JPH05311908A - Two-stage type parking device - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the burden on the descending operator while ensuring the safety when the movable platform descends. [Structure] When the lowering operation button PB1 is pressed once, the solenoid valve 47 is maintained in the ON state for about 17 seconds, and an automatic operation circuit having a timer circuit for continuously lowering the piston rod 27b (movable table) to a predetermined position is provided. I have it. When the timer circuit expires, a manual operation circuit is provided for switching the inward operation to the inching operation by turning on the solenoid valve 47 only while pressing the operation button PB1 for descending.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-stage parking system for parking a vehicle in an upper and lower tier by means of a movable base which can be raised and lowered.

[0002]

2. Description of the Related Art Conventionally, various two-stage parking devices that make effective use of parking spaces have been provided, and an example thereof is disclosed in Japanese Utility Model Publication No. 58-34195. ..

In brief, this apparatus is provided with a descending electric circuit for raising and lowering a vehicle-mounted pallet and an ascending electric circuit, and is provided with a first detector for detecting the presence of a vehicle or the like in a lower parking space. In addition, a first contact which is opened based on the detection signal of the first detector and stops the descending of the pallet is provided in the descending electric circuit. Further, a second detector is provided which detects that the pallet has descended in the vicinity of the upper limit of the detection range of the first detector and holds the detected state when the pallet exists below the detection position. Has been. Further, a second contact, which is closed based on the detection signal of the second detector and continues the downward movement of the pallet, is connected in parallel to the first contact.

Therefore, in order to lower the pallet at the upper position, the driver or the like continues to press the lowering push button, and while the pallet descends to the detection position of the second detector, obstacles such as children are placed in the lower parking space. If something goes in, the pallet will stop automatically. This can prevent an accident from occurring and improve safety. Also,
If the push button switch for lowering is kept pressed after stopping the pallet, the pallet can be lowered again via the second detector.

[0005]

However, in the above-mentioned conventional two-stage parking apparatus, the descending electric circuit is designed to be manually operated, that is, always inching. Therefore, in order to lower the pallet in the raised position to the lowest position, the driver or the like must continue to push the lowering operation button as described above. As a result, the operator must maintain the same posture while confirming safety until the pallet reaches the lowest position, which makes the lowering operation troublesome.

[0006]

SUMMARY OF THE INVENTION The present invention has been devised in view of the actual situation of the above-mentioned conventional device, and has a movable base for vehicles which has a parking space in the upper and lower stages and which can be moved up and down along a column. A two-stage parking apparatus comprising: a driving means for moving the movable table up and down; and a control means for outputting a control signal to the driving means according to the vertical position of the movable table, for lowering the control means The electric circuit was provided with an automatic operation circuit for continuously lowering the section from the raised position to the predetermined lowered position of the movable table, and a manual operation circuit for incliningly lowered the section from the predetermined lowered position to the most lowered position. It is characterized by

[0007]

According to the present invention having the above construction, in order to lower the movable table in the raised position, the lowering push button is pressed once and released, and the driving means is continuously driven by the automatic driving circuit of the lowering electric circuit. Move the movable table continuously. Then, when it reaches such a predetermined descending position where there is little danger due to obstacles and the like, the descending movement is temporarily stopped, and at the same time, the automatic operation circuit is switched to the inching operation circuit. Therefore, thereafter, the movable table can be moved downward only while the operator continues to press the lowering operation button while confirming safety and the like.

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of a two-stage parking apparatus according to the present invention, in which 1 is a pair of left and right support members 2 and 2 made of H steel material buried underground and the support member 2. , A base composed of a substrate 3 fixed to the upper surface of the rear end of 2,
Reference numerals 4 and 4 denote a pair of left and right columns vertically installed at one end of the support members 2 and 5, 5 a movable base that moves up and down along the columns 4 and 4, and 6 means for driving the movable base 5 to move up and down. Reference numeral 7 denotes a lock means for restricting a predetermined ascending movement position of the movable table 5, and the operation of the lock means 7 and the drive means 6 is controlled by a controller 8 forming a part of the control means. Is becoming

The columns 4 and 4 have a substantially U-shaped cross section, and are flat front end walls 4a, 4a and both side walls 4b, 4c bent at right angles from both side edges of the front end walls 4a, 4a. 4b,
4c, and guide rails 15 and 16 are provided at the centers of the both side walls 4b and 4c along the vertical direction. Further, openings 17 and 18 are formed at predetermined positions above the front end walls 4a and 4a. Further, a horizontal frame member 19 that connects the columns 4 and 4 is fixedly provided on the upper ends of the columns 4 and 4. The horizontal frame member 19 is formed in a square cross section,
Through holes 20, 20 are formed in the lower wall portions located on the columns 4, 4.

Further, as shown in FIG. 1, the one-sided support column 4 is provided with an upper limit position detection switch 9 for detecting the maximum raised position of the movable table 5, and at the lower part of the movable table 5. A lower limit position detection switch 10 for detecting the maximum lowered position is provided. Further, at a predetermined position below the upper limit position detection switch 9, the movable table 5 is provided with the lock means 7.
Fixed position detection switch 1 for detecting fixed position locked by
1 is provided, and a storage detection switch 12 and a projection detection switch 13 that detect a storage state and a projection state of lock levers 56, 56 of the lock means 7 described later are provided.

The movable table 5 includes the guide rails 15,
Guide members 21 and 21 guided up and down by 16 and a fork member 2 fixed to the front ends of the guide members 21 and 21.
2, 22 and pallet members mounted and fixed on the fork members 22, 22. Each guide member 21 is formed in a substantially U-shape along the front end wall 4a and both side walls 4b, 4c of each strut 4, and each guide rail 1 on both sides.
Each side wall 4 is located at a diagonal position between 5 and 16 respectively.
b, 4c, 4b, 4c each pair of rollers 2 rolling on the upper surface
4, 25 are provided. Each fork member 22 has an arm 22b horizontally protruding from the lower front end of a box-shaped base 22a fixed to the front end of each guide member 21.
Is equipped with. The pallet member 23 includes the arms 22b,
An in-vehicle plate member 23b is fixed to the center of a U-shaped frame member 23a mounted and fixed on the upper surface of 22b. Further, the two guide members 21 and 21 are connected by a plate-like connecting member 26 so as to move synchronously.

The drive means 6 is a base 1 between the columns 4 and 4.
A hydraulic cylinder 27 which is vertically installed upright, a drive chain 28 which operates the guide member 16 on the left side in the figure by the hydraulic cylinder 27, a driven chain 29 which operates the guide member 21 on the right side, and the hydraulic cylinder 27. A hydraulic control mechanism 30 that supplies and discharges hydraulic pressure is mainly configured.

The hydraulic cylinder 27 has a cylinder portion 27.
The lower end of a is fixed on the base 1 via a bracket 40 having a U-shape, while the U-shaped retainer 31 is attached to the tip of the piston rod 27b protruding from the upper end of the cylinder 27a. There is. Also, the retainer 31
Rotatably supports a drive pulley-like drive sprocket 32 via a support shaft.

One end 28a of the drive chain 28 is connected to the upper surface of the bracket 40 via a connector, and the other end 28b rises upward and is wound around the drive sprocket 32 and hangs down. , Other end 28
b is connected to a protrusion 34 that is swingably provided inside the left guide member 21 via a spring 33. On the other hand, one end 29a of the driven chain 29 is connected to the lower end wall of the left guide member 21, and the driven chain 29 hangs down from the one end 29a along the left support column 4 to form the bracket 4
It is wound around an idler sprocket 35 pivotally supported in 0, passes through the inside of a bracket 40, and is further wound around an idler sprocket 36 provided on the base 1 and rises upward.
It is wound around an idler sprocket 37 provided on the lower surface of the horizontal frame member 19. Then, the other end portion 29b that hangs from here is provided on the inner side portion of the right guide member 21 with the spring 3
It is connected to the projecting portion 39, which is swingably provided via 8.

As shown in FIG. 2, the hydraulic control mechanism 30 has one end connected to an oil passage 41 connected to the pressure receiving chamber 27c in the cylinder 27a and the other end connected to the oil passage 41.
An oil pump 43 for sucking the oil in the oil pan 42 and pumping it into the pressure receiving chamber 27c and a three-phase pump motor 44
A drain passage 46 connected to the downstream side of the check valve 45 in the oil passage 41 to discharge the oil in the pressure receiving chamber 27c into the oil pan 42; a solenoid valve 47 for opening and closing the drain passage 46; The oil pump 4 is provided in a relief passage 48 provided between the pump 43 and the check valve 45.
3 and a pressure adjusting valve 49 for adjusting the discharge pressure to a constant value. Then, as the pump motor 44 is driven, the oil pump 43 pumps hydraulic pressure into the pressure receiving chamber 27c to raise the piston rod 27b, while the solenoid valve 47 is opened to discharge the hydraulic pressure inside the pressure receiving chamber 27c from the drain passage 46. Then, the piston rod 27b is lowered.

The locking means 7 is an electromagnetic actuator 50 fixed in the lateral frame member 19 as shown in FIG.
A slider 51 that is connected to a drive shaft on the front end side of the electromagnetic actuator 50 and is slidable back and forth;
A link arm 53 is rotatably provided on the rear end side of the electromagnetic actuator 50 and is connected to the front end of the slider 51 via a connecting link 52, and is provided inside the upper ends of the columns 4 and 4, and the slider 51 is provided. And the wire 5 inserted into the through holes 20 and 20 with the operation of the connecting link 52.
Opening portions 17, 18 of the front end walls 4a, 4a through 4, 55
It is mainly composed of a pair of lock levers 56, 56 protruding and retracting from.

In the controller 8, as shown in FIG. 3, a built-in microcomputer has an ascending electric circuit 57 based on an information signal from each of the detection switches 9 to 13.
And the hydraulic control mechanism 30 via the lowering electric circuit 58.
A control signal (control current) is output to the pump motor 44, the electromagnetic valve 47, and the electromagnetic actuator 50. The controller 8 stops the operation of the pump motor 44 and the electromagnetic valve 47 based on the disconnection information signal from the chain disconnection detection switch 14 provided on the board 3.

The lowering electric circuit 58 is provided with an automatic operation circuit 59 for automatically and continuously lowering the movable table 5 from a raised position to an intermediate lowered position, and a section from the intermediate lowered position to the most lowered position. A manual operation circuit 60 for inclining and descending is provided.

The automatic driving circuit 59 is designed to stop the downward movement of the movable table 5 at a predetermined lowered position (for example, set to the vehicle height of a passenger car) by a timer circuit.

FIG. 5 shows an electric circuit for operating the pump motor 44, the electromagnetic valve 47 and the electromagnetic actuator 50.
R, S, and T are commercial power supplies, MC1 is a main relay of the pump motor 44, TH1 is a thermal switch, and the electromagnetic actuator 50 has a transformer 61 of 200 V.
The rectifier 62 converts the alternating current whose voltage is reduced from 1 to 14V.
The DC current converted by is input through the control relays 63, 64 ... And the power supply lines 65, 65. Further, the direct current is input to the solenoid valve 47 through the diode 66, the relay 67, and the power supply lines 68, 68. Further, this current is input to the illumination lamp 69. In the figure, 70 is a commercial power source R,
It is a converter for converting S into a DC 24V current, and this current is input to the ascending / descending lamp and the abnormality detection lamp through the ascending operation switch CS1 and the relay 71.
R2 and SO are AC power supply lines.

The operation of raising and lowering the movable table 5 by the controller 8 will be described below with reference to the time chart of FIG.

First, in order to hold the movable table 5 at the lowest position in the ascending fixed position, the ascending operation switch CS1 with a key is used.
When turning the power one step to the right to turn on the power, the lower limit position detection switch 10 and the storage detection switch 12 are turned on, the chain break detection switch 14 is turned off, the thermal switch of the oil pump 43 is turned off, and the various switches 9 to 14 are turned on. The elevator complete lamp lights up on the condition that it is normal.

Next, when the raising operation switch CS1 is further rotated to the right to bring it to the display position of "up", that is, turned on, the pump electric motor 57 is energized by the electric raising circuit 57 to operate the oil pump 43, while the electromagnetic pump 43 is operated. The valve 47 closes the drain passage 46 by maintaining the demagnetized state of the electromagnetic coil. Therefore, the oil pressure pumped from the oil pump 43 is supplied into the pressure receiving chamber 27c and the piston rod 2
7b is raised to drive the chain 28 and the driven chain 2
The movable table 5 moves upward via 9

When the movable table 5 reaches the maximum raised position, the upper limit position detection switch 9 is turned on, and a timer (not shown) is turned on after 0.2 seconds based on this signal. As a result, the controller 8 is energized by the electromagnetic actuator 50 to slide the slider 51 in one direction, and at the same time, the link arm 53 is moved via the connecting link 52.
Rotate in one direction. Therefore, the wires 54, 55
Is pulled to lock the lock levers 56, 56 into the opening 17,
Maximum protrusion from 18. When the protrusion detection switch 13 that has detected the maximum protrusion state is turned on, the electromagnetic actuator 50 is de-energized, the pump motor 44 is de-energized, and the ascending movement of the movable table 5 is stopped. ..

When the protrusion detection switch 13 is turned on, the timer is turned on after 0.2 seconds, the solenoid valve 47 is energized, and the drain passage 46 is opened. Therefore, the movable table 5 slowly moves down as the piston rod 27b moves down, the lowering movement is stopped at the upper ends of the lock levers 56, 56, and the movable table 5 is stably and reliably locked at this position. At this point, the fixed position detection switch 11 is turned on,
Based on this signal, the solenoid valve 47 is de-energized, and the lift complete lamp is turned on.

Next, in order to lower the movable table 5, the lowering operation key is rotated to the right and the power is turned on, and the lifting / lowering completion lamp is turned on under the following conditions. That is, the fixed position detection switch 11 and the protrusion detection switch 13 are ON, the chain break detection switch 14 is OFF, a detection switch (not shown) for detecting an obstacle or a vehicle in the lower parking space is OFF, a thermal switch is OFF, and various switches. This is the case where 9 to 14 are normal.

Next, when the lowering operation button PB1 is pressed once to release the pressing, the pump motor 44 is energized to operate the oil pump 43, and the movable table 5 once rises to reach the maximum raised position. Then, the upper limit position detection switch 9
The timer is turned on and the timer turns on after 0.2 seconds. By this signal, the electromagnetic actuator 50 is energized to slide and rotate the slider 51 and the link arm 53 in the other direction. Therefore, each lock lever 56, 5
6 retracts from the openings 17, 18 into the stanchion 4 via the wires 54, 55. Such lock levers 56, 56
Storage detection switch 12 that detects the complete storage state of
Then, the pump motor 44 and the electromagnetic actuator 5
The energization of 0 is cut off, the movable table 5 is temporarily stopped at the highest position, the timer is turned on after 0.2 seconds, the solenoid valve 47 is energized, and the drain passage 46 is opened. Therefore, the movable table 5 automatically continuously descends from the highest position at a slow speed. Here, since the lock levers 56, 56 are already housed in the columns 4, 4, they do not hinder the smooth downward movement of the movable table 5.

Then, the storage detection switch 12 is turned on.
Then, the above-mentioned timer circuit that was in the OFF state becomes 1
It is turned on after 7 seconds, and based on this signal, the solenoid valve 47 is de-energized and the drain passage 46 is closed. That is, the movable table 5 descends from the most raised position (point A in FIG. 4) for about 17 seconds and stops at a predetermined intermediate lowered position (point B in FIG. 4).

After that, by switching to the manual lowering circuit,
Each time the lowering operation button PB1 is pressed, the solenoid valve 47 is energized to start the inching operation. That is, the movable table 5 can be moved downward only while the operator continues to press the lowering operation button while confirming the safety in the lower parking space. When the movable table 5 reaches the lowest position, the lower limit position detection switch 10 is turned on, and then another timer is turned on after 1 second. Based on this signal, the solenoid valve 47 is de-energized, and the lift complete lamp is turned on.

Thus, in this embodiment, the locking means 7
The movable table 5 in the raised position can be held stably and surely by the above, and in order to lower the movable table 5 from the raised position, the lowering operation button PB1 is only pressed once, and the predetermined intermediate descending position is reached. Since it continuously descends up to, there is no need to continue pushing as in the past. Therefore, the burden on the operator can be greatly reduced.

Moreover, the movable table 5 is temporarily stopped at a predetermined intermediate descending position, and thereafter, the inching movement is switched to, so that the safety during the descending movement is ensured.

Further, in this embodiment, since the relatively inexpensive timer circuit is used for lowering the movable table 5 to the predetermined intermediate lowering position, the manufacturing cost can be reduced.

The present invention is not limited to the configuration of the above-described embodiment. For example, an intermediate position detection switch is used instead of the timer circuit, and this intermediate position detection switch is O.
It is also possible to automatically and continuously lower until N. Also, the drive means 6 is not a hydraulic cylinder,
It is also possible to use a drive motor, a reduction gear mechanism, or the like that can rotate normally and reversely.

[0035]

As is apparent from the above description, according to the two-stage parking apparatus of the present invention, the movable platform is continuously lowered by the automatic driving circuit of the control means from the raised position to the predetermined lowered position. Therefore, it is not necessary to continue to push down the lowering operation switch as in the prior art, and continuous lowering movement of the movable table can be obtained by only operating and releasing the lowering operation switch once. Therefore, the burden on the operator is reduced and the utility is high.

In addition, since the movable table can be moved downward from the predetermined lowered position by the manual operation circuit, it can be moved down while confirming the safety.

As a result, both rapid continuous downward movement and safety can be satisfied.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a two-stage parking apparatus according to the present invention.

FIG. 2 is a schematic view showing a hydraulic control mechanism used in this embodiment.

FIG. 3 is a control block diagram of the present embodiment.

FIG. 4 is a timing chart of the control action of the controller according to the present embodiment.

FIG. 5 is an electric circuit diagram of the present embodiment.

[Explanation of symbols]

4 ... Posts, 5 ... Movable base, 6 ... Driving means, 8 ... Controller (control means), 9-13 ... Position detection switch, 57 ...
Ascending electric circuit, 58 ... descending electric circuit, 59 ... automatic operation circuit, 60 ... manual operation circuit.

Claims (1)

[Claims] 1. An on-vehicle movable base having parking spaces at upper and lower stages and capable of moving up and down along a column, drive means for moving the movable base up and down, and an elevating position of the movable base on the drive means. In a two-stage parking apparatus having a control means for outputting a control signal in accordance with the above, an automatic operation circuit for continuously lowering a section from a raised position of a movable table to a predetermined lowered position in a lowering electric circuit of the control means. And a manual operation circuit for inclining the section from the predetermined lowered position to the most lowered position.