JP2002019605A - Temporary stop device for overhead carrying truck and lifting implement for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary stop device for an overhead carrying truck and a lifting implement for it capable of suspending the travelling of the overhead carrying truck in a simple operation. SOLUTION: The temporary stop device A is integrally connected to a lifting tool B and lifted so that it is temporarily fixed on a rail R. The temporary stop device A comprises a light reflector 5 having a light reflecting face 5a for reflecting the light L beamed from a light sensor 3 on an overhead carrying truck V and a supporting part 6 installed a magnetic plate M magnetic attracted by a magnet 2 attached on the under surface of the rail R.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for temporarily stopping a suspended carrier traveling in a suspended state on a rail laid on a ceiling in a semiconductor manufacturing plant or the like, and an apparatus for lifting the apparatus to lift a rail. The present invention relates to a lifting device for temporarily fixing the lifting device.

[0002]

2. Description of the Related Art Prior art will be described with reference to the drawings of embodiments of the present invention. As shown in FIG. 8, in a semiconductor manufacturing plant, rails R are laid on a ceiling W, and a large number of ceiling transport vehicles V are guided by the rails R to transport articles (wafer carriers). Drive in a row. An optical sensor device 3 is attached to the vehicle body 1 of each of the overhead transport vehicles V. Each of the overhead transport vehicles V travels while constantly emitting light L forward from the optical sensor device 3. Then, by receiving reflected light from an obstacle existing ahead (for example, an overhead traveling vehicle traveling ahead), the distance to the obstacle is measured. When this distance becomes equal to or less than the set value, the overhead transport vehicle V decelerates and further stops. This prevents a collision between the overhead transport vehicle V and an obstacle existing in front of the overhead transport vehicle V.

In the above-mentioned semiconductor manufacturing factory, when performing maintenance and inspection of various semiconductor manufacturing apparatuses H or rails R installed in the factory, it is necessary to temporarily stop the traveling of the overhead carrier V. Although the full stoppage of the ceiling transport vehicle V is performed in the whole factory, there is a case where a slight stop is desired. Each ceiling transport vehicle V is controlled by a control device (not shown) installed on the floor F, and it is necessary to operate the control device in order to stop traveling of each ceiling transport vehicle V. It is. This operation can be performed only by the person in charge of control.

[0004] Therefore, an operator who performs maintenance / inspection of the semiconductor manufacturing apparatus H or the rail R requests a control person to stop the traveling of the overhead transport vehicle V from the viewpoint of safety. The control person observes the operation status of the semiconductor manufacturing apparatus H and temporarily suspends the overhead transport vehicle V when possible.

[0005] As described above, the worker cannot suspend the overhead transport vehicle V by himself, and has to request a control person every time, and the work efficiency is extremely poor.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a worker who performs maintenance or inspection of a device or a rail can easily operate a ceiling conveyance vehicle without requesting a control person. It is an object of the present invention to temporarily stop traveling and to release the traveling.

[0007]

According to a first aspect of the present invention, there is provided an optical sensor device suspended from a rail laid on a ceiling and mounted on a vehicle body. Traveling while emitting light from, is a device for temporarily stopping the overhead transport vehicle that stops when the distance to the obstacle in front is less than or equal to a set value, facing the overhead transport vehicle, the It has a light reflecting surface for reflecting and reflecting light emitted from the optical sensor device, and
It is characterized by comprising a device main body made of a lightweight material that can be lifted by one worker, and temporary fixing means for temporarily fixing the device main body by suspending the device main body on a rail.

[0008] In the case of the first aspect of the present invention, a large number of ceiling transport vehicles are hung on rails laid on the ceiling,
Drive in a row. When suspending these overhead transport vehicles, the operator lifts the suspension device,
Temporarily fix to the rail. At this time, the light reflecting surface of the temporary stop device is disposed so as to face the optical sensor device attached to the vehicle body of the overhead conveyance vehicle. By the light emitted from the optical sensor device hitting the light reflecting surface and being reflected, the distance between the overhead transport vehicle and the temporary stop device is measured.
When this distance becomes equal to or less than the set value, the overhead conveyance vehicle is decelerated and further stopped. In this way, the worker can temporarily stop the overhead carrier without requesting the control person. Further, the temporary stop device is only temporarily fixed to the rail, and the overhead transport vehicle can be run again just by removing the temporary stop device from the rail.

In the case of the invention described in claim 2, the worker
The operation is simple because it is only necessary to magnetically attract the magnet attached to the rail and the magnetic plate attached to the upper surface of the apparatus main body. Further, the temporary stop device can be temporarily fixed at an arbitrary position on the rail. And even if the overhead carrier collides with the temporary stop device, both devices are prevented from being damaged by slipping of the device.

In the case of the invention described in claim 3, the worker
Even if the temporary stop device is temporarily temporarily fixed to the rail, the light reflecting surface is arranged in a state substantially perpendicular to the longitudinal direction of the rail. For this reason, the positioning of the temporary stop device is easy, and the light emitted from the overhead transport vehicle is reliably reflected on the light reflecting surface, and the measurement accuracy of the distance between the overhead transport vehicle and the temporary stop device is improved. Can be

When the device main body of the temporary stop device is made of a foamed resin material, it is difficult to clean the outer surface thereof. However, in the case of the invention described in claim 4, since the apparatus main body is coated with a flexible paint, the outer side surface can be wiped and cleaned. As a result, even when the device is used in a clean room, it is possible to prevent the cleanliness from being deteriorated.

In the case of the invention described in claim 5, when the optical sensor device of the overhead transport vehicle does not operate for some reason, the overhead transport vehicle may travel as it is and collide with the temporary stop device. However, a contact type transport vehicle stop switch is mounted on the front part of the vehicle body of the overhead transport vehicle, and the light reflecting surface of the temporary stop device has sufficient rigidity to activate the transport vehicle stop switch. In this case, when the front surface of the overhead transport vehicle is brought into contact with the light reflecting surface of the temporary stop device, the transport vehicle stop switch is operated to stop traveling of the overhead transport vehicle. For this reason, damage to both is minimized.

According to a sixth aspect of the present invention for solving the problems, the apparatus main body is provided with a hooked portion.
In order to temporarily fix the temporary stop device described in the above to the rail,
A lifting device for lifting the temporary stopping device to a rail portion, wherein a hook portion to be hooked on the hooked portion is provided at an upper end portion of a rod-shaped lifting device main body, wherein the temporary stopping device is provided. It is characterized in that it can be attached and detached with one touch.

In the case of the invention according to claim 6, a hooked portion is provided on the device main body of the temporary stop device, and a hook portion hooked on the hooked portion is provided at an upper end portion of the rod-shaped lifting tool main body. Is provided. When the temporary stop device is temporarily fixed to the rail, the operator hooks the hook of the lifting device on the hooked portion of the device main body of the temporary stop device, and lifts the temporary stop device integrated with the lifting device. The hook of the lifting device can be hooked on the hooked portion of the device main body of the temporary stop device with one touch. When removing the suspension device from the rail, the reverse operation is performed. Since the rails of the overhead transport vehicle are laid at a high place, the work of temporarily fixing the temporary stop device may not be able to be performed accurately. However, by using this lifting tool, the operator can easily and accurately perform the operation of temporarily fixing the temporary stop device to the rail or removing it from the rail.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a perspective view showing a state in which a temporary stop device A according to the present invention is mounted on the lower surface of a rail R, FIG. 2 is a perspective view of the temporary stop device A, and FIG. FIG. 4 is a plan view of the temporary stop device A, and FIG. 5 is a diagram illustrating a state in which the reinforcing plates 9a and 9b and the magnetic plate M are separated from the light reflecting portion 5 and the support portion 6 of the temporary stop device A. FIG. 6 is an enlarged sectional view taken along line XX of FIG. 4,
FIG. 7 is an enlarged sectional view taken along line YY of FIG. First, FIG.
, The rail R and the overhead transport vehicle V of the present embodiment will be briefly described. Next, with reference to FIGS. 2 to 7, a temporary stop device A according to the present invention and the rail R
The lifting tool B for attaching to the device will be described. The overhead transport vehicle V of the present embodiment is driven by a linear motor (not shown) mounted on the vehicle body 1 to travel while being suspended on a rail R laid on the ceiling W (see FIG. 8). I do. For this reason, as shown in FIG.
The magnet 2 is attached along the longitudinal direction. An optical sensor device 3 (see FIG. 8) is attached to the front surface of the vehicle body 1 constituting the overhead transport vehicle V, and light L is always emitted forward from the optical sensor device 3. When an obstacle is present immediately before the overhead transport vehicle V, the emitted light L is reflected on the obstacle, is reflected, and the reflected light is received by the optical sensor device 3 again. Is measured. When this distance becomes equal to or less than the set value, the overhead transport vehicle V is decelerated and further stopped.

A contact type stop switch (bumper switch 4) is attached to the ceiling carrier V at a predetermined position in the vehicle body 1 in the height direction over the entire circumference thereof.
The bumper switch 4 has a configuration in which a tape-shaped switch is double-wound through a small gap, and when the outer switch is pressed, the tape-shaped switch comes into contact with the inner switch to operate. V slightly protrudes from the vehicle body 1. When the bumper switch 4 is operated, the overhead transport vehicle V is stopped.

Next, the temporary stop device A will be described.
As shown in FIG. 2 and FIG.
Is the light L emitted from the optical sensor device 3 of the overhead transport vehicle V
A light reflecting portion 5 for applying light to reflect light,
And a supporting portion 6 for supporting the. In the case of this embodiment, the light reflecting portion 5 and the support portion 6 are made of a lightweight foamed resin material (for example, foamed polyethylene, foamed polystyrene, or the like).

First, the light reflecting section 5 will be described. The light reflecting portion 5 is a substantially rectangular plate having a width,
And the height correspond to the spread width of the light L emitted from the optical sensor device 3 of the overhead transport vehicle V. As shown in FIGS. 5 and 6, a lifting tool B is provided at the upper end of the light reflecting portion 5.
Two insertion holes 7 for detachably connecting (described later) are provided. The interval between the two insertion holes 7 is the same as the interval between the two connecting pins 28 (see FIG. 3) of the lifting tool B,
The inner diameter is slightly larger than the outer diameter of the flange 28a of the connecting pin 28. Each connecting pin 28 of the lifting tool B
Is inserted into the corresponding insertion hole 7, whereby the temporary stop device A and the lifting device B are integrally connected. In addition, bolt insertion holes 8 are provided at upper and lower portions of the respective insertion holes 7 respectively.
Is provided.

On the front side of the light reflecting portion 5 (on the side of the light reflecting surface 5a), around the two insertion holes 7, one front side reinforcing plate 9a is attached. Insertion hole 7
, Two back side reinforcing plates 9b are attached.
Each reinforcing plate 9a, 9b of this embodiment is made of a stainless steel plate,
The connection pin 28 of the lifting tool B is inserted into each of the insertion holes 7,
This is to prevent the light reflecting surface 5a or each of the insertion holes 7 from being damaged when the suspending device A is lifted by the lifting tool B. Since the structures of the reinforcing plates 9a and 9b are almost the same, only the front reinforcing plate 9a will be described here. The same members are denoted by the same reference numerals, the members forming the front reinforcing plate 9a are denoted by the suffix “a”, and the members forming the rear reinforcing plate 9b are denoted by the suffix “b”. To distinguish them from each other. As shown in FIG. 5 and FIG.
In FIG. 5A, an insertion hole 11a and a bolt insertion hole 12a are provided at portions corresponding to the respective insertion holes 7 and the respective bolt insertion holes 8 of the light reflection portion 5. The reinforcing plate 9a
A nut member 13 is fixed to a portion corresponding to each of the bolt insertion holes 12a on the back side (side in close contact with the light reflection surface 5a). A counterbore 8 a for fitting the nut member 13 is formed in the light reflecting surface 5 a of each bolt insertion hole 8 provided in the light reflecting portion 5.
Is provided.

The reinforcing plates 9a and 9b are brought into close contact with the front side (light reflecting surface 5a) and the back side of the light reflecting portion 5 after a spacer 14 made of a resin material is inserted into each bolt insertion hole 8 in advance. You. Then, the reinforcing plate mounting screw 15 is inserted from the back side, and screwed to the nut member 13 to be fixed by being tightened. Even if each reinforcing plate mounting screw 15 is excessively tightened, it is prevented from being tightened more than a predetermined amount by the spacer 14 inserted in advance, and the light reflecting portion 5 made of a foamed resin material is not damaged.

As shown in FIGS. 1 and 2, a bumper switch actuation for actuating the bumper switch 4 is provided on a portion of the light reflecting surface 5a corresponding to the bumper switch 4 of the overhead transport vehicle V. A plate 16 is attached. The bumper switch operation plate 16 is made of a plate (for example, a resin plate, a metal plate, or the like) that is harder than the foamed resin material.

Next, the support portion 6 will be described with reference to FIGS. The support portion 6 is a substantially rectangular parallelepiped block, and is adhered such that the longitudinal direction in plan view is substantially perpendicular to the width direction of the light reflection portion 5 (see FIG. 4). As shown in FIGS. 5 and 7, a mounting recess 17 for mounting the magnetic plate M is provided on the upper surface of the support 6. Further, three bolt insertion holes 18 are provided in the upper part of the support part 6 near the bottom surface of the mounting recess 17 along the width direction of the support part 6. Each of these bolt insertion holes 18 is for inserting each mounting bolt 19 for fixing the magnetic plate M to the support portion 6. The magnetic plate M is made of a thin magnetic stainless steel plate for weight reduction, and has a configuration in which skirt portions 22a and 22b extend downward around a rectangular upper surface (magnetic attraction surface 21). A pair of skirt portions 22a extending from both ends in the width direction are provided with bolt insertion holes 23 corresponding to the above-described bolt insertion holes 18, respectively.

As shown in FIG. 7, this magnetic plate M
When mounted on the mounting recess 17 provided on the upper surface of the support portion 6, the bolt insertion hole 18 of the support portion 6 and the bolt insertion hole 23 provided on the pair of skirt portions 22a of the magnetic plate M communicate with each other. Placed in a state. Then, each spacer 24 is fitted into these bolt insertion holes 18 and 23. The length of each spacer 24 is substantially the same as the width of the support 6. Subsequently, as shown in FIG. 5, the mounting bolt 1 is attached to each of the spacers 24 from one side in the width direction of the support portion 6.
9 is inserted, and a hexagon nut 25 is screwed into the protruding portion on the other side and tightened. Even if each hexagon nut 25 is excessively tightened, it is prevented from being tightened more than a predetermined amount by the spacer 24 inserted in advance, and the support portion 6 made of a foamed resin material is not damaged.

The upper surface of the light reflecting portion 5 and the upper surface of the supporting portion 6 are substantially in the same plane. Further, the entire surface of the light reflecting portion 5 and the supporting portion 6 made of a foamed resin material is coated with a paint having high flexibility (for example, an aqueous acrylic resin emulsion paint or the like). By doing so, the outer surfaces of the light reflecting portion 5 and the supporting portion 6 can be wiped and cleaned. This paint is the light L emitted from the optical sensor device 3 of the ceiling transport vehicle V.
In order to increase the reflectance of the color, it is desirable to use a white color.

Next, the lifting tool B will be described. As shown in FIG. 3, the lifting tool B has a connecting plate 27 fixed horizontally to the upper end of a long rod-shaped operation rod 26. As shown in FIG. 8, the length of the operation rod portion 26 corresponds to the height from the floor surface F to the lower surface of the rail R (about 4 m in the present embodiment). As shown in FIG. 6, on the surface of the connecting plate 27 opposite to the operation rod 26, the insertion holes 1 of the reinforcing plates 9a and 9b on the front side and the back side are provided.
1a, 11b, and 2 inserted through the insertion hole 7 of the light reflecting portion 5
The connecting pins 28 are attached. Each connecting pin 28
Are provided with flange portions 28a slightly larger than their shaft diameters. As shown in FIG.
Each of the connection pins 28 is inserted into the corresponding insertion hole 7,
When the temporary stop device A and the lifting device B are integrally connected, the reinforcing plate 9a on the front side and the connecting plate 27 come into close contact with each other. Moreover, the flange portions 28 a of the connection pins 28 are connected in a state of protruding from the back surface of the light reflection portion 5. Therefore, the connection pins 28 are prevented from coming off. The lower half portion of the operation rod portion 26 is provided with a non-slip portion 26a for preventing a worker from slipping when operating the lifting tool B.

The operation of the suspension device A according to the present invention and the lifting device B thereof will be described. As shown in FIG. 3, the worker inserts the two connection pins 28 of the lifting tool B into the respective insertion holes 7 provided in the light reflecting portion 5 of the temporary stop device A on the floor F. When connecting the suspending device A and the lifting device B, the operator needs two connecting pins 2 of the lifting device B.
8 only needs to be inserted through the corresponding insertion hole 7,
Can be connected with one touch. Then, as shown in FIG. 8, by operating the operation rod portion 26 of the lifting tool B,
Lift the entire suspension device A. Since the light reflecting portion 5 and the supporting portion 6 constituting the temporary stop device A of the present embodiment are made of a foamed resin material, the light reflecting portion 5 and the supporting portion 6 are lightweight (about 1.5 kg in the case of the present embodiment). Can also be lifted easily. Moreover, the flange portion 28a of each connecting pin 28
However, since it protrudes from the back side of the light reflecting portion 5 of the temporary stop device A, it is prevented from falling off, and there is no possibility that the temporary stop device A falls during lifting (see FIG. 9).

As shown in FIGS. 8 and 9, the operator lifts the temporary stop device A and approaches the lower surface of the rail R near the semiconductor manufacturing apparatus H for performing maintenance and inspection. Then, the magnet 2 attached to the lower surface of the rail R and the magnetic plate M attached to the upper surface of the support 6 of the temporary stop device A are magnetically attracted, and the temporary stop device A is temporarily fixed to the rail R. You. At this time, in order to reliably reflect the light L emitted from the optical sensor device 3 of the ceiling transport vehicle V, the light reflecting surface 5a of the temporary stop device A is substantially orthogonal to the longitudinal direction of the rail R (in other words, , Is disposed in a state of being opposed to the front surface of the ceiling transport vehicle V).
In the case of the temporary stop device A of the present embodiment, as shown in FIG. 4, the magnetic attraction surface 21 of the magnetic plate M attached to the support portion 6 is rectangular in plan view,
a is orthogonal to the light reflection surface 5a. For this reason, even when the worker temporarily temporarily fixes the temporary stop device A to the rail R, the light reflecting surface 5a is temporarily aligned in a position substantially perpendicular to the longitudinal direction of the rail R. Can be fixed. Moreover, in this state, almost the entire surface of the magnetic attraction surface 21 is attracted to the magnet 2 of the rail R, so that the temporary stop device A is temporarily fixed to the rail R most strongly. After the temporary stop device A is temporarily fixed to the rail R, the connecting pin 28 of the lifting device B is pulled out from each insertion hole 7 of the temporary stop device A, and the temporary stop device A and the lifting device B are separated.

As shown in FIGS. 1 and 8, the overhead transport vehicle V travels forward while emitting light L, and the suspension device A
Approach. The light L strikes the light reflecting surface 5a of the temporary stop device A, and the distance between the two is measured by detecting the reflected light. When this distance becomes equal to or less than the set value, the overhead transport vehicle V is automatically decelerated and further stopped. Then, the overhead transport vehicle V is held while being temporarily stopped. For this reason, the operator can perform maintenance and inspection of the semiconductor manufacturing apparatus H without worrying about the overhead transport vehicle V. Then, after the work is completed, the lifting device B is operated again to remove the temporary stop device A from the rail R. Since the obstacle (the temporary stop device A) disappears from the front of the overhead transport vehicle V, the overhead transport vehicle V automatically starts running again.

If, for some reason, the distance between the overhead transport vehicle V and the temporary stop device A falls below a set value, if the overhead transport vehicle V travels without stopping, the overhead transport vehicle V And the suspension device A may collide. In a normal case, first, the bumper switch 4 of the overhead transport vehicle V comes into contact with the light reflecting surface 5a of the light reflecting section 5, and the bumper switch 4 is operated to stop the overhead transport vehicle V. Here, when the light reflecting portion 5 of the temporary stop device A is made of a flexible foamed resin material, the bumper switch 4 may be pushed into the foamed resin material and may not operate. However, on the light reflecting surface 5a of the temporary stop device A of the present embodiment, a bumper switch operating plate 16 made of a plate harder than a foamed resin material is attached to a portion facing the bumper switch 4 of the ceiling transport vehicle V. ing. For this reason, the bumper switch 4 is reliably operated. In addition, since the temporary fixing device between the temporary stopping device A and the rail R is magnetically attracted, the temporary stopping device A slides along the longitudinal direction of the rail R integrally with the overhead transport vehicle V, and damage to both is minimized. Can be suppressed.

Further, it is difficult to wipe the outer surfaces of the light reflecting portion 5 and the supporting portion 6 made of a foamed resin material. However, the outer surfaces of the light reflecting portion 5 and the supporting portion 6 constituting the temporary stop device A of the present embodiment are coated with a paint having high flexibility. For this reason, the outer side surface of the temporary stop device A can be wiped and cleaned, and can always be kept in a clean state. As a result, even when the temporary stop device A is used in a clean room, it is possible to prevent the cleanliness from being deteriorated.

As described above, in the temporary stop device A according to the present invention, the main body (the light reflecting portion 5 and the support portion 6) is made of a lightweight material such as a foamed resin material and the other portions (the magnetic plate M). The reinforcement plates 9a and 9b, the spacers 14 and 24, and the bumper switch operation plate 16) are made of a metal material or a resin material so as to reduce the overall weight so that the weight can be lifted even by one worker. It is a thing.

In this embodiment, the overhead transport vehicle V is driven and driven by a linear motor (not shown), and a magnetic plate M attached to a temporary stop device A is attached to the lower surface of the rail R. This is the case where the magnet 2 is magnetically attracted. In the case of this embodiment, there is an advantage that the temporary stop device A can be temporarily fixed at an arbitrary position on the rail R. However, when the rail R is made of metal, a magnet may be mounted on the side of the temporary stop device A. In this case, even if the magnet 2 is not attached to the lower surface of the rail R, the temporary stop device A can be temporarily fixed to the rail R. Further, a method other than the magnetic attraction, for example, a temporary fixing by a freely absorbable tape or a hook member may be used.

In this embodiment, the light reflecting portion 5 of the temporary stop device A
Are connected integrally by inserting the connection pin 28 of the lifting tool B into the insertion hole 7 provided in the connector. However, a hook member (not shown) is provided on a connecting plate other than this, for example, a reinforcing plate 9b attached to the back side of the light reflecting portion 5, and the hook member and the lifting device B are hooked. Both may be connected.

[0034]

The temporary stop device according to the present invention has a light reflecting surface for reflecting light emitted from the optical sensor device of the opposing ceiling carrier and reflecting the light. A device body made of possible lightweight material;
Temporary fixing means for temporarily fixing the apparatus main body by suspending it on a rail. For this reason, a semiconductor manufacturing apparatus or an operator who performs maintenance / inspection of the rail, temporarily suspends the traveling of the overhead carrier by itself, by a simple operation of merely lifting the apparatus main body and temporarily fixing the main body to the rail, And release it.

Similarly, the lifting device is for lifting a suspension device provided with a hooked portion on the apparatus main body to a rail portion, and the upper end of the rod-shaped lifting device main body is provided with the hooking device. A hook portion is provided to be hooked on the portion.
An operator simply and accurately lifts the hook of the lifting tool main body by hooking the hook on the hooked portion of the apparatus main body of the temporary stop device, and easily and accurately attaches the temporary stop device to the rail laid at a high place. Can be temporarily fixed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state in which a temporary stop device A according to the present invention is attached to a lower surface of a rail R.

FIG. 2 is a perspective view of a temporary stop device A.

FIG. 3 is a perspective view of a state in which a suspension device A and a lifting device B are separated.

4 is a plan view of the temporary stop device A. FIG.

FIG. 5 is a perspective view showing a state where a reinforcing plate 9a, 9b and a magnetic plate M are separated from the light reflecting portion 5 and the supporting portion 6 of the temporary stop device A.

FIG. 6 is an enlarged sectional view taken along line XX of FIG. 4;

FIG. 7 is an enlarged sectional view taken along line YY of FIG. 4;

FIG. 8 is an operation explanatory view of the temporary stop device A.

FIG. 9 is an enlarged view of a state where the temporary stop device A is temporarily fixed to the rail R.

[Explanation of symbols]

 A: Temporary stop device B: Lifting equipment F: Floor surface (ground) L: Light M: Magnetic plate R: Rail V: Ceiling carrier W: Ceiling 1: Body 2: Magnet 3: Optical sensor device 4: Bumper switch (Transport vehicle stop switch) 5: Light reflecting portion (device main body) 5a: Light reflecting surface 6: Supporting portion (device main body) 7: Insertion hole (receiving portion) 16: Bumper switch operating plate (light reflecting surface) 21a: Long side part 26: Operation rod part (lifting device main body) 28: Connecting pin (hook part)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Akira Ishikura 100 Takegahana-cho, Ise-shi, Mie Shinko Electric Co., Ltd.Ise Works F-term (reference) 3F202 CA03 CD05 3F204 AA01 CA05 FA02 FB18 FC01 FC08 FD03 5F031 FA03 GA59 JA06 JA32

Claims (6)

[Claims] 1. A vehicle which is suspended from a rail laid on a ceiling, travels while emitting light from an optical sensor device mounted on the vehicle body, and stops when a distance from an obstacle in front becomes less than a set value. A device for temporarily stopping the ceiling transport vehicle to be opposed to the ceiling transport vehicle, having a light reflecting surface for reflecting by applying light emitted from the optical sensor device,
Moreover, an apparatus main body made of a lightweight material that can be lifted by one worker, and temporary fixing means for temporarily fixing the apparatus main body by suspending the apparatus main body on a rail, comprising: Pause device. 2. The apparatus according to claim 1, wherein the ceiling transport vehicle travels with a linear motor, and a magnet for operating the linear motor is attached to the rail, and the temporary fixing unit is provided on an upper surface of the apparatus main body. Mounted,
The suspension device according to claim 1, wherein the suspension device is a magnetic plate that is magnetically attracted to the magnet. 3. The ceiling according to claim 2, wherein the magnetic plate has a substantially rectangular shape in a plan view, and a long side thereof is attached along a direction orthogonal to the light reflecting surface. A temporary stop device for the transport vehicle. 4. The temporary stop device for a ceiling transport vehicle according to claim 1, wherein the device main body is made of a foamed resin material and is coated with a flexible paint. 5. A contact-type carrier stop switch is mounted on the front surface of the vehicle body of the overhead carrier, and the light reflecting surface of the temporary stop device is so rigid that the carrier stop switch can be operated. The suspension device for a ceiling transport vehicle according to any one of claims 1 to 4, further comprising: 6. A lifting device for lifting a temporary stop device to a rail portion for temporarily fixing the temporary stop device to a rail according to claim 1, wherein a hooked portion is provided on the device main body. An upper portion of the rod-shaped lifting tool main body is provided with a hook portion to be hooked on the hooked portion, and is detachably attached to the suspension device with one touch. Lifting device of the suspension device.