JP2964430B2 - Safety device for multi-story parking machine - Google Patents

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 machine having a parking elevating body suspended by a chain or the like.

[0002]

2. Description of the Related Art Conventionally, multi-story parking machines, such as a multi-story parking device above the ground and a multi-story parking device under the pit (pit type), in which a parking elevating body is suspended by a chain or the like, have been provided. Japanese Unexamined Patent Publication No. Hei 2-108766, Kohei 2-248
No. 50).

In such a multi-story parking machine, a vehicle is parked on the elevating body and these are lifted and lowered together.
Not only is there a predetermined limit to the weight of a vehicle that can be parked due to strength restrictions, but even if the vehicle weight does not exceed that limit, if the vehicle is parked significantly off-center on the elevating body, Since the weight balance is poor, if the elevating body is moved up and down as it is, an excessive load will be applied to only a part of the chain and a part of the body.

[0004] However, in the conventional multi-story parking machine, such a point is not considered at all, and even if the vehicle is parked on the elevating body with a large deviation, the user is not alerted at all. The elevating body could always be raised and lowered. For this reason, in the conventional multi-story parking machine, there is a possibility that an excessive load may be applied only to a part of the chain or a part of the body, and the chain or the body may be damaged or a danger may be caused to the user, There was a possibility that the durability was impaired.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has caused a risk of chain and body damage, reduced durability, and danger due to a vehicle being parked with a large deviation to an elevating body. It is an object of the present invention to provide a safety device for a multi-story parking machine that can prevent the occurrence of an accident.

[0006]

To solve the above-mentioned problems, a first invention of the present invention is to detect a load applied to a chain in a multi-story parking machine in which a parking elevating body is suspended by a chain. A detector, and balance determination means for determining whether or not the eccentricity of the center of gravity of the total weight of the elevating body is within a predetermined allowable range based on an output signal of the detector,
A lifting / lowering inhibiting means for receiving an output signal of the balance determining means and inhibiting the lifting / lowering operation of the lifting / lowering body when the eccentricity exceeds the allowable range.

In a second aspect of the present invention, in the first aspect, when the eccentricity exceeds the allowable range by receiving an output signal of the balance determination means instead of the elevation prevention means. It is configured to include alarm means for issuing an alarm. In addition, it goes without saying that the alarm means may be provided in addition to the elevating means.

Further, a third invention of the present invention relates to a multi-story parking machine in which a parking elevating body is suspended by a chain.
A detector for detecting a load applied to the elevating body by the chain, and determining whether an eccentricity of a center of gravity of a total weight of the elevating body is within a predetermined allowable range based on an output signal of the detector. A balance judging means, and a lift preventing means for receiving an output signal of the balance judging means to prevent the elevating body from moving up and down when the eccentricity exceeds the allowable range. .

Still further, according to a fourth aspect of the present invention, in the third aspect, when the eccentricity exceeds the allowable range by receiving an output signal of the balance determining means instead of the elevation preventing means. And an alarm means for issuing an alarm. In addition, it goes without saying that the alarm means may be provided in addition to the elevating means.

[0010] In the present specification, the chain includes a rope, a wire, and the like in addition to a normal chain. Further, the total weight of the elevating body refers to the total weight of these when the vehicle is parked on the elevating body.

[0011]

According to the first aspect of the present invention, the load applied to the chain suspending the elevating body is detected by the detector, and the weight judging means receiving the output signal of the detector detects the total weight of the elevating body. It is determined whether or not the eccentricity of the center of gravity falls within a predetermined allowable range. Will be blocked. Therefore, if the vehicle is parked with a large offset to the lift, the eccentricity of the center of gravity of the total weight of the lift will exceed the allowable range,
The lifting operation of the lifting body is automatically stopped. For this reason, the chain or the body of the multi-story parking machine is not damaged, the durability is not reduced, and no danger is caused to the user.

According to a second aspect of the present invention, the operation is basically the same as that of the first aspect, except that the lifting / lowering means does not prevent the lifting / lowering operation of the lifting / lowering body. When the eccentricity exceeds the allowable range, an alarm is issued by the alarm unit that receives the output signal. Therefore, if the vehicle is parked with a large amount of deviation from the elevator, the user will be alerted.Although the lifting operation of the elevator is not automatically prevented, the user may lift the elevator. Disappears. Therefore, similarly to the first invention, the chain and the body of the multi-story parking machine are not damaged, durability is not reduced, and no danger is caused to the user.

Further, according to the third invention of the present invention, it is basically the same as the first invention, and simply detects the load applied to the chain by the detector (the first invention) or uses the chain to detect the load. Detecting the load applied to the lifting body (third invention)
The only difference is that the weight determination means determines on the basis of the output signal.

Furthermore, according to the fourth invention of the present invention, it is basically the same as the second invention, and the detector simply detects the load applied to the chain (the second invention) or the chain. The only difference is whether the load applied to the elevating body is detected (fourth invention), and what output signal is determined by the weight determination means based on the output signal.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

(First Embodiment) First, a first embodiment shown in FIGS. 1 to 4 will be described.

The first embodiment shows an example in which the present invention is applied to a two-level above-ground parking device X as a multi-story parking machine.

As shown in FIG. 1, the ground-type two-stage parking device X has an installation surface 1 as a single stage, and is provided between columns 2, 3, 4, and 5 standing upright at an appropriate interval on the installation surface 1. A parking pallet 10 serving as a parking elevating body is suspended by the lifting chains 6 and 7 and the balance chains 8 and 9, and the parking pallet 10 is configured to rise from the installation surface 1 and descend to the installation surface 1.

More specifically, a drive shaft 11 is supported between the upper ends of the columns 2 and 3, and a drive sprocket 12 is provided at one end of the drive shaft 11. The drive shaft 11 is supported by the drive sprocket 12 and the column 2. A drive chain 14 is suspended between the drive chain 14 and the drive shaft of the motor 13. Then, hoisting sprockets 15 and 16 are provided at both ends of the drive shaft 11, and the lower ends of the elevating chains 6 and 7 suspended on the hoisting sprockets 15 and 16 are fixed to the parking pallet 10. One end of the balance chain 8 is fixed to the upper end of the column 4, and the balance chain 8 is suspended on guide sprockets 19 and 17 provided on the parking pallet 10, and the other end is fixed to the base of the column 2. Further, the balance chain 9
Has one end fixed to the upper end of the column 5, suspended on guide sprockets 20, 18 provided on the parking pallet 10, and the other end fixed to the base of the column 3.

Further, although not shown in FIG. 1, as shown in FIG.
0, a position detector 220 such as a micro switch for detecting an upper limit position and a lower limit position of the parking pallet 10, and a drive control device 230 for driving and controlling the motor 13 in response to signals from the operation device 210 and the position detector 220. When the user operates the operation device 210, the motor 13 is controlled so that the parking pallet 10 automatically stops at a predetermined upper limit position or lower limit position. When a vehicle enters and leaves the installation surface 1, the parking pallet 10 is stopped at the upper limit position. When a vehicle enters and exits the parking pallet 10, the vehicle is once taken out of the installation surface 1 and then left. The parking pallet 10 is stopped at the lower limit position (substantially the position of the installation surface 1).

In the case of the first embodiment, as shown in FIG. 4, the safety device according to the present invention includes a detector for detecting loads applied to the lifting chains 6, 7 and the balance chains 8, 9, respectively. The eccentricity of the center of gravity of the total weight of the parking pallet 10 serving as the elevating body is determined based on the output signals A, B, C, D of the detectors 22, 23, 24, 25 and the detectors 22, 23, 24, 25. A balance judging means for judging whether or not the pallet is within an allowable range; and an elevating means for receiving an output signal of the balance judging means to prevent the parking pallet from moving up and down when the eccentricity exceeds a predetermined allowable range. It comprises a blocking means 36 and an alarm means 37 which receives an output signal of the balance judging means 35 and issues an alarm when the eccentricity exceeds a predetermined allowable range.

As the detector 22, a pin-type load cell manufactured by Orientec Co., Ltd. (model name: SPN-8-T)
03 B) is used. The pin type load cell is
Four or eight strain gauge elements are bonded to the inner surface of a tubular shaft body, and the load applied to the shaft body is detected by converting the shear strain of the shaft body into an electric signal by the strain gauge element. Things. As shown in FIGS. 1 to 3, the detector 22 serving as a pin-type load cell is provided at a fixing portion of the lower end of the elevating chain 6 to the parking pallet 10, and is attached to the elevating chain 6 by the detector 22. The applied load is detected. That is, the shaft of the detector 22, which is a pin-type load cell, is supported on the parking pallet 10 by the brackets 380 and 390, and the mounting bracket 6a provided at the lower end of the elevating chain 6 is rotatable with respect to the shaft. Attached to. In addition, the pin type load cell is similarly used as the detector 23, and the detector 23 is provided at a fixing portion of the lower end of the elevating chain 7 to the parking pallet 10 as shown in FIG. Chain 7 for lifting
Is detected. Similarly, the pin type load cells are used as the detectors 24 and 25, and the detector 24 is provided at a fixing portion of the other end of the balance chain 8 with respect to the base 2 of the support.
4, the load applied to the balance chain 8 is detected. Further, the detector 25 is provided at a fixing portion of the other end of the balance chain 9 to the base 3, so that the load applied to the balance chain 9 is detected by the detector 25.

In the case of the first embodiment, as shown in FIG.
Amplifiers 26, 27, 28, 29 for amplifying output signals A, B, C, D of 23, 24, 25;
A / D converters 30, 31, 32, and 33 for A / D converting output signals of 7, 28, and 29, and A / D converters 30, 3
And a microcomputer 34 to which output signals 1, 32, and 33 are input.

In the case of the first embodiment, if the center of gravity of the total weight of the parking pallet 10 is not eccentric in the left-right direction V of the parking pallet 10, each of the lifting chains 6,
Since the sum of the loads applied to the balance chains 7 and 9 should match the sum of the loads applied to the respective balance chains 8 and 9, the microcomputer is used to determine the degree of eccentricity in the left-right direction V. 34 is |
｛(A + B) / 2｝-(C + D) | ≦ β (corresponding to whether the eccentricity of the center of gravity of the total weight of the parking pallet 10 in the left-right direction V is within a predetermined allowable range). If it is determined that | {(A + B) / 2} − (C + D) | ≦ β, a signal is output to the lifting / lowering prevention means 36 and the alarm means 37 to activate them. In the above equation, A, B, C and D are detectors 22 and 2
The values corresponding to the output signals A, B, C and D of 3, 24 and 25 are shown, and the same applies to the following expressions. In the above equation, β is a constant that determines the allowable range and is determined in consideration of the strength constraint. The flowchart for executing the above-described determination by the microcomputer 34 is clear, and the description thereof is omitted.

Further, in the case of the first embodiment, the raising / lowering prevention means 36 is constituted by a relay 38, and although not shown in detail in the drawing, its contact is provided by the drive control device 2
3 when the relay 38 is actuated by a signal from the microcomputer 34,
Irrespective of the operation of the operation device 210, the driving of the motor 13 is prevented, and the raising / lowering operation of the parking pallet 10 is prevented. However, the raising / lowering prevention means 36 is not limited to a relay, and various interlock circuits and the like can be used.

Further, the alarm means 37 is activated by a signal of the microcomputer 34 to issue an alarm, and can use a siren, a buzzer, a lamp or the like.

In the present invention, the lifting / lowering inhibiting means 36
And only one of the alarm means 37 may be provided.

Note that the microcomputer 34
In the case of the first embodiment, it is also determined whether or not the total weight of the parking pallet 10 is within a predetermined allowable range.

That is, in the case of the first embodiment, the sum of the loads applied to the elevating chains 6 and 7 corresponds to the total weight of the parking pallet 10. Therefore, the microcomputer 34 determines that A + B ≦ α (corresponding to whether or not the total weight of the parking pallet 10 is within a predetermined allowable range), and when A + B ≦ α is not satisfied, a signal is sent to the lifting / lowering prevention means 36 and the alarm means 37. They are output and activated. In the above equation, α is a constant that determines the allowable range and is determined in consideration of the constraint on strength.

However, in the present invention, it is not necessary to determine whether the total weight of the parking pallet 10 is within a predetermined allowable range.

The structure of the weight judging means 35 is not limited to the structure shown in FIG. 4. For example, it is needless to say that the weight judging means 35 can be constituted by using a gate circuit or the like without using the microcomputer 34.

According to the safety device according to the first embodiment having the above-described structure, the elevating chains 6 and 7 and the balance chains 8 and 9 which suspend the parking pallet 10 as the elevating body for parking.
Is detected by the detectors 22, 23, 24, 25, and the output signals A,
The balance determining means 35 receiving B, C and D determines whether or not the eccentricity of the center of gravity of the total weight of the parking pallet 10 is within a predetermined allowable range.
Raising / lowering prevention means 36 and alarm means 37 receiving the output signal of
Accordingly, when the total weight of the parking pallet 10 exceeds the allowable range, the raising / lowering operation of the parking pallet 10 is prevented and an alarm is issued. Therefore, if the vehicle is parked on the parking pallet 10 with a large offset, the eccentricity of the center of gravity of the total weight of the parking pallet 10 exceeds the allowable range, and the vertical movement of the parking pallet 10 is automatically prevented. An alarm is issued at the same time. For this reason,
The chains 6, 7, 8, 9 and the body of the multi-story parking machine are not damaged, the durability is not reduced, and no danger is caused to the user.

When only the alarm means 37 is provided without the lifting / lowering preventing means 36, the user is alerted, although the raising / lowering operation of the parking pallet 10 is not automatically prevented. The user no longer raises and lowers the parking pallet 10, and similarly, the chains 6, 7,
It does not damage the bodies of 8, 9 or the multi-story parking machine, reduce the durability, or cause danger to the user.

Further, according to the first embodiment, even when the total weight of the parking pallet 10 is not within the predetermined allowable range, the raising / lowering preventing means 36 and the alarm means 37 prevent the raising / lowering operation of the parking pallet 10. And an alarm is issued. Therefore, even if the vehicle is not parked significantly off-center, if the weight of the vehicle exceeds the limit, the raising / lowering operation of the parking pallet 10 is automatically prevented and an alarm is issued. For this reason, it is possible to prevent damage to the chain and the body, reduction in durability and danger due to the weight of the vehicle exceeding the limit, which is more desirable.

(Second Embodiment) Next, a second embodiment of the present invention shown in FIGS. 5 and 6 will be described.

This second embodiment shows an example in which the present invention is applied to an underground retractable two-stage parking device Y as a multi-story parking machine.

As shown in FIG. 5, the underground storage type two-stage parking device Y includes a parking elevating body 51 in a ground storage part 50 formed by excavating the ground surface and the like, with chains 52, 53, 54,
The elevator 51 is configured to be lifted from the basement storage unit 50 and lowered into the basement storage unit 50.

More specifically, the elevating body 51 is composed of an upper parking pallet 56, a lower parking pallet 57, and columns 75, 76, 77, 78 for connecting between them. Then, the chains 52, 53, 54, 5
5 are fixed to substantially four corners of the lower parking pallet 57. Further, a drive shaft 58 is provided at a position in the basement storage section 50 which does not hinder the elevating body 51 from moving up and down, and guide sprockets 59, 60, 61,
There are provided hoisting sprockets 63, 64, 65, 66 in which the chains 52, 53, 54, 55 suspended on the 62 are engaged, and further, a driving sprocket 67 provided at an appropriate position on the driving shaft 58 and driving of a motor 68 for lifting and lowering. A chain 70 is suspended between the sprocket 69 and the chains 52, 53, 54, 55 so that the chains 52, 53, 54, 55 can be evenly wound up. In addition, in FIG. 5, 710 is a winding sprocket.

Although not shown in FIG. 5, as shown in FIG. 6, similarly to the above-mentioned two-level parking device X, the operating device 80 and the upper limit position of the elevating body 51 (the lower parking pallet 57 A position detector 8 such as a microswitch for detecting a lower position (a position where the upper parking pallet 56 is approximately the same height as the ground surface) and a lower limit position (a position where the upper parking pallet 56 is approximately the same height as the ground surface).
1, a drive control unit 82 that receives signals from the operation device 80 and the position detector 81 and controls the driving of the motor 68. The motor 68 is controlled by a user operating the operation device 80. Then, the lifting / lowering body 51 is automatically stopped at the upper limit position or the lower limit position.

Then, in the case of the second embodiment, the safety device according to the present invention, as shown in FIG.
Detectors 71, 72, 73, 74 for detecting loads applied to 53, 54, 55, respectively;
Balance determining means 83 for determining whether or not the eccentricity of the total weight of the elevating body 51 is within a predetermined allowable range based on the output signals E, F, G and H of 3, 74; An elevating prevention means 84 for receiving the output signal of 83 and preventing the elevating body 51 from moving up and down when the eccentricity exceeds a predetermined allowable range; and receiving the output signal of the balance determining means 83 to adjust the eccentricity to a predetermined value. Alarm means 85 for issuing an alarm when the value exceeds the allowable range.

As the detectors 71, 72, 73, and 74, the pin-type load cells are used similarly to the detector 22 and the like. The detectors 71, 72, 73, and 74 are, as shown in FIG. Loads applied to the chains 52, 53, 54, and 55 are respectively detected by detectors 71, 72, 73, and 74, which are provided at fixing portions of the tips of 52, 53, 54, and 55 to the lower parking pallet 57. It has become so.

In the case of the second embodiment, as shown in FIG. 6, the balance judging means 83 includes the detectors 71, 72, and 72, as in the case of the balance judging means 35 shown in FIG.
Amplifiers 86, 87, 88, 89 for amplifying output signals E, F, G, H of 73, 74;
A / D converter 9 for A / D converting the output signals of 8, 89
0, 91, 92, 93 and the A / D converters 90, 91,
And a microcomputer 94 to which output signals 92 and 93 are input.

In the case of the second embodiment, the lift 5
If the center of gravity of the total weight of 1 is not eccentric in the left-right direction V of the elevating body 51, the sum of the loads applied to the chains 52, 53 and the chains 52, 53, 54, 55
Should be equal to one-half of the sum of the loads applied to the components, the microcomputer 34 calculates | (E + F) to determine the degree of eccentricity in the left-right direction V.
It is determined whether − {(E + F + G + H) / 2} | ≦ θ (corresponding to whether or not the eccentricity of the center of gravity of the total weight of the lifting / lowering body 51 in the left-right direction V is within a predetermined allowable range),
When | (E + F) − {(E + F + G + H) / 2} | ≦ θ, a signal is output to the lifting / lowering prevention means 84 and the alarm means 85 to activate them. In addition,
| (E + F)-{(E + F + G + H) / 2} | ≦ θ
Instead of judging whether or not, for example, | (G +
H) − ｛(E + F + G + H) / 2｝ | ≦ κ, or | ｛(E + F) − (G +
H)｝ / (E + F + G + H) | ≦ λ may be determined, or (E + F) ≦ μ and (G +
H) It may be determined whether or not ν. In the above equation, θ, κ, λ, μ, and ν are constants that determine the allowable range, and are determined in consideration of constraints on strength.

In the case of the second embodiment, the elevating body 51
If the center of gravity of the total weight is not eccentric in the front-rear direction W of the elevating body 51, the sum of the loads applied to the chains 52, 54 and the sum of the loads applied to the chains 52, 53, 54, 55 Since the と should match, the microcomputer 34 calculates | (E + G) − to determine the eccentricity in the front-rear direction W.
｛(E + F + G + H) / 2｝ | ≦ ξ (corresponding to whether the eccentricity of the center of gravity of the total weight of the lifting / lowering body 51 in the front-rear direction W is within a predetermined allowable range),
Even when | (E + G) − {(E + F + G + H) / 2} | ≦ ξ, a signal is output to the raising / lowering prevention means 84 and the alarm means 85 to activate them. | (E + G)-{(E + F + G + H) / 2} | ≦｝
Instead of determining whether or not
+ H) − {(E + F + G + H) / 2} | ≦ π or | ｛(E + G) − (F +
H)｝ / (E + F + G + H) | ≦ ρ or not, or (E + G) ≦ σ and (F +
H) It may be determined whether or not τ. In the above equation, ξ, π, ρ, σ, and τ are constants that determine the allowable range and are determined in consideration of constraints on strength.

In the present invention, the balance judgment means 83
May be determined for only one of the eccentricity in the left-right direction V and the eccentricity in the front-rear direction.

Further, the raising / lowering prevention means 84 is also constituted by a relay 95, as in the first embodiment.
Although not shown in detail in the drawing, when the contact is inserted into an appropriate place in the circuit of the drive control device 82 and the relay 95 is operated by a signal of the microcomputer 94, the operation of the operation device 80 is performed. Irrespective of the above, the driving of the motor 68 is prevented, and the elevating operation of the elevating body 51 is prevented.

Further, as in the case of the first embodiment, the alarm means 85 is also provided with the microcomputer 94.
It is activated by the signal of and emits an alarm,
A siren, a buzzer, a lamp, or the like can be used.

It should be noted that only one of the raising / lowering preventing means 84 and the alarm means 85 may be provided.

Note that the microcomputer 34 is
In the case of the second embodiment, it is also determined whether or not the total weight of the elevating body 51 is within a predetermined allowable range.

That is, in the case of the second embodiment, the sum of the loads applied to the chains 52, 53, 54, 55 corresponds to the total weight of the elevating body 51. E + F + G + H ≦ η
(Corresponding to whether the total weight of the elevating body 51 is within a predetermined allowable range), and E + F + G + H ≦
When not η, the lifting / lowering prevention means 84 and the alarm means 8
5 to output signals. In the above equation, η is a constant that determines the allowable range and is determined in consideration of the strength constraint.

However, in the present invention, the determination as to whether or not the total weight of the elevating body 51 is within a predetermined allowable range may not be performed.

The configuration of the balance determining means 83 is not limited to the configuration shown in FIG. 6, but may be configured using a gate circuit or the like without using the microcomputer 94.

According to the safety device according to the second embodiment having the above-described structure, the chain 5 suspending the elevating body 51 for parking.
The loads applied to the detectors 71, 7
2, 73, 74, the detectors 71, 72, 7
The balance determination means 83, which has received the output signals E, F, G, and H of 3, 74, determines whether the eccentricity of the center of gravity of the total weight of the lifting / lowering body 51 is within a predetermined allowable range, and determines the balance. Ascent / descent prevention means 84 receiving the output signal of the means 83
When the eccentricity of the center of gravity of the total weight of the elevating body 51 exceeds the allowable range by the alarm means 85, the elevating body 51
Is stopped and an alarm is issued. Therefore, if the vehicle is parked on the lifting body 51 with a large offset, the eccentricity of the center of gravity of the total weight of the lifting body 51 exceeds the allowable range, and the lifting operation of the lifting body 51 is automatically prevented. An alarm is issued at the same time. For this reason,
The chains 52, 53, 54, 55 and the body of the multi-story parking machine are not damaged, the durability is not reduced, and no danger is caused to the user.

When only the warning means 85 is provided without the lifting and lowering preventing means 84, the user is alerted, although the raising and lowering operation of the lifting and lowering body 51 is not automatically prevented. The user does not raise or lower the elevating body 51, and similarly, the chains 52, 53, 54, 55
Or the body of a multi-story parking machine may be damaged, durability may be reduced,
It does not pose any danger to the user.

Further, according to the second embodiment, the lifting body 5
Even when the total weight of the lifting device 51 is not within the predetermined allowable range, the lifting / lowering means 84 and the warning means 85 prevent the lifting / lowering operation of the lifting / lowering body 51 and issue an alarm. Therefore, even if the vehicle is not parked significantly off-center,
If the weight of the vehicle exceeds the limit, the elevator 5
1 is stopped and an alarm is issued.
For this reason, it is possible to prevent damage to the chain and the body, reduction in durability and danger due to the weight of the vehicle exceeding the limit, which is more desirable.

(Third Embodiment) Next, FIG. 7 and FIG.
A third embodiment of the present invention will be described.

The third embodiment shows an example in which the present invention is applied to an underground retractable three-stage parking device Z as a multi-story parking machine.

As shown in FIG. 7, the underground stowable three-stage parking device Z has a parking elevating body 101 in which an elevating body 101 is lifted and lowered in an underground storage part 100 formed by excavating the ground surface or the like.
03 and the balance chains 104 and 105, the elevating body 101 is configured to rise from the underground storage unit 100 and descend into the underground storage unit 100.

More specifically, the elevating body 101 is composed of an upper parking pallet 106, a middle parking pallet 107, a lower parking pallet 108, and columns 109 for respectively connecting these. Lifting sprockets 110, 111, 112, 113 are provided on both sides of the lower surface of the front part and the rear part of the lifting body 101, and the lifting sprockets 110, 112 are attached to the lifting chains 10.
2 is suspended and a lifting sprocket 11
The elevating chain 103 is suspended from 1,113. One end of each of the elevating chains 102, 103 is fastened near the ground position of the underground storage unit 100 via guide sprockets 114, 115, each of which 102a, 103a is pivotally supported at a position near the ground of the underground storage unit 100, The other ends 102b and 103b are free to be wound. That is, the elevating body 101 in the underground storage unit 100
A drive shaft 116 is rotatably supported at a position where the drive shaft 116 does not hinder the elevating and lowering. The hoisting sprockets 117 and 118 for winding the other ends 102b and 103b of the elevating chains 102 and 103 are provided on the drive shaft. A chain 122 is suspended between a driving sprocket 119 provided and a driving sprocket 121 of a lifting / lowering motor 120, and the lifting / lowering body 101 is rotated by forward / reverse rotation of the motor 120.
Is designed to move up and down. The balance chain 104 is suspended by guide sprockets 123 and 125 provided on the lower surface of the elevating body 101, and both ends thereof are fixed to a position near the ground and below the basement storage unit 100, respectively. , Lifting body 10
1 are suspended on guide sprockets 124 and 126 provided on the lower surface of the base 1, and both ends thereof are fixed to a position near the ground and below the basement storage unit 100, respectively, so that the balance of the elevating body is maintained. .

Further, although not shown in FIG. 7, as shown in FIG.
An operating device 130, an upper limit position of the elevating body 101 (a position where the lower parking pallet 108 is substantially at the same height as the ground surface),
The middle position (the position where the middle parking pallet 107 is substantially at the same height as the ground surface) and the lower limit position (the upper parking pallet 10
A position detector 131 such as a microswitch for detecting a position at which the position 6 is substantially at the same height as the ground surface);
The motor 1 receives a signal from the position detector 131 and
20 is provided with a drive control device 132 for controlling the drive of
When the user operates the operation device 130, the motor 120 is controlled to automatically stop the elevating body 101 at the upper limit position, the middle position, or the lower limit position.

In the case of the third embodiment, as shown in FIG. 8, the safety device according to the present invention comprises detectors 133 for detecting the load applied to the elevating body 101 by the elevating chains 102 and 103, respectively. 134,135,136
And whether the eccentricity of the center of gravity of the total weight of the lifting / lowering body 101 is within a predetermined allowable range based on the output signals J, K, L, M of the detectors 133, 134, 135, 136. Receiving the output signal of the balance determining means 137, and determining whether the eccentricity of the center of gravity of the total weight of the lifting body 101 exceeds a predetermined allowable range.
1 and an elevating body 101 receiving the output signal of the balance judging means 137.
Alarm means 139 for issuing an alarm when the degree of eccentricity of the center of gravity of the total weight exceeds a predetermined allowable range.

The detectors 133, 134, 135, 13
6, the pin-type load cell is used similarly to the detector 22 and the like, and the detectors 133, 134, 135, and 136 are used.
As shown in FIG. 7, the lifting sprocket 11
0, 111, 112, and 113 are provided as shaft portions, respectively, and the elevating chain 101 is used by the elevating chains 102 and 103 by the detectors 133, 134, 135, and 136.
The load applied to each is detected.

In the case of the third embodiment, as shown in FIG. 8, the balance determining means 137 is provided with the detectors 133, 1 as in the case of the balance determining means 83 shown in FIG.
Amplifiers 140, 141, 142, and 143 for amplifying the output signals J, K, L, and M of the amplifiers 34, 135, and 136, and A / D output signals of the amplifiers 140, 141, 142, and 143.
A / D converters 144, 145, 146, 147 for conversion
And a microcomputer 148 to which output signals of the A / D converters 144, 145, 146, and 147 are input.

In the case of the third embodiment, the lifting body 1
01 is not eccentric in the left-right direction V of the lifting body 101, the lifting sprocket 13
Since the sum of the loads applied to the lifting sprockets 133, 134, 135, and 136 should be equal to 1/2 of the sum of the loads applied to the lifting sprockets 133, the eccentricity in the left-right direction V is determined. In order to perform the above operation, the microcomputer 148 calculates | (J + K) −
It is determined whether or not {(J + K + L + M) / 2} | ≦ e (corresponding to whether or not the eccentricity of the center of gravity of the total weight of the lifting / lowering body 101 in the left-right direction V is within a predetermined allowable range), | (J
+ K)-{(J + K + L + M) / 2} | ≦ e, a signal is output to the lifting / lowering prevention means 84 and the alarm means 85 to activate them. In addition,
| (J + K)-{(J + K + L + M) / 2} | ≦ e
Instead of determining whether or not
M) − {(J + K + L + M) / 2} | ≦ f may be determined, or | ｛(J + K) − (L +
M)｝ / (J + K + L + M) | ≦ g or not, or (J + K) ≦ h and (L +
M) ≦ j may be determined. In the above equation, e, f, g, h, and j are constants that determine the allowable range and are determined in consideration of constraints on strength.

In the case of the third embodiment, the lifting body 10
If the center of gravity of the total weight 1 is not eccentric in the front-rear direction W of the lifting / lowering body 101, each of the lifting sprockets 110,
The total load applied to the chain 112 and the chain 11
Since the sum of the loads applied to 0, 111, 112, and 113 should be equal to 1/2, the microcomputer 34 determines that the eccentricity in the front-rear direction W is | (J + L) − ｛ (J + K + L + M) /
It is determined whether or not 2｝ | ≦ k (corresponding to whether or not the degree of eccentricity of the center of gravity of the total weight of the lifting body 101 in the front-rear direction W is within a predetermined allowable range), and | (J + L) − ｛ (J +
Even when K + L + M) / 2 ／ | ≦ k, a signal is output to the lifting / lowering prevention means 138 and the alarm means 139 to activate them. | (J + L)-
Instead of determining whether {(J + K + L + M) / 2} | ≦ k, for example, | (K + M) − ｛(J + K
+ L + M) / 2｝ | ≦ m may be determined, or | {(J + L) − (K + M)} / (J + K + L
+ M) | ≦ n may be determined,
It may be determined whether (J + L) ≦ p and (K + M) ≦ q. In the above equation, k,
m, n, p, and q are constants that determine the allowable range and are determined in consideration of strength restrictions.

In the present invention, the balance judging means 13
7 may determine only one of the eccentricity in the left-right direction V and the eccentricity in the front-rear direction.

Further, similarly to the case of the first embodiment, the lifting / lowering preventing means 138 is also constituted by a relay 149, and although not shown in detail in FIG. The relay 149 is inserted at an appropriate place in the circuit and is operated by a signal of the microcomputer 148.
Is activated, the drive of the motor 120 is blocked regardless of the operation of the operation device 130 and the like.
1 is prevented from moving up and down.

Further, the alarm means 139 is also provided for the microcomputer 1 as in the first embodiment.
The alarm is activated by the signal 48, and a siren, a buzzer, a lamp, or the like can be used.

It should be noted that only one of the raising / lowering preventing means 138 and the alarm means 139 may be provided.

In the case of the third embodiment, the microcomputer 148 determines whether or not the total weight of the elevating body 101 is within a predetermined allowable range.

That is, in the case of the third embodiment, each of the lifting sprockets 110, 111, 112, and 113 is used.
Since the total load applied to the microcomputer 148 corresponds to the total weight of the elevating body 101, the microcomputer 148
Indicates whether or not J + K + L + M ≦ d (elevator 101
Is determined to be within the predetermined allowable range), and when J + K + L + M ≦ d, a signal is output to the lifting / lowering prevention means 138 and the alarm means 149 to activate them. ing. In the above equation, d is a constant that determines the allowable range and is determined in consideration of the constraint on strength.

However, in the present invention, the elevating body 101
The determination as to whether or not the total weight is within a predetermined allowable range may not be performed.

The structure of the weight determining means 137 is also
The configuration is not limited to the configuration illustrated in FIG. 6, and may be, for example, configured using a gate circuit or the like without using the microcomputer 148.

According to the safety device according to the third embodiment having the above-described structure, the elevating body 1 is moved by the elevating chains 102 and 103.
01 is applied to the detectors 133, 134, 135, 1
36, the detectors 133, 134, 135, 1
The balance determining means 137 which has received the 36 output signals J, K, L and M determines whether or not the eccentricity of the center of gravity of the total weight of the lifting / lowering body 101 is within a predetermined allowable range. Lifting / lowering prevention means 1 receiving the output signal of
When the eccentricity of the center of gravity of the total weight of the lifting / lowering body 101 exceeds the permissible range, the raising / lowering operation of the lifting / lowering body 101 is prevented by the alarm means 139 and an alarm is issued. Therefore, if the vehicle is parked on the lifting body 101 with a large offset, the eccentricity of the center of gravity of the total weight of the lifting body 101 exceeds the allowable range, and the lifting operation of the lifting body 101 is automatically prevented. An alarm is issued at the same time. For this reason, the chains 102, 103, 10
There is no risk that the body of the multi-story parking machine or the multi-story parking machine will be damaged, the durability will not be reduced, and no danger will be caused to the user.

When only the alarm means 139 is provided without the lifting / lowering preventing means 138, the lifting / lowering body 1
01 is not prevented, but the user is alerted, and the user does not move the elevating body 101 up and down.
No damage is caused to the bodies of the vehicles 03, 104, 105 and the multi-story parking machine, the durability is not reduced, and no danger is caused to the user.

Further, according to the third embodiment, the lifting body 1
Even when the total weight of 01 is not within the predetermined allowable range, the lifting / lowering means 138 and the warning means 139 prevent the lifting / lowering operation of the lifting / lowering body 101 and issue an alarm. Therefore, even if the vehicle is not parked significantly off-center, if the weight of the vehicle exceeds the limit, the raising / lowering operation of the lifting / lowering body 101 is automatically stopped and an alarm is issued. For this reason, it is possible to prevent damage to the chain and the body, reduction in durability and danger due to the weight of the vehicle exceeding the limit, which is more desirable.

Although the embodiments of the present invention shown in the drawings have been described above, the present invention is not limited to these embodiments, and is applicable to various types of multi-story parking machines having different lifting systems. is there.

[0078]

According to the present invention, it is possible to prevent the chain and the body from being damaged, the durability from being lowered, and the danger from being prevented due to the fact that the vehicle is parked on the elevating body.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a two-level above-ground parking device.

FIG. 2 is an enlarged view taken along the line II-II in FIG.

FIG. 3 is an enlarged view taken along a line III-III in FIG. 1;

FIG. 4 is a block diagram showing a configuration of a safety device according to one embodiment of the present invention.

FIG. 5 is a schematic perspective view of an underground storage type two-stage parking device.

FIG. 6 is a block diagram showing a configuration of a safety device according to another embodiment of the present invention.

FIG. 7 is a schematic perspective view of an underground retractable three-level parking device.

FIG. 8 is a block diagram showing a configuration of a safety device according to still another embodiment of the present invention.

[Explanation of symbols]

X Two-level parking device above ground (multilevel parking machine) Y Two-level parking device underground storage (multilevel parking machine) Z Three-level parking device underground storage (multilevel parking machine) 10,51,101 Elevating body 22-25,71 -74,133-136 Detector 35,83,137 Balance determination means 36,84,138 Elevation prevention means 37,85,139 Alarm means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 6/06 E04H 6/42

Claims (4)

(57) [Claims] In a multi-story parking machine in which a parking elevator is suspended by a chain, a detector for detecting a load applied to the chain, and a total weight of the elevator based on an output signal of the detector. Balance determining means for determining whether or not the eccentricity of the center of gravity is within a predetermined allowable range; and elevating operation of the elevating body when the eccentricity exceeds the allowable range in response to an output signal of the balance determining means. A safety device for a multi-story parking machine, characterized by comprising a lifting / lowering prevention means for preventing the vehicle from being lifted. 2. A multi-story parking machine in which a parking elevating body is suspended by a chain, a detector for detecting a load applied to the chain, and a total weight of the elevating body based on an output signal of the detector. Balance determining means for determining whether or not the eccentricity of the center of gravity is within a predetermined allowable range; and alarm means for receiving an output signal of the balance determining means and issuing an alarm when the eccentricity exceeds the allowable range. A safety device for a multi-story parking machine characterized by comprising: 3. A three-dimensional parking machine in which a parking elevator is suspended by a chain. A detector for detecting a load applied to the elevator by the chain, and the elevator based on an output signal of the detector. Balance determining means for determining whether or not the eccentricity of the center of gravity of the total weight is within a predetermined allowable range; and receiving the output signal of the balance determining means, when the eccentricity exceeds the allowable range, the vertical movement A safety device for a multi-story parking machine, comprising: a lifting / lowering inhibiting means for inhibiting a vertical movement of a body. 4. A multi-story parking machine in which a parking elevating body is suspended by a chain, a detector for detecting a load applied to the elevating body by the chain, and the elevating body based on an output signal of the detector. Balance determining means for determining whether or not the eccentricity of the center of gravity of the total weight is within a predetermined allowable range; and receiving an output signal from the balance determining means and issuing an alarm when the eccentricity exceeds the allowable range. A safety device for a multi-story parking machine, comprising: a warning means for issuing an alarm.