JP7380954B2 - Detection device - Google Patents

Description

The present disclosure relates to a detection device used when performing detection regarding a chain.

Patent Document 1 describes a device for detecting chain elongation. The device described in Patent Document 1 includes a displacement meter. The chain is illuminated with light from the displacement meter, and the height of the chain is measured.

International Publication No. 2018/096615

FIG. 14 of Patent Document 1 shows that light from the displacement meter is irradiated to the positions shown in (a) to (c). Further investigation by the applicant revealed that it is preferable that the light from the displacement meter be irradiated to the position shown in (a) or the position shown in (b). However, since the link plate of the chain is thin, it is difficult to align the light from the displacement meter to the position shown in (a) or (b).

The present disclosure has been made to solve the problems described above. An object of the present disclosure is to provide a detection device that can irradiate the end face of a link plate of a chain with light from a displacement meter through a simple operation.

A detection device according to the present disclosure includes a rail arranged to cross above a chain along a first axis, and a support that is supported by the rail and moves along the first axis by being guided by the rail. The apparatus includes a device, a first guide member on which a first guide surface is formed and moves along the first axis together with the support device, and a holding member that moves along the first axis together with the support device. When the first guide member is arranged so that the first guide surface hits the first link plate of the chain from the side, light from the displacement meter held by the holding member illuminates the end face of the second link plate of the chain. be done.

By using the detection device according to the present disclosure, the end face of the link plate of the chain can be irradiated with light from the displacement meter through a simple operation.

It is a sectional view showing an example of an escalator. FIG. 3 is a side view showing an example of a drive chain. FIG. 3 is a plan view showing an example of a drive chain. FIG. 3 is a front view showing an example of a drive chain. 3 is a diagram showing an example of a detection device in Embodiment 1. FIG. 6 is a diagram showing a cross section taken along line AA in FIG. 5. FIG. 6 is a diagram showing an example in which the support device is moved to the left along the rail from the state shown in FIG. 5. FIG. 6 is a diagram corresponding to the AA cross section in FIG. 5. FIG. It is a figure showing other examples of a support device. It is a figure showing other examples of a support device. It is a figure showing other examples of a detection device. It is a figure which shows the other example of a guide member. It is a figure which shows the other example of a guide member.

A detailed explanation will be given below with reference to the drawings. Duplicate explanations will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1.
FIG. 1 is a sectional view showing an example of an escalator. First, an escalator will be explained with reference to FIG. The escalator includes a truss 1 and a step 2. The truss 1 spans the upper and lower floors. Passengers get on Step 2 and move from the boarding gate (not shown) to the getting off gate 3. That is, FIG. 1 shows an up escalator as an example.

A machine room 4 is provided below the exit 3. The machine room 4 is a space formed inside the truss 1. The machine room 4 is provided with an electric motor 5, a reduction gear 6, and a control device 7. Electric motor 5 drives sprocket 8 via reduction gear 6. Control device 7 controls electric motor 5 .

A drive chain 10 is wound around sprocket 9 and sprocket 8, which serve as the output of reduction gear 6. Sprockets 12 and 13 are provided on a shaft 11 on which sprocket 8 is provided. Sprockets 12 and 13 rotate together with sprocket 8. A step chain 14 is wound around the sprocket 12. A large number of step shafts 15 are provided in the step chain 14. A step 2 is fixed to each step shaft 15. As a result, a large number of steps 2 are connected to the step chain 14. The step 2 moves by being pulled by the step chain 14.

A handrail chain 16 is wound around the sprocket 13. The handrail chain 16 transmits the driving force of the electric motor 5 to the drive device 17. The drive device 17 drives the moving handrail 18.

Next, the structure of the drive chain 10 will be described with reference to FIGS. 2 to 4. FIG. 2 is a side view showing an example of the drive chain 10. FIG. 3 is a plan view showing an example of the drive chain 10. FIG. 4 is a front view showing an example of the drive chain 10. The drive chain 10 includes an inner link 20 and an outer link 21.

The inner link 20 includes inner plates 22a and 22b, bushes 23a and 23b, and rollers 24a and 24b. Inner plate 22a and inner plate 22b are arranged to face each other. Bushing 23a connects one end of inner plate 22a and one end of inner plate 22b. Bushing 23b connects the other end of inner plate 22a and the other end of inner plate 22b. Bush 23a and bush 23b are arranged in parallel.

The roller 24a is rotatably provided on the bush 23a. Bush 23a passes through roller 24a. The roller 24a is arranged between the inner plate 22a and the inner plate 22b. The roller 24b is rotatably provided on the bush 23b. Bush 23b passes through roller 24b. The roller 24b is arranged between the inner plate 22a and the inner plate 22b.

The outer link 21 includes outer plates 25a and 25b and pins 26a and 26b. The outer plate 25a and the outer plate 25b are arranged to face each other with the inner link 20 in between. The pin 26a connects one end of the outer plate 25a and one end of the outer plate 25b. Pin 26a passes through bush 23b. The pin 26b connects the other end of the outer plate 25a and the other end of the outer plate 25b. Pin 26b passes through bush 23a. Thereby, the outer link 21 and the inner link 20 are connected.

In the example shown in this embodiment, the inner plate 22a, the inner plate 22b, the outer plate 25a, and the outer plate 25b are examples of link plates included in the chain.

In escalators, elongation of each chain is detected during periodic inspections. As an example, in order to detect elongation of the chain, light is irradiated from the displacement meter 30 onto the moving chain. The signal processing device 31 detects the elongation of the chain based on the detection result by the displacement meter 30. Detection of chain elongation is performed, for example, by a method similar to the method described in International Publication No. 2018/096615. FIG. 1 shows an example of detecting elongation of a drive chain 10.

In order to detect chain elongation using a method similar to the method described in International Publication No. 2018/096615, it is preferable to apply light from the displacement meter 30 to the end face of the link plate. In the example shown in FIG. 14 of International Publication No. 2018/096615, it is preferable to apply the light from the displacement meter 30 to the position shown in (a) or the position shown in (b).

Below, with reference also to FIGS. 5 to 7, a device for arranging the displacement meter 30 at an appropriate detection position will be described. In the following, this device is also referred to as a detection device. Further, below, an example of detecting elongation of the drive chain 10 will be described in detail.

FIG. 5 is a diagram showing an example of the detection device 32 in the first embodiment. FIG. 6 is a diagram showing a cross section taken along line AA in FIG. The detection device 32 includes a rail 33, a support device 34, a guide member 35, a guide member 36, and a holding member 37.

The rail 33 is arranged above and across the drive chain 10 along the X axis. In the example shown in this embodiment, the X-axis is a horizontal axis that is perpendicular to the direction in which drive chain 10 moves. The rail 33 is fixed to a fixed body 41 with bolts 40. The fixed body 41 is a member such as a beam provided on the truss 1 or a bracket fixed to the truss 1.

The support device 34 is supported by the rail 33. The support device 34 moves along the X-axis by being guided by the rails 33. The guide member 35 , the guide member 36 , and the holding member 37 are supported by the support device 34 . Therefore, the guide member 35, the guide member 36, and the holding member 37 move along the X-axis together with the support device 34.

In the example shown in FIGS. 5 and 6, the support device 34 includes a slider 42, a support arm 43, a pin 44, a support arm 45, a pin 46, a base 47, and an adjustment bolt 48.

The slider 42 is a member that comes into contact with the rail 33 and is directly guided by the rail 33. In the example shown in FIGS. 5 and 6, the slider 42 is arranged to face the side surface of the rail 33.

The support arm 43 is, for example, a rod-shaped member with a circular cross section. The upper end of the support arm 43 is fixed to the slider 42 . Support arm 43 extends downward from slider 42 . A guide member 35 is provided at the lower end of the support arm 43 via a pin 44 . The pin 44 is arranged along the X-axis. That is, the guide member 35 is provided on the support arm 43 so as to be movable around the pin 44 .

A guide surface 35a is formed on the guide member 35. In the example shown in FIGS. 5 and 6, the guide member 35 is plate-shaped. The guide surface 35a is a plane perpendicular to the X-axis. The guide surface 35a may be curved so as to protrude toward the guide member 36 side.

The support arm 45 is, for example, a rod-shaped member with a circular cross section. The upper end of the support arm 45 is fixed to the slider 42 . Support arm 45 extends downward from slider 42 . Support arm 45 is arranged parallel to support arm 43. A guide member 36 is provided at the lower end of the support arm 45 via a pin 46 . The pin 46 is arranged along the X axis. That is, the guide member 36 is provided on the support arm 45 so as to be movable around the pin 46. Preferably, pin 46 is arranged in line with pin 44.

A guide surface 36a is formed on the guide member 36. In the example shown in FIGS. 5 and 6, the guide member 36 is plate-shaped. The guide surface 36a is a plane perpendicular to the X-axis. The guide surface 36a is arranged to face the guide surface 35a. The guide surface 36a may be curved so as to protrude toward the guide member 35 side.

The base 47 is provided on the support arm 43 and the support arm 45. In the example shown in FIGS. 5 and 6, the support arm 43 and the support arm 45 penetrate the base 47. The base 47 is placed on the step portion 43a of the support arm 43 and the step portion 45a of the support arm 45. The base 47 may be fixed to the support arm 43 and the support arm 45.

The adjustment bolt 48 is supported by the base 47. The adjustment bolt 48 is an example of a member that is vertically displaceable with respect to the base 47. In the example shown in FIGS. 5 and 6, a screw hole 47a is formed in the base 47 in the vertical direction. The adjustment bolt 48 is attached to the screw hole 47a. Therefore, by rotating the adjustment bolt 48, the adjustment bolt 48 can be vertically displaced with respect to the base 47. The screw hole 47a is preferably arranged at an intermediate position between the support arm 43 and the support arm 45.

The holding member 37 is provided at the lower end of the adjustment bolt 48. The holding member 37 holds the displacement meter 30. Light is emitted downward from the displacement meter 30 held by the holding member 37. Preferably, the light is a laser. Moreover, it is preferable that the light from the displacement meter 30 passes between the guide surface 35a and the guide surface 36a.

The position of the guide member 35 is set so that the distance (interval) between the light from the displacement meter 30 held by the holding member 37 and the guide surface 35a matches the distance (interval) between the two link plates. . Specifically, as shown in FIGS. 5 and 6, when the guide member 35 is arranged so that the guide surface 35a hits the inner plate 22a from the side, the displacement meter 30 held by the holding member 37 Light is irradiated onto the upward end surface of the inner plate 22b from above.

Therefore, the escalator inspector fixes the rail 33 to the fixed body 41 using the bolts 40, and then moves the slider 42 to bring the guide member 35 into contact with the inner plate 22a from the outside. Thereby, the displacement meter 30 can be arranged so that the light from the displacement meter 30 is irradiated from above onto the upward end surface of the inner plate 22b. By using the detection device 32, the inspector can direct the light from the displacement meter 30 onto the end surface of the inner plate 22b with a simple operation.

5 and 6 show an example in which the two link plates are an inner plate 22a and an inner plate 22b. This is an example. Any combination of the above two link plates may be used. For example, if the guide member 35 is arranged so that the guide surface 35a hits the outer plate 25a from the side, the light from the displacement meter 30 may be irradiated onto the upward end surface of the inner plate 22b. As another example, when the guide member 35 is arranged so that the guide surface 35a hits the outer plate 25a from the side, the light from the displacement meter 30 may be irradiated onto the upward end surface of the outer plate 25b.

FIG. 7 is a diagram showing an example in which the support device 34 is moved to the left along the rail 33 from the state shown in FIG. Like the guide member 35, the guide member 36 is arranged so that the distance (interval) between the light from the displacement meter 30 held by the holding member 37 and the guide surface 36a matches the distance (interval) between the two link plates. Its position has been set. FIG. 7 shows an example in which the distance between the light from the displacement meter 30 and the guide surface 36a is the same as the distance between the light from the displacement meter 30 and the guide surface 35a. In such a case, if the guide member 36 is arranged so that the guide surface 36a hits the inner plate 22b from the side, the light from the displacement meter 30 held by the holding member 37 will be directed upward to the upward end surface of the inner plate 22a. irradiated from.

In the example shown in this embodiment, the detection device 32 includes a guide member 35 and a guide member 36. This is an example. The detection device 32 may include only the guide member 35 or only the guide member 36. However, if the detection device 32 includes both the guide member 35 and the guide member 36, the position of the displacement meter 30 can be adjusted from both the right and left sides of the chain.

FIG. 8 is a diagram corresponding to the AA cross section in FIG. 5. FIG. 8 shows an example in which the drive chain 10 has moved in the direction B from the state shown in FIG. For example, if the guide member 35 is applied to the inner plate 22a from the outside as shown in FIGS. 5 and 6, the guide member 35 will come into contact with the outer plate 25a when the drive chain 10 is moved.

In the example shown in this embodiment, the guide member 35 is provided on the support arm 43 so as to be movable around the pin 44 . Therefore, when the guide member 35 comes into contact with the outer plate 25a as the drive chain 10 moves, the guide member 35 rotates around the pin 44. In the example shown in this embodiment, after the position adjustment of the displacement meter 30 is completed, the guide member 35 may be moved so that it does not interfere with detection, or the guide member 35 may be removed from the support arm 43. do not have to. Therefore, the elongation of the drive chain 10 can be easily detected.

Other functions that can be adopted by the detection device 32 will be described below. If possible, the detection device 32 may employ a combination of a plurality of functions described below.

The detection device 32 may further include a cleaning member that is detachable from the holding member 37. In the example shown in FIG. 5, the light from the displacement meter 30 is irradiated onto the upward end surface of the inner plate 22b. Therefore, if the end surface of the inner plate 22b is dirty, it becomes impossible to accurately detect the elongation of the drive chain 10.

When the detection device 32 includes a cleaning member, the inspector attaches the cleaning member to the holding member 37 before performing detection using the displacement meter 30. Then, with the cleaning member attached to the holding member 37, the drive chain 10 is moved. Thereby, the end surface of the inner plate 22b can be cleaned by the cleaning member. When the cleaning member finishes cleaning, the inspector removes the cleaning member from the holding member 37 and attaches the displacement meter 30 to the holding member 37.

FIG. 9 is a diagram showing another example of the support device 34. In the example shown in FIG. 9, the slider 42 is formed with a through hole 42a through which the adjustment bolt 48 passes. The adjustment bolt 48 passes through the through hole 42a and projects above the slider 42. In the example shown in FIG. 8, maintenance personnel can easily operate the adjustment bolt 48. In particular, when cleaning with a cleaning member, it is necessary to lightly apply the cleaning member to the end surface of the inner plate 22b. In the example shown in FIG. 8, the cleaning member can be easily moved up and down.

FIG. 10 is a diagram showing another example of the support device 34. FIG. 10 corresponds to the AA cross section in FIG. The example shown in FIG. 10 differs from the examples shown in FIGS. 5 and 6 in that the slider 42 includes a guide member 49 and a displacement member 50.

The guide member 49 is a member that contacts the rail 33 and is directly guided by the rail 33. The guide member 49 is arranged to face the side surface of the rail 33.

The displacement member 50 is supported by the guide member 49. The displacement member 50 is vertically displaceable with respect to the guide member 49. Support arm 43 and support arm 45 are provided on displacement member 50 and extend downward from displacement member 50 . That is, the upper end of the support arm 43 is fixed to the displacement member 50. The upper end of the support arm 45 is fixed to the displacement member 50. Therefore, the guide member 35, the guide member 36, and the holding member 37 move along the X axis together with the guide member 49. The guide member 35, the guide member 36, and the holding member 37 move up and down together with the displacement member 50.

In the example shown in FIG. 10, the vertical positions of the guide member 35, guide member 36, and holding member 37 can also be easily adjusted.

FIG. 11 is a diagram showing another example of the detection device 32. FIG. 11 corresponds to the AA cross section in FIG. In the example shown in FIG. 11, the slider 42 is arranged to face the upper surface of the rail 33. The width of the slider 42 is greater than the width of the rail 33. Therefore, the slider 42 is arranged so as to protrude from both sides of the rail 33.

The support arm 43 and the support arm 45 are arranged on one side of the rail 33, similar to the example shown in FIGS. 5 and 6. Each of support arms 43 and 45 extends downward from rail 33.

The detection device 32 shown in FIG. 11 includes a support arm 51 and a support arm 52 (not shown) in addition to the support arm 43 and the support arm 45. Support arm 51 and support arm 52 are arranged on the other side of rail 33. Each of support arm 51 and support arm 52 extends downward from rail 33. The rail 33 is arranged to pass between the support arm 43 and the support arm 51. Further, the rail 33 is arranged to pass between the support arm 45 and the support arm 52.

The base 47 is provided on the support arm 43, the support arm 45, the support arm 51, and the support arm 52.

In the example shown in FIG. 11, the rigidity of the detection device 32 can be increased, and the detection accuracy by the displacement meter 30 can be further improved.

FIG. 12 is a diagram showing another example of the guide member 35. The guide member 35 shown in FIG. 12 is formed with a guide surface 35b in addition to the guide surface 35a. FIG. 12 shows a state in which the guide surface 35a contacts the inner plate 22b from the side. The guide surface 35b contacts from above the inner plate 22b, which the guide surface 35a contacts from the side. In the example shown in FIG. 12, the position of the displacement meter 30 in the vertical direction can be adjusted more easily.

FIG. 13 is a diagram showing another example of the guide member 35. The guide member 35 shown in FIG. 13 has a portion that covers the link plate of the chain from above. A guide surface 35a and a guide surface 35b are formed in this portion of the guide member 35. In the example shown in FIG. 13, it can be easily confirmed that the guide surface 35a is arranged at an appropriate position with respect to the link plate.

In this embodiment, an example in which the end face of the drive chain 10 is irradiated with light from the displacement meter 30 has been described in detail. This is an example. The detection device 32 may be used when the light from the displacement meter 30 is irradiated onto the end face of another chain provided on the escalator. The detection device 32 may be used when the light from the displacement meter 30 is irradiated onto the end face of a chain provided in a device other than an escalator.

The detection device according to the present disclosure can be used to illuminate the end face of a chain with light from a displacement meter.

1 truss, 2 step, 3 exit, 4 machine room, 5 electric motor, 6 speed reducer, 7 control device, 8 sprocket, 9 sprocket, 10 drive chain, 11 shaft, 12 sprocket, 13 sprocket, 14 step chain, 15 step shaft, 16 handrail chain, 17 drive device, 18 moving handrail, 20 inner link, 21 outer link, 22a-22b inner plate, 23a-23b bushing, 24a-24b roller, 25a-25b outer plate, 26a-26b pin, 30 displacement meter, 31 signal processing device, 32 detection device, 33 rail, 34 support device, 35 guide member, 35a guide surface, 35b guide surface, 36 guide member, 36a guide surface, 37 holding member, 40 bolt, 41 fixed body , 42 slider, 42a through hole, 43 support arm, 43a step, 44 pin, 45 support arm, 45a step, 46 pin, 47 base, 47a screw hole, 48 adjustment bolt, 49 guide member, 50 displacement member

Claims (8)

a rail disposed across the top of the chain along the first axis;
a support device that is supported by the rail and moves along the first axis by being guided by the rail;
a first guide member having a first guide surface formed thereon and moving along the first axis together with the support device;
a holding member that moves along the first axis together with the support device;
Equipped with
When the first guide member is arranged so that the first guide surface hits the first link plate of the chain from the side, light from the displacement meter held by the holding member hits the second link of the chain. A detection device that illuminates the edge of the plate. The support device is
a slider guided by the rail;
a support arm extending downward from the slider;
Equipped with
The detection device according to claim 1, wherein the first guide member is provided on the support arm. The support device further includes a pin arranged along the first axis,
3. The detection device according to claim 2, wherein the first guide member is provided on the support arm so as to be movable around the pin. The slider is
a guide member that contacts the rail;
a first displacement member supported by the guide member and movable up and down with respect to the guide member;
Equipped with
The detection device according to claim 2 or 3, wherein the support arm is provided on the first displacement member. 5. The detection device according to claim 4, wherein the first guide member is formed with a second guide surface that contacts from above the first link plate that the first guide surface contacts from the side. The support device is
a base provided on the support arm;
a second displacement member supported by the base and movable up and down with respect to the base;
further comprising;
The detection device according to any one of claims 2 to 5, wherein the holding member is provided on the second displacement member. Further comprising a second guide member having a third guide surface formed opposite to the first guide surface and moving along the first axis together with the support device,
When the second guide member is arranged so that the third guide surface hits the second link plate from the side, light from the displacement meter held by the holding member hits the end face of the first link plate. The detection device according to any one of claims 1 to 6, wherein the detection device is irradiated. Further comprising a cleaning member detachable from the holding member ,
The detection device according to any one of claims 1 to 7, wherein the end surface of the second link plate can be cleaned by the cleaning member attached to the holding member .

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