JP7224269B2 - Elevator control cable shooting system - Google Patents

Description

TECHNICAL FIELD The present invention relates to an elevator control cable imaging system, and more particularly to facilitating imaging of the U-shaped hanging lower end of a control cable that moves in accordance with the movement of a car.

The elevator control cable is connected to the lower end of the car that moves in the elevator hoistway and the elevator control device installed in the machine room above the hoistway, and moves up and down according to the movement of the car. . If the control cable tends to sway back and forth and left and right when the car moves, it is likely to be damaged by contact with the wall of the hoistway and components arranged near the wall. For this reason, conventionally, workers in the pit at the lower end of the hoistway observe the movement of the control cable when the car moves, and confirm whether there is any abnormality in the movement. .

Japanese Patent Laid-Open No. 2004-100002 describes checking the video of the dynamic characteristics of the control cable using a surveillance camera installed on the underside of the car.

JP 2008-1494 A

As described above, when a worker in the pit observes the movement of the control cable while the car is moving and checks for abnormalities, the worker must be in the pit while the car is moving. burden on workers. In addition, since the operator looks up at the control cable from the pit, it is difficult to check the movement of the control cable when the lower end of the control cable is at a high position.

On the other hand, in the configuration described in Patent Literature 1, one end of the control cable is connected to the elevator control device and its position is fixed. As a result, when the car to which the other end of the control cable is connected moves, the lower end of the control cable hanging in a U-shape moves up and down by only 1/2 of the moving distance of the car. Therefore, the position at which the camera fixed to the car faces is shifted from the position of the lower end of the control cable depending on the position of the car when it is moved.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator control cable photographing system that facilitates excellent photographing of the lower end of a control cable regardless of the position of the car when the car is moving.

The elevator control cable imaging system of the present invention comprises a control cable connected to a lower end of a car moving in an elevator hoistway and an elevator control device installed in a machine room above the hoistway. A photographing system for photographing the lower end of the car that hangs down in a U-shape that moves up and down according to the movement of the car, the guide cable being stretched between the lower end of the car and the pit floor, A guide cable that can be wound by a first winder disposed on one of the car and the pit floor, and a camera hoisting cable that is pulled out from a second winder fixed to the lower end of the car. , a camera suspended by being fixed to the lower end of the camera suspending cable, the vertical movement thereof being guided by the guide cable, and photographing the lower end of the control cable; 3 a camera suspension cable pulled out from a winder, the upper end of which is fixed to the camera, and stretched between the camera and the third winder; the first winder; It is connected between a winder or a one-side winder of the third winder, and the one-side winder rotates 1/2 when the first winder rotates once. and a rotation adjustment mechanism for adjusting the rotation of the one-side winder, wherein the first winder, the second winder and the third winder are attached in the direction in which the corresponding cable is wound. are being forced.

According to the elevator control cable photography system of the present invention, when the car moves, the guide cable is pulled out or wound up by the same distance as the car moves. At this time, the pull-out length of the cable pulled out from the one-side winder changes by half the change in the pull-out length of the guide cable by the rotation adjustment mechanism. Furthermore, the cable pulled out from the other side winder is forced between the other side winder and the camera by urging the other side winder of the second winder or the third winder in the winding direction. stretched. As a result, the camera moves in the moving direction of the car by 1/2 of the moving distance of the car, which is the change in the length of the cable pulled out from the one-side winder. For this reason, when the car is moved, the moving distance of the camera and the moving distance of the lower end of the control cable hanging in a U-shape are the same. It becomes easy to maintain the state facing the part, and it becomes easy to photograph the lower end part well.

In the elevator control cable photography system of the present invention, the first winder is arranged on the pit floor, and the rotation adjustment mechanism is connected between the first winder and the third winder. It may be configured to be

According to this configuration, the first winder and the rotation adjustment mechanism are arranged on the pit floor, eliminating the need to arrange the first winder and the rotation adjustment mechanism on the car. As a result, the weight of the parts fixed to the car can be reduced, so that the energy required to drive the car can be reduced.

According to the elevator control cable photographing system of the present invention, the lower end of the control cable can be photographed satisfactorily and easily regardless of the moving position of the car when the car is moving.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the elevator which applies the control cable imaging system of embodiment. FIG. 2 is an enlarged view corresponding to part A of FIG. 1 showing a partial cross-section of the elevator of FIG. 1 combined with a control cable photography system, showing a state when the car is raised. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2; FIG. 3 is a diagram showing a state when the car is lowered in FIG. 2;

Hereinafter, embodiments will be described with reference to the drawings. The shapes, materials, numbers, etc. described below are examples for explanation, and can be changed as appropriate by using the control cable photography system or the elevator. In the following description, the same reference numerals are assigned to the same elements in all the drawings.

First, an elevator to which the control cable imaging system of the embodiment is applied will be described. FIG. 1 is an overall configuration diagram of an elevator 10. As shown in FIG. The elevator 10 has a car 11 movably arranged in a hoistway 80 . The hoistway 80 is arranged to extend vertically inside the building in which the elevator 10 is installed. One end of a main rope 12 is connected to the upper end of the car 11, and a counterweight 13 is connected to the other end of the main rope 12. - 特許庁A hoist 82 is installed in a machine room 81 above the hoistway 80 . The main rope 12 is wound around the hoist 82 . The main rope 12 moves longitudinally as the hoist 82 is driven. The hoist 82 is controlled by an elevator controller 84 installed in the machine room 81 . As a result, the car 11 moves vertically within the hoistway 80 .

A control cable 15 is led out from the lower side of the car 11, and the lower end of the control cable 15 hangs down in a U shape. Control cable 15 is connected to the lower end of car 11 and to elevator controller 84 . The control cable 15 bundles, for example, a signal line for transmitting and receiving control signals between the car 11 and the elevator control device 84 and a power line for supplying power to the car 11, and is covered with an insulating material. Constructed as a book cable. As the car 11 moves, the lower end G of the control cable 15 moves up and down.

When such a control cable 15 swings greatly, the control cable 15 collides with the wall surface of the hoistway 80, collides with and damages the equipment and members installed in the hoistway 80, and also damages the control cable 15 itself. There is a risk. The control cable photographing system 20 (FIG. 2) of this example is used for photographing the lower end of the control cable 15 while the car 11 is moving. The photographed image obtained by the control cable photographing system 20 is used by an inspector to confirm whether or not there is an abnormality in the movement of the control cable 15 during movement of the car 11 . If an abnormality such as a large sway is found in the movement of the lower end G of the control cable 15, the control cable 15 and the supporting parts of the control cable 15 should be inspected, repaired or replaced while the elevator 10 is stopped. done.

FIG. 2 is an enlarged view corresponding to part A of FIG. 1 showing a part of the elevator 10 combined with the control cable photographing system 20 in cross section, showing a state when the car 11 is raised. 3 is a cross-sectional view taken along line BB of FIG. 2. FIG. The control cable imaging system 20 is hereinafter referred to as the imaging system 20 .

The imaging system 20 includes a guide cable 21 , a camera suspension cable 31 , a camera 41 , a camera suspension cable 51 and a rotation adjustment mechanism 61 . The photographing system 20 photographs the lower end portion G of the control cable 15 with the camera 41 .

The guide cable 21 is stretched between the lower end of the car 11 and the pit floor 85 which is the lower end of the hoistway 80 . The guide cable 21 can be wound on a first winder 22 located on the pit floor 85 .

The first winder 22 includes a first winder 24 whose shafts at both ends are rotatably supported by two plate-like first supports 23 fixed to the pit floor 85 . The guide cable 21 can be wound around the outer peripheral surface of the first winding body 24 . The first winding body 24 is urged in the winding direction (arrow α direction in FIG. 3) of the guide cable 21, which is the corresponding cable, by the first biasing means 26 disposed between the first support portion 23 and the first winding body 24. are being forced. The first biasing means 26 is, for example, a spiral spring. The upper end of the guide cable 21 is fixed to the lower end of the car 11 . The guide cable 21 passes through a guide hole 42 formed in the camera 41 as will be described later, and is provided to guide the vertical movement of the camera 41 . In this example, the first winder 22 is located on the pit floor 85, but the first winder 22 can also be located on the car 11, as described below.

The camera suspension cable 31 is drawn downward from a second winder 32 fixed to the lower end of the car 11 . The second winder 32 includes a second winder 34 whose shafts at both ends are rotatably supported by two plate-shaped second supports 33 fixed to the lower end of the car 11 . The second winding body 34 can wind the camera suspension cable 31 around its outer peripheral surface. The second winding body 34 is biased by a second biasing means 36 disposed between the second winding body 34 and the second support portion 33 in the direction of winding the corresponding cable, ie, the camera suspension cable 31 . The second biasing means 36 is, for example, a spiral spring. The lower end of the camera suspension cable 31 pulled out from the second winder 32 is fixed to the upper end of the camera 41, which will be described later.

The guide cable 21 and the camera hoisting cable 31 are cable-shaped members, and are made of metal members such as steel tapes and steel wires that are flexible and highly rigid against tension. The guide cable 21 and the camera suspension cable 31 may each be made of a high-strength resin wire used for fishing line or the like. For example, as each of the cables 21 and 31, a resin wire made by weaving ultrafine polyethylene into one wire can be used. A high-strength rope may be used as each of the cables 21 and 31 .

The camera suspension cable 51 is pulled out from the third winder 52 arranged on the pit floor 85, and the upper end of the camera suspension cable 51 is the width of the lower end on one longitudinal direction side (right side in FIG. 2) of the camera 41. It is fixed at the center of the direction (front and back direction of the paper surface of FIG. 2). Thereby, the camera suspension cable 51 is stretched between the camera 41 and the third winder 52 . The camera suspension cable 51 is configured similarly to the camera suspension cable 31 .

Similar to the first winder 22, the third winder 52 is a third winder whose shafts at both ends are rotatably supported by two plate-shaped third supports 53 fixed to the pit floor 85. A take-up body 54 is included. The third winding body 54 can wind the camera suspension cable 51 around its outer peripheral surface. The shaft of the third wound body 54 is arranged parallel to the shaft of the first wound body 24 . The third winding body 54 is rotated in a direction (direction of arrow β in FIG. 3) in which the camera suspension cable 51, which is a corresponding cable, is wound by a third biasing means 56 arranged between the third winding body 54 and the third supporting portion 53 . is energized by The third biasing means 56 is, for example, a spiral spring. One of the first biasing means 26 and the third biasing means 56 may be omitted. For example, even if the third biasing means 56 is omitted, the first biasing means 26 causes the third winding body 54 to move from the camera suspension cable 51 through a rotation adjustment mechanism 61 (FIG. 2), which will be described later. It can be biased in the winding direction β (FIG. 3). Thereby, the urging means can be reduced.

The rotation adjustment mechanism 61 is connected between the first winder 22 and the third winder 52 . Specifically, the rotation adjustment mechanism 61 is a gear mechanism, and includes a first gear 62 fixed to one end of the shaft of the first winding body 24 and one end of the shaft of the third winding body 54. The first gear 62 and the third gear 63 mesh with each other. The cable winding portion of the first winding body 24 and the cable winding portion of the third winding body 54 are arranged on both sides of the rotation adjustment mechanism 61 . The third winder 52 corresponds to one side winder of the second winder 32 or the third winder 52 . The rotation adjustment mechanism 61 adjusts the rotation of the third winder 52 so that the third winder 52 rotates 1/2 when the first winder 22 rotates once. For this reason, for example, as shown in FIG. 3, the number of teeth of the first gear 62 is half the number of teeth of the third gear 63 .

In the photographing system 20 described above, the axial directions of the first winder 22 , the second winder 32 and the third winder 52 are parallel to the longitudinal direction of the camera 41 .

The camera 41 is fixed to the lower end of the upper camera suspension cable 31 at the center of the upper end in the width direction (front and back direction of the paper surface of FIG. 2) on one longitudinal side (right side in FIG. 2) along the horizontal direction. , suspended below the car 11 . In this state, the camera 41 has the lens 43 arranged at the other longitudinal end (the left end in FIG. 2) facing the U-shaped lower end of the control cable 15 (the left in FIG. 2). Take a picture of G.

The camera 41 has a guide hole 42 penetrating in the vertical direction at the center of the width direction along the horizontal direction (front and back direction of the paper surface of FIG. 2) on the other side in the longitudinal direction (left side in FIG. 2). The guide cable 21 passes through this guide hole 42 . A cross section orthogonal to the longitudinal direction (the vertical direction in FIG. 2) of the guide hole 42 has a circular or rectangular shape that is substantially the same as or slightly larger than the outer shape of the cross section of the guide cable 21 . As a result, the vertical movement of the camera 41 is guided by the guide cable 21, and the camera 41 is suspended by the camera suspension cable 31 at a position different from the guide hole 42, thereby stabilizing the posture of the camera 41. can be made

The camera 41 may have a communication unit capable of wireless communication with a remote control device (not shown). By operating the remote control device, the switch of the camera 41 can be turned on and the camera 41 can be put into the photographing mode. The camera 41 can be configured to have a function of intermittently capturing still images or a function of capturing moving images. An image captured by the camera 41 can be recorded, for example, in an internal storage device such as a memory in the camera 41 or a recording medium such as a memory card such as an SD card. When the photographing by the camera 41 is finished, the inspector lowers the car 11 to the lowest floor and removes the camera 41 and the recording medium. Then, the camera 41 can be connected to an external device such as a computer or a mobile information terminal such as a smart phone or a PDA, and the photographed image recorded in the internal storage device can be checked with the external device, or the recording medium can be transferred to the external device. Connect and check the captured image recorded on the recording medium.

An image captured by the camera 41 is sent to an external device such as a computer or a mobile information terminal such as a smartphone via wireless communication, so that the operator can check the captured image without removing the camera or recording medium. may be

According to the photographing system 20 described above, when the car 11 moves, the guide cable 21 is pulled out or wound up by the same distance as the car 11 moves. At this time, the pull-out length of the camera suspension cable 51 pulled out from the third winder 52 is changed by a half of the change in the pull-out length of the guide cable 21 by the rotation adjustment mechanism 61 . Further, the camera hoisting cable 31 pulled out from the second winder 32 is stretched between the second winder 32 and the camera 41 by urging the second winder 32 in the winding direction. As a result, the camera 41 moves in the moving direction of the car 11 by half the moving distance of the car 11, which is the change in the length of the camera suspension cable 51 pulled out from the third winder 52. do.

For example, as shown in FIG. 2, consider the case where the car 11 rises by 2L. At this time, the guide cable 21 is pulled out from the first winder 22 by the same amount as the moving distance of the car 11, ie, 2L. At this time, the rotation adjustment mechanism 61 increases the length of the camera suspension cable 51 pulled out from the third winder 52 by 1/2 of the change in the length of the guide cable 21 pulled out, that is, by L ( pulled out). Furthermore, the length of the camera suspension cable 31 pulled out from the second winder 32 is increased (pulled out) by L so as to compensate for the difference between the length of the guide cable 21 pulled out and the length of the camera suspension cable 51 pulled out. . As a result, the camera 41 moves the car 11 by 1/2 of the movement distance of the car 11, that is, by L, which is the change in the length of the camera suspension cable 51 pulled out from the third winder 52. direction to the top of FIG. At this time, as the car 11 rises, the lower end G of the control cable 15 hanging down in a U shape also moves upward in FIG.

FIG. 4 is a diagram showing a state when the car 11 is lowered in FIG. Consider the case where the car 11 is lowered by 2L as shown in FIG. At this time, the guide cable 21 is wound by the first winder 22 by the same amount as the moving distance of the car 11, ie, 2L. At this time, the length of the camera suspension cable 51 pulled out from the third winder 52 is reduced by the rotation adjustment mechanism 61 by 1/2 of the change in the length of the guide cable 21 pulled out, that is, by L ( rolled up). Further, the camera hoisting cable 31 pulled out from the second winder 32 is stretched between the second winder 32 and the camera 41 by urging the second winder 32 in the winding direction. At this time, the pull-out length of the camera suspension cable 31 is reduced (wound up) by L so as to compensate for the difference between the pull-out length of the guide cable 21 and the pull-out length of the camera suspension cable 51 . As a result, the camera 41 moves the car 11 by 1/2 of the moving distance of the car 11, which is the change in the length of the camera suspension cable 51 pulled out from the third winder 52, that is, by L. Move to the bottom of FIG. 4, which is the direction. At this time, due to the descent of the car 11, the lower end G of the control cable 15 hanging in a U shape also moves downward by 1/2 of the moving distance of the car 11, ie, L, in FIG.

As described above, in this example, when the car 11 moves, the moving distance of the camera 41 is the same as the moving distance of the lower end G of the control cable 15 hanging down in a U-shape. Regardless of the moving position of the car 11, the camera 41 can be easily maintained facing the lower end of the control cable 15, and the lower end G thereof can be photographed satisfactorily.

Further, since the guide cable 21 passes through the guide hole 42 of the camera 41 and guides the vertical movement of the camera 41, it is easy to stabilize the posture of the camera 41 during movement. In addition, since the camera 41 is fixed by the camera suspension cable 51 and the camera suspension cable 31, the horizontal shaking of the camera 41 can be suppressed. This also makes it easier to photograph the lower end G of the control cable 15 satisfactorily.

Furthermore, in the case of this example, the first winder 22 is located on the pit floor 85 and the rotation adjustment mechanism 61 is connected between the first winder 22 and the third winder 52. . This eliminates the need to dispose the first winder 22 and the rotation adjustment mechanism 61 on the car 11, so that the weight of the parts fixed to the car 11 can be reduced. Therefore, the energy for driving the car 11 can be reduced.

Although the first winder 22 is arranged on the pit floor 85 in this example, the first winder 22 may be arranged on the car 11 . For example, the first support portion 23 of the first winder 22 is fixed to the lower end of the car 11, the lower end of the guide cable 21 pulled out from the first winder 22 is fixed to the pit floor 85, and the car 11 is A guide cable 21 may be stretched between the lower end of the pit and the pit floor 85 . The guide cable 21 guides the vertical movement of the camera 41 .

When the guide cable 21 has a long strip shape and the guide hole 42 of the camera 41 through which the guide cable 21 passes has a rectangular cross section, the camera 41 is guided by a guide cable having a circular cross section. It becomes easier to suppress the lateral sway of the

1 to 4, the rotation adjustment mechanism may be a gear mechanism other than a pulley belt mechanism. For example, a pulley belt mechanism including a small-diameter pulley on the first winder 22 side, a large-diameter pulley on the third winder 52 side, and a belt wound around the small-diameter pulley and the large-diameter pulley may be used. At this time, by setting the diameter of the belt winding portion of the large-diameter pulley to be twice the diameter of the belt winding portion of the small-diameter pulley, the rotation adjustment mechanism can rotate the first winder 22 when the first winder 22 rotates once. The rotation of the third winder 52 is adjusted so that the third winder 52 rotates 1/2.

10 elevator, 11 car, 12 main rope, 13 counterweight, 15 control cable, 20, 20a control cable imaging system (imaging system), 21 guide cable, 22 first winder, 23 first support, 24 second 1 Winding Body 26 First Biasing Means 31 Camera Suspension Cable 32 Second Winding Device 33 Second Support Part 34 Second Winding Body 36 Second Biasing Means 41 Camera 42 Guide hole, 43 lens, 51 camera suspension cable, 52 third winder, 61 rotation adjustment mechanism, 62 first gear, 63 third gear, 80 hoistway, 81 machine room, 82 hoist, 84 elevator control device, 85 Pit floor.

Claims (2)

A control cable connected to a lower end of a car moving in an elevator hoistway and an elevator control device installed in a machine room above the hoistway moves up and down according to the movement of the car. A photographing system for photographing a lower end portion that hangs down in a U shape,
a guide cable stretched between the lower end of the car and the pit floor, the guide cable being windable by a first winder disposed at one of the car and the pit floor;
a camera hoisting cable pulled out from a second winder fixed to the lower end of the car;
a camera that is suspended by being fixed to the lower end of the camera suspension cable, whose vertical movement is guided by the guide cable, and that photographs the lower end of the control cable;
a camera suspension cable pulled out from a third winder arranged on the pit floor, having an upper end fixed to the camera, and stretched between the camera and the third winder;
It is connected between the first winder and a one-side winder of the second winder or the third winder, and the one-side winder is connected when the first winder rotates once. a rotation adjustment mechanism that adjusts the rotation of the one-side winder so that the winder rotates 1/2,
the first winder, the second winder and the third winder are biased in a direction to wind the corresponding cable;
Elevator control cable shooting system. In the elevator control cable imaging system according to claim 1,
The first winder is arranged on the pit floor,
The rotation adjustment mechanism is connected between the first winder and the third winder,
Elevator control cable shooting system.

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