JP3358025B2 - Mechanical parking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical parking device for transferring a vehicle to a parking room by relaying a traveling vehicle, and more particularly, to fixing a vehicle placed on a transverse conveyor of the traveling vehicle. To a wheel stopper device.

[0002]

2. Description of the Related Art Today, various types of mechanical parking devices have been put into practical use. However, those using a traveling vehicle for delivery of vehicles between a parking room and an entrance / exit berth are excellent in operation efficiency and have many storage facilities. It is ideal for parking facilities that require a large number of vehicles.
Here, the traveling cart of the mechanical parking device will be described with reference to FIG. In the following description, the left direction in FIG. 9 is the front of the traveling vehicle, and the right direction is the rear of the traveling vehicle. First,
As shown in FIG. 9, the traveling vehicle 1 freely moves on a traveling rail 3 laid on a traveling path 2 by traveling wheels 5 driven by a motor 4. It should be noted that a plurality of parking rooms (not shown) are arranged in the left-right direction in FIG.

[0003] The traveling carriage 1 and the parking room are respectively provided with a front-wheel lateral conveyor 7 (hereinafter, also referred to as a front conveyor) and a rear-wheel lateral conveyor 8 (hereinafter, also referred to as a rear conveyor).
And are arranged. Then, the traveling vehicle 1 is stopped beside the target parking room, and the front conveyor 7 and the rear conveyor 8 of both the traveling vehicle 1 and the parking room are synchronously rotated, so that the vehicles 6 can be mutually transferred. . The front conveyor 7 is provided with a wheel stopper device 9 to prevent the vehicle 6 mounted on the traveling vehicle 1 from collapsing while the traveling vehicle 1 is moving. The wheel stopper device 9 restricts the movement of the vehicle in the front-rear direction by contacting a front wheel 10 of the vehicle 6 with a front and rear wheel stop or the like. Here, an example of the wheel stopper device will be described with reference to FIGS. 10 and 11. FIG.

The wheel stopper device 9 is provided with a holding member 11 (see FIG.
11) is operated and guided forward and backward by a guide shaft 12 orthogonal to this. In the illustrated form, a male screw formed on the guide shaft 12 and a female screw formed on the support member 13 on the lower surface of the sandwiching member 11 are engaged, and the guide shaft 12 is rotated by a motor 14 so as to be rotated. The holding member 11 can be moved back and forth. Further, by providing a plurality of guide shafts 12, support members 13, and the like in parallel, the reliability of operation is increased and the holding force is improved.

Further, a tape-shaped pressure sensing switch 16 is provided on the contact surface of the holding member 11 as a limiter for stopping the movement of the holding member 11 when the holding member 11 comes into contact with the front wheel 10. Further, as the limiter, a transmission type electric light switch 17 as shown in FIG. 11 may be used. In any case, the state in which the holding member 11 abuts on the front wheel 15 or the state immediately before the abutment is detected, and the motor 14
Is to be stopped. As the above conventional examples, details thereof are disclosed in Japanese Utility Model Publication No. 6-40284, Japanese Patent Application Laid-Open No. 2-210171, and the like.

[0006]

However, the wheel stopper device having the above configuration has the following problems. First, in the structure in which the holding member 11 is operated and guided by the thread groove formed on the guide shaft 12, high precision of each component and assembling accuracy are required, and the number of components constituting the driving device increases. There is room for improvement in terms of manufacturing cost and maintainability. Further, the tape pressure sensing switch 16 and the transmission type photoelectric switch 17 are used as a limiter for stopping the movement of the holding member 11, but their performance may be reduced due to impact, dirt, and the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to simplify the structure of a wheel stopper device of a traverse conveyor mounted on a traveling vehicle, to reduce manufacturing costs and maintainability. The goal is to improve

[0008]

A mechanical parking device according to the present invention for solving the above-mentioned problems is provided with a plurality of parking rooms along a traveling path of a traveling vehicle, wherein the traveling vehicle and each of the parking spaces are arranged. In each of the compartments, in a mechanical parking device provided with a traverse conveyor for transferring vehicles between each other, at least one of the position or length of one end portion above and behind the traverse conveyor of the traveling cart. One arm which is freely changed and used is supported in the vehicle width direction of the traveling bogie so as to be horizontally rotatable about the one end as a center of rotation, and a portion at a predetermined distance from the one end is provided on the traveling bogie. The actuator is pivotally supported by an actuator supported by the frame.

According to the above configuration, the vehicle is fixed by bringing one arm extending in the vehicle width direction into contact with at least one of the left and right wheels of the vehicle. The rotation center (one end of the arm) when the one arm is driven to rotate.
Since a point of action of the driving force from the actuator (a part at a predetermined distance from the one end) is provided at a position different from the above, concentration of a load on a specific part of the arm can be prevented. Moreover, the one arm is used to fix the vehicle placed on the traverse conveyor of the traveling bogie by freely changing and using at least one of the position and the length of the one end which is the center of rotation. The most suitable configuration can be adopted as the wheel stopper device.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, the same or corresponding parts as in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. 1, 2, and 4 to 8 referred to in the following description, the upper side is the front of the traveling vehicle, and the lower side is the rear of the traveling vehicle.

First, a wheel stopper device according to a first embodiment of the present invention will be described with reference to FIGS.
Here, the same or corresponding portions as those of the second embodiment of the present invention are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows only a main part of the wheel stopper device according to the first embodiment. The transverse conveyor 18 is fixed to a frame of a traveling vehicle (not shown), similarly to the conventional example of FIG. Arms 31 and 32 extending in the vehicle width direction of the traveling vehicle are provided one by one before and after the lateral feed conveyor 18. In the illustrated example, an arm 31 is provided in front of the traverse conveyor 18 to extend from the vehicle width center (indicated by the line C) to the left end of the traveling bogie, and one end 31a thereof is connected to the traveling bogie frame (not shown). Support member 33 fixed to)
, So that it can be rotated horizontally. The other end 31b of the arm 31 is located near the left end of the lateral feed conveyor 18.
An arm 32 extending toward the right end of the center of the vehicle width of the traveling vehicle is provided at the rear of the lateral feed conveyor 18, and one end 32 a of the arm 32 is supported by a support member 33 so as to be horizontally rotatable. The other end 32b of the arm 32 is located near the right end of the lateral feed conveyor 18. The shapes of the arms 19 and 20 are similar to the arms of the stopper device disclosed by the present applicant in Japanese Patent Application Laid-Open No. H8-232494, in a direction opposite to the direction in which the transverse feed conveyor 18 is arranged with respect to each arm. And are symmetric to each other.

Further, since each arm is located above the upper surface of the horizontal feed conveyor 18, each arm can freely rotate horizontally on the conveyor 18. Furthermore, each arm is provided with brackets 34 and 35 having the same shape. The projection 34a of the bracket 34 provided on the arm 31 is pivotally supported by an actuator 36 rotatably supported by the projection 33a of the support member 33. Similarly, arm
The projection 35a of the bracket 35 provided on the
Actuator rotatably supported by 33 projections 33a
It is pivoting at 37.

FIG. 1 shows the released state of the arm according to the first embodiment. At this time, the actuator
Both 36 and 37 are in their most shortened state. The most protruding portion of each arm with respect to the horizontal conveyor 18 is retracted outside the horizontal conveyor 18. The distal ends 31b and 32b of the arms 31 and 32 are in contact with stoppers 30 fixed to the frame of the traveling vehicle. Incidentally, the stopper 30 is provided as a positioning means for retracting each arm to the outside of the lateral feed conveyor 18, and if the purpose can be achieved, it is not limited to the above position. Absent. In addition, it is also possible to freely change the settings of the rotation center positions of the arms 31 and 32, the length of the arms, and the like to obtain a more optimal configuration.

FIG. 2 shows a state in which the vehicle is mounted on the traveling carriage, that is, a state in which the wheels 10 are mounted on the traverse conveyor 18. (Note that in FIG. 2, the stopper 30
Are not shown. 1) When exchanging the vehicle with the traveling trolley, first, the arms 31 and 32 are evacuated to the outside of the traverse conveyor 18 as shown in FIG. After the vehicle stops, the actuators 36 and 37 are extended to bring the arm 31 into contact with the wheel 10a and the arm 32 with the wheel 10b. The arm 31 abutting on the wheel 10a prevents the vehicle from shifting forward, and the arm 32 abutting on the wheel 10b prevents the vehicle from shifting rearward.

The force with which the arms 31 and 32 abut each wheel and the force with which the stopper 30 abuts can be controlled by providing a limiter in a drive circuit of the actuators 36 and 37 (a hydraulic circuit in the case of a hydraulic actuator). Accurate control can be achieved by grasping the operation amount of the arm using a proximity sensor or the like. By the way, if the vehicle is bent and mounted on the center axis of the traveling vehicle, that is, even if the wheel 10 is mounted on the traversing conveyor 18 in a biased manner, the vehicle is within the operating range of each actuator 36, 37. The arms 31 and 32 abut against the wheels 10a and 10b to prevent the vehicle from shifting.

FIG. 3 schematically shows a hydraulic circuit used in the first embodiment of the present invention. A hydraulic unit 41 as a pressure supply source includes a motor (three-phase AC motor) 42,
It has a pump 43. The pressure fluid obtained by the hydraulic unit 41 is supplied to a check valve via an electromagnetic valve 44 and a pressure switch 45.
Actuators 36, 37 passing through 46 and being hydraulic cylinders
Supplied to The pressure switch 45 detects the pressure in the cylinder (that is, the contact pressure of the arms 31 and 32), and measures the switching timing of the solenoid valve 44. Check valve 46 is
It is provided to prevent the working fluid from flowing out of the actuators 36 and 37 and to hold the piston of the actuator in a fixed position.

According to this circuit configuration, there is one hydraulic pressure source (hydraulic unit 41), and the actuator 36,
Since the 37s are connected in parallel, the load on each cylinder can be equalized irrespective of the operating state of each cylinder. By switching the solenoid valve 44, both actuators can be controlled collectively. Therefore,
The operation start timings of the actuators 36 and 37 can be made simultaneously. Of course, it is also possible to operate the actuators 36 and 37 at different timings by connecting separate electromagnetic valves to each of the actuators 36 and 37 or adding a delay circuit or the like depending on the use conditions.

The operation and effect obtained from the first embodiment of the present invention are as follows. In the present embodiment, one ends 31a, 32a, which are the centers of rotation of the arms 31, 32, are separated from the projections 34a, 35a, which are the points of application of the driving force to the respective arms. It is possible to prevent the load from being concentrated on a specific location, to improve the durability of the arm, and to reduce the size and weight. The vehicle can be fixed by bringing the arms 31, 32 into contact with at least one of the left and right wheels 10a, 10b of the vehicle. Since only one arm is arranged before and after the lateral feed conveyor 18, the structure can be simplified. In addition, all maintenance can be performed from the upper surface of the traveling vehicle, so that maintainability can be greatly improved.

As an actuator used in the first embodiment of the present invention, an electric actuator such as a push chain 38 (manufactured by Daido Kogyo Co., Ltd.) shown in FIG. Can also be used. The push chain 38 in this example is
If the chain pieces are pressed while in series,
The pieces are connected to each other to receive the load, and are integrated to transmit the pressing force. The pressing direction for receiving the pressing force is determined by the rail-shaped chain guide 39, and the push-pull operation of the push chain 38 is performed by the driving sprocket 40. As described above, when the electric actuator is used, it is possible to unify the driving source when another actuator mounted on the traveling vehicle is electrically driven. Also,
Generally, since the size of the actuator is smaller than that of the cylinder type actuator, the degree of freedom of layout on the traveling vehicle can be increased.

Next, a description will be given of a wheel stopper device according to a second embodiment of the present invention. Here, the same or corresponding portions as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 5 shows only a main part of the wheel stopper device according to the second embodiment. The transverse conveyor 18 is fixed to a frame of a traveling vehicle (not shown), similarly to the conventional example of FIG. A pair of arms 19 and 20 are provided in front of the traverse conveyor 18 so as to extend from the vicinity of the center of the vehicle (shown by the line C) to the left and right ends. The shape of the arms 19 and 20 is also described in
Similarly to the arms of the stopper device disclosed in Japanese Patent Publication No. 232494, the arms are curved in a “C” shape in a direction opposite to the direction in which the traversing conveyor 18 is arranged with respect to each arm, and are symmetrical to each other. Similarly, behind the traverse conveyor 18,
A pair of arms 21 and 22 are provided extending from the center of the traveling vehicle (shown by line C) to the left and right ends. The shapes of the arms 21 and 22 are the same as those of the arms 19 and 20.
That is, the arms 19, 21, 21, 22 are all common components.

Each arm is located above the upper surface of the traverse conveyor 18 and the end of each arm on the vehicle width center side.
19a, 20a and 21a, 22a are rotatably supported by a support member 23 fixed to the frame of the traveling vehicle. Therefore, each arm can freely rotate horizontally on the conveyor 18. Further, each arm is provided with a bracket 24, 25, 26, 27 having the same shape. The projections 24a and 25a of the brackets 24 and 25 provided on the arms 19 and 20 are pivotally supported by one actuator 28 (for example, a hydraulic cylinder or the like) that expands and contracts. The actuator 28 is supported only by pivotally connecting the cylinder case and the piston rod to the projections 24a, 25a, and the actuator 28 itself slightly moves together with the arms 19, 20 during the operation described later.

The distance from the vehicle width center end 19a of the arm 19 to the protrusion 24a of the bracket 24 is the same as the distance from the vehicle width center end 20a of the arm 20 to the protrusion 25a of the bracket 25. It is. Similarly, for the arms 21 and 22,
The projections 26a, 27a of the brackets 26, 27 are pivotally supported by one actuator 29 that expands and contracts. further,
The distance from the vehicle width center end 21a of the arm 21 to the protrusion 26a of the bracket 26 is the same as the distance from the vehicle width center end 22a of the arm 22 to the protrusion 27a of the bracket 27.
When the actuators 28 and 29 are hydraulic cylinders, the configuration of the hydraulic circuit is the same as that of the first embodiment (FIG. 3).
Reference).

Here, the operation of the wheel stopper device having the above configuration will be described. FIG. 5 shows the released state of the stopper. At this time, the actuators 28 and 29 are in the most shortened state, and the distal ends 19 of the arms 19, 20, 21, and 22 are at the minimum.
The b, 20b, 21b, and 22b are in contact with the stopper 30 fixed to the frame of the traveling vehicle. In addition, a portion of the arm that projects most out of the horizontal conveyor 18 due to the V-shape of the arm is retracted outside the horizontal conveyor 18.

FIG. 6 shows a state in which the actuators 28 and 29 are fully extended (full stroke state).
At this time, the interval between the protrusions 24a, 25a of the bracket is widened by the actuator 28, and the arms 19, 20 rotate around the vehicle width center side ends 19a, 20a. Therefore, the arm tip portions 19b and 20b move toward the center in the front-rear direction of the lateral feed conveyor 18. Similarly, the arms 21 and 22 rotate about the vehicle width center side ends 21a and 22a, and the arm ends 21b and 22b.
Moves toward the center of the horizontal feed conveyor 18. Then, the distal ends 19b and 22b of the arms 19 and 22 and the distal ends 20b and 21b of the arms 20 and 21 approach each other to a position where they substantially abut. In FIG. 6 (FIGS. 7 and 8), the illustration of the stopper 30 is omitted.

Further, each arm is again moved to the horizontal conveyor 18.
When the actuators 28 and 29 are shortened so as to be retracted out of the vehicle, each arm is moved to the vehicle width center side end portions 19a, 20a and 21.
a and 22a. And the arm tip 19
When the b, 20b, 21b, and 22b come into contact with the stopper 30 (FIG. 5) fixed to the frame of the traveling vehicle, the rotation is stopped. At this time, for example, when one of the pair of arms 19 and 20 comes into contact with the stopper 30 first, the arm that has come into contact with the stopper 30 is fixed at that position, and
The stretching force of 28 acts only on the other arm.
When the other arm also comes into contact with the stopper 30, the retreating operation of the arm is completed. Actuator 28
Is the most shortened state at this point. This means
The same applies to the pair of arms 21 and 22.

FIG. 7 shows a state in which the vehicle is mounted on the traveling carriage, that is, a state in which the wheels 10 are mounted on the traverse conveyor 18. When the vehicle is transferred to and from the traveling trolley, the arms 19, 20, 21, 22 as shown in FIG.
Is evacuated outside the horizontal conveyor 18. And
After the vehicle stops, the actuators 28 and 29 are extended, and the arms 19 and 22 are attached to the wheels 10a as shown in FIG.
Arms 20 and 21 are brought into contact with b.

FIG. 8 shows a state in which the vehicle is bent and mounted on the center axis of the traveling vehicle, that is, a state in which the wheels 10 are mounted on the traverse conveyor 18 with a bias. In the illustrated state, when the actuator 28 is extended and the arms 19 and 20 are rotated from the released state of the stopper in FIG. 5, the arm 20 first contacts the wheel 10b. Then arm 20
In this case, further rotation is prevented by the wheel 10b, and the projection 25a of the bracket attached to the arm 20 is fixed at this position. Therefore, the actuator 28 extends from the fixed position of the projection 25 a as a base point, and all the driving force of the actuator 28 is applied to the projection 24 a of the bracket attached to the arm 19. Then, the arm 19 continues to rotate until it continuously contacts the wheel 10a, and the arm 19 also contacts the wheel 10a. Thereafter, the driving force of the actuator 28 is equally applied to both the projections 24a and 25a, and when the pressure detected from the actuator 28 reaches a predetermined value, the pressurization of the actuator 28 is stopped. The operation of the arms 21 and 22 is completely the same.
Even if the vehicle 6 is stopped parallel to the center axis of the traveling trolley, even if only the wheels 10 are inclined (the steering wheel is released), each arm appropriately abuts against the wheels.

When the arms are stored from a state in which the rotation angles of the pair of arms are different as shown in FIG. 8, the operation is as follows. For example, focusing on arms 19 and 20, actuators
By shortening the arm 28, the arms 19 and 20 start rotating at the same time, and the arm 20 having a smaller rotation angle from the storage position comes into contact with the stopper 30 (FIG. 5) first. Then
Further rotation of the arm 20 is prevented by the stopper 30, and the protrusion 25 of the bracket attached to the arm 20.
a is fixed in position. Therefore, actuator 28
Performs a shortening operation with the projection 25a as a base point, and all the driving force of the actuator 28 is applied to the projection 24a of the bracket attached to the arm 19. Therefore, the arm
19 continues to rotate until it abuts the stopper 30. After the arm 19 comes into contact with the stopper 30,
The driving force of the actuator 28 is equally applied to both the projections 24a and 25a, and when the contact pressure of each arm reaches a predetermined value (or that the storage of the arms 19 and 20 is completed by a proximity sensor or the like). Detection), and the operation of the actuator 28 is stopped. The operation of the arms 21 and 22 is completely the same.

The operation and effect obtained from the second embodiment of the present invention having the above configuration are as follows. First, a pair of arms 19, 20 and 21, 22 are pivotally supported by one actuator 28, 29 which expands and contracts, so that the contact position of each arm with respect to the wheel and the positioning to the storage position are determined by the actuator 28. , 29 can be accurately performed only by simple expansion / contraction control. Further, even when the wheels 10 stop at an angle on the traversing conveyor 18, each arm is moved only by the extension operation of the actuators 28 and 29.
a, 10b can be reliably brought into contact with and positioned. Therefore, the displacement prevention ability of the vehicle can always be exhibited stably regardless of the mounting state of the vehicle.

In addition, the vehicle width center ends 19a, 20a, 21a, 22a, which are the centers of rotation of the respective arms, are separated from the projections 24a, 25a, 26a, 27a, which are the points of application of the driving force to the respective arms. Therefore, it is possible to prevent the load from being concentrated on a specific portion of the arm, to improve the durability of the arm, and to reduce the size and weight of the arm. In addition, since each arm has a `` curve shape '' curved in a direction opposite to the direction in which the traverse conveyor 18 is arranged, the contact angle when each arm contacts the wheel 10 is made more parallel. By setting the angle to a close angle, the contact area can be increased. Therefore, the positioning of the wheel 10 can be performed more sufficiently. In particular, under conditions where excessive inertia acts on the vehicle mounted on the traveling trolley,
Since the left and right wheels of the vehicle are positioned, the wheel stopper device is more suitable than in the first embodiment.

[0033]

According to the present invention, the following effects are obtained. That is, according to the mechanical parking device of the present invention, it is possible to simplify the structure, reduce the manufacturing cost, and improve the maintainability. Further, it is possible to adopt an optimal configuration as a wheel stopper device for fixing a vehicle placed on the traverse conveyor of the traveling trolley.

[Brief description of the drawings]

FIG. 1 is a top view schematically showing a wheel stopper device of a mechanical parking device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a state where wheels are fixed in the wheel stopper device shown in FIG. 1;

FIG. 3 is a configuration diagram of a hydraulic circuit of the wheel stopper device shown in FIG.

FIG. 4 is a top view showing an application example of the wheel stopper device shown in FIG. 1 with a half omitted.

FIG. 5 is a top view schematically showing a wheel stopper device of a mechanical parking device according to a second embodiment of the present invention.

FIG. 6 is a schematic view showing an operation state of the wheel stopper device shown in FIG.

FIG. 7 is a schematic view showing a state where wheels are fixed in the wheel stopper device shown in FIG. 5;

FIG. 8 is a schematic view showing a state where the wheels are biased and mounted in the wheel stopper device shown in FIG. 5;

FIG. 9 is a schematic view showing a traveling vehicle for a mechanical parking device.

FIG. 10 is a schematic view showing a conventional wheel stopper device.

FIG. 11 is a perspective view showing the front wheel holding member of FIG. 10;

[Explanation of symbols]

 10 Wheel 10a Wheel 10b Wheel 18 Lateral feed conveyor 31 Arm 31a Car width center side end 32 Arm 32a Car width center side end 33 Support member 33a Projection 34 Bracket 34a Projection 35 Bracket 35a Projection 37 Actuator 38 Actuator

Claims (1)

(57) [Claims] 1. A machine comprising a plurality of parking rooms arranged along a traveling path of a traveling vehicle, and a transverse feed conveyor for transferring a vehicle between the traveling vehicle and each of the parking rooms. In the type parking device, one arm used by freely changing at least one of the position or the length of one end portion in front of and behind the transverse conveyor of the traveling vehicle is directed in the vehicle width direction of the traveling vehicle and A mechanical parking device, wherein the one end portion is supported so as to be horizontally rotatable about a center of rotation, and a portion at a predetermined distance from the one end portion is pivotally supported by an actuator supported by a frame of a traveling vehicle.