JP2002147046A - Hydraulic drive type parking facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic drive type parking facility capable of raising and holding all pallets by one hydraulic unit without enlarging or pluralizing it. SOLUTION: This hydraulic drive type parking facility is provided with a pit 54, at least two rows of pallet groups 2 and 3 arranged so as to vertically move between in and above the pit, hydraulic cylinders 5 provided in parallel on the pallet groups for vertically moving the pallet groups in states supporting them from below, a locking device for maintaining stopped states of the pallet groups at raised positions, the single hydraulic unit 6 for feeding working fluid to each hydraulic cylinder, and an interlocking device 18. The locking device has a stopper displaced between a protruding position and a withdrawn position. The interlocking device 18 is composed so as to prohibit a vertical drive of the hydraulic cylinder of the other pallet group 3 from a start to a finish of an upward drive or a downward drive by the hydraulic cylinder of the one pallet group 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hydraulically driven parking facility. More specifically, the present invention relates to a hydraulically driven parking facility configured to raise and lower a pallet for mounting on a vehicle by a hydraulic cylinder, for example, to move up and down between a pit and above a pit.

[0002]

2. Description of the Related Art FIG.
Shows a conventional three-dimensional parking facility 51. This parking equipment 51 is housed in a pit 54 dug on the ground in a state in which a plurality of pallet groups 52, 53 fixed to each other in a vertically separated state are arranged in two rows on the left and right. is there. Each of the pallet groups 52 and 53 is integrally lifted and lowered, and a desired pallet is positioned at the entry level on the pit 54 to enter and exit the vehicle. In this parking facility 51, each of the pallet groups 52 and 53 has three upper and lower pallets 52a, 52b and 52c (53a, 53b and 53).
c) are separated from each other, and the left and right sides thereof are
Has been fixed by. The pallet is not limited to three tiers, and may have two or less pallets or four or more pallets. Further, the pallet group is not limited to two rows, but may be three rows or more.

The lifting mechanism for the pallet groups 52 and 53 is composed of a hydraulic cylinder 56 and a hydraulic unit 57 which are driven to move up and down. Hydraulic cylinder 56 is pallet group 5
It is erected on the floor on both outer sides at the rear of 2,53. Then, the tip of the piston rod 56b is
a, 53a. The pallet groups 52 and 53 are integrally moved up and down by expanding and contracting the piston rod 56b. Since the upper surface of the pit 54 serves as the entrance, the desired pallet is made to match the level of the entrance (ground level) by moving up and down.

[0004] The hydraulic unit 57 includes a hydraulic pump and a pump drive motor. Even if the pallet groups are arranged in a plurality of rows, usually only one hydraulic unit 57 is provided.
Hydraulic oil is supplied to the hydraulic cylinders 56 of 2, 53.

On the other hand, if a large amount of rainfall due to a typhoon or the like causes the pit 54 of the three-dimensional parking facility 51 to be flooded, it is necessary to raise all the pallets on the pit 54 to protect the vehicle. There is. in this case,
It is necessary to maintain a state in which the hydraulic oil is sent from one hydraulic unit 57 to the hydraulic cylinders 56 of all the pallet groups 52 and 53. Since all hydraulic cylinders 56 must be filled with hydraulic oil, it is necessary to increase the hydraulic oil tank of the hydraulic unit. As a result, the hydraulic unit becomes large, and the installation space must be large. On the other hand, when a plurality of hydraulic units are used, the installation cost as well as the installation space increases.

[0006] This problem becomes more remarkable when the number of pallets increases, because the stroke of lifting and lowering the pallet group increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to raise all pallets by one hydraulic unit and maintain the raised state without requiring an increase in the size and the number of hydraulic units. It is an object of the present invention to provide a hydraulically driven parking facility capable of performing the following.

[0008]

SUMMARY OF THE INVENTION A hydraulically driven parking system according to the present invention comprises a pallet for mounting a vehicle, and a hydraulic cylinder for raising and lowering the pallet to a lowered position and a raised position while supporting the pallet from below. And a lock device for holding the stopped state of the pallet in the raised position and releasing the holding.

According to such parking equipment, after the pallet is raised to the raised position by the hydraulic cylinder, the pallet is held at the raised position by the lock device, so that the hydraulic oil can be discharged from the hydraulic cylinder. That is, the piston rod can be shortened. Further, since this lock device can release the holding of the pallet, when lowering the pallet, it is sufficient to lower the pallet by the hydraulic cylinder after releasing the holding by the lock device. Therefore, it is possible to use the hydraulic oil for another drive while holding the pallet at the raised position, for example, it is possible to raise and lower another pallet among a plurality of units, so that the same function as the conventional one can be achieved with a minimum of hydraulic oil. Can be demonstrated.

The ascending position is not limited to a single height position, and a plurality of ascending positions may be set.

According to another aspect of the present invention, there is provided a hydraulically-operated parking facility comprising: a pit; at least two rows of pallets mounted on a vehicle arranged to be able to ascend and descend between the pit and above the pit; Hydraulic cylinder for raising and lowering the pallet while supporting the pallet from below, a lock device for holding the pallet at the ascending position and releasing the holding, and a hydraulic fluid for each hydraulic cylinder. A single hydraulic source for supply.

According to such a parking facility, a plurality of pallets are raised and lowered by the operation of the parking facility of the present invention by a single hydraulic unit containing hydraulic oil for raising and lowering one pallet. Becomes possible. As a result, there is no need to increase the size of the hydraulic unit even with one unit.

In any one of the above parking facilities, the locking device has a stopper which is displaced between a protruding position and a retreating position, and is used to support the pallet from below when the pallet reaches a raised position. In the parking equipment in which the stopper is in the protruding position and the stopper is in the retracted position when the pallet is raised and lowered, the pallet can be held in the raised position by a simple configuration. When the pallet moves up and down, the stopper does not interfere with the pallet, which is preferable.

The hydraulic cylinder has a supporting portion for supporting the pallet, the pallet has a supported portion supported by the supporting portion, and one of the supporting portion and the supported portion is convex. Has a concave portion, and the other has a concave portion for receiving the convex portion. When the supporting portion has a concave portion, the concave portion is open upward, and when the supported portion has a concave portion, the concave portion is downward. In the open parking facilities,
It is preferable because the support portion and the supported portion can be separated from each other by a simple configuration, and the support portion can support the weight of the pallet group via the supported portion.

A parking facility having at least two rows of vehicle-mounted pallets as described above, which is provided with an interlock control device, and the interlock control device drives the hydraulic cylinders of one row of pallets upward. Alternatively, in a parking facility which is configured to prohibit the hydraulic cylinders of the pallets in other rows from performing the lifting drive from the start of the lowering drive until the completion thereof, almost one pallet is raised and lowered. This is preferable because the operation of raising and lowering a plurality of pallets can be automatically performed by the hydraulic oil.

An operation device for instructing the pallet to go up and down, a switching valve for switching a hydraulic oil path between a hydraulic source and a hydraulic cylinder, and a position sensor for detecting a position of a rod of the hydraulic cylinder. And when the position sensor detects that the rod of the hydraulic cylinder of the pallet in the other row is in an extended state when the operating device gives an instruction to raise or lower the pallet in one row, the interlock control is performed. The device instructs the switching valve and the hydraulic source to return the hydraulic oil to the hydraulic source, and when the hydraulic oil returns to the hydraulic source, the hydraulic source is switched to send the hydraulic oil to the hydraulic cylinders on a row of pallets. It is preferable that the valve and the hydraulic pressure source are configured to be instructed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hydraulically driven parking facility according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of the parking equipment of the present invention.

The illustrated parking facility 1 has a pit 54 in which two rows of pallet groups 2 and 3 having upper, middle, and lower pallets are arranged. The pallet is not particularly limited to three tiers, and may be one tier or two tiers, or four or more pallets. The pallet groups 2 and 3 are not limited to two rows, but may be one row or three or more rows. However, the excellent effect of the present invention is exhibited only in the case of a plurality of rows. Pallet 2 in each pallet group 2, 3
a, 2b, 2c (3a, 3b, 3c) are fixed to each other by a support column 4 with a vertical interval therebetween. FIG. 1 shows a state in which the pallet group 2 on the left side is at the uppermost position (hereinafter referred to as an upper position) and the pallet group 3 on the right side is at the lower position. The arrow F in the figure indicates the approach direction of the vehicle to enter.

Hydraulic cylinders 5 for individually raising and lowering the pallet groups are provided on both left and right sides of each of the pallet groups 2 and 3. The base end of the cylinder body (also referred to as an outer cylinder) 5a is fixed to the floor, and the tip of the piston rod 5b is connected to support the upper pallet 1 from below. Also,
Alternatively, the tip of the piston rod 5b may be fixed to the floor surface, and the upper pallet 1 may be supported by the base end of the outer cylinder 5a. The hydraulic cylinder 5 raises and lowers the pallet group in three stages: an upper position, a middle position, and a lower position. That is, in the present embodiment, there are two stages of the upper position and the middle position as the ascending position. In the upper position, the lower pallets 2c and 3c are located at the ground level, and vehicles enter and exit. In the middle position, the middle pallet 2b,
3b is located at the ground level, and in the lowered position, the upper pallets 2a, 3a are located at the ground level.

One hydraulic unit 6 is installed on the floor in the pit 54 as a drive device for operating the all hydraulic cylinders 5. The hydraulic unit 6 is installed between the pallet groups so as not to hinder the elevation of the pallet groups. In order to arrange the hydraulic unit 6 in the pit 54 in this manner, it is desirable that the hydraulic unit be sound even when the pit 54 is flooded. For that purpose, it is preferable to use a hydraulic unit proposed by the present applicant in Japanese Patent Application No. 2000-295909. Of course, in the present invention, the hydraulic unit may be arranged on the pit (ground level).

As shown in FIG. 2, one hydraulic unit 6
The hydraulic oil is sent to all the hydraulic cylinders 5 from the cylinder. However, a switching valve 8 is provided in a hydraulic pipe 7 connected from the hydraulic unit 6 to the hydraulic cylinder 5 so that the pallet group can be moved up and down. The parking facility is provided with an interlock control device 18. The interlock control device 18 includes the hydraulic unit 6 and the switching valve 8
And an operation panel 19 and a position sensor (not shown) for the piston rod. A plurality of pallet groups 2, 3 are provided by the switching valve 8 and the interlock control device 18.
Are not allowed to go up and down at the same time. That is, when the hydraulic cylinder of the right pallet group 3 is filled with hydraulic oil when the operation panel 19 gives an instruction to raise or lower one pallet group 2 (for example, the left pallet group 2), the interlock control device 18 This state is detected from the position sensor, and the hydraulic unit is instructed to return the hydraulic oil to the hydraulic unit 6. At this time, the switching valve is operated to make the hydraulic cylinder 5 and the hydraulic unit 6 communicate with each other. When the hydraulic oil returns to the hydraulic unit 6, the hydraulic cylinder 5 and the hydraulic unit 6 are connected to the switching valve 8 so as to send the hydraulic oil to the hydraulic cylinder 5 of the left pallet group 2 to the hydraulic unit 6. To instruct. Next, the hydraulic unit 6 is operated to send hydraulic oil to the hydraulic cylinders 5 of the left pallet group 2.

FIG. 3 shows a connecting mechanism 9 for connecting the piston rod 5b and pallet groups 2 and 3 (hereinafter, represented by reference numeral 2). The connecting mechanism 9 includes a support portion 10 formed on the upper end of the piston rod 5b and the upper pallet 2a.
And the supported portion 11 formed at the same time. The supported portion 11 may be formed at a height position of the upper pallet 2a on the support column 4 instead of the upper pallet 2a. The supported portion 11 is formed of a protrusion protruding laterally from the pallet 2a in a bar shape, and the support portion 10 is formed of a concave portion that opens upward in a U-shape. The support portion 10 supports the supported portion 11 from below so that the supported portion 11 fits into the U-shaped recess. Therefore, the piston rod 5b
Is extended, the pallet group is pushed up. However, if the piston rod 5b is shortened in a state where the pallet is fixed at the upper position or the middle position, the support portion 10 and the supported portion 11 are separated from each other, and the piston rod 5b is alone. Descend.

The connecting mechanism is not limited to the above-described structure. The supporting portion 10 is constituted by a bar-shaped convex portion extending in the lateral direction, and the supported portion 11 is formed in a U-shaped recess opening downward from the pallet 2a. May be configured. Alternatively, a supported portion (supporting portion) may be constituted by a concave portion having a hemispherical shape, a conical shape, a cylindrical shape with a bottom, or the like instead of the concave portion opened in a U-shape, and a convex portion such as a hemispherical shape that fits into the concave portion. The support portion (supported portion) may be configured from the portion. In short, any structure may be used as long as the support portion and the supported portion can be separated from each other, and the support portion can support the weight of the pallet group via the supported portion. With this configuration, the same operation as described above is achieved.

As shown in FIGS. 4 and 5, the parking facility 1 has a pallet group 2 and 3 for holding the pallet group at that position when the pallet group 2 and 3 are raised to the middle position and the upper position, respectively. A locking device 12 is provided.
The lock device 12 is a main pillar 1 erected in the pit 54.
3 is mounted near the upper end. The position near the upper end of the main pillar 13 is the lower pallet 2c, 3
c, and corresponds to the lower part close to the middle pallets 2b, 3b at the middle position. The main pillars 13 are erected at two front and rear positions between the pallet groups 2 and 3. Of course, main pillars may be erected on both sides of each pallet group, and one pallet group may be supported by four locking devices. Further, if necessary, the main pillar 13 may be higher than the ground level, and the lock device 12 may be mounted at a position higher than the ground level. In that case, engagement protrusions 22b, 22c, 23b, 23c
It is necessary to attach the pallet group at the upper position and the middle position to the two height positions corresponding to the position of the lock device 12, respectively. The main column 13 is formed by two columns 13a having a substantially C-shaped cross section with their opening sides facing each other. The upper end of the main pillar 13 is at the ground level, and a closing plate 14 serving as a passage for a user is fixedly provided there.

As shown in FIG. 5, the lock device 12 has a main body 15 in which a solenoid is accommodated, a core rod 16 of the solenoid, and an engaging member 17 fixed to the core rod 16 as a stopper. . A main body 15 is attached to the main column 13. FIG. 5A is a horizontal sectional view of the main column 13 to which the lock device 12 is attached.
FIG. 5B is a sectional view taken along line VV of FIG.

As shown by a two-dot chain line in FIG. 5, the solenoid is normally in a demagnetized state, and at that time, the core rod 16 is in a protruding position protruding inside the main column 13. When excited, it is returned to the retracted position. On the other hand, the middle pallets 2b, 3b and the lower pallets 2c, 3c are respectively provided with engagement projections 22b, 22
c, 23b and 23c are provided. Engagement projection 22
The b, 22c, 23b, and 23c may be formed at the height position of the middle pallet and the height position of the lower pallet on the column 4 instead of the pallet. Each of the pallet groups 2 and 3 is provided with the engaging projections 22b, 22c, 23b and 23c.
Is raised and lowered while projecting between both pillars 13a. Therefore, if the engaging member 17 of the lock device 12 projects, it interferes with the engaging protrusions 22b, 22c, 23b, and 23c. Therefore, when the pallet group starts moving up and down (not the start of the operation of the hydraulic cylinder). As shown by the solid line in FIG. 5, the solenoid is excited to retreat the engaging member 17 to the retreat position where no interference occurs. Then, at the same time when the pallet group stops moving up and down, the solenoid is demagnetized to cause the engaging member 17 to project to the projecting position. As described above, synchronizing the start and end of lifting and lowering of the pallet group with the excitation and demagnetization of the solenoid can be easily achieved by using a known technique such as a limit switch or an optical sensor.

With this configuration, when the pallet groups 2 and 3 are stopped at the upper position or the middle position, the engaging member 1
7 is just the engagement protrusion 22b, 22c, 23b, 23c
Will protrude downward in the vicinity of. As a result, even if the hydraulic cylinder 5 shortens the rod 5b, the pallet group does not descend because it is supported from below by the engaging member 17 via the engaging projections 22b, 22c, 23b, 23c. That is, the pallet group is kept stopped at the middle position or the upper position.

With reference to FIGS. 2 and 4, the operation of raising and lowering the pallet groups 2 and 3 in the parking facility 1 having the above-described configuration will be described.

First, from the state where both pallet groups 2 and 3 are at the lowered position, the operator operates the operation panel 19 to select one of the right and left pallet groups (for example, the left pallet group 2).
Is called to the ground level. Then, at the same time when the hydraulic unit 6 is operated, the interlock control device 18 and the switching valve 8 are operated to close the hydraulic pipe from the hydraulic unit 6 to the hydraulic cylinder of the right pallet group 3 and to supply the hydraulic oil to the hydraulic cylinder of the left pallet group 2 Send.
Then, when the left pallet group 2 starts ascending, the lock device 12 is excited and the engaging member 17 is retracted. As soon as the left pallet group 2 reaches the middle position and stops, the lock device 12
Is demagnetized, and the engaging member 17 protrudes and engages with the engaging protrusion 22b from below. As a result, the lock device 12 supports the left pallet group 2 from below in the middle position.

To lower the left pallet group 2 to the lowered position again from this state, the hydraulic cylinder 5 may be operated by operating the operation panel 19. When the piston rod 5b of the hydraulic cylinder 5 is contracted, the piston rod 5b is automatically contracted after being slightly extended. Therefore, the engagement member 17 is retracted at the same time as the left pallet group 2 is slightly raised, and then the piston rod 5b is shortened and the left pallet group 2 is lowered.

When the right pallet group 3 is lifted while the left pallet group 2 is in the middle position, for example, when the lower pallet 3c of the right pallet group 3 is called to the ground level, the interlock control device is used. 18 and the hydraulic unit 6 are operated, and the hydraulic oil is returned from the hydraulic cylinder 5 of the left pallet group 2 to the hydraulic unit 6 (see FIG. 2). That is, the piston rod 5b of the left pallet group 2
Is shortened. Next, the switching valve 8 is operated, the hydraulic piping from the hydraulic unit 6 to the hydraulic cylinder of the left pallet group 2 is closed, and hydraulic oil is sent to the hydraulic cylinder of the right pallet group 3. When the right pallet group 3 starts to rise, the lock device 1
2 is excited and the engaging member 17 is retracted. Right pallet group 3
Reaches the upper position and stops, and at the same time, the lock device 12 is demagnetized and the engaging member 17 protrudes and engages with the engaging protrusion 23c from below. As a result, the lock device 1 is in the upper position.
2 supports the right pallet group 3 from below (see FIG. 2).

When any of the pallet groups 2, 3 is moved to the upper position or the middle position, the same operation as described above is performed. That is, when raising or lowering one pallet group, the hydraulic oil is returned to the hydraulic unit 6 from the hydraulic cylinder of the other pallet group in advance. In this way, both pallet groups are raised and lowered with a minimum amount of hydraulic oil. Therefore, when the pit 54 is likely to be flooded, it is possible to raise one pallet group to the upper position and then raise the other pallet group to the upper position, and hold both pallet groups at the upper position.

When the vertical stroke is small,
Depending on the conditions, the above-mentioned engaging projections may be connected to the lower pallet 2c,
It may be attached only to the position 3c. That is, the lock device 12 may operate only at the upper position of each pallet group.

In the above embodiment, the lock device 12 is operated to hold the pallet group at the upper position or the like even in the normal operation of the parking facility. However, the application of the present invention is not limited to this embodiment. . In a normal operation, the lock device 12 may not be operated, and one pallet group may be moved to the lowered position and then the other pallet group may be raised. Then, the locking device 12 may be operated only in an emergency such as when the pit 54 is likely to be flooded, and the entire pallet group may be held at the upper position.

[0036]

According to the present invention, the entire pallet group can be raised by one hydraulic unit and the raised state can be maintained without requiring the hydraulic unit to be large and plural.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a parking facility of the present invention.

FIG. 2 is a schematic front view illustrating the operation of a hydraulic cylinder in the parking facility of FIG.

FIG. 3 is an enlarged view of a part III in FIG. 1 and is a perspective view showing a coupling mechanism between a hydraulic cylinder and a pallet.

FIG. 4 is a front view of the parking facility of FIG. 1;

FIG. 5A is a horizontal sectional view of a main pillar 13 to which a lock device 12 is attached, and FIG. 5B is a sectional view of FIG.
FIG. 5A is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view showing an example of a conventional parking facility.

[Explanation of symbols]

 1, parking facilities 2. (left) pallet group 2a: upper pallet 2b: middle pallet 2c: lower pallet 3 .... (right) pallet group 3a: upper pallet Pallet 3b Middle pallet 3c Lower pallet 4 Support column 5 Hydraulic cylinder 5a Cylinder body (of hydraulic cylinder) 5b ... Piston rod (of hydraulic cylinder) 6 ··· Hydraulic unit 7 ··· Hydraulic piping 8 ··· Switching valve 9 ··· Connection mechanism 10 ··· Supporting part 11 ··· Supported part 12 ··· Lock device 13 ···・ ・ ・ Main pillar 13a ・ ・ ・ Column 14 ・ ・ ・ ・ ・ ・ Closing plate 15 ・ ・ ・ ・ ・ ・ Main body (of the lock device) 16 ・ ・ ・ ・ ・ ・ Core rod (of the lock device) 17 ・ ・ ・ ・ ・ ・ Engaging member 18 ・ ・ ・..Interlock control device 19 ... Operation panel 22b ... (middle left) engaging protrusion 22c ... (lower left) engaging protrusion 23b ... (middle right) engaging protrusion 23c ... (lower right) engaging protrusion 54 ···pit

Claims (6)

[Claims] 1. A pallet for mounting a vehicle, a hydraulic cylinder for raising and lowering the pallet to a lower position and a raised position while supporting the pallet from below, and holding the pallet at a raised position, and ,
A hydraulically driven parking facility comprising a locking device for releasing the holding. 2. A pit, at least two rows of pallets mounted on a vehicle, which can be raised and lowered between the inside of the pit and above the pit, and a pallet attached to each pallet supported from below. And a hydraulic cylinder for raising and lowering the pallet at the ascending position.
A hydraulically driven parking system comprising: a lock device for releasing the holding; and a single hydraulic source for supplying working fluid to each hydraulic cylinder. 3. A state in which the lock device has a stopper that is displaced between a projecting position and a retracted position, and the stopper is at the projecting position in order to support the pallet from below when the pallet reaches the rising position. The hydraulically driven parking equipment according to claim 1 or 2, wherein the stopper is located at a retracted position when the pallet is raised and lowered. 4. The hydraulic cylinder has a support portion for supporting a pallet, the pallet has a supported portion supported by the support portion, and one of the support portion and the supported portion is provided. It has a convex portion and the other has a concave portion that receives this convex portion. When the supporting portion has a concave portion, the concave portion is open upward, and when the supported portion has a concave portion, the concave portion is downward. The hydraulically driven parking facility according to claim 1 or 2, wherein the parking facility is opened. 5. An interlock control device, comprising:
The interlock control device is configured to prohibit the hydraulic cylinders of another row of pallets from performing the vertical drive until the hydraulic cylinders of one row of the pallets start the upward drive or the downward drive until they are completed. The hydraulically driven parking facility according to claim 2, wherein the parking facility is provided. 6. An operating device for instructing the pallet to go up and down, a switching valve for switching a hydraulic oil path between a hydraulic source and a hydraulic cylinder, and a position sensor for detecting a position of a rod of the hydraulic cylinder. If the position sensor detects that the rod of the hydraulic cylinder of the pallet in the other row is in the extended state when the operating device gives an instruction to raise or lower the pallet in one row, the interlock control device operates. The switching valve and the hydraulic source are instructed to return the oil to the hydraulic source, and when the hydraulic oil returns to the hydraulic source, the switching valve and the hydraulic source are sent to the hydraulic source to send the hydraulic oil to the hydraulic cylinders of a row of pallets. 6. The hydraulically driven parking facility according to claim 5, wherein the instruction is made as follows.