JP2552875Y2 - Fall prevention device for lifting pallets - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a parking pallet in which a lifting pallet equipped with a vehicle is hung at a stop position on each floor in a multi-story parking system to prevent the pallet from falling in case of an unexpected event. The present invention relates to a fall prevention device.

[0002]

2. Description of the Related Art Conventionally, a parking lot has been constructed on a multi-story floor in order to cope with an urban situation where the site area is becoming increasingly narrow. In such a multi-story parking device, the pallet is raised and lowered by a winding operation of a steel wire or a chain that lifts the pallet from the parking frame.

[0003] Therefore, it is important to provide a pallet fall prevention device as a safety measure so that the pallet does not tilt or fall when the steel cable or chain on which the pallet is lifted is cut by accident. is there.

Conventionally, as a pallet drop prevention device, a pin or a hook that engages with a pallet is operated by a device using an air cylinder, a hydraulic cylinder, a solenoid, or the like. A circuit was required, and the control circuit failed, and the reliability of the safety device was lost.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and has a simple and robust construction with a small number of parts to improve the reliability of the apparatus and to raise and lower the pallet. It is an object of the present invention to provide a fall prevention device for a vertically moving pallet having a simple structure that mechanically operates following the above.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a device for preventing a fall of a lifting pallet according to the present invention is provided so as to protrude from a side surface of a pallet 3 which moves up and down along a column 2 of a multi-story parking device 1. In a fall pallet drop prevention device in which the overhanging portion 4 is hung at a stop position on each floor, a hook 6 is attached to a protruding shaft 5 fixed to a side surface of the support column 2 and a restricting piece 7 is attached to a front surface of the hook 6. The hook 6 is swingably supported, and the hook 6 is suspended by its own weight.
And a concave portion 6b capable of allowing the protrusion 4 of the pallet 3 to move up and down, and a lower edge of the hook 6 on the pallet 3 side is provided with the pallet. An inclined side 6c is formed which is pushed by the upper edge of the overhang portion 4 and slides when the overhang 3 is raised, and the hook 6 is rolled over to the pallet 3 near the lower part of the protruding shaft 5. A protrusion 8 for locking the restricting piece 7 is formed, and an upper side surface of the overhanging portion 4 of the pallet 3 is provided with an elevation angle engaging with a leading edge of the restricting piece 7 rolled over to the pallet 3 side. A guide piece 9 having an inclined surface 9a is provided so as to protrude.
b, within a range in which the overhanging portion 4 rises, the restricting piece 7 is separated from the inclined surface 9a of the guide piece 9 from a state in which it is engaged on the inclined surface 9a of the guide piece 9. Is what you do.

[0007]

In the construction of the present invention described above, the hook 6 is pushed down on the inclined side 6c by the operation of pushing down the restricting piece 7 while being engaged with the projecting piece 8 and the action of pushing up the hook 6 on the inclined side 6c.
In each case, the hook piece 6a is rotated in a direction in which the hook piece 6a is retreated from the elevating path of the overhang portion 4. In other states, the hook 6 is in a hanging state due to its own weight.

When the pallet 3 rises and the upper edge of the overhang portion 4 starts to contact the inclined side 6c of the hanging hook 6 (FIG. 3).
State), the inclined side 6c is pushed by the upper edge of the overhang portion 4 and slides. Due to this sliding movement, the hook 6 becomes the overhanging portion 4.
, And the upward path of the overhang portion 4 is opened.

When the pallet 3 is further raised, the overhang portion 4 separates from the inclined side 6c of the hook 6 and enters the concave curved portion 6b of the hook 6. At this time, the hook 6 returns to the original hanging state by its own weight, and the hook 6
a is brought into a standby state (the state shown in FIG. 4).

On the other hand, the regulating piece 7 is pushed up by the inclined surface 9a of the guide piece 9 and pivots in a direction away from the protruding piece 8, but even if the pallet 3 falls due to an unexpected situation, the pallet 3 The overhanging portion 4 is hooked on the hook 6a of the hook 6 to prevent the pallet 3 from falling.

When the pallet 3 is lowered, when the pallet 3 is slightly lifted within the range of the overhanging portion 4 within the concavely curved portion 6b of the hook 6, the guide piece 9 separates above the regulating piece 7 and 7 is released from the guide piece 9, rolls over by its own weight, and is locked by the projecting piece 8 of the hook 6.

When the pallet 3 is lowered in this state, the lower end of the guide piece 9 pushes down the leading edge of the regulating piece 7, and at the same time, the hook 6 is rotated by the pushing down of the protruding piece 8, so that the hook 6a of the hook 6 is moved. Withdrawing from the descending path of the overhang part 4,
Release the pallet 3 freely.

When the pallet 3 is lowered, following the lowering operation of the pallet 3, the restricting piece 7 slides on the inclined surface 9a of the guide piece 9 to gradually bring the hook 6 into its original hanging state by its own weight. The restriction piece 7 is also returned.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a multi-story parking device equipped with a device for preventing falling of a lifting pallet according to the present invention. FIG. 2 is a front view of FIG. 3 to 6 show a front view of the fall prevention device of the lifting pallet according to the present invention. FIG. 3 shows an operation state of the fall prevention device as the pallet rises, and FIG. 4 shows a stopped state of the pallet (hook). FIG. 5 shows a state where the pallet is slightly lifted to lower the pallet and the guide piece is released from the regulating piece, and FIG. 6 shows a state where the pallet is lowered. FIG. 7 is a side view of FIG.

The multi-story multi-story parking device shown in FIG. 1 is equipped with a device for preventing a pallet from falling according to the present invention.

In this multi-story parking system, the upper pallets 3a and the third pallets 3b have cross beams 13, 1 at their upper ends, respectively.
The two vertical columns 14, 14 connected by 3 are supported in a cantilever manner by being aligned with the two columns 2, 2 of the parking device 1 arranged side by side on the ground.
A horizontal beam 13 and vertical columns 14, 14 are attached to the outside of the
The third-floor pallet 3b has vertical columns 14,
14 is attached.

Then, a motor 12 and a speed reduction mechanism 12a are provided on the columns 2, 2, and the chain 11 connected to the center of the cross beam 13 of the third floor pallet 3b is pulled by the motor 12 via a sprocket in the speed reduction mechanism 12a. Third floor pallet 3
Each of the vertical columns 14, 14 of b has a lifting hook 14a,
14a, the shafts 15, 15 are inserted through the hooks 14a, 14a, respectively.
The lower ends 15b, 15b of 5 are connected to the second floor pallet 3a, and the upper ends are fixed with locking rings 15a, 15a.

First, when the third-floor pallet 3b is raised, the second-floor pallet 3a is kept on the ground, and the lifting hooks 14a, 14a are lifted while sliding on the shafts 15, 15, so that the lifting hooks 14a, 14a are lifted. At the time when the abutment ring 14a comes into contact with the locking rings 15a, 15a, the third-floor pallet 3b
Rises, the second floor pallet 3a also rises.

In such a parking device, the fall prevention device 10 is configured such that a hook 6 to be described later is hooked on an overhanging portion 4 fixed on the side surface of the cross beam 13 with respect to the second floor pallet 3a. Regarding 3b, the hook 6 is hooked to the overhanging portion 4 fixed along the lower end surface of the pallet 3b.

However, the above-described parking device is an example to which the fall prevention device of the lifting pallet according to the present invention is applied, and the present invention is not limited to such a parking device. In the following description, the parking device 1 will be described. The device will be described as a fall prevention device for the lifting pallet 3 which moves up and down along the column 2 of FIG.

In FIG. 3, a protruding shaft 5 is fixedly mounted on the side surface of the support column 2 of the parking device 1. As shown in FIG. 7, the protruding shaft 5 fixes the pedestal 15 to the side surface of the support column 2.
A large diameter pin 5a fixed to the main body and a bolt 5b fastened to the center of the end face of the large diameter pin 5a. A collar 17 having a large diameter is inserted into the bolt 5b to prevent the collar 17 from slipping out, and a through hole formed in the restricting piece 7 is loosely fitted to the outside thereof,
Further, the hook 6 and the regulating piece 7 swing independently of each other by the structure in which the washer 19 is inserted on the outside.

As shown in FIG. 3, the hook 6 is formed in a hook shape by a flat plate, and a large diameter pin 5
a through-hole to be inserted through the pallet 3 has a concave portion 6b in the shape of a hook, and the lower portion thereof has a flat surface for locking the overhanging portion 4 of the pallet 3. 6a, and an inclined side 6c is formed on the lower edge of the hook 6 on the pallet 3 side. An inclined side 4 a facing the inclined side 6 c of the hook 6 is formed on the upper edge of the overhang portion 4.

When the hook 6 is inserted into the large-diameter pin 5a to be in a natural state, the hook 6 hangs down by its own weight, but the side of the support column 2 moves from the hanging state of the hook 6 toward the pallet 3 in the direction. The locking pin 21 is fixed to the stop position to restrict the swing of the hook 6 in the hanging state.

The restricting piece 7 forms a long plate, and the side opposite to the through hole formed in the vicinity of one end is cut off at both corners to form a substantially smooth leading edge 7a. When the restricting piece 7 is inserted into the bolt 5b to be in a natural state as described above, the restricting piece 7
Rolls over due to its own weight.

Further, on the front surface of the hook 6, a protruding piece 8 is provided near the lower side of the protruding shaft 5 and at a position where the overturn of the regulating piece 7 is locked in a substantially horizontal state in the direction of the pallet 3.

On the other hand, at a predetermined position on the upper surface of the overhang portion 4 of the pallet 3, a guide piece 9 having an elevation-angled inclined surface is protruded. The position at which the guide piece 9 is mounted is changed from the state in which the regulating piece 7 is engaged on the slope 9 a of the guide piece 9 within the ascending range of the overhang portion 4 within the concave curved portion 6 b of the hook 6. 9a.

More specifically, as shown in FIG. 4, when the overhang portion 4 is in the vicinity of the hook portion 6a of the hook 6 (at the stop position of the pallet 3), the leading edge 7a of the regulating piece 7 is guided. The guide piece 9 is provided at a position where the guide piece 9 is engaged with the inclined surface 9 a of the piece 9 so that the restriction piece 7 does not separate from the guide piece 9. When the pallet 3 is slightly lifted in this state, as shown in FIG. 5, the overhanging portion 4 moves upward in the concavely curved portion 6b of the hook 6, and at this time, the restricting piece 7 separates from the guide piece 9 and moves by its own weight. It rolls over and is locked by the protruding piece 8.

The operation of the apparatus for preventing the falling of the lifting pallet constructed as described above will be described with reference to FIGS.
First, in FIG. 3, the pallet 3 is rising from below, and the guide piece 9 is located near the lower part of the regulating piece 7 and the hook 6
Is in a hanging state without being affected by the restricting piece 7.

When the pallet 3 further rises, the inclined side 4a of the overhang portion 4 is changed from the state shown in FIG.
, The sliding friction is generated between the two inclined sides 4a and 6c, and the hook 6 is slid in the direction of retreating from the passage of the overhanging portion 4 to rotate, and then, as shown in FIG.
The overhanging portion 4 enters the concave portion 6b of the hook 6 and
Returns to its original hanging state due to its own weight.

At the time of this return operation, the hook 6 comes into contact with the locking pin 21 and immediately stops at the fixed position without any unnecessary swing.

At this time, the guide piece 9 is held in contact with the front end edge 7a of the restricting piece 7 while keeping its elevation inclined surface 9a in contact with the restricting piece 7.
Is rotated in a direction away from the protruding piece 8.

This state is the stop position of the pallet 3 on each floor, and the hook 6 is in a hanging state because it is not affected by the restricting piece 7, and the hook 6 is always hooked below the overhanging portion 4 of the pallet 3. The unit 6a is brought into a standby state. Thus, even if the pallet 3 is dropped due to an unexpected situation, the hook 6a of the hook 6 receives the overhanging portion 4 of the pallet, thereby preventing the pallet 3 from falling.

When the pallet 3 is slightly lowered when the pallet 3 is lowered, the restricting piece 7 is separated from the guide piece 9 and returns to the rollover state locked by the projecting piece 8. In this state, as shown in FIG. 6, when the pallet 3 is lowered, the guide piece 9 comes into contact with the leading edge 7a of the control piece 7 and pushes down the control piece 7, but the control piece 7 is locked by the protruding piece 8. Because
The restricting piece 7 rotates the hook 6 at the same time in the retreating direction from the passage of the overhang portion 4 while rotating, so that the pallet 3 can be freely lowered thereafter.

When the pallet 3 descends, the leading edge 7a of the regulating piece 7 follows the descending operation of the pallet 3 while sliding on the inclined surface 9a of the guide piece 9, and the hook 6 is moved by its own weight. Since the hook 6 can be returned to the original hanging state gradually, the hook 6 can be returned at once and the hook pin 2 can be returned.
1, or when the locking pin 21 is not provided, the collision with the pallet 3 can be prevented.

Thereafter, the hook 6 returns to the hanging state, and at the same time, the restricting piece 7 also returns to the rollover state locked by the protruding piece 8, so that the pallet 3 is again raised as shown in FIG. Can be.

[0037]

[Effects of the Invention] As described above, according to the lifting pallet fall prevention device of the present invention, the machine is extremely simple and robust compared with the conventional safety device using an air cylinder, a hydraulic cylinder, a solenoid, and the like. Since the operation follows the pallet elevating operation, a control circuit which causes a failure is not required, and the reliability is automatically activated by the pallet elevating operation of the parking device. A highly reliable safety device can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a multi-story parking device equipped with a device for preventing falling of a lifting pallet according to the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a front view showing an operation state of the fall prevention device associated with the rise of the pallet in the lift pallet fall prevention device according to the present invention;

FIG. 4 is a front view showing a stopped state of the pallet (a hooked state) in the device for preventing the lifting pallet from falling according to the present invention.

FIG. 5 is a front view showing a state in which the pallet is slightly lifted to lower the pallet and the guide piece is released from the regulating piece in the apparatus for preventing the pallet from falling, according to the present invention.

FIG. 6 is a front view showing the lowered state of the pallet in the device for preventing a pallet from falling according to the present invention;

FIG. 7 is a side view of FIG. 3;

[Description of sign]

DESCRIPTION OF SYMBOLS 1 ... Parking device, 2 ... Prop, 3 ... Pallet, 4 ... Pallet overhang, 4a ... Slant side of overhang, 5 ... Projection shaft, 6
... hook, 6a ... hook hooking part, 6b ... concave part of hook, 6c ... inclined side of hook, 7 ... regulating piece, 7a ... tip edge, 8 ... projecting piece, 9 ... guide piece, 9a ... inclined face 10, a fall prevention device.

Claims (1)

(57) [Scope of request for utility model registration] An apparatus for preventing falling of a lifting pallet in which a projecting portion (4) projecting from a side surface of a pallet (3) ascending and descending along a column (2) of a multi-story parking device (1) is hung at a stop position on each floor. A hook 6 and a restricting piece 7 are swingably supported on a projecting shaft 5 fixedly provided on the side surface of the support column 2 on a front surface of the hook 6 so that the hook 6 is suspended by its own weight. 4 and a concave portion 6b which allows the overhanging portion 4 of the pallet 3 to move up and down. The lower edge of the hook 6 on the pallet 3 side has An inclined side 6c which is pushed by the upper edge of the overhang portion 4 and slides when the pallet 3 is lifted is formed. Further, in the vicinity of the hook 6 below the protruding shaft 5, the hook 6 rolls over to the pallet 3 side. Forming a protruding piece 8 for locking the certain restricting piece 7 On the other hand, on the upper side surface of the overhang portion 4 of the pallet 3, a guide piece 9 having an elevation inclined surface 9a which is engaged with the leading edge of the regulating piece 7 rolled over to the pallet 3 side is protruded. The position where the guide piece 9 is formed is changed from the state in which the regulating piece 7 is engaged on the inclined surface 9a of the guide piece 9 within the ascending range of the overhang portion 4 within the concavely curved portion 6b of the hook 6. A fall prevention device for an elevating pallet, wherein the guide piece 9 is located at a position separated from the inclined surface 9a.