CN117580796A

CN117580796A - Suspension tool of escalator

Info

Publication number: CN117580796A
Application number: CN202180100239.4A
Authority: CN
Inventors: 大岛龙平; 野泽昌宏; 高桥健太
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: KR20240019830A; JPWO2023281592A1; WO2023281592A1

Abstract

Provided is a suspension tool for an escalator, which can place components of the escalator on steps and can be easily installed. The suspension tool of the escalator is provided with: a pair of fixing members respectively mounted to a pair of handrails of the escalator; the rod part, the end of its both sides is fixed to a pair of fixed parts separately; a belt that fastens the step shaft and the rod member; a hanger provided at a central portion of the rod member so as to be rotatable about a longitudinal direction of the rod member; a chain body suspending a part of the escalator; and a traction body suspended from the hanger, the traction body being configured to wind up the chain body at a first position vertically above the member, thereby lifting the member upward from the installation place, the traction body being pulled by an upper end of the chain body when a lower end of the chain body and the lifted member are located vertically above a step on which the member is placed, whereby the hanger is rotated about a longitudinal direction of the rod member, and the traction body being movable from the first position to the second position.

Description

Suspension tool of escalator

Technical Field

The present disclosure relates to a suspension tool for an escalator.

Background

Patent document 1 discloses a suspension tool for replacement of a component of an escalator. According to the suspension tool, the component of the escalator can be placed on the steps of the escalator after being lifted from the opening.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2020-179977

Disclosure of Invention

Problems to be solved by the invention

However, the suspension tool described in patent document 1 is attached to a plurality of steps across the opening. Therefore, the suspension tool becomes large in size and cannot be easily set.

The present disclosure has been made to solve the above-described problems. An object of the present disclosure is to provide a suspension tool of an escalator, which can place components of the escalator on steps and can be easily installed.

Means for solving the problems

The suspension tool of the escalator of the present disclosure comprises: a pair of fixing members respectively mounted to a pair of handrails of the escalator; a rod member formed in a rod shape, the end portions of both sides being fixed to the pair of fixing members, respectively; a belt that fastens a step shaft to which steps are mounted, the steps being ridden by passengers of the escalator, to the rod member; a hanger provided at a central portion of the rod member so as to be rotatable about a longitudinal direction of the rod member; a chain body suspending a component of the escalator; and a traction body suspended from the suspension member, wherein an upper end of the chain body is attached to the traction body, the traction body is configured to wind up the chain body at a first position vertically above the component, thereby lifting the component upward from an installation place, and when a lower end of the chain body and the lifted component are located vertically above a step on which the component is placed, the traction body is pulled by an upper end of the chain body, so that the suspension member rotates about a longitudinal direction of the rod component, thereby enabling the traction body to move from the first position to a second position.

Effects of the invention

According to the present disclosure, in a suspension tool of an escalator, a lifting device is provided to be movable between a first position to lift a component and a second position to place the component on a placement step. Therefore, the components of the escalator can be placed on the steps, and the suspending tool can be easily installed.

Drawings

Fig. 1 is a schematic view of the whole escalator to which the suspension of the escalator of embodiment 1 is applied.

Fig. 2 is a view of a main part of an escalator to which a suspension of the escalator of embodiment 1 is applied, as viewed from a lower part of a moving path.

Fig. 3 is a perspective view of a main part of a suspension of the escalator of embodiment 1.

Fig. 4 is a plan view of a main part of a suspension of the escalator of embodiment 1.

Fig. 5 is a view showing a hanger of a suspension of the escalator of embodiment 1.

Fig. 6 is a perspective view of a work table of the escalator of embodiment 1.

Fig. 7 is a side view of the work table of the escalator of embodiment 1.

Fig. 8 is a view of the work table of the escalator of embodiment 1 as seen from the installation surface side.

Fig. 9 is a view of the work table of the escalator of embodiment 1 as seen from the mounting surface side.

Fig. 10 is a view showing a main part of a mounting surface of a work table of an escalator of embodiment 1.

Fig. 11 is a view of the work table of the escalator of embodiment 1 viewed in the longitudinal direction.

Fig. 12 is a diagram showing a main part of a work table of an escalator of embodiment 1.

Fig. 13 is a view showing a state in which the leg portion of the work table of the escalator of embodiment 1 is removed.

Fig. 14 is a diagram showing a process of attaching a hanger of a suspension of the escalator of embodiment 1.

Fig. 15 is a view showing a rod member to which a hanger of a suspension of the escalator of embodiment 1 is attached.

Fig. 16 is a diagram showing a process of attaching a fixing member of a suspension of the escalator of embodiment 1.

Fig. 17 is a view showing a right side fixing member of a suspension of the escalator of embodiment 1.

Fig. 18 is a view showing a left side fixing member of a suspension of the escalator of embodiment 1.

Fig. 19 is a view showing a state in which a rod member of a suspension of the escalator of embodiment 1 is fixed to a handrail.

Fig. 20 is a diagram showing a main part of a suspension of the escalator of embodiment 1.

Fig. 21 is a diagram showing a state of a belt to which a suspension of the escalator of embodiment 1 is attached.

Fig. 22 is a view showing a main part of the other end side of the belt of the suspension of the escalator of embodiment 1.

Fig. 23 is a view showing a main part of one end side of a belt of a suspension of an escalator of embodiment 1.

Fig. 24 is a diagram showing a state of a hoisting device to which a suspension of the escalator of embodiment 1 is attached.

Fig. 25 is a diagram showing a main part of a hoisting device of a suspension of the escalator of embodiment 1.

Fig. 26 is a diagram showing a main part of a hoisting device of a suspension of the escalator of embodiment 1.

Fig. 27 is a side view showing a state in which a work table of the escalator of embodiment 1 is provided.

Fig. 28 is a diagram showing a main part of a drive unit suspended by a suspension of the escalator of embodiment 1.

Fig. 29 is a diagram of a lifting device of a suspension of the escalator of embodiment 1 as viewed from above.

Fig. 30 is a diagram of a lifting device of a suspension of the escalator of embodiment 1, as viewed from above.

Fig. 31 is a diagram showing components of a drive unit placed on a work table of the escalator of embodiment 1.

Detailed Description

The manner in which the present disclosure is practiced is illustrated in the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated description of this portion is appropriately simplified or omitted.

Embodiment 1.

As shown in fig. 1, the escalator 1 is disposed between an upper floor and a lower floor of a building. The passengers move between the upper and lower floors through the moving path 2 of the escalator 1.

A pair of balustrades 3 are provided on both sides of the travel path 2. Fig. 1 shows one of the pair of balustrades 3. The pair of armrests 4 are endless belts, respectively. A pair of handrails 4 are provided on the outer peripheries of the pair of balustrades 3, respectively. A plurality of step shafts 5 are provided at the lower portion of the movement path 2. The plurality of steps 6 are mounted on the plurality of step shafts 5, respectively. In normal operation, a passenger rides on the plurality of steps 6 and moves along the movement path 2.

The drive unit 7 of the escalator 1 is arranged below the moving path 2. The opening 8 is formed in the lower portion of the movement path 2 by removing several steps 6 during maintenance work. Fig. 1 shows a state in which three upper steps 6a among the plurality of steps 6 are removed. In this state, the driving unit 7 is exposed through the opening 8.

The suspending means 9 is provided above the opening 8 in the escalator 1. The suspension tool 9 includes a pair of fixing members 10, a rod member 11, a belt 12, and a hoisting device 13.

The pair of fixing members 10 are fixed to the pair of armrests 4, respectively.

For example, the rod member 11 is a single tube made of metal. The length direction dimension of the rod member 11 is determined according to the width dimension of the pair of armrests 4. The two ends of the rod member 11 are respectively erected on both sides of the pair of armrests 4. Both ends of the rod member 11 are fixed to a pair of fixing members 10, respectively.

For example, the strap 12 is a ligature strap. The strap 12 secures the bar member 11 to one of the plurality of step shafts 5. Specifically, one end of the belt 12 is attached to the central portion of the rod member 11. The other end of the belt 12 is mounted to one of the plurality of step shafts 5. The belt 12 is stretched so as to generate tension between one end and the other end. For example, the belt 12 is stretched so as to be perpendicular to the pair of armrests 4 on a projection plane as viewed from the longitudinal direction of the rod member 11.

The lifting device 13 is a device for lifting an object by a crane. Specifically, for example, the lifting device 13 is a chain block. The hoisting device 13 includes a chain body 13a and a traction body 13b.

For example, the chain body 13a is an endless chain. The lower end of the chain body 13a is provided with a crane.

The traction body 13b is suspended from the rod member 11. The traction body 13b is provided at an upper end of the chain body 13a. The traction body 13b is provided to be able to wind up the chain body 13a. The traction body 13b is provided rotatably about the longitudinal direction of the rod member 11.

The work table 14 is placed on the placement step 6b adjacent to the opening 8 on the lower side of the plurality of steps 6. Specifically, the work table 14 is placed on the placement step 6b adjacent to the upper step 6a located at the lowermost side among the three upper steps 6 a.

In the maintenance work, the operator performs work such as inspection work and component replacement work of the device provided below the movement path 2 through the opening 8. For example, the suspension tool 9 is used when the disc brake 7a, which is a component of the drive unit 7 of the escalator 1, is carried during maintenance work. In the operation of conveying the components of the driving unit 7, the operator performs an opening process, a first setting process, a second setting process, a lifting process, a moving process, and a placing process.

In the opening step, the operator removes the plurality of upper steps 6a to provide the opening 8. Then, in the first setting step, the worker sets the suspension tool 9 to the escalator. Then, in the second setting step, the worker sets the work table 14 on the placement step 6b.

Thereafter, in the lifting process, the worker lifts the component using the lifting device 13. At this time, the traction body 13b is present at a first position a vertically hanging downward from the rod member 11. In this state, the traction body 13b lifts the disc brake 7a of the drive unit 7 by winding up the chain body 13a. The traction body 13b lifts the disc brake 7a to a position higher than the step shaft 5 to which the upper step 6a located at the lowermost side of the 3 upper steps 6a is attached.

Then, in the moving step, the operator pulls the disc brake 7a to rotationally move the disc brake 7a and the crane at the lower end of the chain body 13a in an arc shape with the longitudinal direction of the rod member 11 as the lower side of the axial movement path 2. At this time, the operator rotates and moves the disc brake 7a and the crane vertically above the work table 14. In this state, the traction body 13B exists at the second position B.

Thereafter, in the mounting step, the worker holds the vertical position of the disc brake 7a and extends the chain body 13a extending from the traction body 13b, thereby mounting the disc brake 7a on the work table 14.

After that, for example, the worker performs a replacement operation of the component. In the replacement work, the worker fastens the disk brake 7a placed on the work table 14 and any one of the plurality of step shafts 5 by using the binding band. In this state, the worker performs a replacement operation of the components of the disc brake 7a. After that, the disc brake 7a is again set to the drive unit 7 by being lifted by the lifting device 13. In this case, the replacement work ends.

Next, the suspension tool 9 will be described with reference to fig. 2.

The suspension tool 9 is provided with a first hanger 15 and a second hanger 16.

The first hanger 15 includes a hanger cylindrical portion 15a and a hooking portion 15b. The hanger cylindrical portion 15a of the first hanger 15 passes through the rod portion of the rod member 11. The hooking portion 15b is provided on the outer peripheral side of the pendant cylindrical portion 15 a. The hooking portion 15b has a hole for hooking a hook or the like.

The first hanger 15 is provided on the rod member 11 at the hanger cylindrical portion 15a so as to be movable in the longitudinal direction of the rod member 11. The first hanger 15 is provided at the hanger cylindrical portion 15a so as to be rotatable about the longitudinal direction of the rod member 11.

The traction body 13b of the hoisting device 13 is suspended from the rod member 11 via the first suspension 15. Specifically, the traction body 13b is suspended from the hooking portion 15b. The traction body 13b is provided rotatably from the first position to the second position via the hooking portion 15b about the longitudinal direction of the rod member 11.

The second hanger 16 has the same structure as the first hanger 15. Specifically, the second hanger 16 includes a hanger cylindrical portion 16a and a hooking portion 16b. The number of second hangers 16 is determined according to the number of the bands 12.

One end of the belt 12 is attached to the hooking portion 16b of the second hanger 16. The belt 12 is attached to the rod member 11 via a second hanger 16.

The pair of fixing members 10 have mutually symmetrical shapes in a state of being provided to the armrest 4. The pair of fixing members 10 is constituted by a right fixing member 10R disposed on the right side and a left fixing member 10L disposed on the left side when the upper side is viewed along the moving path 2.

Next, a pair of fixing members 10 will be described with reference to fig. 3 and 4.

Fig. 3 is a perspective view of a main part of a suspension of the escalator of embodiment 1. Fig. 4 is a plan view of a main part of a suspension of the escalator of embodiment 1.

The right side fixing member 10R of the pair of fixing members 10 is shown in fig. 3 and 4.

The right fixing member 10R includes a cylindrical portion 17, a contact surface portion 18, and a guide portion 19.

The cylindrical portion 17 is formed in a cylindrical shape that allows the outer peripheral side of the rod member 11 to pass through the inside. The cylindrical portion 17 fixes the rod member 11 inside by tightening a fixing screw.

The contact surface portion 18 is a planar plate. A cylindrical portion 17 is provided on the upper surface of the contact surface portion 18. The lower surface of the contact surface portion 18 has a rubber sheet. The contact surface portion 18 contacts the upper surface of the armrest 4 at a rubber sheet of the lower surface.

The guide portion 19 extends in an arc shape from the side of the contact surface portion 18. The guide portion 19 is formed to have a curved surface having the same shape as that of the side curved portion of the handrail 4. The guide 19 has a rubber sheet on an inner surface. The guide 19 contacts the side bent portion of the handrail 4 at the rubber piece of the inner surface.

Next, the first hanging member 15 will be described with reference to fig. 5.

As shown in fig. 5, the first hanger 15 is provided on the outer peripheral side of the rod member 11. The first hanger 15 has a set screw 20. The first hanger 15 can be fixed to the rod member 11 by tightening the fixing screw 20.

Next, the table 14 will be described with reference to fig. 6.

Fig. 6 is a perspective view of a work table of the escalator of embodiment 1.

As shown in fig. 6, the work table 14 includes a main plate 21.

The main plate 21 is formed in a plate shape. For example, the length of the long side of the main plate 21 is longer than the length of the steps 6 in the direction of the moving path 2. The main plate 21 has a mounting surface 21a and a mounting surface 21b facing in a direction opposite to the mounting surface 21a.

The main plate 21 is placed on the upper surface of the placement step 6b. In this state, the placement surface 21a faces upward. The installation surface 21b contacts the upper surface of the placement step 6b. Both ends of the main plate 21 in the longitudinal direction extend from the mounting steps 6b. Specifically, one end of the main plate 21 in the longitudinal direction protrudes toward the opening 8 side from the end of the placement step 6b on the opening 8 side. The other end of the main plate 21 in the longitudinal direction protrudes to the opposite side of the opening 8 than the end of the placement step 6b opposite to the opening 8.

Next, the structure of the work table 14 will be described with reference to fig. 7 and 8.

Fig. 7 is a side view of the work table of the escalator of embodiment 1. Fig. 8 is a view of the work table of the escalator of embodiment 1 as seen from the installation surface side.

As shown in fig. 7 (a), the work table 14 further includes two first protrusions 22, two second protrusions 23, two legs 24, a pair of first frames 25, a pair of second frames 26, and a pair of support bars 27. The side of leg 24 is shown in fig. 7 (B).

Fig. 7 (a) shows one of the two first protrusions 22. The two first protrusions 22 extend perpendicularly from the installation surface 21b at one end of the installation surface 21b of the main plate 21, respectively.

Fig. 7 (a) shows one of the two second protrusions 23. The two second protrusions 23 extend perpendicularly from the installation surface 21b at the other end portions of the installation surface 21b of the main plate 21, respectively.

The two legs 24 each have the same structure. Fig. 7 (a) shows one of the two legs 24. The legs 24 are provided so as to be telescopic in the axial direction. A plate-shaped mounting portion 24a is provided at one axial end of the leg 24. One axial end of the leg 24 is detachably attached to a surface of the second protrusion 23 facing in the same direction as the installation surface 21b via an attachment portion 24a. A rubber plate perpendicular to the axial direction is provided at the other end of the leg 24 in the axial direction.

The pair of first frames 25 are each formed in a square bar shape. The pair of first frames 25 are provided on the mounting surface 21a of the main board 21. Specifically, the pair of first frames 25 are arranged in parallel with each other at a distance from each other.

The pair of second frames 26 are each formed in a square bar shape. Fig. 7 (a) shows one of the pair of second housings 26. The pair of second frames 26 are disposed from one to the other of the pair of first frames 25. The pair of second frames 26 are detachably attached to the surfaces of the pair of first frames 25 opposite to the surface contacting the placement surface 21a. The pair of second frames 26 form a gap with the mounting surface 21a.

The pair of support bars 27 are formed in a square bar shape. The pair of support bars 27 are disposed between the pair of first frames 25.

As shown in fig. 8, at one end of the installation surface 21b, two first protrusions 22 are provided on both sides of the central portion of the installation surface 21b. At the other end of the installation surface 21b, two second protrusions 23 are provided on both sides of the central portion of the installation surface 21b, respectively.

The work table 14 further includes a handle groove 28, a mounting piece 29, and two leg attachment members 30.

The handle groove 28 is provided on the installation surface 21b between the first protrusion 22 and the second protrusion 23.

For example, the mounting sheet 29 is a sheet-like sponge rubber. The mounting piece 29 is adhered to the mounting surface 21b between the first protrusion 22 and the second protrusion 23. The mounting piece 29 is provided so as not to cover the handle groove 28.

The two leg attachment members 30 are loading and unloading platforms corresponding to the two legs 24 not shown in fig. 8, respectively. The two leg mounting members 30 are provided to the two second protrusions 23, respectively. The leg attachment member 30 includes a receiving portion 30a.

The receiving portions 30a are provided on the surface of the corresponding second protrusion 23 opposite to the surface in contact with the installation surface 21b. The receiving portion 30a has a space therein. The receiving portion 30a is provided as a space capable of accommodating therein the attachment portion 24a of the leg 24, which is not shown in fig. 8.

Next, the first housing 25, the second housing 26, and the support bar 27 will be described with reference to fig. 9 and 10.

Fig. 9 is a view of the work table of the escalator of embodiment 1 as seen from the mounting surface side. Fig. 10 is a view showing a main part of a mounting surface of a work table of an escalator of embodiment 1.

As shown in fig. 9, one of the pair of first frames 25 is fixed to one end portion of the main plate 21 in the longitudinal direction on the mounting surface 21a. One end of the pair of first frames 25 is aligned with a short side of the main board 21 perpendicular to the long side. The other of the pair of first frames 25 is fixed at a position apart from one of the pair of first frames 25 by the length of the long side of the second frame 26.

A plurality of adjustment holes 25a are provided in each of the pair of first frames 25. The plurality of adjustment holes 25a are provided in a predetermined number at both ends of the first housing 25, respectively. For example, six adjustment holes 25a are provided in one of the pair of first frames 25. In this case, three adjustment holes 25a among the six adjustment holes 25a are provided at one end portion of the first frame 25. The other three adjustment holes 25a among the six adjustment holes 25a are provided at the other end portion of the first frame 25.

The pair of second frames 26 are arranged so as to be perpendicular to the pair of first frames 25 on the projection surface projected onto the mounting surface 21a. Both ends of each of the pair of second frames 26 are fixed to the pair of first frames 25, respectively. The pair of second frames 26 are fixed to the pair of first frames 25 by bolts through the corresponding adjustment holes 25a. The interval between the pair of second frames 26 varies depending on which adjustment hole 25a is fixed.

A pair of support bars 27 are disposed in parallel with each other at a distance from each other. For example, the pair of support bars 27 are provided in parallel with the pair of first frames 25, respectively.

Fig. 10 shows a part of the plurality of adjustment holes 25a provided in one of the pair of first frames 25. The intervals of the plurality of adjustment holes 25a are determined according to the sizes of components taken out from the driving unit 7 not shown in fig. 10. The adjustment holes 25a to which the pair of second frames 26 are fixed are determined according to the size of the member.

Next, the leg 24 will be described with reference to fig. 11 to 13.

Fig. 11 is a view of the work table of the escalator of embodiment 1 as viewed in the longitudinal direction. Fig. 12 is a diagram showing a main part of a work table of an escalator of embodiment 1. Fig. 13 is a view showing a state in which a leg portion of a work table of the escalator of embodiment 1 is removed.

As shown in fig. 11, the two leg attachment members 30 are further provided with fixing portions 30b, respectively.

The fixing portion 30b is provided on the outer surface of the corresponding second protrusion 23 in the longitudinal direction of the main plate 21. The fixing portion 30b has a spring therein, not shown. The fixing portion 30b has a protruding portion 30c. The protruding portion 30c is provided so as to be movable between a protruding position protruding in the direction of the receiving portion 30a and a storage position stored in the inside of the fixing portion 30b. For example, the protruding portion 30c is held at the protruding position by the elastic force of a spring provided inside the fixing portion 30b. Fig. 11 shows the protruding portion 30c existing at the protruding position. In a state where the protruding portion 30c is present at the protruding position, the fixing portion 30b fixes the mounting portion 24a housed in the receiving portion 30a inside the receiving portion 30a.

Fig. 12 shows a state in which the attachment portion 24a of the leg 24 is accommodated in the receiving portion 30a. In this state, the protruding portion 30c is held in the protruding position.

The worker moves the protruding portion 30c from the protruding position to the storage position by applying a force against the spring of the fixing portion 30b. When the protruding portion 30c is present at the storage position, the worker can detach the attachment portion 24a from the inside of the receiving portion 30a.

Fig. 13 shows two legs 24 detached from the leg attachment member 30. For example, the leg 24 is transported and stored in a state of being detached from the leg attachment member 30.

Next, with reference to fig. 14 to 18, a process at an initial stage of the process of setting the suspension tool 9 will be described.

Fig. 14 is a diagram showing a process of attaching a hanger of a suspension of the escalator of embodiment 1. Fig. 15 is a view showing a rod member to which a hanger of a suspension of the escalator of embodiment 1 is attached. Fig. 16 is a diagram showing a process of attaching a fixing member of a suspension of the escalator of embodiment 1. Fig. 17 is a view showing a right side fixing member of a suspension of the escalator of embodiment 1. Fig. 18 is a view showing a left side fixing member of a suspension of the escalator of embodiment 1.

In the first setting step of setting the suspending tool 9, first, the worker performs a step of passing the first hanger 15, the second hanger 16, and the pair of fixing members 10 through the rod member 11, respectively.

As shown in fig. 14, in the first hanger 15, a hanger cylindrical portion 15a passes through the rod member 11. Although not shown in fig. 14, in the second hanger 16, the hanger cylindrical portion 16a passes through the rod member 11.

Fig. 15 shows one first hanger 15 and two second hangers 16. The first hanger 15 is disposed between 2 second hangers 16 in the longitudinal direction of the rod member 11.

Fig. 16 shows a process of passing the fixing member 10 through the rod member 11. After the second hanger 16 and the first hanger 15, which is not shown in fig. 16, pass through the rod member 11, the fixing member 10 is passed through the rod member. At this time, in each of the fixing members 10 of the pair of fixing members 10, the cylindrical portion 17 passes through the rod member 11. Fig. 17 shows the right side fixing member 10R passing through the rod member 11. Fig. 18 shows the left side fixing member 10L passing through the rod member 11.

Next, a process of installing the suspending tool 9 in the escalator 1 will be described with reference to fig. 19 to 26.

Fig. 19 is a view showing a state in which a rod member of a suspension of the escalator of embodiment 1 is fixed to a handrail. Fig. 20 is a diagram showing a main part of a suspension of the escalator of embodiment 1. Fig. 21 is a diagram showing a state of a belt to which a suspension of the escalator of embodiment 1 is attached. Fig. 22 is a view showing a main part of the other end side of the belt of the suspension of the escalator of embodiment 1. Fig. 23 is a view showing a main part of one end side of a belt of a suspension of an escalator of embodiment 1. Fig. 24 is a diagram showing a state of a hoisting device to which a suspension of the escalator of embodiment 1 is attached. Fig. 25 is a diagram showing a main part of a hoisting device of a suspension of the escalator of embodiment 1. Fig. 26 is a diagram showing a main part of a hoisting device of a suspension of the escalator of embodiment 1.

As shown in fig. 19, the pair of fixing members 10 are attached to the pair of armrests 4 after passing through the rod member 11. At this time, the position of the rod member 11 is adjusted to a position vertically above the member as the lifting target.

Fig. 20 shows the right side fixing member 10R attached to the armrest 4. The right fixing member 10R is attached to the armrest 4 from the side while passing through the rod member 11. The right fixing member 10R is fastened to the fixing screw in a state of being attached to the armrest 4.

The left fixing member 10L is attached to the armrest 4 in the same manner as the right fixing member 10R, though not shown. The left fixing member 10L is fastened to the armrest 4 by a fixing screw.

Thereafter, as shown in fig. 21, the rod member 11 is fastened to the step shaft 5 from the center portion to the right and left by two straps 12. At this time, the pair of fixing members 10 are pressed against the pair of armrests 4 by the tension of the belt 12. Therefore, the maximum static friction between the fixing member 10 and the armrest 4 becomes large.

Fig. 22 shows the mounting portion of the right belt 12 and the step shaft 5. The other end of the belt 12 is wound around the step shaft 5. Fig. 23 shows the mounting portion of the right belt 12 and the rod member 11. For example, one end of the belt 12 is attached to the hooking portion 16b of the second hanger 16 via an S-hook. In this state, by pulling the end portion 12a of the belt 12, tension is generated between one end and the other end of the belt 12.

After that, as shown in fig. 24, the worker performs an operation of attaching the hoisting device 13 to the first hanger 15. For example, the traction body 13b is hung on the hanging portion 15b of the first hanger 15 via a hook. The chain body 13a is suspended below the traction body 13b. As shown in fig. 25 and 26, the lifting device 13 is attached to be movable in the longitudinal direction of the rod member 11 via the first hanger 15.

Next, the installation state of the work table 14 will be described with reference to fig. 27.

As shown in fig. 27, the main plate 21 of the work table 14 is provided on the placement step 6b. In the main plate 21, the mounting piece 29 is in contact with the upper surface of the mounting step 6b. The first protrusion 22 is located closer to the opening 8 than the placement step 6b. The second protrusion 23 protrudes on the opposite side of the mounting step 6b from the opening 8. That is, the second protrusion 23 protrudes from the first protrusion 22 on the opposite side of the upper surface of the placement step 6b.

In a state where the work table 14 is provided on the placement step 6b, the movement of the main plate 21 in the opening direction with respect to the placement step 6b is restricted by the first protrusion 22 and the second protrusion 23.

The lower end of the leg 24 is placed on the upper surface of the step 6 one step below the placement step 6b. At this time, the length of the leg 24 in the longitudinal direction is determined as the length of the leg 24 capable of supporting the load on the second protrusion 23 side of the main plate 21.

Next, a lifting process and a moving process by the suspension tool 9 will be described with reference to fig. 28 to 30.

Fig. 28 is a diagram showing a main part of a drive unit suspended by a suspension of the escalator of embodiment 1. Fig. 29 is a diagram of a lifting device of a suspension of the escalator of embodiment 1 as viewed from above. Fig. 30 is a diagram of a lifting device of a suspension of the escalator of embodiment 1, as viewed from above.

Fig. 28 shows a disc brake 7a of the drive unit 7. In the lifting process, an eye bolt is attached to the disc brake 7a. In a state where the traction body 13b, not shown in fig. 28, is present at the first position, the crane of the chain body 13a is hung on the eye bolt.

As shown in fig. 29 and 30, in the hoisting step, the traction body 13b is moved in the longitudinal direction of the rod member 11. At this time, the disc brake 7a lifted by the traction body 13b moves in the longitudinal direction of the rod member 11 following the chain body 13a. The disc brake 7a is moved to a position where it can be lifted by moving in the longitudinal direction of the rod member 11.

Thereafter, the chain body 13a and the traction body 13b lift the disc brake 7a to a position higher than the placement step 6b, which is not shown in fig. 30.

After that, a moving step is performed. In the moving step, the worker pulls the disc brake 7a toward the lower side of the incline of the escalator 1, that is, toward the side where the steps 6b are placed, using a hook bar or the like. The operator moves the disc brake 7a to above a work table 14, not shown in fig. 30, provided on the placement step 6b. The lower end of the chain body 13a moves together with the disc brake 7a to above the table 14. At this time, the chain body 13a pulls the traction body 13b to the lower side of the incline of the escalator 1. In this case, the traction body 13b is rotationally moved from the first position to the second position about the rod member 11.

Next, the mounting step will be described with reference to fig. 31.

After the moving step, a placing step is performed. In the loading step, the operator operates the hoisting device 13 while holding the disc brake 7a above the table 14, and lowers the disc brake 7a. Specifically, at this time, the operator performs an operation of extending the crane portion of the hoisting device 13.

Thereafter, as shown in fig. 31, the disc brake 7a is placed on the table 14. At this time, the disc brake 7a is placed inside a square frame formed by a pair of first frames 25 and a pair of second frames 26.

When the disc brake 7a is placed on the table 14, a force may be generated from the disc brake 7a to the table 14 toward the opening 8. The second protruding body 23, not shown in fig. 31, is caught by the placement step 6b, and thereby the movement of the work table 14 in the direction of the opening 8 is suppressed by the force.

Although not shown, the repair work of the disc brake 7a may be performed later. At this time, in order to stabilize the disc brake 7a, the step shaft 5 and the disc brake 7a may be fixed by a tie-down belt. Specifically, the binding band attached to the step shaft 5 is fixed to the disc brake 7a through a space formed by the second frame 26, the pair of first frames 25, and the mounting surface 21a.

According to embodiment 1 described above, the suspension tool 9 includes a pair of fixing members 10, a rod member 11, a belt 12, a first hanger 15, and a lifting device 13. The hoisting device 13 includes a chain body 13a and a traction body 13b. The traction body 13b is provided so as to be movable between a first position and a second position about the longitudinal direction of the rod member 11. Therefore, the suspension tool 9 can safely mount the component on the mounting step 6b. The suspension tool 9 is composed of a simple member. Therefore, the suspension tool 9 can be easily transported and set. As a result, the suspension tool 9 can mount the components on the mounting step 6b, and can be easily installed. In addition, the worker can perform the replacement work of the components in the moving path 2 of the escalator 1.

The work table 14 includes a main plate 21, a first protrusion 22, and a second protrusion 23. In a state where the work table 14 is provided on the placement step 6b, the first protrusion 22 and the second protrusion 23 protrude downward from the main plate 21. Particularly, when the component of the escalator 1 is placed on the work table 14, a force is generated to pull the component from the lifting device 13 toward the opening 8. At this time, a frictional force is applied to the table 14 in the direction from the member toward the opening 8. The second protrusion 23 suppresses the movement of the table 14 in the direction of the opening 8. That is, the work table 14 is stably provided on the placement step 6b. Therefore, the escalator components can be safely mounted on the work table 14. Further, since the components are mounted on the work table 14, the steps can be prevented from being broken by the components.

Further, the work table 14 includes legs 24. When a downward load is applied to the mounting surface 6a of the main plate 21 from the mounting step 6b to a portion protruding toward the opposite side of the opening 8, the leg 24 supports the load. Therefore, when this load is applied, the leg 24 can restrain the main plate 21 from rotating about the contact point where the main plate 21 contacts the end portion of the mounting step 6b opposite to the opening 8. As a result, the work table 14 can be set in the stable state on the placement step 6b.

In addition, the leg 24 is stretchable in a direction extending from the second protrusion 23. Thus, the legs 24 may be provided according to the height between steps.

In addition, the leg 24 is provided to be detachable from the second protrusion 23. The leg 24 is removed during transportation of the table 14, storage of the table 14, and the like. Therefore, the table 14 can be easily transported. In addition, the space for storing the table 14 can be reduced.

The work table 14 includes a pair of first frames 25 and a pair of second frames 26. The side of the member placed on the table 14 is supported by at least one of the pair of first frames 25 and the pair of second frames 26. Therefore, the work table 14 can suppress the mounted components from falling over. As a result, the components can be placed on the work table 14 in a stable state.

The positions of the pair of second frames 26 in the longitudinal direction can be adjusted by the plurality of adjustment holes 25a. Therefore, the interval between the pair of second frames 26 can be adjusted according to the members.

The pair of second frames 26 is provided so as to form a gap with the mounting surface 21a. For example, in the case of performing a repair operation of a component mounted on the work table 14, the component can be fastened to the step shaft 5 through the gap. As a result, the repair work can be safely performed. In addition, the operation of conveying the components to the lower portion of the escalator can be omitted.

The method for replacing the escalator component includes a first setting step, a second setting step, a lifting step, a moving step, and a mounting step. Therefore, the component can be placed on the placement step 6b using the suspension tool 9. In addition, the suspension tool 9 can be easily provided.

After the mounting step in the component replacement method, the component mounted on the work table 14 may be lowered to the lower layer where the escalator 1 is caught. In this case, a component replacement operation for the component may be performed in a lower layer.

In addition, in the case where the member of the escalator 1 to be transported is cylindrical, the member may be placed on the work table 14 so that the pair of support bars 27 are in contact with the circumference of the member. In this case, the support bar 27 suppresses rolling movement of the member.

Further, the parts of the escalator 1 to be carried are not limited to the disc brake 7a. For example, the suspension tool 9 may also carry the motor of the drive unit 7. In this case, the replacement of the pulley of the motor may be performed on the table 14.

Industrial applicability

As described above, the suspension tool 9, the work table 14, and the component replacement method of the present disclosure can be used for maintenance work of the escalator 1.

Description of the reference numerals

1: escalator, 2: moving path, 3: railing, 4: armrests, 5: step shaft, 6a: mounting surface, 7: drive unit, 7a: disc brake, 8: opening portion, 9: tool, 10: fixing member, 10L: left side fixing member, 10R: right side fixing member, 11: rod member, 12: band, 12a: end, 13: hoisting device, 13a: chain body, 13b: traction body, 14: work table, 15: first pendant, 15a: pendant cylindrical portion, 15b: hook portion, 16: second pendant, 16a: pendant cylindrical portion, 16b: hook part, 17: cylindrical portion, 18: contact face portion, 19: guide part, 20: set screw, 21: motherboard, 21a: mounting surface, 21b: setting face, 22: first protrusions, 23: second protrusions, 24: legs, 24a: mounting portion, 25: first frame, 25a: adjustment holes, 26: second frame, 27: rod, 28: handle groove, 29: mounting sheet, 30: leg attachment member, 30a: receiving portion, 30b: fixing portion, 30c: a protruding part.

Claims

1. An escalator suspension tool, comprising:

a pair of fixing members respectively mounted to a pair of handrails of the escalator;

a rod member formed in a rod shape, the end portions of both sides being fixed to the pair of fixing members, respectively;

a belt that fastens a step shaft to which steps are mounted, the steps being ridden by passengers of the escalator, to the rod member;

a hanger provided at a central portion of the rod member so as to be rotatable about a longitudinal direction of the rod member;

a chain body suspending a component of the escalator; and

and a traction body suspended from the hanging piece, wherein an upper end of the chain body is attached to the traction body, the traction body is configured to wind up the chain body at a first position vertically above the component, thereby lifting the component upward from an installation place, and when a lower end of the chain body and the lifted component are located vertically above a step on which the component is placed, the traction body is pulled by the upper end of the chain body, so that the hanging piece rotates about a longitudinal direction of the rod component, thereby enabling the traction body to move from the first position to a second position.