JPH1150682A - Device for preventing pallet from falling in multistory parking space - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problems that when a pallet horizontally vibrates, it cannot be lowered smoothly and the construction of a device becomes complicated and the cost thereof rises so that a maintenance work becomes hard to perform, and hence the waiting time for cars becomes longer. SOLUTION: One of the ends of an arm 23 is rotatably supported by a first bearing axis 24 on a bracket 22 and a hook 26 is mounted to a second bearing axis 25 so as to be rotatable with respect to the other end of the arm 23. And a guide axis 27 is secured to an intermediate position of the arm 23 and further the arm 23 and the bracket 22 are connected by a coil spring 28. On the other hand, a flange 31a of a guide member 30 is secured to a side of a pallet 5 and an extending part 32 extends from the upper end of a flange 31b of the member 30 so as to be spaced apart from the pallet 5 at a predetermined angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-story parking system applied to a multi-story parking lot in which a multi-story parking space is secured by utilizing a three-dimensional space, in which a pallet on which a vehicle is mounted is prevented from dropping. The present invention relates to a pallet fall prevention device.

[0002]

2. Description of the Related Art It is well known in recent years that it has become difficult to secure land that can be used as a parking lot mainly in an urban area. Therefore, it has been devised to secure a parking space on a multi-story using a three-dimensional space, and a three-dimensional parking device that has been widely used to date has been devised. Such a multi-story parking device includes a plurality of pillars erected in a parking space, a beam erected between the pillars, a vehicle mounting pallet installed between the pillars to be able to move up and down, and a pallet. A lifting device (for example, a chain or the like) that lifts at a rising end fixed position, and a fixing device that fixes the lifting device at a predetermined position (for example, a brake attached to a motor that rotates the sprocket in a sprocket around which the chain is wound) Are provided.

The most important point to note in the above-mentioned multi-story parking device is that there is a possibility that some abnormality may occur in the lifting device or the fixing device, and the pallet, which has been mounted thereon and moved upward, may fall. That is. For this reason,
The multi-story parking device is provided with a fall prevention device that prevents the pallet from falling even if an abnormality occurs in the lifting device or the fixing device for some reason. As a conventional fall prevention device, for example, in Japanese Patent Application Laid-Open Nos. 5-52048, 6-25464, 7-14016 and 7-35031, hook members such as hooks are provided on the pallet side. At the same time, a retaining member such as a shaft which engages with the retaining member is provided on the column or beam side.
In Japanese Patent No. 166632, a hook member is provided on a column or a beam side, and a hook member is provided on a pallet side. Further, in Japanese Patent Publication No. 4-65947, a hook member is mounted on a pallet lifting / lowering cylinder provided on a column. At the same time, a latch member is provided on the column side.

In each of the above-described fall prevention devices, a hooking member such as a hook and a locking member such as a shaft engage with each other at a fixed position of a rising end of the pallet, and a column and a beam are supported by the pallet and a vehicle mounted on the pallet. Receiving the weight prevents the pallet from falling. On the other hand, when the pallet descends from the rising end fixed position, the engagement between the hooking member and the latching member is released, and the pallet is smoothly moved downward. Here, in order to release the engagement, there is also a means for displacing the hook member using power of a solenoid or the like, but this naturally requires electric wiring and a control device. There is also a need for means that are not used. For this reason, the above publications disclose the following proposals.

Japanese Patent Publication No. 4-65947 discloses a first contact member for rotating a hook member (hook) to an unlocked position. Japanese Unexamined Patent Publication No. 5-52048: A holding means is provided for holding an unlocked state between a hooking member (stopper blade) and a hooking member (engaging hole). JP, 7-189518, A: A hook member (bracket portion) is automatically rotated clockwise or counterclockwise so that the displacement of the hook member does not cause the hook member (bracket portion) to face the hook member (hook portion). I do. Japanese Utility Model Publication No. 7-35031: A baffle plate is provided to hinder the engagement between a hooking member (a hook having a hook) and a hooking member (a locking pin). Japanese Unexamined Utility Model Publication No. Hei 6-16632: The pallet is prevented from dropping by the engagement of an engagement pair, and a support is provided for retracting and supporting a pair of engagement elements forming an engagement pair when the pallet is lowered. JP-A-6-25464: Hook (Hook)
Is rotatable only downward, and a cam surface is provided which contacts the latch member (engaging pin) when the pallet is lowered and rotates the latch member downward. Japanese Utility Model Laid-Open No. 7-14016: Hook member (hook)
A regulating piece and a guide piece for retreating the vehicle are provided.

[0006]

However, the devices disclosed in the above publications have the following problems. In other words, in the apparatus in each of the above publications, when the pallet is at the rising end fixed position, the hooking member and the latching member are engaged to prevent the pallet from dropping. It is released and has a structure having means for appropriately maintaining this released state. For this reason, there is a disadvantage that the pallet cannot be smoothly moved down unless the above-mentioned means is operated when the pallet rolls or the like occurs.

Further, when the above-mentioned engagement is released, the pallet which is once further raised from the rising end fixed position needs not only the rising end fixed position detecting means but also a position detecting means. In addition to increasing complexity and cost, it also makes maintenance work more difficult. Also, if the distance to raise the pallet once is long,
Accordingly, there is an inconvenience that the waiting time of the user becomes longer.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-189518, the structure of the fall prevention device itself is very complicated, and the bracket which has become vertical due to displacement may fall as the pallet descends. There is also. For this reason, in the embodiment in this publication, a sensor for confirming the vertical state is used, but this further promotes a complicated structure and an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to provide a safe and reliable fall prevention function as well as a simple structure to reduce cost. A multi-story parking device that can simplify maintenance and inspection work, and can reliably and smoothly move the pallet up and down even when the pallet rolls, etc., and can also reduce the waiting time for users. The present invention provides a pallet fall prevention device.

[0010]

According to the present invention, there is provided a pallet fall prevention device for a multi-story parking device according to the present invention, wherein a lower fixed position where a vehicle can get on and off and an upper position higher than the lower fixed position. And a lower part of the pallet for mounting a vehicle mounted movably up and down between the upper fixed position forming a mounting space of the vehicle below the pallet and the pallet side portion near the upper fixed position. A supporting member capable of supporting the pallet is provided, and a guide member is provided on the side of the pallet, and the supporting member is positioned close to the side of the pallet in a vertical plane intersecting the extending direction of the side of the pallet. Direction and
The guide member is rotatably supported in the opposite direction away from the side of the pallet, and the guide member includes a guide portion that guides the support member to turn in the forward direction with the upward movement of the pallet, and a guide portion below the guide portion. And a fixing portion for fixing the support member at a position where the support member can support the pallet side portion, and the support member has the support member oriented in the opposite direction. And an abutting member that connects the elastic body that urges to turn and guides the support member in the forward direction by contacting the guide member.

The invention described in claim 2 is the first invention.
In the invention described in the above, the support member is formed by a hook having a curved portion between a base end and a distal end, and having a back portion outside the curve and an abdomen located inside the curve and capable of supporting the pallet side portion, The hook is in the correct position with the abdomen facing upwards,
Between the reverse position in which the abdomen points downward, the pivot is pivotally supported in the reverse direction from the normal position to the reverse position and in the normal direction from the reverse position to the normal position, respectively. The elastic member is connected to the back portion, and the contact member is provided on the base end side.

Further, the invention described in claim 3 is the first invention.
Alternatively, in the invention according to claim 2, the notch is formed by notching the side portion of the pallet, and an engaging portion that can be engaged with the notch is formed on the support member. And

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view showing the overall structure of a multi-story parking device 1.
This is a so-called two-stage lifting / lowering parking device. In this figure, reference numeral 2 denotes a column constructed on the ground at the four corners of the parking space, and a pair of opposed vertical frames 3a and horizontal frames 3b is provided between the columns 2 to form a frame 3.

In the frame 3, a pallet 5 for mounting a vehicle, which is installed to be able to move up and down by a driving mechanism 4, is disposed. Here, the configuration of the driving mechanism 4 is as follows. That is, the drive shaft 11 is rotatably mounted between the vertical frames 3a via a bearing (not shown) or the like, and the elevating sprocket 12 is fixed at both ends of the driving shaft 11, and between the elevating sprocket 12 The drive sprocket 13 is fixed, and these
It rotates synchronously with the rotation of. The elevating sprocket 12 is composed of a pair of small sprockets spaced apart in the axial direction, and an intermediate pulley indicated by reference numeral 14 is provided inside the vertical frame 3a in correspondence with each of these small sprockets (accordingly, in this example, Each of the vertical frames 3a is provided with a total of four intermediate pulleys, two each.

Further, suspension chains 15 are individually wound around the small sprockets constituting the elevating sprocket 12 and the intermediate pulleys 14 corresponding to the small sprockets. One end of the hanging chain 15 is one horizontal frame 3b (the left horizontal frame in FIG. 1).
And the other end is fixed to the upper surface of the side of the pallet 5, and is wound around the small sprocket and the intermediate pulley 14 in the middle of the other end. On the other hand, a motor 16 with a brake for rotating the drive sprocket 13 is disposed on the one horizontal frame 3b. A transmission chain 17 is wound around the output sprocket of the brake motor 16 and the drive sprocket 13. Has been turned.

Therefore, when the motor 16 with the brake rotates, the rotational force is transmitted from the motor output shaft to the driving sprocket 13 via the transmission chain 17, and the driving shaft 11 rotates with the rotation of the driving sprocket 13. At the same time, the elevating sprocket 12 rotates synchronously.
When the lifting sprocket 12 rotates, the suspension chain 1
The pallet 5 moves up and down via the pallet 5, and when the pallet 5 is raised, the suspension chain 15 is loosened once on the side, and conversely, when the pallet 5 is lowered, the suspension chain 15 is suspended by the suspension chain 15. Become. The motor 16 with a brake fixes the motor output shaft when the motor 16 is not rotating. Even when the pallet 5 is suspended, the drive sprocket 13 is stopped.
Since the rotation of the pallet 5 is restricted, the pallet 5 does not fall and a stop position can be secured.

In addition, a rising end detecting limit switch 18 for sending a signal when the pallet 5 has risen to a predetermined position is provided on an upper portion of the support column 2.
A limit switch 19 for detecting a falling edge, which sends out a signal when the pallet 5 is lowered to a predetermined position, is provided. On the other hand, the pallet 5 is provided with a dog 20 that can contact with the limit switches 18 and 19 for detecting the rising end and the falling end.

The vertical frame 3a of the multi-story parking device 1 is provided with a fall prevention device 21, the details of which are shown in FIGS. The fall prevention device 21 is attached to a bracket 22 fixed to the lower end surface of the vertical frame 3a, and when the pallet 5 is stopped at a fixed position at the rising end, for example, when the suspension chain 15 is broken or when a brake is provided. Even if the braking action of the motor 16 fails, the pallet 5 can be prevented from falling.

FIG. 2 is a front view of the fall prevention device 21, and FIG. 3 is a side view of the same. In these figures, the bracket 22
In the longitudinal direction of the vertical frame 3a (therefore, the pallet 5
(Extending direction of the side portion), and is fixed in a vertical plane perpendicular to the vertical direction. And an arm (support member) indicated by reference numeral 23
One end of the bracket 22 is
To the other end, a hook (supporting member) 26 is attached to the other end side by a second bearing shaft 25 so as to be pivotable, and a guide shaft (contact member) 2 is provided at an intermediate portion.
7 and the arm 23 and the bracket 22
Are connected by a winding spring (elastic body) 28. Note that the guide shaft 27 may or may not be able to rotate with respect to the arm 23.

As described above, the arm 23 is rotatable with respect to the bracket 22 by the first support shaft 24, and the hook 26 is rotatable with respect to the arm 23 by the second support shaft 25. In particular, the direction in which the winding spring 28 extends and turns toward the pallet 5 is defined as the forward direction, and the direction in which the winding spring 28 contracts due to its elasticity and turns away from the pallet 5 is defined as the opposite direction.

On the side of the pallet 5, a total of four guide members 30 corresponding to the above-described fall prevention device 21 are provided.
Is provided. In this guide member 30, one flange 31a of a Z-shaped base 31 is fixed to the pallet 5 side, and is above the upper edge of the other flange (fixed portion) 31b and separated from the pallet 5 side. And an extension portion (guide portion) 32 extending at a predetermined angle to the side. The guide member 30 is fixed to the pallet 5 in such a manner that when the pallet 5 moves in the up-down direction, only the flange 31b and the extension 32 contact the guide shaft 27 of the fall prevention device 21. In addition, pallet 5
A latching portion 5a that engages with the hook 26 at the lower end of the side portion.
The latch 5a may be formed by bending the pallet 5 body or the like.
It may be configured to be fixed to.

Next, the operation of the fall prevention device 21 in the above-described multi-story parking device 1 will be described. 2 and 3
Shows a state in which the pallet 5 is in the middle of rising and before reaching the rising end fixed position. When the pallet 5 rises from this state, the extension 32 of the guide member 30 contacts the guide shaft 27, and when the pallet 5 further rises, the guide shaft 27 moves downward along the extension 32. Accompanying this, arm 2
Reference numeral 3 pivots toward the pallet 5 (positive direction) from the first bearing shaft 24 as a base point, the winding spring 28 is extended, and the hook 26 contacts the pallet 5 side. FIG. 4 shows a state in which the arm 23 is parallel to the side of the pallet 5 in this manner. In this state, the latch 5a of the pallet 5 is located below the tip 26a of the hook 26.

FIG. 5 shows a state in which the pallet 5 further rises from the state of FIG. 4, the rising end detection limit switch 18 abuts on the dog 20 of the pallet 5, and the pallet 5 stops at the rising end fixed position. In this state, the latching portion 5a of the pallet 5 is located above the tip 26a of the hook 26, while the flange 31b of the guide member 30 is raised by the guide shaft 27 while the arm 23 is positioned in the vertical direction. When it rises slightly, the guide shaft 27 becomes a flange 31b.
Stop at the position where the lower end of the is reached.

When the pallet 5 is slightly lowered from this state, the flange 31b of the guide member 30 is lowered while the arm 23 is vertically supported by the guide shaft 27, and within a range where the flange 31b is in contact with the guide shaft 27. The latch 5a of the pallet 5 engages with the hook 26 and cannot be further lowered, so that the pallet 5 is prevented from falling.

In order to lower the pallet 5 from the state shown in FIG. 5 to the lower end fixed position, the pallet 5 is slightly lifted once from this state. Then, the lower end of the flange 31b of the guide member 30 is located above the guide shaft 27, and the winding spring 28 revolves the arm 23 away from the pallet 5 (in the opposite direction) due to its elasticity. Turn to position 2. Thereafter, when the pallet 5 is lowered, the back surface of the extension portion 32 of the guide member 30 (the pallet 5)
The side opposite to the side facing the side) contacts the guide shaft 27, but at this time, the arm 23 pivots in a direction away from the pallet 5, so that the lowering of the pallet 5 is not prevented, and 5 can move down smoothly.

As described above, according to the fall prevention device 21 of the first embodiment, a safe and reliable fall prevention function can be achieved by the engagement between the latch portion 5a of the pallet 5 and the hook 26. Needless to say, the structure itself is simple, so that cost reduction and simplification of maintenance and inspection work can be realized. Further, the pallet 5 can be moved up and down reliably and smoothly even when the pallet 5 rolls, and the pallet 5 for disengagement is moved up to the width of the diameter of the guide shaft 27. Since the degree of correspondence is sufficient, the moving time of the pallet 5 for releasing the engagement can be reduced, and the waiting time of the user can be reduced.

[Second Embodiment] FIGS. 6 to 9 show a second embodiment. In this example, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is simplified. FIG. 6 is an overall view of a fall prevention device 41 according to the second embodiment. The arm 42 in this case is made of a member in which a tongue piece 42b is integrally fixed to a base 42a having a U-shape in plan view, and a hook 43 is provided inside the arm 42. On the other hand, the guide shaft 27 is fixed to the base portion 42a so as to protrude to the side opposite to the bracket 22 side.
The hook 43 is pivotally attached to the bracket 22 by a support shaft 44, and the hook 43 is also pivotable to the arm 42. In particular, the hook 43 is formed of a plate-like body, and one end thereof is cut to form an engagement slope 43a as an engagement portion.

The arm 42 is connected to the bracket 22 by a winding spring 28. The winding spring 28 is attached to the bracket 22 via a first projection 22a fixed to the bracket 22. Meanwhile, the bracket 22
In the above, near the lower end near the pallet 5, a second protrusion 22b is fixed, and the second protrusion 22b prevents the arm 42 from turning toward the pallet 5 (forward direction). Then, as shown in FIG. 7, while the pallet 5 is being lifted, the hook 43 is
Is supported at a fixed angle with respect to the pallet 5 at a position where it does not interfere with the pallet 5. The pallet 5 is formed with a notch 5b as a hook portion at a position where the hook 43 engages with the engaging slope 43a.

FIG. 8 shows that when the pallet 5 is raised, the guide shaft 27 is displaced along the extending portion 32 of the guide member 30 so that the engaging slope 43a of the hook 43 approaches the pallet 5 (forward direction). ) Shows a state of turning and contacting with the pallet 5. At this time, the notch 5b serving as the latching portion of the pallet 5 is still below the engagement slope 43a of the hook 43, and is not engaged with the notch 5b.

Further, when the pallet 5 moves upward from the state shown in FIG. 8 to the fixed end position shown in FIG. 9, the notch 5b
When the pallet 5 is lowered from this state, the engaging slope 43a of the hook 43 is positioned inside the arm 4.
2 comes into contact with the second protrusion 22b, and the hook 43 is supported by the arm 42 and the support shaft 44, whereby the lowering of the pallet 5 is prevented. Then, once the pallet 5 is slightly raised from the rising end fixed position, the hook 43 pivots away from the pallet 5 (reverse direction) by the elasticity of the winding spring 28, and returns to the position shown in FIG. Thereafter, when the pallet 5 descends, the guide shaft 27 comes into contact with the back surface (similar to the above-described back surface) of the extension portion 32, but the arm 42 pivots away from the pallet 5 so that the pallet 5 is prevented from descending. The pallet 5 can smoothly move down.

In the fall prevention device 41 of the second embodiment, not only can the fall prevention function be achieved safely and reliably, but also the simple structure reduces the cost and simplifies the maintenance and inspection work. Can be realized. Further, the pallet 5 can be moved up and down reliably and smoothly even when the pallet 5 rolls. In addition, the rising distance of the pallet 5 for disengagement can be reduced, so that the waiting time of the user can be reduced.

[0032]

As is clear from the above description, according to the apparatus of the present invention, the following effects can be obtained. According to the first aspect of the present invention, it is possible to achieve not only a safe and reliable drop prevention function, but also a low cost and a simple maintenance work with a simple structure. . Further, it is possible to reliably and smoothly move the pallet up and down even when the pallet rolls. In addition, since the rising distance of the pallet for disengagement can be shortened, the waiting time of the user can be shortened.

According to the second aspect of the present invention, it is possible to achieve not only a safe and reliable drop prevention function, but also a simple structure to reduce the cost and simplify the maintenance and inspection work. be able to. Further, it is possible to reliably and smoothly move the pallet up and down even when the pallet rolls. In addition, since the distance for lifting the pallet for disengagement can be shortened, the waiting time of the user can be shortened. In particular, the use of the hook can further simplify the structure. it can.

According to the third aspect of the present invention, it is possible to achieve not only a safe and reliable fall prevention function, but also a simple structure to reduce the cost and simplify the maintenance and inspection work. be able to. Further, it is possible to reliably and smoothly move the pallet up and down even when the pallet rolls. In addition, since the rising distance of the pallet for disengagement can be shortened, the waiting time of the user can be shortened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the multi-story parking device described in the first embodiment.

FIG. 2 is a front view showing a fall prevention device attached to the multi-story parking device of FIG. 1;

FIG. 3 is a side view of the same.

FIG. 4 is an explanatory diagram for explaining the operation of the fall prevention device accompanying the rising movement of the pallet.

FIG. 5 is an explanatory diagram illustrating the operation of the fall prevention device when the pallet has moved to a rising end fixed position.

FIG. 6 is an overall view showing the fall prevention device described in the second embodiment.

FIG. 7 is a front view showing the fall prevention device of FIG. 6;

FIG. 8 is an explanatory diagram illustrating the operation of the fall prevention device shown in FIG. 6 in association with the upward movement of the pallet.

FIG. 9 when the pallet has been moved to the rising end fixed position.
It is explanatory drawing explaining operation | movement of the fall prevention device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multilevel parking device 5 Pallet 5a Latch part 5b Notch part 21 and 41 (pallet) Fall prevention device 23, 42 Arm (support member) 26, 43 Hook (support member) 27 Guide shaft (contact) 28) Winding spring (elastic body) 30 Guide member 31b Flange (fixed part) 32 Extension part (guide part) 43a Engagement slope (engagement part)

Claims (3)

[Claims] 1. A vehicle which can be moved up and down between a lower fixed position where a vehicle can get on and off and an upper fixed position which is above the lower fixed position and forms a mounting space of the vehicle below the lower fixed position. In the fall prevention device for a pallet for mounting on a vehicle, a support member capable of supporting the pallet side portion is provided near the upper fixed position, while a guide member is provided on the pallet side portion, Within a vertical plane intersecting the extending direction of the pallet side portion, the guide member is pivotably supported in a forward direction approaching the pallet side portion and a reverse direction away from the pallet side portion, respectively, and the guide member is A guide portion for guiding the support member to pivot in the forward direction with the pallet moving upward, and a guide portion continuously provided downward from the guide portion, the support member being located at a position where the support member can support the pallet side portion. Fixing to fix And the support member further connects an elastic body that urges the support member to pivot in the reverse direction, and abuts the guide member to move the support member in the forward direction. A pallet fall prevention device in a multi-story parking device, wherein a contact member for guiding turning is provided. 2. The support member comprises a hook having a curved portion between a proximal end and a distal end, and having a back portion outside the curve and an abdomen inside the curve and capable of supporting the side portion of the pallet. Between the normal position with the abdomen facing upward and the reverse position with the abdomen facing downward, from the normal position to the reverse position in the reverse direction and from the reverse position to the normal position. 2. The device according to claim 1, wherein each of the elastic members is rotatably supported in the forward direction, the elastic body is connected to the back portion, and the contact member is provided on the base end side. 3. Pallet fall prevention device in multi-story parking equipment. 3. A notch formed by cutting the pallet side portion, and an engaging portion engageable with the notched portion is formed on the support member. 3. The pallet fall prevention device in the multi-story parking device according to any one of 2.