invention. In the present embodiment, a lift level lock device applied to a so-called elevator type multi-story parking device is illustrated.

In FIG. 1, reference numeral 1 denotes a multi-story parking device.
2 is the lift and 3 is the hoistway. Lifts 2 are installed at four corners of the hoistway 3 and installed in total.
The apparatus includes a lifting guide 4 for books, a lifting frame 5 arranged between the lifting guides 4 so as to be able to move up and down, and a driving mechanism 6 therefor. Here, the drive mechanism 6 includes a drive motor 7, a drive motor 7
A total of four drive-side sprockets 8 operatively connected to
Further, a total of two driven-side sprockets (not shown) arranged opposite to the two driving-side sprockets.
Auxiliary sprockets (not shown) arranged between the two driving sprockets and the driven sprocket, and the auxiliary sprockets respectively held between the two driving sprockets and the driven sprocket by the auxiliary sprockets. The two elevating chains 9 that are bridged, the two elevating chains 9 that are wound around the remaining two drive-side sprockets, and one end of the four elevating chains 9 are connected to the elevating guide 4. And a lifting rod (not shown) assembled so as to be able to ascend and descend, and a weight (not shown) connected to the other ends of the four lifting chains 9. The lifting frame 5 is attached to each lifting rod connected to the four lifting chains 9, and is moved up and down on the hoistway 3 between the uppermost layer and the lowermost layer by the operation of the drive motor 7.

As shown in FIG. 2, a pair of rails 501 for traversing the tray are fixed to the lifting frame 5 of the lift in the front and rear directions in the width direction, and a tray transfer device is provided between these rails 501. 10 are mounted. Here, the tray transfer device 10 is arranged so that the center of rotation is set at a predetermined position in the center in the width direction of the elevating frame 5 so as to be pivotable in the horizontal direction, and the tip protrudes by a predetermined size toward the storage unit 14 of each level. Arm 11 having a length to be rotated, a roller member 12 attached to the tip of the swing arm 11, and a direct-coupled servomotor 13 as a drive motor for rotating the swing arm 11. The tray 16 is moved linearly between the lifting frame 5 and the storage section 14 of each layer described later by the engagement between the roller member 12 at the tip and the guide member 17 on the lower surface of the tray 16.

In FIG. 1, reference numerals 14 denote storage portions of an automobile, which are formed in multiple stages along both sides of the hoistway 3 of the lift. As shown in FIG. 2, a pair of traversing rails 15 are laid on these storage sections 14 on both front and rear sides thereof.
Are mounted on front and rear sides of the lower surface so as to be able to traverse with wheels mounted thereon. A guide member 17 made of a pair of angle members arranged in parallel from the center to the front side is attached to one side of the hoistway 3 on the lower surface of the tray 16 used here. Note that both ends of the guide member 17 are expanded in a C shape.

In FIG. 1, reference numeral 20 denotes a lift level lock device, which is disposed on both sides in the longitudinal direction of the elevating frame 5, that is, at the front and the rear, respectively, and is capable of moving back and forth toward the outside (here, toward the storage unit). A movable locking member 21 is provided on both sides of the hoistway 3 of the lift, on the front side and the rear side, respectively, in correspondence with the plurality of storage portions 14 formed along the hoistway 3, and the movable side lock is provided. A lock member 33 on the fixed side that can be engaged with the member 21.

The movable side locking member 21 is shown in FIGS.
As shown in FIG. 5, a total of four arm members 22 and two sets of feed driving mechanisms 2 for feeding these arm members 22 in the horizontal direction are provided.
5 is provided. Each of the arm members 22 is entirely made of a substantially rectangular plate material, and has a curved locking groove 23 at the end thereof. The upper and lower sides of the locking groove 23 are inclined portions 24 symmetrical about the center of the distal end edge of the arm member 22 and are formed in a so-called tapered shape. The upper and lower inclined portions 24 are set with a predetermined inclination angle and a predetermined length for gradually releasing the engagement with the lock member 33 on the fixed side. The inside of the locking groove 23 has a substantially semicircular shape, and the diameter thereof is set to a predetermined size with which the locking member 33 on the fixed side can be engaged. An arm member feed drive mechanism 25 supports each arm member 22 and guides the movement direction of the arm member 22, and an arm member drive device 27.
Consists of Here, the arm guide 26 includes a plurality of upper guide rollers 26U and a plurality of lower guide rollers 26D. These guide rollers 26U and 26D are provided at predetermined intervals (intervals at which the arm members 22 can be arranged) between the upper guide rollers 26U and the lower guide rollers 26D, and are provided on the front and rear side surfaces of the lifting frame 5. On the other hand, they are arranged in parallel at a slightly lower position. Arm member driving device 2
7 is a geared motor 28, a right screw 29R and a left screw 2
A 9L screw shaft 29 and a ball screw 30 are provided, and the arm member 22 is attached to the ball screw 30 on one side of one side via a bracket. As shown in FIG. 4, the geared motor 28 has a right-hand screw 29R.
And the screw shaft 29 of the left screw 29L are connected,
A ball screw 30 having an arm member 22 attached to each of the right screw 29R and the left screw 29L is screwed together. The screw shaft 29 is fixed to the attached bracket 31, and the screw shaft 29 is pivotally supported by bearings 32 attached to both ends of the side surface of the elevating frame 5, respectively. Installed in the middle position. Each arm member 2 attached to each ball screw 30
Reference numeral 2 is disposed between a plurality of upper guide rollers 26U and lower guide rollers 26D disposed at both ends of the side surface of the lifting frame 5. In this manner, each arm member 22 is arranged with the locking groove 23 at the tip thereof facing the storage section 14, and is driven in the horizontal direction by the linear motion of the ball screw 30 on the screw shaft 29.

The fixed locking member 33 is a roller member 34.
And a supporting member 35 thereof, and are arranged at positions corresponding to the respective arm members 22 of the elevating frame 5 in proximity to the storage units 14 of the respective levels. Here, the support member 35 is connected to each storage unit 1.
The roller member 34 is fixed to a predetermined position under the lower part 4, and a roller member 34 is pivotally supported at the tip thereof so as to be able to face each arm member 22 of the lifting frame 5. Here, the predetermined position is a position facing the arm member 22 disposed on the lifting frame 5 when the lifting frame 5 is stopped at the same level as the storage units 14.

In FIG. 1, reference numeral 18 denotes a control panel, which controls the entire multi-story parking device 1 including a lift level lock device 20. In the case of the multi-story parking device 1, the stop position of the lifting frame 5 is controlled based on a pulse signal from an encoder incorporated in the lift driving mechanism 6, and the lifting frame 5 stops at the same level with respect to each storage unit 14. Is done. When the lifting frame 5 stops, the level lock device 20 of the lift is operated, and the lock member 21 on the movable side and the lock member 33 on the fixed side are engaged. Note that such a control method of the stop position of the lifting frame 5 is described in the storage unit 1 of each level.
For example, various sensors may be used, for example, a proximity switch may be provided for each of the sensors 4 and the sensing frame may be provided on the lifting frame 5.

Next, the operation of the lift level lock device 20 will be described together with the operation of the multi-story parking device 1. When the car is unloaded, in FIG. 1, under the control of the control panel 18, the lifting frame 5 is moved up or down to the storage unit 14 of the hierarchy specified by the drive mechanism 6, and the storage unit 14 of the hierarchy is Stopped at the same level. Subsequently, the level lock device 20 of the lift is operated. As shown in FIG. 6, each of the front and rear arm members 22 of the lifting frame 5 is moved by the feed drive mechanism 25, that is, the geared motor 28.
The screw shaft 29 is rotationally driven by the operation of
The ball screw 30 on the right-hand screw 29R and the ball screw 30 on the left-hand screw 29L are respectively moved in the direction of the two storage sections 14 in the hierarchy. Along with the linear movement of these ball screws 30, each arm member 22 attached to each ball screw 30 is moved horizontally by the guidance of an arm guide 26 (upper guide roller 26U and lower guide roller 26D), and the storage section 14 of the corresponding layer is moved. Is advanced toward the roller member 34 disposed at the lower part of the roller. Lock groove 23 of each arm member 22
When the gears are engaged around the roller member 34, the operation of the geared motor 28 is stopped to stop each ball screw 30 and stop the movement of each arm member 22. At this time, even if the height position between the arm member 22 and the roller member 34 is slightly shifted, the locking groove 23
The roller member 34 can smoothly enter the locking groove 23 due to the tapered shape of, and a reliable engagement between the two can be obtained. The engagement between the arm member 22 and the roller member 34 locks the elevating frame 5 at the same level as the storage unit 14 of the corresponding level.

Next, the tray transfer device 10 on the lifting frame 5
Is operated, the tray 16 on which the car is placed is moved from the storage section 14 to the lifting frame 5. As shown in FIG. 2, first, the rotation shaft is rotated by the operation of the direct-coupled type servomotor 13, and the turning arm 11 turns toward the storage unit 14 from the initial stop position parallel to the front-rear direction of the hoistway 3. Will be done. When the tip of the swing arm 11 enters the storage section 14 and the entire swing arm 11 is turned to a position perpendicular to the front-rear direction of the storage section 14, the swing arm 11
The roller member 12 at the tip is placed on the tray 16
Into one end of the guide member 17 on its lower surface.
The roller member 12 is moved along the guide member 17, and the tray 16 is pulled out on the pair of traversing rails 15 in the turning direction of the turning arm 11 with the turning of the turning arm 11,
It is moved on the rail 501 on the lifting frame 5. When the pivot arm 11 pivots to a position parallel to the longitudinal direction of the tray 16, the roller member 12 is moved to the tray 16.
The roller member 12 is moved in a direction to return on the guide member 17 with the rotation of the rotating arm 11 following the end of the guide member 17. In this way, when the swivel arm 11 moves to the predetermined swivel angle, it is stopped, and the tray 16 is completely transferred onto the lifting frame 5. In the process of moving the tray 16 from the storage section 14 to the lifting frame 5, a large load change usually occurs in the lifting frame 5, and a load is applied to one of the lifting chains 9 on the storage section 14 side in a direction of extending the load. However, since the entire lifting frame 5 is locked at the same level as the storage section 14 by the lift level lock device 20, the elongation of the lifting chain 9 is prevented, and the lifting of the lifting frame 5 is prevented. The impact load on the lifting chain 9 of the lifting frame 5 and the entire driving mechanism 6 is reduced.

Next, the lift level lock device 20 is operated. As shown in FIG. 6, the screw shaft 29 is driven to rotate by the operation of the geared motor 28, and the ball screw 30 on the right screw 29R and the ball screw 30 on the left screw 29L are respectively moved toward the geared motor 28. . Each of the arm members 2 attached to each of the ball screws 30 together with the linear motion of these ball screws 30
2 is retracted in the horizontal direction by the guides of the arm guides 26 (upper guide roller 26U and lower guide roller 26D) in a direction away from the roller members 34 arranged below the storage section 14. Due to this separation, the weight of the lifting frame 5 is applied to the four lifting chains 9, and each lifting chain 9 is extended, so that the lifting frame 5 is stored in the storage unit 14.
It goes down to a certain extent with respect to the level. At this time, the elevating frame 5 is lowered while each roller member 34 slides on the lower inclined portion 24 formed at a predetermined angle and a predetermined length in the locking groove 23 of each arm member 22 moving backward. Therefore, the load from the lifting frame 5 is gradually received by each lifting chain 9, and each lifting chain 9 is gradually extended, and the lifting frame 5 is gradually lowered. Therefore, the lift level lock device 2
Upon release of 0, the lifting frame 5 is prevented from suddenly lowering, and the impact load on the lifting chain 9 of the lifting frame 5 and the entire drive mechanism 6 is reduced.

Next, the lift frame 5 of the lift is raised or lowered by the drive mechanism 6, and the tray 16 is transported to a not-shown car loading / unloading section, so that the car is automatically driven out of the car.

In addition, when the vehicle is to be stored in the vehicle, the vehicle enters the unloading / unloading section of the vehicle (not shown) in FIG. 1, and is placed on a tray 16 mounted on the elevating frame 5 which is landed in advance and is waiting. Based on the control of the control panel 18, the lifting frame 5 is moved up or down to the storage unit 14 of the hierarchy specified by the drive mechanism 6, and the storage unit 1 of the hierarchy is
Stop at the same level as 4. Subsequently, the level lock device 20 of the lift is operated, and as described above, the engagement of the four arm members 22 and the roller members 34 causes the lifting frame 5 to move.
Are locked to the same level as the storage unit 14.

Next, the tray transfer device 10 on the lifting frame 5
Is activated. The operation of the tray transfer device 10 is the reverse of the case of the above-described retrieval, and the tray 16 is moved from the lifting frame 5 to the storage unit 14. This tray 16 is the lifting frame 5
In the process of moving from the storage unit 14 to the storage unit 14, a load change occurs on the lifting frame 5, and the one of the lifting chains 9 on the opposite side to the storage unit 14 contracts by an amount that has been extended by the load of the vehicle. However, since the entire lifting frame 5 is locked at the same level as the storage section 14 by the lift level lock device 20, expansion and contraction of the lifting chain 9 is prevented. This prevents the lifting frame 5 from jumping up and reduces the impact load on the lifting chain 9 of the lifting frame 5 and the entire drive mechanism 6 thereof.

Next, the lift level lock device 20 is operated, and as described above, each arm member 22 is retracted in the direction in which each arm member 22 is separated from each roller member 34, and each roller member 34 and each arm member 22 are retracted. Is disengaged. Since the lifting frame 5 is lightened by the lowering of the vehicle, the four lifting chains 9 for suspending the lifting frame 5 are contracted by the amount of extension by the load of the vehicle. It rises to some extent with respect to the level of the storage unit 14. At this time, each roller member 3 of the lifting frame 5
4 rises while sliding on the upper inclined portion 24 formed at a predetermined angle and a predetermined length in the locking groove 23 of each arm member 22 moving backward, so that each lifting chain 9 gradually moves. It is contracted, and the lifting frame 5 is gradually raised. Therefore, when the level lock device 20 of the lift is released, the lifting of the lifting frame 5 is reduced.

As described above, according to the above embodiment, the movable locking member 21 is provided with the arm member 22 having the curved locking groove 23 formed at the tip thereof, and the feed drive mechanism for feeding the arm member 22 in the horizontal direction. 25, the locking member 33 on the fixed side is a roller member 34 and its supporting member 35
The lifting frame 5 of the lift is stopped at the same level with respect to each of the storage portions 14, each arm member 22 is fed in the horizontal direction, and the locking groove 23 at the tip thereof is engaged with each roller member 34. Unlike the prior art, the cost can be reduced with a simple device configuration, and the level of the lifting frame 5 and each storage unit 14 can be reduced.
Without the need for large power by special equipment,
It is possible to make sure that the lifting of the lifting frame 5 due to a load change when the vehicle is placed on the lifting frame 5 or when the vehicle is unloaded from the lifting frame 5 can be reliably prevented.

The locking groove 23 of each arm member 20 is formed in a tapered shape, and each of the roller members 34 is formed on both upper and lower sides thereof.
Since the inclined portion 24 for gradually releasing the engagement is provided, the lifting frame 5 is gradually lowered or lowered by gradually expanding and contracting the lifting chains 9 that suspend the lifting frame 5 when releasing the level lock. As a result, the impact load on the lifting chain 9 and the drive mechanism 6 of the lift can be reduced.

Further, the feed driving mechanism 25 of the arm member
An arm guide 26 and an arm member driving device 27 are provided, and the arm guide 26 is provided with a plurality of upper guide rollers 26U.
And a lower guide roller 26D, and a driving device 27 of the arm member is provided with a geared motor 28 and a right-hand screw 29.
An arm member 22 is attached to the ball screw 30, and the arm member 22 is connected to the arm guide 26.
, And the ball screw 30 on the screw shaft 29 driven by the geared motor 28 is driven in a horizontal direction by a linear motion of the ball screw 30. Down can be planned.

In the above-described embodiment, in order to reduce the cost, a right-handed screw and a left-handed screw shaft 29 are used for the feed drive mechanism 25 of the four arm members 22 to reduce the cost.
Although the gears are driven by the two geared motors 28, the four arm members 22 may be individually driven by one screw shaft and the geared motor. Further, a hydraulic cylinder or an air cylinder may be used instead of these components. In this case, the hydraulic cylinder or the air cylinder is fixed to the lifting frame, and the arm member is attached to the operation rod. With this configuration, the same operation and effect as those of the above embodiment can be obtained.

Also, in the above embodiment, the lift level lock device is applied to an elevator type multi-story parking device. Can be applied to equipment.

[0035]

As is apparent from the above embodiment, the present invention provides an arm member having a movable locking member formed with a curved locking groove at the tip, and a feed drive mechanism for feeding the arm member in a horizontal direction. And the fixed side lock member is constituted by a roller member and its support member, and the lift is stopped at the same level with respect to each storage portion, and the movable side lock member and the fixed side lock member are , So that lifts provided in various facilities such as mechanical parking facilities and automatic warehousing facilities can be reduced in cost with a simple device configuration, and the level of the lift and the storage unit match. This eliminates the need for large power from special equipment, and lifts the lift due to load fluctuations when loading or unloading the car from the lift. Ri can be reliably prevented.

Further, since the inclined groove for gradually releasing the engagement with the roller member is provided in the locking groove of the arm member, an impact load is applied to the lift chain and the driving device of the lift after the level lock is released. The noise can be reduced, and the generation of noise can be prevented.

Further, the feed driving mechanism for the arm member includes an arm guide for supporting the arm member and guiding the moving direction of the arm member, and a driving device for the arm member. The driving device includes a driving motor, a screw shaft, Since the arm member is driven by a simple linear motion using a ball screw, a hydraulic cylinder, or an air cylinder, the entire apparatus can have a simple structure and a large cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a multi-story parking device having a lift level lock device according to an embodiment of the present invention;

FIG. 2 is a plan view of the multi-story parking device.

FIG. 3 is an enlarged front view of a level lock device of the lift.

FIG. 4 is an enlarged plan view of a level lock device of the lift.

FIG. 5 is an enlarged side view of a level lock device of the lift.

FIG. 6A is an enlarged front view showing a state in which a movable locking member and a fixed locking member are not engaged in the level lock device of the lift; FIG. Enlarged front view showing a state where the lock member and the lock member on the fixed side are engaged.

FIG. 7 is a perspective view of a level lock device of a lift provided in a conventional multi-story parking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multilevel parking device 2 Lift 3 Lift hoistway 4 Lifting guide 5 Lifting frame 501 Rail 6 Drive mechanism 7 Drive motor 8 Sprocket 9 Lifting chain 10 Tray transfer device 11 Rotating arm 12 Roller member 13 Direct connection type servomotor 14 Storage part 15 Traversing rail 16 Tray 17 Guide member 18 Control panel 20 Lift level lock device 21 Movable lock member 22 Arm member 23 Lock groove 24 Inclined portion 25 Feed drive mechanism 26 Arm guide 26U Upper guide roller 26D Lower guide roller 27 Drive device 28 Geared motor 29 Screw shaft 29R Right screw 29L Left screw 30 Ball screw 31 Bracket 32 Bearing 33 Fixed locking member 34 Roller member 35 Support member

Claims (7)

[Claims] 1. A movable locking member disposed on both sides of a lift and capable of moving back and forth outward, and a plurality of storages formed on both sides of a hoistway of the lift and formed in a multi-stage along the hoistway. A lock member on the fixed side, the lock member being engageable with the lock member, and the lift being moved to the level of the storage unit by engagement of the lock member on the movable side and the lock member on the fixed side. In a level lock device of a lift for locking, a movable lock member is constituted by an arm member having a curved locking groove formed at a tip thereof, and a feed drive mechanism for feeding the arm member in a horizontal direction, The level lock device for a lift, wherein the lock member is constituted by a roller member and a support member thereof. 2. The lift level lock device according to claim 1, wherein the lift is stopped at the same level as the storage portion, and the movable lock member and the fixed lock member are engaged. 3. The locking groove of the arm member has an inclined portion for gradually releasing the engagement with the roller member.
A lift level lock device according to claim 1. 4. An arm guide supporting the arm member on a feed drive mechanism for the arm member and guiding the moving direction of the arm member,
The lift level lock device according to any one of claims 1 to 3, further comprising a drive device for the arm member. 5. A driving device for an arm member, comprising: a screw shaft disposed in parallel with an arm guide and operatively connected to a driving source; and a ball screw screwed on the screw shaft. The level lock device for a lift according to claim 4, wherein the level lock device is fixed. 6. The level lock device for a lift according to claim 5, wherein a right-handed and left-handed screw shaft is used and is operatively connected to a common drive source. 7. The lift level lock device according to claim 4, wherein the arm member driving device includes a hydraulic cylinder or an air cylinder, and the arm member is fixed to an operation portion thereof.