JPH0615952Y2 - Speed detector for mechanical parking system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a speed detecting device for a cage in a mechanical multi-level parking device, particularly in a vertical circulation multi-level parking device.

[Conventional technology]

FIG. 2 is a schematic view showing the structure of a vertical circulation type multi-level parking device, in which a drive chain 3 is hung on an upper sprocket 1 and a lower sprocket 2, and a cage supporting bracket 4 of the drive chain 3 is hinged to accommodate a vehicle. The cage 6 is suspended.

[Problems to be solved by the invention]

The cage 6 in such a parking device undergoes a horizontal speed change at the point where the vertical movement portion moves to the circular arc movement portion and at the circular movement portion, and therefore sways with the bracket 4 as a fulcrum (naturally the vertical speed). It is subject to change,
The multi-level parking system has a structure that makes it difficult for vertical vibration to occur). This sway becomes maximum during a transient state such as when the cage is started or decelerated in the circular arc motion part, which not only makes the user uneasy but also poses a safety problem in use.

In particular, with a tachometer generator mounted on the shaft of an electric motor (not shown) that drives the sprocket, a speed signal proportional to the rotational speed of the electric motor is extracted to obtain the ideal rotational speed of the electric motor, that is, the tangential speed of the drive chain 3. Even if the speed feedback control is performed so as to perform the deceleration or acceleration operation with reference to, the horizontal speed of the cage 6 cannot be directly and smoothly controlled.
It is not possible to solve the problem of cage sway in an arc motion part.

The present invention has been made in view of the above points, and is particularly used for a speed control device capable of suppressing the occurrence of sway by ideally changing the horizontal speed of the cage in the circular arc motion portion when the cage is started or decelerated. An object of the present invention is to provide a speed detecting device that can be used.

[Means for solving problems]

According to the present invention, a plurality of cages accommodating an automobile are suspended by a drive chain and circulated by a sprocket, and a chain having a plurality of engaging members corresponding to the plurality of cages is circulated and driven in synchronism with the sprocket. One end of the lever is rotatably connected to the peripheral portion of the disk, the other end of the lever is rotatably connected to the rack, and the rack has a crank movably supported in the longitudinal direction. In the peripheral portion of the disk, an engaged member that engages with the engaging member of the chain is provided on the diameter line orthogonal to the line connecting one end of the lever and the center so as to project, and via a pinion that engages with the rack. A speed detector for detecting the moving speed of the rack is provided.

[Action]

With the above-described configuration, the horizontal movement of the cage can be easily simulated regardless of how the rack is attached (movable horizontally, vertically, or diagonally).

〔Example〕

Hereinafter, for simplification, the case of deceleration will be described, and the description of start-up will be omitted. FIG. 1 is a block diagram of a horizontal velocity detecting device for a cage showing an embodiment of the present invention, and FIG. 3 is a view taken along the line II-II of FIG. 1, in which the same reference numerals as those in FIG. The same thing is shown, but 10 is a chain wheel that is attached to the shaft of the lower sprocket 2 and rotates in synchronization with the lower sprocket 2, and 11 is wrapped around the chain wheel 10 and rotated by the chain 12 in conjunction with the chain wheel 10. Chain wheels of the same diameter, 13 is a chain wheel that is attached to the shaft of the chain wheel 11 and rotates in synchronization with the chain wheel 11, and 14 is a chain wheel 13 that rotates in conjunction with a chain 15 wound around the chain wheel 13. Chain wheel with the same diameter as
Plate-like engaging members 17 (17A, 17B, ...) Having (16A, 16B, ...) Are provided at equal pitches for the number of cages, and the entire parking device is just scaled proportionally. It is designed to work with the parking device.
Reference numeral 18 denotes a disc rotatably supported by a shaft 14a of the chain wheel 14 (rotatably supported by a bearing 14b), and an engaging member 17 provided on the chain 15 on a diameter line passing through the center. (17A, 17B ...) has pins 19 and 20 at positions to be engaged with each other, and one end of a lever 21 is rotatably mounted on a diameter line intersecting at right angles with a line connecting the pins 19 and 20. A rack 22 is rotatably attached to the other end to form a crank 23. 24 is a pinion that meshes with the rack 22 of the crank 23; 25 is a pulley that is attached to the shaft of the pinion 24 and rotates in conjunction with the pinion 24; 26 is a tachometer generator that generates a speed signal proportional to the rotational speed of the pulley 25; 27 and 28 are electromagnetic solenoids. Normally, these electromagnetic solenoids 27 and 2
The pins 19 and 20 are retracted into the solenoid by 8 and the target cage is at point A or B of the lower sprocket.
When the point (point on the horizontal line passing through the center of the sprocket) is approached, the voltage to the electromagnetic solenoids 27, 28 is cut off and the pins 19, 20 jump out to the disk 14 side. 29,
30 is a spring that keeps the lever 21 normally horizontal, 3
Reference numerals 1 and 32 are support members that support the rack 22 in a horizontally slidable manner.

Hereinafter, the operation of the device of the present invention will be described with reference to FIGS.

For convenience of description, a case will now be described in which the target cage 6A has reached a predetermined point near the point B of the lower sprocket 2, so that the voltage to the electromagnetic solenoid 27 is cut off and the pin 19 jumps out to the disk 14 side. .

First, when the target cage 6A reaches the point B on the horizontal line passing through the center by the rotation of the lower sprocket 2 in the time direction, the notch 16A of the engaging member 17A provided on the chain 15 and the pin of the disc 18 are provided. And 19 are engaged. Next, when the lower sprocket 2 continues to rotate and the intended cage 6A moves toward the entrance / exit position, the engaging member 17A moves in accordance with the clockwise rotation of the chain wheel 14 while the engaging member 17A and the pin 19 remain engaged. Therefore, the disk 18 starts to rotate clockwise in synchronization with the chain wheel 14. Then,
Crank 2 consisting of disk 18, lever 21 and rack 22
3 converts the rotational movement of the disk 18 into the linear movement of the rack 22 so that the movement proportional to the horizontal speed of the cage 6A is transmitted via the pinion 24 and the pulley 25 to the tachometer generator 26.
To obtain a horizontal velocity signal of the cage 6A. The relationship between the position of the cage 6A, the state of the crank 23 and the output signal of the tachometer generator 26 when the cage 6A moves at a constant velocity in the tangential direction of the drive chain 3 is as shown in FIG.

In FIG. 5, assuming that the cage velocity is V, the horizontal velocity of the cage in the circular arc motion part is Vsinθ, and V
If is a constant value, various sine curves such as V ₁ sin θ, V ₂ sin θ, V ₃ sin θ, and V ₄ sin θ are drawn according to the rotation speed V as shown in FIG.
It is desirable that the horizontal velocity change is as follows (Vsin θ = −a θ + b, where a and b are constants). In order to obtain such an actual speed, if the horizontal speed of the cage can be directly detected as in the present invention, feedback control can be performed by matching the ideal speed command according to the cage position and the output signal of the tachometer generator 26. It is sufficient to control the horizontal speed of the cage in the arc motion part to an ideal speed that does not easily induce cage sway,
It is possible to prevent the cage from swinging in an excessive state such as during acceleration / deceleration.

In the above description, the case where the cage 6A is rotated clockwise has been described as an example. However, when the cage 6A is rotated counterclockwise, the other side of the engagement tool 17A attached to the chain 15 is opposite. The notch 16'A and the pin 20 of the disk 18 are engaged with each other, the disk 18 rotates counterclockwise, and the horizontal speed of the cage 6A is similarly taken out by the crank 23. The tachometer generator 26 Since it is obtained as an output signal of, it can be considered exactly as in the case of clockwise rotation. or,
If the target cage is different, the corresponding engaging member 16
.. are engaged with the pins 19 or 20 and the crank 23 operates in the same manner, and needless to say.

〔effect〕

As described above, according to the present invention, since the horizontal speed of the cage can be directly detected by using the crank mechanism, the horizontal speed of the cage during acceleration / deceleration, which has a great influence on the swing of the cage, can be easily controlled and the safety can be improved. You can improve the property.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a horizontal speed detecting device for a cage showing an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the structure of a vertical circulation type multi-level parking device. FIG. 3 is a view taken along the line II-II of FIG. 1, and FIG.
FIG. 5 is a diagram showing the relationship between the cage position, the crank state, and the output signal of the speed detector when the cage moves at a constant speed.
FIG. 6 is a diagram showing the movement of the cage in the circular arc motion unit, and FIG. 6 is a diagram showing the relationship between the horizontal and rotational cage velocities in the circular arc motion unit. 6 (6A, 6B, ...) ... Cage 1, 2 ... Sprocket 3 ... Drive chain 17 (17A, 17B) ... Engaging member 15 ... Chain 13, 14 ... Chain wheel 18 ... Disc 21 ... Lever 22 ... Rack 23 ... Crank 19, 20 ... Pin 24 ... Pinion 26 ... Tachometer generator

Claims (2)

[Scope of utility model registration request] 1. A car in which a plurality of cages for accommodating an automobile are suspended by a drive chain and circulated by a sprocket, and a chain having a plurality of engaging members corresponding to the plurality of cages is synchronized with the sprocket. One end of the lever is rotatably connected to the peripheral portion of the disk, the other end of the lever is rotatably connected to the rack, and the rack is movably supported in the longitudinal direction. The rack is provided with an engaged member that engages with an engaging member of the chain so as to project on a diameter line orthogonal to a line connecting one end of the lever and the center of the rack. A speed detecting device for a mechanical parking device, comprising a speed detector for detecting a moving speed of the rack via a pinion that meshes with. 2. The engaged member of the disk projects and engages with the engaging member of the chain when a target cage of the plurality of cages is present in the sprocket rotating portion. The speed detection device for a mechanical parking device according to claim 1 of the utility model registration claim.