CN117580794A

CN117580794A - Detection device

Info

Publication number: CN117580794A
Application number: CN202180100246.4A
Authority: CN
Inventors: 奥田龙
Original assignee: Mitsubishi Electric Building Solutions Corp
Current assignee: Mitsubishi Electric Building Solutions Corp
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2024-02-20
Also published as: JP7380954B2; KR102638080B1; WO2023281583A1; KR20240008411A; JPWO2023281583A1

Abstract

The detection device (32) is provided with a rail (33), a support device (34), a guide member (35), and a holding member (37). The support means (34) is moved along the X-axis by being guided by a rail (33). When the guide member (35) is arranged such that the guide surface (35 a) is in contact with the inner plate (22 a) of the chain from the side, light from the displacement meter (30) held by the holding member (37) is irradiated to the end surface of the inner plate (22 b) of the chain.

Description

Detection device

Technical Field

The present disclosure relates to a detection device used in performing detection related to a chain.

Background

Patent document 1 describes a device for detecting elongation of a chain. The device described in patent document 1 includes a displacement meter. The light from the displacement meter is irradiated to the chain, and the height of the chain is measured.

Prior art literature

Patent literature

Patent document 1: international publication No. 2018/096615

Disclosure of Invention

Problems to be solved by the invention

Fig. 14 of patent document 1 shows positions (a) to (c) where light from the displacement meter is irradiated. As is clear from further investigation by the applicant, the light from the displacement meter is preferably irradiated to the position shown in (a) or the position shown in (b). However, since the link plates of the chain are thin, it is difficult to match the light from the displacement meter with the position shown in (a) or the position shown in (b).

The present disclosure has been made to solve the above-described problems. The purpose of the present disclosure is to provide a device for detecting the end surface of a link plate of a chain, which can irradiate light from a displacement meter to the end surface by a simple operation.

Means for solving the problems

The detection device of the present disclosure comprises: a track configured to traverse over the chain along a first axis; a support device supported by the rail and guided by the rail to move along the first axis; a first guide member formed with a first guide surface and moving along a first axis together with the supporting means; and a holding member that moves along the first axis together with the supporting means. When the first guide member is disposed so that the first guide surface contacts the first link plate of the chain from the side, light from the displacement meter held by the holding member is irradiated to the end surface of the second link plate of the chain.

Effects of the invention

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

Drawings

Fig. 1 is a cross-sectional view showing an example of an escalator.

Fig. 2 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. 4 is a front view showing an example of a drive chain.

Fig. 5 is a diagram showing an example of the detection device in embodiment 1.

Fig. 6 is a view showing a section A-A of fig. 5.

Fig. 7 is a view showing an example in which the support device is moved leftward along the rail from the state shown in fig. 5.

Fig. 8 is a view corresponding to section A-A of fig. 5.

Fig. 9 is a view showing another example of the supporting device.

Fig. 10 is a view showing another example of the supporting device.

Fig. 11 is a diagram showing another example of the detection device.

Fig. 12 is a view showing another example of the guide member.

Fig. 13 is a view showing another example of the guide member.

Detailed Description

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Duplicate descriptions are appropriately simplified or omitted. In the drawings, like reference numerals designate like or corresponding parts throughout the several views.

Embodiment 1.

Fig. 1 is a cross-sectional view showing an example of an escalator. First, an escalator will be described with reference to fig. 1. The escalator has a truss 1 and steps 2. Truss 1 is erected on the upper and lower floors. The passenger rides on the steps 2 and moves from a landing (not shown) to a landing 3. That is, fig. 1 shows an ascending escalator as an example.

A machine room 4 is arranged below the landing entrance 3. The machine room 4 is a space formed inside the truss 1. The machine room 4 is provided with a motor 5, a speed reducer 6, and a control device 7. The motor 5 drives a sprocket 8 via a reduction gear 6. The control device 7 controls the motor 5.

A drive chain 10 is wound around the sprocket 9 and the sprocket 8 which are the outputs of the speed reducer 6. The sprockets 12 and 13 are arranged on a shaft 11 provided with the sprocket 8. The sprockets 12 and 13 rotate together with the sprocket 8. Step chain 14 is wound around sprocket 12. A plurality of step shafts 15 are provided on the step chain 14. A step 2 is fixed to each step shaft 15. Thus, a plurality of steps 2 are connected to the step chain 14. The steps 2 are moved by being pulled by the step chain 14.

Around the sprocket 13, a handrail chain 16 is wound. The handrail chain 16 transmits the driving force of the motor 5 to the driving device 17. The driving device 17 drives the moving handrail 18.

Next, the structure of the drive chain 10 will be described with reference to fig. 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, bushings 23a and 23b, and rollers 24a and 24b. The inner plates 22a and 22b are disposed so as to face each other. The bush 23a connects one end of the inner plate 22a with one end of the inner plate 22 b. The bush 23b connects the other end portion of the inner plate 22a with the other end portion of the inner plate 22 b. The bush 23a is arranged parallel to the bush 23b.

The roller 24a is rotatably provided to the bush 23a. The bushing 23a penetrates the roller 24a. The roller 24a is disposed between the inner plates 22a and 22 b. The roller 24b is rotatably provided to the bush 23b. The bushing 23b penetrates the roller 24b. The rollers 24b are disposed between the inner plates 22a and 22 b.

The outer link 21 includes outer plates 25a and 25b, and pins 26a and 26b. The outer plates 25a and 25b are disposed so as to face each other with the inner links 20 interposed therebetween. The pin 26a connects one end of the outer plate 25a with one end of the outer plate 25 b. The pin 26a penetrates the bush 23b. The pin 26b connects the other end portion of the outer plate 25a with the other end portion of the outer plate 25 b. Pin 26b passes through bushing 23a. Thereby, the outer links 21 are coupled to the inner links 20.

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

In an escalator, elongation of each chain is detected in periodic inspection or the like. For example, light is irradiated from the displacement meter 30 to the moving chain in order to detect elongation of the chain. The signal processing device 31 detects the elongation of the chain based on the detection result of the displacement meter 30. The chain elongation is detected by a method similar to the method described in International publication No. 2018/096615, for example. Fig. 1 shows an example of detecting the elongation of the drive chain 10.

In order to detect the elongation of the chain in the same manner as in the method described in international publication No. 2018/096615, it is preferable to irradiate the light from the displacement meter 30 to the end surface of the link plate. In the case of the example shown in FIG. 14 of International publication No. 2018/096615, it is preferable that the light from the displacement meter 30 is irradiated to the position shown in (a) or the position shown in (b).

Hereinafter, a device for arranging the displacement meter 30 at an appropriate detection position will be described with reference to fig. 5 to 7. Hereinafter, this device will also be referred to as a detection device. In the following, an example of detecting the 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 embodiment 1. Fig. 6 is a view showing a section A-A of fig. 5. 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 configured to traverse along the X-axis above the drive chain 10. In the example shown in the present embodiment, the X axis is a horizontal axis perpendicular to the direction in which the drive chain 10 moves. The rail 33 is fixed to the fixing body 41 by bolts 40. The fixing body 41 is a member such as a beam provided in the truss 1 or a bracket fixed to the truss 1.

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

In the example shown in fig. 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 in contact with the rail 33, and is directly guided by the rail 33. In the example shown in fig. 5 and 6, the slider 42 is disposed so as to face the side surface of the rail 33.

The support arm 43 is a rod-shaped member having a circular cross section, for example. The upper end of the support arm 43 is fixed to the slider 42. The support arm 43 extends downward from the 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 disposed along the X-axis. That is, the guide member 35 is provided on the support arm 43 so as to be displaceable about the pin 44.

The guide member 35 has a guide surface 35a. In the example shown in fig. 5 and 6, the guide member 35 has a plate shape. 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.

The support arm 45 is a rod-shaped member having a circular cross section, for example. The upper end of the support arm 45 is fixed to the slider 42. The support arm 45 extends downward from the slider 42. The support arm 45 is disposed parallel to the support arm 43. A guide member 36 is provided at the lower end of the support arm 45 via a pin 46. The pins 46 are arranged along the X-axis. That is, the guide member 36 is provided to the support arm 45 so as to be displaceable about the pin 46. The pins 46 are preferably arranged in a straight line with respect to the pins 44.

The guide member 36 has a guide surface 36a. In the example shown in fig. 5 and 6, the guide member 36 has a plate shape. The guide surface 36a is a plane perpendicular to the X axis. The guide surface 36a is disposed so as to face the guide surface 35a. The guide surface 36a may be curved so as to protrude toward the guide member 35.

The base 47 is provided to the support arm 43 and the support arm 45. In the example shown in fig. 5 and 6, the support arms 43 and 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 also be fixed to the support arms 43 and 45.

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

The holding member 37 is provided at the lower end portion of the adjustment bolt 48. The holding member 37 holds the displacement meter 30. Light is irradiated downward from the displacement meter 30 held by the holding member 37. The light is preferably a laser. The light from the displacement meter 30 preferably 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 coincides with the distance (interval) between the two link plates. Specifically, as shown in fig. 5 and 6, when the guide member 35 is arranged such that the guide surface 35a contacts the inner plate 22a from the side, light from the displacement meter 30 held by the holding member 37 is irradiated from above to the upward end surface of the inner plate 22 b.

Therefore, after fixing the rail 33 to the fixing body 41 by using the bolts 40, the inspector of the escalator moves the slider 42 to bring the guide member 35 into contact with the inner panel 22a from the outside. Thus, the displacement meter 30 can be arranged such that the light from the displacement meter 30 is irradiated from above to the upward end face of the inner plate 22 b. By using the detection device 32, the inspector can irradiate the end face of the inner plate 22b with light from the displacement meter 30 by a simple operation.

Fig. 5 and 6 show examples in which the two link plates are the inner plates 22a and 22 b. This is an example. The combination of the two link plates may be any combination. For example, when the guide member 35 is disposed so that the guide surface 35a contacts the outer plate 25a from the side, the light from the displacement meter 30 may be irradiated to the upward end surface of the inner plate 22 b. As another example, when the guide member 35 is disposed so that the guide surface 35a contacts the outer plate 25a from the side, the light from the displacement meter 30 may be irradiated to the upward end surface of the outer plate 25 b.

Fig. 7 is a diagram showing an example in which the support device 34 is moved leftward along the rail 33 from the state shown in fig. 5. The position of the guide member 36 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 36a coincides with the distance (interval) between the two link plates, as in the guide member 35. 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 this case, when the guide member 36 is arranged such that the guide surface 36a contacts the inner plate 22b from the side, the light from the displacement meter 30 held by the holding member 37 is irradiated from above to the upward end surface of the inner plate 22 a.

In the example shown in the present 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 view corresponding to section A-A of fig. 5. Fig. 8 shows an example in which the drive chain 10 moves in the direction B from the state shown in fig. 6. For example, as shown in fig. 5 and 6, when the guide member 35 contacts the inner plate 22a from the outside, the guide member 35 contacts the outer plate 25a when the drive chain 10 is moved.

In the example shown in the present embodiment, the guide member 35 is provided on the support arm 43 so as to be displaceable about the pin 44. Therefore, when the drive chain 10 moves so that the guide member 35 contacts the outer plate 25a, the guide member 35 rotates about the pin 44. In the example shown in the present embodiment, after the position adjustment of the displacement meter 30 is completed, it is not necessary to move the guide member 35 or detach the guide member 35 from the support arm 43 so that the detection is not hindered by the guide member 35. Therefore, the operation of detecting the elongation of the drive chain 10 can be easily performed.

Hereinafter, other functions that can be adopted by the detection device 32 will be described. The detection device 32 may use a plurality of functions described below in combination, if applicable.

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, light from the displacement meter 30 is irradiated to the upward end face of the inner plate 22 b. Therefore, if the end surface of the inner plate 22b is stained, the elongation of the drive chain 10 cannot be accurately detected.

When the detection device 32 includes a cleaning member, the inspector attaches the cleaning member to the holding member 37 before detecting the cleaning member by the displacement meter 30. Then, the drive chain 10 is moved in a state where the cleaning member is attached to the holding member 37. This allows the end surface of the inner plate 22b to be cleaned by the cleaning member. When the cleaning of the cleaning member is completed, 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 view showing another example of the supporting device 34. In the example shown in fig. 9, a through hole 42a through which the adjustment bolt 48 passes is formed in the slider 42. The adjusting bolt 48 passes through the through hole 42a and protrudes above the slider 42. In the case of the example shown in fig. 8, the maintenance person can easily perform the operation of the adjusting bolt 48. In particular, when cleaning is performed by the cleaning member, the cleaning member needs to be gently brought into contact with the end surface of the inner plate 22 b. In the example shown in fig. 8, the cleaning member can be easily moved up and down.

Fig. 10 is a view showing another example of the supporting device 34. Fig. 10 corresponds to section A-A of fig. 5. The example shown in fig. 10 is different from the examples shown in fig. 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 disposed so as to face the side surface of the rail 33.

The displacement member 50 is supported by the guide member 49. The displacement member 50 can be displaced up and down with respect to the guide member 49. The support arms 43 and 45 are provided to the displacement member 50, and extend downward from the displacement member 50. That is, the upper end portion 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. Accordingly, 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, the guide member 36, and the holding member 37 can be easily adjusted.

Fig. 11 is a diagram showing another example of the detection device 32. Fig. 11 corresponds to section A-A of fig. 5. In the example shown in fig. 11, the slider 42 is disposed so as to face the upper surface of the rail 33. The width of the slider 42 is greater than the width of the track 33. Therefore, the slider 42 is disposed so as to protrude to both sides of the rail 33.

The support arms 43 and 45 are disposed on one side of the rail 33 in the same manner as the example shown in fig. 5 and 6. The support arms 43 and 45 extend downward from the rail 33, respectively.

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. The support arms 51 and 52 are arranged on the other side of the track 33. The support arms 51 and 52 extend downward from the rail 33, respectively. The rail 33 is disposed so as to pass between the support arm 43 and the support arm 51. The rail 33 is disposed so as to pass between the support arm 45 and the support arm 52.

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

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

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

Fig. 13 is a view showing another example of the guide member 35. The guide member 35 shown in fig. 13 has a portion covering the link plates of the chain from above. A guide surface 35a and a guide surface 35b are formed in the portion of the guide member 35. In the example shown in fig. 13, it is possible to easily confirm that the guide surface 35a is disposed at an appropriate position with respect to the link plate.

In the present embodiment, an example in which the end face of the drive chain 10 is irradiated with light from the displacement meter 30 will be 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 surface of another chain provided in the escalator. The detection device 32 may be used when the end face of the chain provided in a device other than the escalator is irradiated with light from the displacement meter 30.

Industrial applicability

The detection device of the present disclosure can be used when light from a displacement meter is irradiated onto an end surface of a chain.

Description of the reference numerals

1: truss, 2: steps, 3: landing entrance, 4: machine room, 5: 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: grab chain, 17: driving device, 18: moving armrests, 20: inner links, 21: outer links, 22 a-22 b: inner plates, 23a to 23b: bushings, 24 a-24 b: rollers, 25 a-25 b: outer plates 26a to 26b: pin, 30: displacement meter, 31: signal processing device, 32: detection device, 33: track, 34: support means, 35: guide member, 35a: guide surfaces, 35b: guide surfaces, 36: guide member, 36a: guide surface, 37: holding member, 40: bolts, 41: fixed body, 42: slider, 42a: through-hole, 43: support arms, 43a: step portion, 44: pin, 45: support arm, 45a: step portion, 46: pin, 47: base, 47a: screw hole, 48: adjusting bolt, 49: guide member, 50: a displacement member.

Claims

1. A detection device is provided with:

a track configured to traverse over the chain along a first axis;

a support device supported by the rail and configured to move along the first axis by being guided by the rail;

a first guide member formed with a first guide surface and moving along the first axis together with the supporting means; and

a holding member that moves along the first axis together with the supporting means,

when the first guide member is arranged so that the first guide surface contacts the first link plate of the chain from the side, light from the displacement meter held by the holding member is irradiated to the end surface of the second link plate of the chain.

2. The detecting device according to claim 1, wherein,

the support device is provided with:

a slider guided by the rail; and

a support arm extending downward from the slider,

the first guide member is provided to the support arm.

3. The detecting device according to claim 2, wherein,

the support device is further provided with a pin arranged along the first axis,

the first guide member is provided to the support arm so as to be displaceable about the pin.

4. The detecting device according to claim 2 or 3, wherein,

the slider is provided with:

a guide member in contact with the rail; and

a first displacement member supported by the guide member and capable of being displaced up and down with respect to the guide member,

the support arm is disposed on the first displacement member.

5. The detecting device according to claim 4, wherein,

the first guide member is formed with a second guide surface that contacts the first link plate, which is contacted by the first guide surface from the side, from above.

6. The apparatus for detection according to any one of claims 2 to 5, wherein,

the support device further comprises:

a base provided to the support arm; and

a second displacement member supported by the base and capable of being displaced up and down with respect to the base,

the holding member is provided to the second displacement member.

7. The apparatus for detection according to any one of claims 1 to 6, wherein,

the detection device further includes a second guide member having a third guide surface formed so as to face the first guide surface and movable along the first axis together with the support device,

when the second guide member is arranged so that the third guide surface contacts the second link plate from the side, light from the displacement meter held by the holding member is irradiated to the end surface of the first link plate.

8. The apparatus for detection according to any one of claims 1 to 7, wherein,

the detection device further includes a cleaning member that is detachable from the holding member.