JP4926613B2 - Lifting device and wire rope damage detection device - Google Patents

Description

  The present invention relates to a device that detects damage such as broken strands of a wire rope, and a lifting device to which the detection device can be suitably applied.

  Conventionally, wire ropes are used in various devices such as cargo handling, transportation, and lifting. For example, a wire rope having a structure shown in FIG. The wire rope 61 is formed by twisting a plurality of strands 64 (for example, eight strands) formed by bundling a plurality of (for example, 19) strands 63 around a core steel (fiber core or rope core) 62. It has a structure. FIG. 12 shows a cross section of the wire rope 61 engaged with a groove 66 of a sheave 65 such as a drive sheave or a turning sheave.

  And, for example, in passenger elevators, elevator parking devices, three-dimensional warehouses, crane devices, aerial work platforms, etc., regular maintenance inspections are performed, and there are “wire breaks” and “strand breaks” on the wire rope. An inspection item is also included in the inspection items. This “strand break” and the “strand break” that is a sign of this are typical phenomena of wire rope wear damage. With regard to “wire breakage”, if it is a small number or minor, it can be dealt with only at the time of periodic maintenance and inspection, and there will be no problem for continued operation of the elevator. Therefore, generally, the urgency to stop the elevator immediately is not required due to the discovery of the “wire break”.

  However, when the “strand break” increases in a chain reaction and expands to one strand, and finally “strand break” occurs, an emergency occurs. That is, when one strand breaks, the strand protrudes from the wire rope. As the wire rope passes through the pulley and the sheave groove while changing the direction, the strand that has come out protrudes and extends longer as shown in FIG. The elongated broken strand 64a does not only wear the sheave groove 66 and the like. For example, in the case of a parking device, there is a risk that the vehicle may be damaged or the elevator may be raised or lowered by contacting or wrapping around a vehicle mounted on an elevator or a parking shelf, a mechanical member of the parking device, or a structure. is there.

  Therefore, unlike “strand breaks” that are sufficient during regular maintenance inspections, as soon as “strand breaks” are discovered, elevators and other elevators are immediately stopped, and wire rope replacement and other measures are taken. It is necessary to apply. Cited Documents 1 to 5 disclose examples of these wire rope inspection techniques, respectively.

  The elevator wire rope automatic monitoring device disclosed in Patent Document 1 is configured to detect a wire rope damage signal by installing a magnetic flaw detector near the wire rope. Although details of the device are not disclosed, devices such as a magnetic flaw detector, a control panel, and a display device are large and expensive. Furthermore, a relatively large installation space is required. The cost will increase further when testing multiple wire ropes.

  The safety device for the lifting device disclosed in Patent Document 2 includes a ring-shaped movable element, a rod-shaped detector, a detection device, and the like that are arranged so as to surround the wire rope in a non-contact state. When the wire rope is removed from the specified travel position of the pulley or sheave due to the wire rope cutting or earthquake shaking, the ring-shaped mover is moved in contact with the displaced wire rope, and the rod-shaped detector is also moved. This is detected by the detection device. This safety device is also large and expensive.

  Patent Document 3 proposes a pressure sensor type wire breakage detection device. This device is composed of a funnel-shaped cylinder divided into two parts and a holder provided outside through a pressure sensor. When a wire rope is inserted and moved into the funnel-shaped cylinder, the cut portion of the wire that protrudes outward from the wire rope will drag the funnel-shaped cylinder and drag it. This is to be detected. While this safety device could be applied to strand break detection, it is still large and expensive. Further, when inspecting a plurality of wire ropes, the cost will be further increased and a larger installation space will be required.

  Patent Document 4 proposes an optical sensor type strand breakage detection device. In this apparatus, a projector and a light receiver are arranged at opposing positions so as to be orthogonal to the axis of the moving wire rope. Then, a change in the amount of received light caused by the passage of the part of the broken wire that protrudes outward is detected to detect the broken wire. This safety device can also be applied to the detection of strand breakage, but is large and expensive.

Patent Document 5 discloses a wire breakage detection tool using a plate, a film, a film, or the like made of an easily damaged material such as paper or clay. If this detector is placed close to the moving wire rope, the wire that has been cut out and comes into contact with it will be damaged, so that the wire break can be easily confirmed visually. is there. Although this detector can also be applied to the detection of strand breakage, it cannot be used only during periodic inspections because it must rely on visual inspection, and is not suitable for “strand breakage” requiring urgent action.
Japanese Patent Laid-Open No. 60-19677 No. 7-56293 JP-A-8-119539 JP-A-11-325844 JP 2004-307116 A

  The present invention has been made in order to solve such a problem, is simple and inexpensive in construction, and can always detect damage such as broken strands of the wire rope. An object of the present invention is to provide a wire rope damage detection device that can be used, and a lifting device to which the detection device can be suitably applied.

The wire rope damage detection device of the present invention is
A detection device for detecting damage of a wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A support member for stretching the filament,
Connected to the striatum, and a movement detecting device for detecting the movement of the striatum,
One end of the striate body is fixed to the support member, and the other end is connected to the movement detection device side via a striate body turning portion formed on the support member,
The movement detecting device is configured to stop the driving of the wire rope driving device based on the detection of the movement of the linear body.

  According to such a configuration, since the detection linear body is engaged with a portion protruding outward from the wire rope, such as a cutting strand of the moving wire rope, the linear body is pulled and moved. When the movement detecting device detects this, the driving of the wire rope driving device is stopped. Therefore, quick repair or the like thereafter becomes possible.

  The movement detecting device is electrically connected to the driving circuit of the driving device, and when the movement detecting device detects the movement of the linear body, the driving circuit is cut off and the driving device is stopped. Can be configured.

The movement detection device includes an outlet interposed in the driving circuit of the driving device, and a plug that can be electrically connected to the outlet,
By electrically short-circuiting the plug blades of this plug, the drive circuit is brought into a connected state, and the above-mentioned linear body is connected to this plug,
The driving circuit can be cut off by disconnecting the outlet and the plug.

  If comprised in this way, a movement detection apparatus (shut-off apparatus of the circuit for a drive) is realizable with a simple component which is easy to acquire.

Also, a detection device for detecting damage to the wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A movement detecting device connected to the striatum for detecting movement of the striatum;
The movement detection device is configured to stop the driving of the wire rope drive device based on detecting the movement of the striatum,
The movement detection device is electrically connected with an outlet interposed in the driving circuit of the driving device and a plug that can be electrically connected to the outlet,
The driving circuit is in a connected state by short-circuiting the plug blades of the plug, and the above-mentioned filament is connected to the plug,
When the movement of the striate body is detected, the connection between the outlet and the plug is disconnected to cut off the driving circuit and stop the driving device,
Furthermore, the said linear body is penetrated by the insertion part formed in the said plug,
The end of the striate is elastically attached to a fixed part that cannot move through an extendable elastic member,
An engagement portion that cannot pass through the insertion portion is formed on the distal end side of the portion corresponding to the insertion portion of the linear body,
When the filament is moving, the engagement portion engages with the insertion portion of the plug, so that the connection between the outlet and the plug can be cut off.

  With this configuration, since the striatum is always in a tensioned state via the telescopic member, the accuracy of detecting the movement of the striatum by the movement detection device is improved.

Furthermore, a detection device for detecting damage to the wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A movement detecting device connected to the striatum for detecting movement of the striatum;
The movement detection device is configured to stop the driving of the wire rope drive device based on detecting the movement of the striatum,
A magnet outlet having a magnet connection type connection terminal, which is interposed in the driving circuit of the driving device, and an adapter that can be electrically connected by being magnetically attached to the magnet outlet, are electrically connected and a plug capable of electrically connecting to the adapter,
The driving circuit is in a connected state by short-circuiting the plug blades of the plug, and the above-mentioned filament is connected to the plug,
When the movement of the filament is detected , the drive circuit is shut off by disconnecting at least one of the connection between the magnet outlet and the adapter, or the connection between the adapter and the plug, and the drive device stops. It can be constituted as follows.

  In such a configuration, the movement detection device (driving circuit breaking device) can be realized by simple parts that are easily available, and the driving circuit can be broken more easily.

Insert the linear body through the insertion part formed in the plug,
The end of this linear body is elastically attached to a fixed part that cannot move, via an extendable elastic member,
From the portion corresponding to the insertion portion of the filamentous body, the tip is crocodile, and an engagement portion that cannot pass through the insertion portion is formed.
When the filament is moving, the engaging part engages with the insertion part of the plug, so that at least one of the connection between the magnetic outlet and the adapter or the connection between the adapter and the plug is cut off. It can be configured as possible.

  With this configuration, since the striatum is always in a tensioned state via the telescopic member, the accuracy of detecting the movement of the striatum by the movement detection device is improved.

The lifting device of the present invention is
Elevator lifting wire rope with an elevator attached to one end and a counterweight attached to the other end;
A drive motor;
A drive sheave for rotating the wire rope, which is rotationally driven by the drive motor;
A turning sheave disposed adjacent to the drive sheave;
A wire rope damage detection device disposed in proximity to at least one of the drive sheave and the turning sheave,
This damage detection apparatus is composed of any one of the damage detection apparatuses described above.

The elevator parking apparatus of the present invention is
An elevator for transporting vehicles;
A lifting device for lifting and lowering the elevator,
And parking shelves installed in multiple stages above and below the elevator hoistway,
The lifting device includes the lifting device described above.

Damage detection device of a wire rope of the present invention, the configuration is simple der is, moreover is easy to handle. Moreover, it can be installed even in a narrow space at a high place, and it is possible to easily inspect for damage such as strand breakage without the need for an operator to directly access the wire rope. And if the damage of a wire rope is detected, the drive of the drive device of a wire rope will be stopped automatically. Therefore, damage to the damage detection device itself can be avoided.

  An embodiment of a damage detection device (hereinafter also simply referred to as a detection device) of the present invention and an embodiment of an elevating device provided with the detection device will be described with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing an example of an elevator parking device (hereinafter simply referred to as a parking device) provided with an elevator for raising and lowering a vehicle, which is an embodiment of the lifting device of the present invention. FIG. 2 is a perspective view showing an elevator in the parking apparatus of FIG. FIG. 3A is a plan view showing the elevator drive device of FIG. 2, and FIG. 3B is a view taken along the line III-III in FIG. FIG. 4 is a perspective view showing an embodiment of the wire rope damage detection apparatus of the present invention which can be applied to the wire rope of the elevator of FIG.

  Inside the parking device 1, an elevator 3 for raising and lowering a vehicle-mounted pallet 2 is suspended by a wire rope 4, and a driving device 5 that raises and lowers the elevator 3 by winding and feeding the wire rope 4. And a counterweight 6 is provided. On both sides of the hoistway 7 of the elevator 3, a multi-level parking shelf 8 for accommodating the pallet 2 on which the vehicle M is placed is disposed. The elevator 3 moves up and down between the parking shelves 8 on both sides, moves to the parking shelf 8 of the called pallet 2, receives the pallet 2, and transports it to the entry / exit floor E. Further, the pallet 2 on which the vehicle M is placed is transferred from the loading / unloading floor E to the designated parking shelf 8 and deposited. In this parking apparatus 1, the entry / exit floor E is the lowest floor (first floor).

  As shown in FIG. 2, a counterweight 6 is connected to the elevator 3 by a wire rope 4. Reference numeral 9 denotes an elevating guide rail of the elevator 3, and only a part thereof is illustrated. One end of the wire rope 4 is connected to the counterweight 6, wound around the turning sheave 12, the drive sheave 11, and the turning pulley 10, and the other end is connected to the four corners of the substantially rectangular elevator 3. Yes.

  As shown in FIG. 3, a drive motor 14 is connected to the drive sheave 11 via a speed reducer 13 and a brake (not shown). Reference numeral 15 denotes a coupling. The drive sheave 11 is rotated by the drive motor 14, and the elevator 3 is moved up and down by pulling the wire rope 4 by the frictional force of the drive sheave 11. The weight of the counterweight 6 makes the ascending force and the descending force of the driving device 5 uniform.

  In this embodiment, a set of three wire ropes 4 is connected to each of the four corners of the elevator 3. Therefore, a groove 16 for each rope is formed on each sheave 11 and 12 so that twelve ropes 4 can be wound around. This number is an example, and is not limited to this. Of course, the twelve rope portions between the sheaves 11 and 12 are each linear without sagging due to tension. In this portion, each wire rope 4 engages with the groove 16 of the sheaves 11 and 12 and is stretched by tension, so that it is not displaced in the direction perpendicular to the longitudinal direction (the cross-sectional radial direction of the rope). Aligned. Therefore, the twelve wire ropes 4 have a flat shape as a whole. In this portion, a damage detection device 21 for the wire rope 4 is installed. The installation location of the detection device 21 is not particularly limited as long as it is close to the wire rope 4. However, since all twelve wire ropes 4 can be inspected by a single detection device 21, the vicinity of the turning sheave 12 and the drive sheave 11 is preferable.

  As shown in FIG. 4, the detection device 21 uses a gantry 22 that is disposed on both the left and right sides of the turning sheave 12 and supports the shaft 12 a of the turning sheave 12. Specifically, at the upper end of the turning sheave 12, it is bridged on the left and right pedestals 22 so as to intersect the moving direction of the rope 4 at right angles in a state close to the twelve ropes 4 aligned with each other. The support member 23 is fixed to be adjustable. In the present embodiment, the support member 23 has a simple rod shape and supports a detection wire 24 described later. In order to attach the end portion of the support plate 23 to the gantry 22 so that the position of the support plate 23 can be adjusted, a sandwiching member 20 (having the function of a leaf spring) having a U-shaped elasticity as shown in the figure is used. The end portion of the support plate 23 and the flange portion of the gantry 22 are clamped by the member 20. If this clamping member is adopted, the support plate 23 can be easily attached and detached, and the position of the support plate 23 with respect to the gantry 22, and consequently the position of the crimp terminal 29 at the end of the detection wire 24 with respect to the magnet outlet 31 described later. The adjustment becomes easier.

  Although not shown, a screw hole is formed in the clamping member 20, and a fixing bolt (adjustment bolt) is screwed into the screw hole so that the end of the support plate 23 or the tip of the mount 22 abuts. Also good. The clamping force of the clamping member 20 can be released by loosening the fixing bolt, and the clamping force of the clamping member 20 can be increased by tightening the fixing bolt.

  Below the support plate 23, a detection wire (striate body) 24 is stretched in a state of crossing at right angles to the moving direction of the rope 4 and further approaching (see FIG. 7). In the present embodiment in which the rope 4 having an outer diameter of about 12 mm is employed, the distance between the detection wire 24 and the upper end of the rope 4 is about 5 mm. By doing so, the detection wire 24 is easily engaged with the strand 4a protruding by cutting or the like and is pulled by the moving wire rope 4, so that the cut strand 4a can be detected.

  An eyebolt 25 for fixing a wire protrudes from a substantially upper center portion of the support plate 23, and an eyebolt 26 for turning a wire is fixed to a hanging portion 23a extending downward at the lower portion near both ends. One end of the detection wire 24 is fixed to the fixing eyebolt 25, is inserted through one turning eyebolt 26, extends so as to intersect the moving direction of the rope 4 at right angles, and then the other turning eyebolt. 26, and then further inserted into the fixing eyebolt 25, and the other end is attached to one frame 22.

  In this embodiment, an eyebolt is used for fixing and turning the detection wire 24, but the eyebolt is not particularly limited. A known U-shaped pin, ring-shaped member, or the like may be used. In short, any suitable wire can be used as long as it can fix or insert a thin wire. Further, the method of stretching the detection wire 24 is not limited to the above.

  For example, as shown in FIG. 5, after the detection wire 24 is fixed to the fixing eyebolt 25 and inserted into both turning eyebolts 26, the detection wire 24 is extended without being inserted into the fixing eyebolt 25, and the other end is one side. It may be attached to the gantry 22.

  Further, as shown in FIG. 6, the fixing eyebolt 25 at the center upper portion of the support plate 23 is not provided, and one end of the detection wire 24 is fixed to one turning eyebolt 26 and inserted into the other turning eyebolt 26. Then, the other end may be attached to one of the gantry 22 by extending as it is.

  Further, the detection wire 24 does not necessarily intersect the rope 4 at a right angle. It may be inclined from a right angle. In short, the support plate 23 and the eyebolt may be arranged as long as the detection wire 24 is brought close to the rope 4 and can be stretched in a direction crossing the moving direction of the rope 4.

  As shown in FIGS. 4 and 8, the other end of the detection wire 24 is attached to a bracket 28 via an extended coil spring 27, and the bracket 28 is fixed to the gantry 22. Specifically, the other end of the detection wire 24 is crimped with a crimp terminal 29 as an engaging portion that can be engaged with an insertion ring 33b of the plug 33 described later. A coil spring 27 is connected to the. Therefore, when the detection wire 24 is pulled to one end side (support plate 23 side), the coil spring 27 is extended. As described above, the crimp terminal 29 that is inexpensive, easy to obtain, and easy to handle is used as a connection tool, but is not limited to this crimp terminal, and any other suitable connection tool is used. May be.

  As shown in FIG. 4, the other end of the detection wire 24 is provided with a movement detection device 30 that detects that the detection wire 24 has moved by being pulled by a cut strand or the like. The movement detection device 30 has a so-called magnet outlet 31 disposed in the vicinity of the bracket 28. An adapter 32 is electrically connected to the magnet outlet 31 by being magnetically attached thereto, and a plug for electrical connection is fitted to the adapter 32.

  As shown in FIG. 9, the magnet outlet 31 maintains electrical connection with the plug 33 via the adapter 32 due to the magnetizing force of the magnet. When an external force is applied to the plug 33 and the adapter 32 in the direction of pulling out from the magnetic outlet 31, it has a connection holding force equivalent to that of a normal outlet, but the magnetic outlet 31 and the adapter against a lateral external force (bending moment). The connection holding force with 32 is small. Therefore, when a lateral external force is applied to the plug 33 or the adapter 32, the adapter 32 is easily detached from the magnet outlet 31. Such a magnetic outlet is such that even if a person puts his / her foot on the electrical cord of the plug (not connected in the present embodiment), it is not cut, and there is no fear of the person tripping.

  In the present embodiment, the plug 33 is not connected to an electric cord in a normal use mode, and a short-circuiting electric cord 34 is connected between the pair of plug plug blades 33a. A plug blade insertion port 32a into which the plug blade 33a of the plug 33 is inserted is formed on the proximal end side of the adapter 32, and a terminal pin 35 for electrical connection to the magnet outlet 31 is formed on the distal end side of the adapter 32. Projected. When the plug plug blade 33a is inserted into the plug blade insertion port 32a, the tip end portion of the plug plug blade 33a and the base end portion of the terminal pin 35 are brought into contact with each other inside the adapter 32 to be electrically connected.

  On the other hand, the magnetic socket 31 is formed with a pin receiving hole 31a for electrically connecting the terminal pin 35 of the inserted adapter 32 to a desired circuit (not shown). Further, magnets 36 are attached to the tip end side of the adapter 32 and the magnet outlet 31 so as to face each other. With such a configuration, a connecting force is not generated simply by inserting the terminal pin 35 of the adapter 32 into the pin receiving hole 31a of the magnet outlet 31, but the connecting force between the magnet outlet 31 and the adapter 32 is increased by the magnetizing force of the magnet. Arise. The external force applied to the adapter 32 and the plug 33 makes it easy for the magnets 36 to come off. An insertion ring 33 b through which the detection wire 24 is inserted is formed at the top of the plug 33. The inner diameter of the insertion ring 33b is so small that the crimp terminal 29 cannot pass through. As a result, when the detection wire 24 moves a predetermined distance, the crimp terminal 29 is engaged with the insertion ring 33b, and the connection between the magnet outlet 31 and the adapter 32 is released.

  FIG. 10 shows the operation of the detection device 21 described above. FIG. 10A shows the non-operating state of the detecting device 21, and FIG. 10B shows the operating state of the detecting device 21. The detection wire 24 of the detection device 21 is in a state where tension is generated in the entire length thereof by the pulling force of the coil spring 27. In this embodiment, the detection wire 24 is set so that the distance between the position of the insertion ring 33 b of the plug 33 and the portion of the crimping terminal 29 of the detection wire 24 that can contact the insertion ring 33 b is approximately 10 mm. And the length of the coil spring are set (FIG. 10A). Then, when the cut strand portion 4 a is engaged with the detection wire 24 stretched in the vicinity of the rope 4, the detection wire 24 is pulled to the moving rope 4. When the detection wire moves about 10 mm, the crimp terminal 29 at the tip abuts against the insertion ring 33 b of the plug, and a lateral force is applied to the plug 33. Further movement causes the adapter 32 to be detached from the magnet outlet 31 (FIG. 10B). In the present embodiment, the adapter 32 is detached from the magnet outlet 31 when the detection wire 24 is further pulled by about 10 mm after the crimp terminal 29 contacts the insertion ring 33 b.

  When the adapter 32 is removed from the magnetic outlet 31, the drive motor 14 of the elevator 3 is immediately stopped as described below, and the elevator 3 maintains its stop position by the off-brake action.

  FIG. 11 shows an example of a drive circuit including a machine operation command circuit 40 such as the drive motor 14 of the elevator 3 and the door opening / closing drive motor 37 of the entrance / exit floor E of the parking apparatus 1. This circuit includes a power switch 41 for turning on all the driving devices, a plurality of emergency stop switches S1, S2, S3,. The movement detector 30 and the relay coil 43 for the emergency stop switch S and the movement detector 30 are arranged in series. Specifically, the movement detection device 30 on the circuit may correspond to the adapter 32 and the magnet outlet 31 described above. Further, as illustrated, a relay contact 44 is arranged in series with the drive motor 14 of the elevator 3, the door opening / closing drive motor 37 of the entrance / exit floor E, and the like.

  When at least one of the plurality of emergency stop switches S and the movement detection device 30 is activated, the relay contact 44 is opened and the drive device 5 of the elevator 3 is stopped. As a specific example, as shown in FIG. 10B, when the adapter 32 is removed from the magnet outlet 31, the portion of the movement detecting device 30 in the circuit of FIG. And the relays 43 and 44 act | operate, the drive device 5 of the elevator 3 stops immediately, and the elevator 3 stops raising / lowering by the off-brake effect | action.

  In addition, although not shown, when the drive device 5 is urgently stopped, an alarm, an operation stoppage of the parking device, or the like can be displayed on the display device installed on the entry / exit floor E of the parking device 1. Furthermore, if a remote monitoring system is installed, the monitoring center, the maintenance center, the portable terminal of the maintenance staff, etc. are notified through the communication line, and prompt and appropriate repair work is performed.

  Although a sequence circuit is illustrated in FIG. 11 for easy understanding, it is not limited to this configuration. In short, a control circuit that can stop the operation of the drive device 5 of the elevator 3 when the detection device 21 detects the movement of the detection wire 24 may be employed. Moreover, what is necessary is just to hold | maintain an elevator stop state by the off-brake effect | action of the drive device 5, etc. when the drive device 5 stops.

  Further, the relay may not be applied to the movement detection device 30 but directly connected to the machine operation command circuit 40 (connected in series to the relay contact 44 in FIG. 11). This is because when the magnet outlet 31 is disconnected, the circuit interruption state is maintained.

  Although the magnet outlet 31 is employed as the movement detection device 30, a combination of an ordinary outlet and a plug may be employed. However, it is preferable to employ the magnet outlet 31 because the connection is easily disconnected by the external force in the lateral direction.

  In the embodiment described above, as shown in FIG. 4, the detection device 21 is arranged in the vicinity of the turning sheave 12, but the arrangement is not limited thereto. For example, it may be disposed close to the drive sheave 11. Moreover, you may install in multiple places instead of one place. And although the detection apparatus 21 is installed in the upper side of the several wire rope 4 aligned in planar shape as shown in FIG. 4, it replaces with this or in addition to this, You may install the detection apparatus 21 in the lower side (back side).

  The support plate 23 of the detection device 21 is not limited to the shape described above. Any shape may be used as long as it is suitable as a support plate.

  Moreover, although the detection apparatus 21 of embodiment described above showed the example applied to the strand breakage of the wire rope 4, it is not limited to strand breakage in particular, It is applied also to malfunctions, such as a strand breakage. Can do.

  Furthermore, as an object to which the detection device 21 is applied, in the above embodiment, an elevator lifting wire rope having a counterweight connected to the other end is taken as an example, but the present invention is not limited thereto. The present invention can also be applied to an elevating device that winds and feeds a take-up drum without using a counterweight.

  Moreover, although the said embodiment demonstrated the elevator raising / lowering apparatus in an elevator type parking apparatus as an example, this invention is not limited to this. The present invention can be applied to an apparatus that uses a wire rope as a power transmission means, such as an elevator lift for a normal person, a crane, and the like.

  According to the present invention, when damage such as strand breakage of the wire rope is detected, the driving of the wire rope is stopped. Therefore, the wire rope is not limited to the lifting device but is used in a wide field such as transportation and cargo handling. It is possible to apply to cut inspection.

It is sectional drawing which shows an example of the elevator type parking apparatus provided with the elevator for vehicle raising / lowering which is one Embodiment of the raising / lowering apparatus of this invention. It is a perspective view which shows the elevator in the parking apparatus of FIG. FIG. 3A is a plan view showing the elevator drive device of FIG. 2, and FIG. 3B is a view taken along the line III-III in FIG. It is a perspective view which shows one Embodiment of the damage detection apparatus of this invention which can be applied to the wire rope of the elevator of FIG. It is a perspective view which shows the principal part of other embodiment of the damage detection apparatus of this invention. It is a perspective view which shows the principal part of other embodiment of the damage detection apparatus of this invention. It is a side view which shows arrangement | positioning with respect to the wire rope of the wire for a detection of the damage detection apparatus of FIG. It is a side view which shows the attachment edge part vicinity of the wire for a detection of the damage detection apparatus of FIG. It is sectional drawing which shows an example of the movement detection apparatus of the damage detection apparatus of FIG. FIG. 10A is a schematic plan view showing the non-operating state of the damage detection apparatus of FIG. 4, and FIG. 10B is a schematic plan view showing the operating state. It is a connection diagram which shows an example of the circuit for a drive to which the movement detection apparatus in the damage detection apparatus of this invention can be applied. It is a side view which shows an example of the wire rope which is the object of damage detection. It is a side view which shows one of the wire rope of FIG. 12, and its strand.

Explanation of symbols

1 ... Parking device
2 ... Pallet
3 ... Elevator
4 ... Wire rope
5 ... Drive device
6. Counterweight
7 ... hoistway
8. Parking lot
9. Guide rail
10 ... Turning pulley
11. Drive sheave
12 ... Turn sheave
13. Reducer
14 ... Drive motor
15 ... Coupling
16 .... Groove
20... Sandwiching member
21... Detection device
22 ... Stand
23... Support plate
24... Detection wire
25 .... Eye bolts for fixing
26... Eyebolts for turning
27 ... Coil spring
28 ... Bracket
29 ... Crimp terminals
30... Movement detection device
31 ... Magnetic outlet
32 ... Adapter
33 ... Plug
34 ... Electrical cord for short circuit
35 ... Terminal pins
36 ・ ・ ・ ・ Magnet
37... Door opening / closing drive motor
40 .... Machine operation command circuit
41 .... Power switch
43 ... Relay coil
44 ... Relay contact
E ... Entry / exit floor
M ・ ・ ・ ・ Vehicle
S ... Emergency stop switch

Claims (8)

A detection device for detecting damage of a wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A support member for stretching the filament,
Connected to the striatum, and a movement detecting device for detecting the movement of the striatum,
One end of the striate body is fixed to the support member, and the other end is connected to the movement detection device side via a striate body turning portion formed on the support member,
A wire rope damage detection device configured to stop driving of the wire rope drive device based on the movement detection device detecting the movement of the striatum.   The movement detecting device is electrically connected to a driving circuit of the driving device, and is configured such that when the movement of the linear body is detected, the driving circuit is cut off and the driving device is stopped. The wire rope damage detection device according to claim 1. The movement detection device includes an outlet interposed in a driving circuit of the driving device, and a plug that can be electrically connected to the outlet,
The driving circuit is in a connected state by short-circuiting the plug blades of the plug, and the above-mentioned filament is connected to the plug,
The wire rope damage detection device according to claim 2 , wherein the driving circuit is cut off by disconnecting the outlet and the plug. A detection device for detecting damage of a wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A movement detecting device connected to the striatum for detecting movement of the striatum;
The movement detection device is configured to stop the driving of the wire rope drive device based on detecting the movement of the striatum,
The movement detection device is electrically connected with an outlet interposed in the driving circuit of the driving device and a plug that can be electrically connected to the outlet,
The driving circuit is in a connected state by short-circuiting the plug blades of the plug, and the above-mentioned filament is connected to the plug,
When the movement of the striate body is detected, the connection between the outlet and the plug is disconnected to cut off the driving circuit and stop the driving device,
Furthermore, the said linear body is penetrated by the insertion part formed in the said plug,
The end of the striate is elastically attached to a fixed part that cannot move through an extendable elastic member,
An engagement portion that cannot pass through the insertion portion is formed on the distal end side of the portion corresponding to the insertion portion of the linear body,
When the umbilical member is moving, by the engagement portion is engaged with the insertion portion of the plug, the arrangement has been such Ruwa ear rope so that the connection between the outlet and the plug can cut damage Detection device. A detection device for detecting damage of a wire rope for driving force transmission,
A detecting linear body having flexibility and stretched so as to be close to the wire rope and intersect the moving direction of the wire rope so as to be able to engage with a damaged portion of the moving wire rope;
A movement detecting device connected to the striatum for detecting movement of the striatum;
The movement detection device is configured to stop the driving of the wire rope drive device based on detecting the movement of the striatum,
A magnet outlet having a magnet connection type connection terminal, which is interposed in the driving circuit of the driving device, and an adapter that can be electrically connected by being magnetically attached to the magnet outlet, are electrically connected and a plug capable of electrically connecting to the adapter,
The driving circuit is in a connected state by short-circuiting the plug blades of the plug, and the above-mentioned filament is connected to the plug,
When the movement of the filament is detected , the drive circuit is shut off by disconnecting at least one of the connection between the magnet outlet and the adapter, or the connection between the adapter and the plug, and the drive device stops. damage detection apparatus Ruwa ear rope such is configured as. The linear body is inserted through the insertion part formed in the plug,
The end of the striate is elastically attached to a fixed part that cannot move through an extendable elastic member,
An engagement portion that cannot pass through the insertion portion is formed on the distal end side of the portion corresponding to the insertion portion of the linear body,
When the filament is moving, the engaging part engages with the insertion part of the plug, so that at least one of the connection between the magnetic outlet and the adapter or the connection between the adapter and the plug is cut off. The wire rope damage detection device according to claim 5 , wherein the wire rope damage detection device is configured to be able to do so. Elevator lifting wire rope with an elevator attached to one end and a counterweight attached to the other end;
A drive motor;
A drive sheave for winding the wire rope, which is rotationally driven by the drive motor;
A turning sheave disposed adjacent to the drive sheave;
A wire rope damage detection device disposed in proximity to at least one of the drive sheave and the turning sheave,
The lifting device, wherein the damage detection device is the damage detection device according to any one of claims 1 to 6 . An elevator for transporting vehicles;
A lifting device for lifting and lowering the elevator;
And parking shelves installed in multiple stages above and below the elevator hoistway,
An elevator type parking device, wherein the lifting device is the lifting device according to claim 7 .

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