Auxiliary tool for replacing elevator control equipment and replacement method

Abstract

A replacement auxiliary tool and replacement method are provided to further improve the workability of replacing elevator control equipment. The replacement auxiliary tool (26) is used for replacing the control equipment (13) of the elevator (1). The mounting stand (12) forms an edge of a first opening (14) that opens vertically below the mounting surface (15) of the control equipment (13). The front-to-back length of the closing plate (27) of the replacement auxiliary tool (26) is longer than the front-to-back length of the first opening (14). The closing plate (27) is mounted between the front edge and the rear edge of the first opening (14) at a position lower than the control equipment (13).

Description

Technical Field

[0001] This disclosure relates to auxiliary tools and methods for replacing elevator control equipment. Background Technology

[0002] Patent document 1 discloses an example of an electromagnetic contactor for an elevator. The electromagnetic contactor is mounted on a vertical plane. In the electromagnetic contactor, leads are led out from the lower surface.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2001-310880 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] In elevator control equipment such as electromagnetic contactors described in Patent Document 1, other equipment, such as leads extending from the lower surface, is sometimes positioned below the control equipment. In this case, an opening is provided below the control equipment mounted on the vertical plane, allowing the leads or other wiring to pass through. When replacing such control equipment with a new one, the operator must perform the replacement work above the opening. Therefore, the workability of the replacement work is sometimes poor.

[0008] This disclosure relates to a solution to such a problem. This disclosure provides replacement auxiliary tools and methods that can further improve the workability of replacing elevator control equipment.

[0009] Methods for solving problems

[0010] The replacement auxiliary tool disclosed herein is a replacement auxiliary tool for elevator control equipment. The elevator control equipment is mounted on the front side of a mounting surface in a mounting bracket. The mounting bracket includes a mounting surface that is parallel to the vertical and horizontal directions and perpendicular to the front-back direction, and forms an edge below the mounting surface that opens in the vertical direction. The replacement auxiliary tool includes a closing plate, which is a plate-shaped tool with parallel front and rear sides. The length between the front and rear sides is longer than the front-back length of the first opening. The rear side rests on the rear edge of the first opening, and the front side rests on the front edge of the first opening. The closing plate is positioned below the control equipment between the front edge and the rear edge of the first opening.

[0011] The inspection method disclosed herein is a method for replacing the control device using the aforementioned replacement auxiliary tools, comprising the following steps: placing the sealing plate at a position lower than the existing control device, between the front edge and the rear edge of the first opening; removing the existing control device from the mounting surface; tilting the existing control device forward and placing it on the upper surface of the sealing plate; with the existing control device placed on the upper surface of the sealing plate, removing the sealing plate from the mounting stand; removing the existing control device from the upper surface of the sealing plate and placing the newly installed control device on the upper surface of the sealing plate; with the newly installed control device placed on the upper surface of the sealing plate, placing the sealing plate between the front edge and the rear edge of the first opening; erecting the newly installed control device from the front on the upper surface of the sealing plate; installing the newly installed control device on the mounting surface; and removing the sealing plate from the mounting stand.

[0012] The inspection method disclosed herein is a method for replacing the control device using the aforementioned replacement auxiliary tool. The replacement auxiliary tool further comprises a pair of rods whose length in the longitudinal direction is longer than the length between the front and rear sides. The inspection method includes the following steps: placing the sealing plate below the existing control device between the front edge and the rear edge of the first opening; removing the existing control device from the mounting surface; tilting the existing control device forward and placing it on the upper surface of the sealing plate; with the existing control device placed on the upper surface of the sealing plate, moving the sealing plate from the mounting stand onto the pair of parallel rods; removing the existing control device from the upper surface of the sealing plate and placing the newly installed control device on... The upper surface of the sealing plate; with the newly installed control device placed on the upper surface of the sealing plate, the sealing plate is positioned between the front edge and the rear edge of the first opening; the newly installed control device is erected from the front on the upper surface of the sealing plate; one of the pair of rods is positioned on the upper surface of the sealing plate facing left and right, and the other of the pair of rods is positioned on it facing forward and backward, with the rear end of the upper rod positioned below the newly installed control device, and the vertical position of the newly installed control device is adjusted by moving the front end of the upper rod positioned up and down; the newly installed control device is installed on the mounting surface; and the pair of rods and the sealing plate are removed from the mounting frame.

[0013] Effects of the Invention

[0014] The replacement of auxiliary tools or methods disclosed herein can further improve the workability of elevator control equipment replacement operations. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the elevator in Implementation Method 1.

[0016] Figure 2 This is a structural diagram of the control panel in Implementation Method 1, viewed from the left and right sides.

[0017] Figure 3 This is a structural diagram of the control panel in Implementation Method 1, viewed from the front and back.

[0018] Figure 4 This is a structural diagram of the control panel in Implementation Method 1, viewed from above and below.

[0019] Figure 5 This is a perspective view of the replacement auxiliary equipment in Implementation Method 1.

[0020] Figure 6 This is a perspective view of the electromagnetic contactor installed during the replacement operation of the replacement auxiliary tool using Embodiment 1.

[0021] Figure 7 This is a perspective view of the electromagnetic contactor installed during the replacement operation of the replacement auxiliary tool using Embodiment 1.

[0022] Figure 8 This is a perspective view of the electromagnetic contactor installed during the replacement operation of the replacement auxiliary tool using Embodiment 1.

[0023] Figure 9 This diagram shows the electromagnetic contactor being moved during the replacement operation of the replacement auxiliary tool using Embodiment 1.

[0024] Figure 10 This is a perspective view of the newly installed electromagnetic contactor during the replacement operation of the auxiliary equipment using Embodiment 1.

[0025] Figure 11 This is a perspective view of the replacement auxiliary equipment in Implementation Method 2. Detailed Implementation

[0026] The embodiments for implementing this disclosure will be described with reference to the accompanying drawings. In the drawings, identical or equivalent parts are labeled with the same reference numerals, and repetitive descriptions are appropriately simplified or omitted. Furthermore, the scope of this disclosure is not limited to the following embodiments; any modifications to the constituent elements of the embodiments, or the omission of any constituent elements of the embodiments, are possible without departing from the spirit of this disclosure.

[0027] Implementation method 1.

[0028] Figure 1 This is a structural diagram of elevator 1 according to implementation method 1.

[0029] Elevator 1 is used in buildings with multiple floors. A shaft 2 is provided within the building. The shaft 2 is a long space extending vertically and spanning multiple floors. In this example, a machine room 3 is located above the shaft 2. Elevator 1 includes a traction machine 4, main ropes 5, a car 6, a counterweight 7, and a control panel 8.

[0030] The traction machine 4 is installed, for example, in the machine room 3. The traction machine 4 can also be installed above or below the shaft 2. The traction machine 4 is a device that generates driving force. The traction machine 4 has a drive sheave 9 that rotates by the driving force generated by a motor (not shown).

[0031] The main rope 5 is wound around the drive sheave 9. The main rope 5 supports the load of the car 6 on one side of the drive sheave 9. The main rope 5 supports the load of the counterweight 7 on the other side of the drive sheave 9.

[0032] One of the car 6 and the counterweight 7 travels upward in the hoistway 2 by being wound up via the main rope 5 through the rotation of the drive sheave 9. Meanwhile, the other of the car 6 and the counterweight 7 travels downward in the hoistway 2. The car 6 is a device that transports passengers between multiple floors by traveling vertically within the hoistway 2. The weight of the counterweight 7 is set considering the balance between the load on the car 6 applied to both sides of the drive sheave 9 via the main rope 5 and the load on the counterweight 7.

[0033] The control panel 8 is installed, for example, in the machine room 3. The control panel 8 can also be installed at the top or bottom of the hoistway 2. The control panel 8 is a device for controlling the operation of the elevator 1. For example, the control panel 8 controls the vertical movement of the car 6. In this example, the worker performing maintenance on the control panel 8 faces the front surface of the control panel 8. The front-back direction is a direction within a horizontal plane perpendicular to the vertical direction. The left-right direction is a direction perpendicular to the front-back direction within a horizontal plane.

[0034] Next, use Figures 2 to 4 An example of the structure of control panel 8 will be given.

[0035] Figure 2 This is a structural diagram of the control panel 8 in Implementation Method 1, viewed from the left and right sides.

[0036] In this example, the control panel 8 is housed in a rectangular cabinet 10. A door 11 is provided on the front surface of the cabinet 10. The door 11 is opened, for example, during maintenance work on the control panel 8. The door 11 may also be removable. Here, the control panel 8 may also consist of one or more panels. The control panel 8 may, for example, be part or all of the control system of the elevator 1, which consists of multiple panels. The control panel 8 may also be, for example, an auxiliary panel.

[0037] The control panel 8 includes a mounting bracket 12. The mounting bracket 12 is a frame for mounting the control equipment constituting the control panel 8 of the elevator 1. The mounting bracket 12 is housed within the cabinet 10. Alternatively, the mounting bracket 12 may be integrated with the cabinet 10. In this example, the control equipment of the elevator 1 is, for example, an electromagnetic contactor 13. Furthermore, the control equipment of the elevator 1 may also be an electromagnetic relay or an electromagnetic switch. In this example, the control panel 8 is divided into an upper and a lower layer. A first opening 14 is provided between the upper and lower layers of the control panel 8. The first opening 14 is an opening that opens in the vertical direction.

[0038] The electromagnetic contactor 13 is mounted on the mounting surface 15 of the mounting bracket 12. The mounting surface 15 is a surface arranged with its normal direction facing the front-to-back direction. That is, the mounting surface 15 is arranged parallel to the vertical and horizontal directions. The mounting surface 15 is, for example, located inside the cabinet 10 on the rear side. The mounting surface 15 is positioned above the first opening 14. The electromagnetic contactor 13 is mounted on the front side of the mounting surface 15, for example, using fasteners 16 such as screws or bolts. The electromagnetic contactor 13 is located on the upper layer of the control panel 8.

[0039] The electromagnetic contactor 13 is housed inside the cabinet 10 within a cover 17. The cover 17 is, for example, a soundproof cover that suppresses the transmission of noise generated from the electromagnetic contactor 13 into the car 6. In this example, the cover 17 is positioned above the first opening 14. A cover 18 is provided on the front surface of the cover 17. The cover 18 is opened, for example, during maintenance work on the electromagnetic contactor 13. The cover 18 may also be removable. A second opening 19 is provided on the front surface of the cover 17. The second opening 19 opens forward. Normally, the second opening 19 is closed by the cover 18.

[0040] In this example, the mounting platform 12 has a front beam 20, a rear beam 21, and two side beams 22 between the upper and lower layers of the control panel 8. The front beam 20 is positioned at the front of the mounting platform 12 with its length in the left-right direction. The rear beam 21 is positioned at the rear of the mounting platform 12 with its length in the left-right direction. One side beam 22 is positioned on the left side of the mounting platform 12 with its length in the front-back direction. The other side beam 22 is positioned on the right side of the mounting platform 12 with its length in the front-back direction. The front beam 20, rear beam 21, and two side beams 22 are arranged in the same horizontal plane. The front beam 20, rear beam 21, and two side beams 22 form the edge of the first opening 14. That is, the front beam 20 is the front edge of the first opening 14. Additionally, the rear beam 21 is the rear edge of the first opening 14. The left side beam 22 is the left edge of the first opening 14. The right side beam 22 is the right edge of the first opening 14.

[0041] Figure 3 This is a structural diagram of the control panel 8 in Implementation Method 1, viewed from the front and back.

[0042] In the electromagnetic contactor 13, the lead 23 extends from the lower surface. In this example, the lower surface of the cover 17 housing the electromagnetic contactor 13 is open in such a way that the lead 23 can be led out. The lead 23 extends from the upper layer to the lower layer of the control panel 8, for example, through the first opening 14. The lead 23 is connected, for example, to the lower device 24 disposed on the lower layer of the control panel 8.

[0043] In this example, the mounting bracket 12 has two longitudinal posts 25 on the front surface of the control panel 8. Each longitudinal post 25 is arranged with its length along the vertical direction. One longitudinal post 25 is located on the left side of the front surface of the mounting bracket 12. The other longitudinal post 25 is located on the right side of the front surface of the mounting bracket 12. The door 11 of the cabinet 10 is mounted, for example, on the two longitudinal posts 25 of the mounting bracket 12 and the front frame.

[0044] Figure 4 This is a structural diagram of the control panel 8 in Implementation Method 1, viewed from above and below.

[0045] The front-to-back length L1 of the first opening 14 is the length from the front end of the rear beam 21 to the rear end of the front beam 20. The front-to-back length L2 of the mounting platform 12 is the length from the rear end of the rear beam 21 to the front end of the front beam 20. That is, the front-to-back length L2 of the mounting platform 12 is the sum of the front-to-back length L1 of the first opening 14, the front-to-back width L3 of the rear beam 21, and the front-to-back width L4 of the front beam 20.

[0046] The lateral spacing L5 between the two longitudinal columns 25 is the length from the right end of the left longitudinal column 25 to the left end of the right longitudinal column 25. The lateral width L6 of the mounting platform 12 is the length from the left end of the left longitudinal column 25 to the right end of the right longitudinal column 25. That is, the lateral width L6 of the mounting platform 12 is the length obtained by adding the lateral spacing L5 between the two longitudinal columns 25 and the lateral width L7 of each longitudinal column 25.

[0047] The lateral width L7 of each longitudinal column 25 is longer than the lateral width L8 of each side beam 22. The longitudinal width L9 of each longitudinal column 25 is longer than the longitudinal width L4 of the front beam 20. Therefore, when projected onto the horizontal plane, each longitudinal column 25 protrudes from the side beam 22 toward the first opening 14 within the horizontal projection plane. That is, each longitudinal column 25 becomes an example of a protrusion.

[0048] The width L10 of the second opening 19 in the left-right direction is shorter than the left-right interval L5 between the two longitudinal columns 25. The width L11 of the electromagnetic contactor 13 in the left-right direction is shorter than the width L10 of the second opening 19 in the left-right direction.

[0049] When replacing the existing electromagnetic contactor 13 with a newly installed one, the operator needs to perform the replacement work above the first opening 14. At this time, the operator needs to stand slightly forward of the front of the control panel 8, reaching behind it to perform the work. During this process, the operator must be careful to prevent the electromagnetic contactor 13, or its accessories, which are heavy objects, from falling through the first opening 14 and colliding with the lower equipment 24 below. Therefore, to improve the ease of the replacement work and reduce the workload of the operator, replacement auxiliary tools are used during the replacement of the electromagnetic contactor 13.

[0050] Figure 5 This is a perspective view of the replacement auxiliary tool 26 in Embodiment 1.

[0051] The replacement auxiliary tool 26 includes a sealing plate 27 and a pair of rods 28.

[0052] The closing plate 27 is a plate-shaped component. The closing plate 27 is, for example, a metal plate. The closing plate 27 is, for example, rectangular. The outer perimeter of the closing plate 27 includes a front side 29, a rear side 30, a side side 31a, and a side side 31b. In this example, the closing plate 27 is a rectangular shape with a cutout 32 on the side side 31a. The front side 29 is the front end side of the closing plate 27. The rear side 30 is the rear end side of the closing plate 27. The side side 31a is the left end side of the closing plate 27. The side side 31b is the right end side of the closing plate 27. The front side 29 and the rear side 30 are parallel opposite sides. The side sides 31a and 31b are parallel opposite sides. Figure 5 The diagram shows the closed panel 27 as viewed from the top surface. Markings 33 are affixed around the top surface of the closed panel 27. These markings 33 may be, for example, labels with an eye-catching color such as yellow or patterns. In this example, the outer perimeter of the closed panel 27 is chamfered. The lower surface of the closed panel 27 is a flat plane.

[0053] The front-to-back length of the closing plate 27 is the length X1 between the front edge 29 and the rear edge 30. The length X1 between the front edge 29 and the rear edge 30 is longer than the front-to-back length L1 of the first opening 14. In this example, the length X1 between the front edge 29 and the rear edge 30 is longer than the front-to-back length from the rear edge of the first opening 14 to the front end of the front beam 20, i.e., the sum of the front-to-back length L1 of the first opening 14 and the front-to-back width L4 of the front beam 20. The length X1 between the front edge 29 and the rear edge 30 may also be longer than the front-to-back length L2 of the mounting bracket 12.

[0054] The length of the enclosed plate 27 in the left-right direction is the length X2 between side 31a and side 31b. The length X2 between side 31a and side 31b is shorter than the left-right interval L5 between the two longitudinal columns 25. The length X2 between side 31a and side 31b is longer than the left-right width L11 of the electromagnetic contactor 13. The length X2 between side 31a and side 31b can also be longer than the left-right width L10 of the second opening 19.

[0055] The cutout 32 is provided in a shape that follows the shape of the protrusion projecting from the side beam 22 toward the first opening 14 in the horizontal projection plane. In this example, the cutout 32 is provided in a shape that follows the horizontal cross-section of the longitudinal column 25, which is an example of a protrusion. For example, if the longitudinal column 25 is a quadrangular prism, the cutout 32 is provided in a quadrilateral shape.

[0056] Each rod 28 is a rod-shaped component that is longer in one direction. In this example, each rod 28 is a square prism. Each rod 28 is, for example, wood. The length X3 of each rod 28 in the longitudinal direction is longer than the length X1 between the front side 29 and the rear side 30 of the closing plate 27. In this example, the lengths of a pair of rods 28 are equal. Alternatively, the lengths of a pair of rods 28 may be different. In this case, the length in the longitudinal direction of the shorter rod 28 may also be shorter than the length X2 between the side sides 31a and 31b of the closing plate 27.

[0057] Next, use Figures 6 to 10 This section illustrates an example of replacing electromagnetic contactor 13. Operators can change the order of the steps in this replacement operation as far as possible, or they can perform the steps in parallel as far as possible.

[0058] Figures 6 to 8 This is a perspective view of the electromagnetic contactor 13 installed during the replacement operation using the replacement auxiliary tool 26 of Embodiment 1.

[0059] Figure 9 This is a diagram showing the electromagnetic contactor 13 being moved during a replacement operation using the replacement auxiliary tool 26 in Embodiment 1.

[0060] Figure 10 This is a perspective view of the newly installed electromagnetic contactor 13 during the replacement operation using the replacement auxiliary tool 26 of Embodiment 1.

[0061] First, such as Figure 6 As shown, the operator opens the door 11 of cabinet 10 and the cover 18 of cover 17. The operator then removes the lead wire 23 through the first opening 14.

[0062] Next, the operator inserts the enclosure plate 27 from the front under the installed electromagnetic contactor 13 and cover 17. At this time, the operator inserts the enclosure plate 27 with its rear edge 30 facing the rear of the control panel 8. The operator places the rear edge 30 of the enclosure plate 27 on the rear beam 21 of the mounting bracket 12. Alternatively, the operator can position the enclosure plate 27 closer to the left side of the control panel 8, so that its side edge 31a is positioned above the side beam 22 of the mounting bracket 12. Because the side edge 31a of the enclosure plate 27 has a cutout 32 in the shape of the horizontal cross-section along the longitudinal column 25, the operator can position the enclosure plate 27 closer to the left side without being obstructed by the longitudinal column 25. Then, the operator places the front end of the enclosure plate 27 on the front beam 20 of the mounting bracket 12. Thus, the operator positions the enclosure plate 27 between the front edge and the rear edge of the first opening 14. Thus, the first opening 14 below the installed electromagnetic contactor 13 is closed by the sealing plate 27. At this time, the front edge 29 of the sealing plate 27 extends forward beyond the front end of the front beam 20 of the mounting bracket 12. In addition, the side edge 31a of the sealing plate 27 rests on the side beam 22, which serves as the left edge of the first opening 14.

[0063] Next, the operator removed the installed electromagnetic contactor 13 from the mounting surface 15 by loosening the fastener 16.

[0064] Next, as Figure 7 As shown, the operator tilts the installed electromagnetic contactor 13 forward from above the enclosure plate 27. At this time, the lower end of the installed electromagnetic contactor 13 can also be placed on the upper surface of the enclosure plate 27. That is, the operator can also use the lower end of the installed electromagnetic contactor 13 as a fulcrum to tilt the installed electromagnetic contactor 13 forward. Then, as... Figure 8As shown, the operator places the installed electromagnetic contactor 13 on the upper surface of the enclosed plate 27.

[0065] Next, as Figure 9 As shown, the operator arranges a pair of bars 28 parallel to each other on the floor of a work area such as machine room 3. At this time, the pair of bars 28 are arranged such that the interval between them is shorter than the length of the enclosure plate 27 in the left-right direction. Each bar 28 is arranged with its length facing forward-backward.

[0066] Next, with the installed electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the operator lifts the front edge 29 of the enclosure plate 27, which extends forward from the front end of the front beam 20 of the mounting platform 12. At this time, the operator can also move the enclosure plate 27 closer to the right side of the control panel 8 so that the side edge 31a of the enclosure plate 27 moves away from the side beam 22 of the mounting platform 12. The operator holds the side edge 31a of the enclosure plate 27 and lifts the installed electromagnetic contactor 13 and the enclosure plate 27. Here, the side edge 31b of the enclosure plate 27 is lifted by another operator. With the installed electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the operator removes the enclosure plate 27 from the mounting platform 12. At this time, the operator can also move the enclosure plate 27 closer to the front by sliding its flat lower surface on the front beam 20. Because the loads of the enclosure plate 27 and the installed electromagnetic contactor 13 are supported by the front beam 20 and the enclosure plate 27 is close to the operator, the operator can easily lift the enclosure plate 27 and the installed electromagnetic contactor 13.

[0067] Next, two workers carrying the enclosure plate 27 and the installed electromagnetic contactor 13 stand with a pair of rods 28 held between them in a direction perpendicular to the length of each rod 28. With the installed electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the two workers lift the enclosure plate 27 onto the pair of rods 28 arranged on the ground. At this time, the enclosure plate 27 is lifted onto the pair of rods 28 with its sides 31a and 31b along the length of each rod 28. Since there are no rods 28 below the sides 31a and 31b held by the workers, the workers can easily lift the enclosure plate 27 onto the pair of rods 28.

[0068] Next, the workers removed the existing electromagnetic contactor 13 from the upper surface of the enclosure plate 27. Then, the workers placed the newly installed electromagnetic contactor 13 on the upper surface of the enclosure plate 27.

[0069] Next, two workers stand with a pair of bars 28 spaced apart, perpendicular to the length direction of each bar 28. With the newly installed electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the two workers lift the enclosure plate 27 from the pair of bars 28 arranged on the ground. With the newly installed electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the workers position the enclosure plate 27 between the front edge and the rear edge of the first opening 14. At this time, the workers can also move the enclosure plate 27 closer to the rear by sliding its flat lower surface on the front beam 20. Alternatively, the workers can move the enclosure plate 27 closer to the left side of the control panel 8 so that the side 31a of the enclosure plate 27 is positioned above the side beam 22 of the mounting platform 12.

[0070] Next, the operator erects the newly installed electromagnetic contactor 13 from the front on the upper surface of the enclosure plate 27. At this time, the operator can also use the lower end of the newly installed electromagnetic contactor 13 as a fulcrum to erect the newly installed electromagnetic contactor 13 from the front.

[0071] Next, as Figure 10 As shown, the operator places a rod 28 on the upper surface of the enclosure plate 27, oriented left to right. At this time, the operator places the rod 28 in front of the electromagnetic contactor 13, which is erected from the front. When the lengths of the two rods 28 are different, the operator places the shorter rod 28 on the upper surface of the enclosure plate 27, oriented left to right. Then, the operator places the other rod 28 on top of the rod 28 oriented left to right, oriented forward to backward. The operator inserts the rear end of the upper rod 28 below the newly installed electromagnetic contactor 13. Then, the operator adjusts the vertical position of the newly installed electromagnetic contactor 13 by moving the front end of the upper rod 28 up and down. That is, the operator adjusts the vertical position of the newly installed electromagnetic contactor 13 by using the upper rod 28 as a lever with the part in contact with the lower rod 28 as a fulcrum, the front end as a force point, and the rear end as the point of action. The operator adjusts the vertical position of the newly installed electromagnetic contactor 13 so that the mounting surface 15 and the mounting position of the fastener 16 of the newly installed contactor are aligned.

[0072] Next, the operator installs the newly installed electromagnetic contactor 13 onto the mounting surface 15 by tightening the fasteners 16.

[0073] Next, the workers removed a pair of rods 28 and a closing plate 27 from the mounting frame 12.

[0074] Next, the operator guides the lead wire 23 from the newly installed electromagnetic contactor 13 through the first opening 14. After connecting the lead wire 23 to the lower device 24 and performing necessary checks, the operator closes the cover 18 of the enclosure 17 and the door 11 of the cabinet 10.

[0075] As described above, the replacement auxiliary tool 26 of Embodiment 1 is used for replacing the electromagnetic contactor 13 of the elevator 1. The electromagnetic contactor 13 is mounted on the front side of the mounting surface 15 included in the mounting bracket 12. The mounting surface 15 is a surface parallel to the vertical and horizontal directions and perpendicular to the front-back direction. The mounting bracket 12 forms an edge of a first opening 14 that opens vertically below the mounting surface 15. The replacement auxiliary tool 26 includes a closing plate 27. The closing plate 27 is a plate-shaped device with a front edge 29 and a rear edge 30 that are parallel to each other. In the closing plate 27, the length between the front edge 29 and the rear edge 30 is longer than the front-back length of the first opening 14. The rear edge 30 of the closing plate 27 rests on the rear edge of the first opening 14. The front edge 29 of the closing plate 27 rests on the front edge of the first opening 14. The closing plate 27 is positioned below the electromagnetic contactor 13 between the front edge and the rear edge of the first opening 14.

[0076] In the replacement method of Embodiment 1, the sealing plate 27 is positioned below the existing electromagnetic contactor 13, between the front edge and the rear edge of the first opening 14. Then, the existing electromagnetic contactor 13 is removed from the mounting surface 15. Next, the existing electromagnetic contactor 13 is tilted forward and placed on the upper surface of the sealing plate 27. Then, with the existing electromagnetic contactor 13 placed on the upper surface of the sealing plate 27, the sealing plate 27 is removed from the mounting stand 12. Then, the existing electromagnetic contactor 13 is removed from the upper surface of the sealing plate 27, and a new electromagnetic contactor 13 is placed on the upper surface of the sealing plate 27. Then, with the new electromagnetic contactor 13 placed on the upper surface of the sealing plate 27, the sealing plate 27 is positioned between the front edge and the rear edge of the first opening 14. Then, the newly installed electromagnetic contactor 13 is erected from the front on the upper surface of the enclosure plate 27. The newly installed electromagnetic contactor 13 is then installed on the mounting surface 15. Finally, the enclosure plate 27 is removed from the mounting bracket 12.

[0077] With this structure, the first opening 14 below the electromagnetic contactor 13 is closed by the sealing plate 27, thus preventing the electromagnetic contactor 13 or its accessories from falling out of the first opening 14. This reduces the workload of the operators. In addition, since the electromagnetic contactor 13, which is a heavy object, is moved from the mounting platform 12 in a tilted position on the sealing plate 27, the workability of the replacement operation is improved.

[0078] Additionally, the front edge of the first opening 14 is the front beam 20 of the mounting bracket 12. The length between the front edge 29 and the rear edge 30 of the closing plate 27 is longer than the length in the front-rear direction from the rear edge of the first opening 14 to the front end of the front beam 20.

[0079] With this structure, the front edge 29 of the enclosure plate 27 extends forward beyond the front end of the front beam 20 of the mounting platform 12, making it easier for operators to lift the enclosure plate 27, which carries the installed electromagnetic contactor 13, from the mounting platform 12. Therefore, the workability of the replacement operation is further improved.

[0080] Additionally, the left and right edges of the first opening 14 are side beams 22 of the mounting platform 12. The mounting platform 12 has longitudinal columns 25 that project from the side beams 22 toward the first opening 14 in the horizontal projection plane. In the enclosed plate 27, a cutout 32 is provided on the side 31a perpendicular to the front side 29 and the rear side 30, following the shape of the longitudinal column 25 in the horizontal projection plane. The side 31a is supported by the side beams 22.

[0081] With this structure, the side of the first opening 14 is also closed by the sealing plate 27, making it less likely for the electromagnetic contactor 13 or its accessories to fall off, further reducing the workload of the operator. Furthermore, the front 29, rear 30, and side 31a of the sealing plate 27 are supported on the mounting platform 12, thus providing more stable support for the sealing plate 27. This further improves the workability of the replacement operation.

[0082] In addition, the outer periphery of the closed plate 27 is chamfered.

[0083] With this structure, the various parts of the control panel 8, such as the cabinet 10 and the electromagnetic contactor 13, are less likely to be damaged by the enclosure 27. In addition, the outer periphery of the enclosure 27 is less likely to get stuck, thus further reducing the workload of the operator who operates the enclosure 27.

[0084] Additionally, the replacement auxiliary tool 26 includes a pair of rods 28. The length of each rod 28 in the longitudinal direction is longer than the length between the front edge 29 and the rear edge 30 of the closing plate 27.

[0085] In the replacement method using the replacement auxiliary tool 26, with the existing electromagnetic contactor 13 placed on the upper surface of the enclosure plate 27, the enclosure plate 27 is moved from the mounting stand 12 onto a pair of parallel rods 28. After the newly installed control device is erected from the front on the upper surface of the enclosure plate 27, one rod 28 is positioned on the upper surface of the enclosure plate 27 in a left-right direction. The other rod 28 is positioned on top of it in a front-back direction. The rear end of the upper rod 28 is positioned below the newly installed electromagnetic contactor 13. The vertical position of the newly installed electromagnetic contactor 13 is adjusted by moving the front end of the upper rod 28 up and down. Then, the newly installed electromagnetic contactor 13 is installed on the mounting surface 15. Finally, the pair of rods 28 and the enclosure plate 27 are removed from the mounting stand 12.

[0086] With this structure, workers can more easily perform tasks such as temporarily placing the enclosure panel 27 on the ground. Furthermore, the pair of rods 28 can be used as levers to adjust the position of the electromagnetic contactor 13, which acts as a weight, thus further reducing the workload of the workers. Additionally, the rods 28 used for temporarily placing the enclosure panel 27 can also be used as levers. This reduces the number of tools brought to the work site, further reducing the workload of the workers.

[0087] The electromagnetic contactor 13 is housed in the cover 17. The cover 17 has a second opening 19 that opens forward. At this time, the length of the rear side 30 of the closing plate 27 can also be shorter than the length of the second opening 19 in the left-right direction. Thus, the closing plate 27 can be inserted into the inside of the cover 17 from the second opening 19. Therefore, even when the lower end of the cover 17 is located below the first opening 14, or when the lower surface of the cover 17 is not open, the closing plate 27 can be inserted below the electromagnetic contactor 13 to close the first opening 14. Here, the edge of the first opening 14 on which the closing plate 27 is placed can also be a part other than the beam of the mounting bracket 12. The edge of the first opening 14 can also be a bolt or rib protruding towards the inside of the cabinet 10. The edge of the first opening 14 on which the closing plate 27 is placed can also be, for example, part of the cabinet 10 or part of the equipment inside the cabinet 10, such as the cover 17.

[0088] Implementation method 2.

[0089] In Embodiment 2, the differences from the example disclosed in Embodiment 1 are described in particular detail. Regarding features not described in Embodiment 2, any feature from the example disclosed in Embodiment 1 may be used.

[0090] Figure 11 This is a perspective view of the replacement auxiliary tool 26 in embodiment 2.

[0091] The enclosure 27 has handles 34 on both the left and right sides of its upper surface. The handles 34 are mounted from the upper surface side. The handles 34 are, for example, semi-circular, semi-elliptical, semi-oblong, or trapezoidal in shape. The handles 34 do not protrude into the lower surface of the enclosure 27; that is, the lower surface of the enclosure 27 is a flat plane. The handles 34 are mounted to the upper surface of the enclosure 27, for example, by welding. Alternatively, the handles 34 may be provided only on the left and right sides of the enclosure 27.

[0092] With this structure, operators can more easily lift the enclosure plate 27, which houses the installed electromagnetic contactor 13, from the mounting platform 12 by holding the handle 34. Therefore, the workability of the replacement operation is further improved. Furthermore, since the lower surface of the enclosure plate 27 is flat, operators can easily move the enclosure plate 27 forward and backward by sliding it over the front beam 20. Because the load of the enclosure plate 27 and the installed electromagnetic contactor 13 is stored on the front beam 20 while the enclosure plate 27 is moved back and forth, the operator's workload is further reduced.

[0093] Industrial availability

[0094] The replacement auxiliary tools and replacement method disclosed herein can be applied to the replacement of elevator control equipment.

[0095] Label Explanation

[0096] 1: Elevator; 2: Shaft; 3: Machine room; 4: Traction machine; 5: Main rope; 6: Car; 7: Counterweight; 8: Control panel; 9: Drive pulley; 10: Cabinet; 11: Door; 12: Mounting platform; 13: Electromagnetic contactor; 14: First opening; 15: Mounting surface; 16: Fastener; 17: Cover; 18: Cover; 19: Second opening; 20: Front beam; 21: Rear beam; 22: Side beam; 23: Lead wire; 24: Lower equipment; 25: Longitudinal column; 26: Replacement auxiliary tool; 27: Enclosure plate; 28: Bar stock; 29: Front; 30: Rear; 31a, 31b: Side; 32: Cutout; 33: Marking; 34: Handle.

Claims

1. A replacement auxiliary tool for elevator control equipment, wherein the elevator control equipment is mounted on the front side of a mounting surface in a mounting bracket, the mounting bracket including the mounting surface parallel to the vertical and horizontal directions and perpendicular to the front-back direction, and having an edge forming a first opening in the vertical direction below the mounting surface. The replacement auxiliary tool includes a closure plate, which is a plate-shaped tool with parallel front and rear sides. The length between the front and rear sides is longer than the length of the first opening in the front-rear direction. The rear side is placed on the rear edge of the first opening, and the front side is placed on the front edge of the first opening. The closure plate is mounted between the front edge and the rear edge of the first opening at a position lower than the control device.

2. The auxiliary tool replacement according to claim 1, wherein, The front edge of the first opening is the front beam of the mounting platform. The length between the front and the rear sides is longer than the length in the front-rear direction from the rear edge of the first opening to the front end of the front beam.

3. The auxiliary tool for replacement according to claim 1 or 2, wherein, The control device is housed in a cover having a second opening that opens forward. The length of the rear side is shorter than the length of the second opening in the left-right direction.

4. The auxiliary tool for replacement according to claim 1 or 2, wherein, The left and right edges of the first opening are the side beams of the mounting platform. The mounting platform has a protrusion that extends from the side beam toward the first opening side in the horizontal projection plane. In the enclosed plate, a cutout is provided on a side perpendicular to the front and rear sides, following the shape of the protrusion within the horizontal projection plane. The side is mounted on the side beam.

5. The auxiliary tool for replacement according to claim 1 or 2, wherein, The outer periphery of the enclosure plate is chamfered.

6. The auxiliary tool for replacement according to claim 1 or 2, wherein, The enclosure plate has handles mounted from the top surface on one or both sides of its upper surface. The lower surface of the sealing plate is flat.

7. The auxiliary tool for replacement according to claim 1 or 2, wherein, The replacement aid has a pair of rods, the length of which is longer than the length between the front and the rear.

8. A replacement method for the control device using the replacement auxiliary tool as described in claim 1 or 2, comprising the following steps: The sealing plate is positioned below the existing control device, between the front edge and the rear edge of the first opening; Remove the existing control device from the mounting surface; The control device is tilted forward and placed on the upper surface of the enclosed plate; With the control device already installed on the upper surface of the enclosure plate, the enclosure plate is removed from the mounting frame. Remove the existing control device from the upper surface of the enclosure plate and place the newly installed control device on the upper surface of the enclosure plate; With the newly installed control device placed on the upper surface of the sealing plate, the sealing plate is positioned between the front edge of the first opening and the rear edge of the first opening. The newly installed control device is erected from the front on the upper surface of the enclosure plate; The newly installed control device is installed on the mounting surface; as well as Remove the enclosure plate from the mounting bracket.

9. A replacement method for the control device using the replacement auxiliary tool as described in claim 7, comprising the following steps: The sealing plate is positioned below the existing control device, between the front edge and the rear edge of the first opening; Remove the existing control device from the mounting surface; The control device is tilted forward and placed on the upper surface of the enclosed plate; With the control device already installed and placed on the upper surface of the enclosure plate, the enclosure plate is moved from the mounting frame onto the pair of parallel bars. Remove the existing control device from the upper surface of the enclosure plate and place the newly installed control device on the upper surface of the enclosure plate; With the newly installed control device placed on the upper surface of the sealing plate, the sealing plate is positioned between the front edge of the first opening and the rear edge of the first opening. The newly installed control device is erected from the front on the upper surface of the enclosure plate; One of the pair of bars is positioned on the upper surface of the closed plate in a left-right direction, and the other of the pair of bars is positioned on it in a front-back direction. The rear end of the upper-positioned bar is positioned below the newly installed control device. The vertical position of the newly installed control device is adjusted by moving the front end of the upper-positioned bar up and down. The newly installed control device is installed on the mounting surface; as well as Remove the pair of bars and the closing plate from the mounting frame.

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