Replacement aid and replacement method for elevator control device

Abstract

The invention provides a replacement auxiliary tool and a replacement method which can further improve the operability of replacement work of control equipment of an elevator. The replacement aid (26) is used for replacement work of a control device (13) of an elevator (1). The mounting stand (12) forms an edge of a first opening (14) opened in the vertical direction below a mounting surface (15) on which the control device (13) is mounted. The length of the closing plate (27) of the replacement aid (26) in the front-rear direction is longer than the length of the first opening (14) in the front-rear direction. The closing plate (27) is bridged between the edge of the front side of the first opening (14) and the edge of the rear side of the first opening (14) at a position below the control device (13).

Description

Technical Field

[0001] The present disclosure relates to a replacement assistance tool and a replacement method for a control device of an elevator. Background Art

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

[0003] Prior Art Documents

[0004] Patent Documents

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

[0006] Problems to be Solved by the Invention

[0007] In a control device of an elevator such as the electromagnetic contactor of Patent Document 1, other devices connected to leads or the like led out from the lower surface are sometimes arranged below the control device. At this time, an opening through which the lead or other wiring can pass is provided below the control device installed on the vertical plane. When replacing such a control device with a new control device from an existing control device, an operator needs to perform a replacement operation above the opening. Therefore, the workability of the replacement operation is sometimes poor.

[0008] The present disclosure relates to the solution of such a problem. The present disclosure provides a replacement assistance tool and a replacement method that can further improve the workability of the replacement operation of a control device of an elevator.

[0009] Means for Solving the Problems

[0010] The replacement assistance tool of the present disclosure is a replacement assistance tool for a control device of an elevator, and the control device of the elevator is installed on the front side of an installation surface in an installation frame. The installation frame includes the installation surface parallel to the vertical direction and the horizontal direction and perpendicular to the front-rear direction, and an edge of a first opening that opens in the vertical direction is formed below the installation surface. The replacement assistance tool includes a closing plate, and the closing plate has a plate shape with a front edge and a rear edge parallel to each other. The length between the front edge and the rear edge is longer than the length in the front-rear direction of the first opening. The rear edge is placed on the rear edge of the first opening, and the front edge is placed on the front edge of the first opening. The closing plate is installed between the front edge of the first opening and the rear edge of the first opening at a position lower than the control device.

[0011] The inspection method of the present disclosure is a replacement method of the control device using the above-described replacement auxiliary tool, and includes the following steps: placing the closing plate between the front edge and the rear edge of the first opening, which are provided at a position lower than the already installed control device; removing the already installed control device from the mounting surface; tilting the already installed control device forward and placing it on the upper surface of the closing plate; while the already installed control device is placed on the upper surface of the closing plate, removing the closing plate from the mounting bracket; removing the already installed control device from the upper surface of the closing plate and placing the newly installed control device on the upper surface of the closing plate; while the newly installed control device is placed on the upper surface of the closing plate, placing the closing plate between the front edge and the rear edge of the first opening; standing up the newly installed control device from the front on the upper surface of the closing plate; installing the newly installed control device on the mounting surface; and removing the closing plate from the mounting bracket.

[0012] The inspection method of the present disclosure is a replacement method of the control device using the above-described replacement auxiliary tool, and the replacement auxiliary tool further includes a pair of bars having a length in the length direction longer than the length between the front side and the rear side. The inspection method includes the following steps: placing the closing plate between the front edge and the rear edge of the first opening, which are provided at a position lower than the already installed control device; removing the already installed control device from the mounting surface; tilting the already installed control device forward and placing it on the upper surface of the closing plate; while the already installed control device is placed on the upper surface of the closing plate, moving the closing plate from the mounting bracket onto the pair of bars arranged in parallel; removing the already installed control device from the upper surface of the closing plate and placing the newly installed control device on the upper surface of the closing plate; while the newly installed control device is placed on the upper surface of the closing plate, placing the closing plate between the front edge and the rear edge of the first opening; standing up the newly installed control device from the front on the upper surface of the closing plate; arranging one of the pair of bars on the upper surface of the closing plate in the left-right direction, arranging the other of the pair of bars in the front-rear direction thereon, arranging the rear end of the one of the pair of bars arranged on the upper side below the newly installed control device, and adjusting the vertical position of the newly installed control device by moving the front end of the one of the pair of bars arranged on the upper side up and down; installing the newly installed control device on the mounting surface; and removing the pair of bars and the closing plate from the mounting bracket.

[0013] Advantages of the Invention

[0014] According to the replacement auxiliary tool or replacement method of the present disclosure, the workability of the replacement operation of the control device of the elevator can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the elevator according to Embodiment 1.

[0016] Figure 2 It is a structural diagram of the control panel according to Embodiment 1 viewed from the left-right direction.

[0017] Figure 3 It is a structural diagram of the control panel according to Embodiment 1 viewed from the front-back direction.

[0018] Figure 4 It is a structural diagram of the control panel according to Embodiment 1 viewed from the up-down direction.

[0019] Figure 5 It is a perspective view of the replacement auxiliary tool according to Embodiment 1.

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

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

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

[0023] Figure 9 It is a diagram showing the electromagnetic contactor carried during the replacement operation using the replacement auxiliary tool according to Embodiment 1.

[0024] Figure 10 It is a perspective view of the newly installed electromagnetic contactor during the replacement operation using the replacement auxiliary tool according to Embodiment 1.

[0025] Figure 11 It is a perspective view of the replacement auxiliary tool according to Embodiment 2. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The embodiments for implementing the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and repeated descriptions are appropriately simplified or omitted. In addition, the object of the present disclosure is not limited to the following embodiments, and within the scope not departing from the gist of the present disclosure, deformation of any constituent element of the embodiment or omission of any constituent element of the embodiment can be made.

[0027] Embodiment 1.

[0028] Figure 1 It is a structural diagram of the elevator 1 of Embodiment 1.

[0029] The elevator 1 is applied to a building with multiple floors. A hoistway 2 is provided in the building. The hoistway 2 is a space that is long in the vertical direction and extends over multiple floors. In this example, a machine room 3 is provided above the hoistway 2. The elevator 1 includes a traction machine 4, a main rope 5, a car 6, a counterweight 7, and a control panel 8.

[0030] The traction machine 4 is provided, for example, in the machine room 3 or the like. The traction machine 4 may also be provided in the upper or lower part of the hoistway 2. The traction machine 4 is a device that generates driving force. The traction machine 4 includes 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 in a manner of being wound via the main rope 5 by the rotation of the drive sheave 9. At this time, the other of the car 6 and the counterweight 7 travels downward in the hoistway 2. The car 6 is a device that conveys passengers or the like between multiple floors by traveling in the hoistway 2 in the vertical direction. The weight of the counterweight 7 is set in consideration of the balance between the load of the car 6 and the load of the counterweight 7 applied by the main rope 5 on both sides of the drive sheave 9.

[0033] The control panel 8 is provided, for example, in the machine room 3 or the like. The control panel 8 may also be provided in the upper or lower part of the hoistway 2. The control panel 8 is a device that controls the operation of the elevator 1 and the like. The control panel 8 controls, for example, the upward and downward travel of the car 6. In this example, an operator who performs maintenance work on the control panel 8 works facing the front surface of the control panel 8. The front-rear direction is a direction in the horizontal plane perpendicular to the vertical direction. The left-right direction is a direction perpendicular to the front-rear direction among the directions perpendicular to the horizontal plane.

[0034] Next, use Figures 2 to 4 to illustrate an example of the structure of the control panel 8.

[0035] Figure 2 It is a structural diagram of the control panel 8 of Embodiment 1 viewed from the left-right direction.

[0036] In this example, the control panel 8 is housed in a rectangular parallelepiped-shaped 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 or the like. The door 11 can also be detachable. Here, the control panel 8 can also be composed of one or more panels. For example, the control panel 8 can also be part or all of the control system of the elevator 1 composed of multiple panels. The control panel 8 can also be an accessory panel or the like.

[0037] The control panel 8 includes a mounting pedestal 12. The mounting pedestal 12 is a framework or the like for mounting control devices that make up the control panel 8 of the elevator 1. The mounting pedestal 12 is housed in the cabinet 10. The mounting pedestal 12 can also be integrated with the cabinet 10. In this example, the control device of the elevator 1 is, for example, an electromagnetic contactor 13 or the like. In addition, the control device of the elevator 1 can also be an electromagnetic relay or an electromagnetic switch or the like. In this example, the control panel 8 is divided into an upper layer and a lower layer. A first opening 14 is provided between the upper layer and the lower layer 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 pedestal 12. The mounting surface 15 is a surface configured such that the normal direction faces the front-rear direction. That is, the mounting surface 15 is arranged parallel to the vertical direction and the left-right direction. The mounting surface 15 is arranged on the back side inside the cabinet 10, for example. The mounting surface 15 is arranged at a position above the first opening 14. The electromagnetic contactor 13 is mounted on the front side of the mounting surface 15 by a fastener 16 such as a screw or a bolt, for example. The electromagnetic contactor 13 is arranged in the upper layer of the control panel 8.

[0039] The electromagnetic contactor 13 is housed in a cover 17 inside the cabinet 10. The cover 17 is, for example, a soundproof cover that suppresses the propagation of noise generated from the electromagnetic contactor 13 into the car 6 or the like. In this example, the cover 17 is arranged at a position 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 or the like. The cover 18 can also be detachable. A second opening 19 is provided on the front surface of the cover 17. The second opening 19 is an opening that opens forward. In normal times, the second opening 19 is closed by the cover 18.

[0040] In this example, the mounting pedestal 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 arranged on the front side of the mounting pedestal 12 with the left-right direction as the length direction. The rear beam 21 is arranged on the rear side of the mounting pedestal 12 with the left-right direction as the length direction. One side beam 22 is arranged on the left side of the mounting pedestal 12 with the front-rear direction as the length direction. The other side beam 22 is arranged on the right side of the mounting pedestal 12 with the front-rear direction as the length direction. The front beam 20, the rear beam 21, and the two side beams 22 are arranged in the same horizontal plane. The front beam 20, the rear beam 21, and the 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. In addition, 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 It is a structural diagram of the control panel 8 of Embodiment 1 observed from the front-rear direction.

[0042] In the electromagnetic contactor 13, the lead wire 23 is led out from the lower surface. In this example, the lower surface of the cover 17 that houses the electromagnetic contactor 13 is open in a manner that allows the lead wire 23 to be led out. The lead wire 23 passes from the upper layer to the lower layer of the control panel 8 through the first opening 14, for example. The lead wire 23 is connected to the lower device 24 arranged on the lower layer of the control panel 8, for example.

[0043] In this example, the mounting pedestal 12 has two vertical columns 25 on the front surface of the control panel 8. Each vertical column 25 is arranged with the up-down direction as the length direction. One vertical column 25 is arranged on the left side of the front surface of the mounting pedestal 12. The other vertical column 25 is arranged on the right side of the front surface of the mounting pedestal 12. The door 11 of the cabinet 10 is mounted on the two vertical columns 25 of the mounting pedestal 12 and the front frame, etc., for example.

[0044] Figure 4 It is a structural diagram of the control panel 8 of Embodiment 1 observed from the up-down direction.

[0045] The length L1 in the front-rear direction 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 length L2 in the front-rear direction of the mounting pedestal 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 length L2 in the front-rear direction of the mounting pedestal 12 is the sum of the length L1 in the front-rear direction of the first opening 14, the width L3 in the front-rear direction of the rear beam 21, and the width L4 in the front-rear direction of the front beam 20.

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

[0047] The left - right width L7 of each vertical column 25 is longer than the left - right width L8 of each side beam 22. The front - rear width L9 of each vertical column 25 is longer than the front - rear width L4 of the front beam 20. Therefore, when each vertical column 25 is projected onto the horizontal plane, that is, within the horizontal projection plane, it protrudes from the side beam 22 toward the first opening 14 side. That is, each vertical column 25 is an example of a protruding portion.

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

[0049] When replacing the existing electromagnetic contactor 13 with a new one, the operator needs to perform the replacement operation above the first opening 14. At this time, the operator needs to stand in a position in front of the front end of the control panel 8 and perform the operation in such a way that the hand reaches behind the control panel 8. During this period, the operator needs to pay attention to prevent the electromagnetic contactor 13 or its accessories, etc., which are heavy objects, from falling from the first opening 14 and colliding with the lower - side equipment 24, etc. below. Therefore, in order to improve the workability of the replacement operation and reduce the work burden of the operator, a replacement auxiliary tool is used in the replacement operation of the electromagnetic contactor 13.

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

[0051] The replacement auxiliary tool 26 includes a closing plate 27 and a pair of bars 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 in shape. The outer periphery of the closing plate 27 includes a front edge 29, a rear edge 30, a side edge 31a, and a side edge 31b. In this example, the closing plate 27 is rectangular with a notch 32 provided on the side edge 31a. The front edge 29 is the edge on the front - end side of the closing plate 27. The rear edge 30 is the edge on the rear - end side of the closing plate 27. The side edge 31a is the edge on the left - end side of the closing plate 27. The side edge 31b is the edge on the right - end side of the closing plate 27. The front edge 29 and the rear edge 30 are opposite sides that are parallel to each other. The side edge 31a and the side edge 31b are opposite sides that are parallel to each other. InFigure 5 In [description], the closing plate 27 is shown as viewed from the upper surface side. On the upper surface of the closing plate 27, markings 33 are attached along the periphery. The markings 33 are, for example, labels with colors such as yellow that can draw attention or patterns, etc. In this example, the outer periphery of the closing plate 27 is chamfered. The lower surface of the closing plate 27 is a flat plane.

[0053] The length of the closing plate 27 in the front-rear direction 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 length L1 of the first opening 14 in the front-rear direction. In this example, the length X1 between the front edge 29 and the rear edge 30 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, that is, the sum of the length L1 of the first opening 14 in the front-rear direction and the width L4 of the front beam 20 in the front-rear direction. The length X1 between the front edge 29 and the rear edge 30 may also be longer than the length L2 of the mounting base 12 in the front-rear direction.

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

[0055] The cutout 32 is provided in a shape along the protruding portion that protrudes 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 along the horizontal cross-section of the vertical column 25 as an example of the protruding portion. For example, when the vertical column 25 has a quadrangular prism shape, the cutout 32 is provided in a quadrilateral shape.

[0056] Each bar 28 is a rod-shaped member that is long in one direction. In this example, each bar 28 is a square timber with a quadrangular prism shape. Each bar 28 is, for example, made of wood. The length X3 of each bar 28 in the length direction is longer than the length X1 between the front edge 29 and the rear edge 30 of the closing plate 27. In this example, the lengths of the pair of bars 28 are equal to each other. In addition, the lengths of the pair of bars 28 may also be different from each other. At this time, the length of the shorter bar 28 in the length direction may also be shorter than the length X2 between the side edges 31a and 31b of the closing plate 27.

[0057] Next, use Figures 6 to 10 , to illustrate an example of the replacement operation of the electromagnetic contactor 13. The operator can perform the steps of this replacement operation in a permutable order within a possible range, and can also perform the steps of this replacement operation in parallel within a possible range.

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

[0059] Figure 9 This is a view showing the electromagnetic contactor 13 being carried during the replacement operation using the replacement assist tool 26 of Embodiment 1.

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

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

[0062] Next, the operator inserts the closing plate 27 from the front under the existing electromagnetic contactor 13 and the hood 17. At this time, the operator inserts the closing plate 27 with the rear edge 30 thereof facing the rear of the control panel 8. The operator places the rear edge 30 of the closing plate 27 on the rear beam 21 of the mounting bracket 12. At this time, the operator can also bring the closing plate 27 closer to the left side of the control panel 8 so that the side edge 31a of the closing plate 27 is disposed above the side beam 22 of the mounting bracket 12. Since a cutout 32 having the shape of the horizontal cross-section of the vertical column 25 is provided at the side edge 31a of the closing plate 27, the operator can bring the closing plate 27 closer to the left side without being obstructed by the vertical column 25. Then, the operator places the front end portion of the closing plate 27 on the front beam 20 of the mounting bracket 12. In this way, the operator places the closing plate 27 so as to span between the front edge and the rear edge of the front side of the first opening 14. Thereby, the first opening 14 below the existing electromagnetic contactor 13 is closed by the closing plate 27. At this time, the front edge 29 of the closing plate 27 protrudes forward beyond the front end of the front beam 20 of the mounting bracket 12. In addition, the side edge 31a of the closing plate 27 is placed on the side beam 22 which is the left edge of the first opening 14.

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

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

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

[0066] Next, with the installed electromagnetic contactor 13 placed on the upper surface of the closing plate 27, the operator raises the front edge 29 of the closing plate 27 that extends forward beyond the front end of the front beam 20 of the mounting gantry 12. At this time, the operator can also move the closing plate 27 closer to the right side of the control panel 8 so that the side edge 31a of the closing plate 27 moves away from the side beam 22 of the mounting gantry 12. The operator holds the side edge 31a side of the closing plate 27 and raises the installed electromagnetic contactor 13 and the closing plate 27. Here, the side edge 31b side of the closing plate 27 is raised by another operator. The operator removes the installed electromagnetic contactor 13 from the upper surface of the closing plate 27. At this time, the operator can also move the closing plate 27 closer to the front side in such a way that the flat lower surface of the closing plate 27 slides on the front beam 20. Since the load of the closing plate 27 and the installed electromagnetic contactor 13 is supported by the front beam 20 and the closing plate 27 is close to the operator, it is easy for the operator to raise the closing plate 27 and the installed electromagnetic contactor 13.

[0067] Next, the two operators carrying the closing plate 27 and the installed electromagnetic contactor 13 stand with the pair of bars 28 sandwiched in a direction perpendicular to the longitudinal direction of each bar 28. The two operators move the closing plate 27 onto the pair of bars 28 arranged on the ground with the installed electromagnetic contactor 13 placed on the upper surface of the closing plate 27. At this time, the closing plate 27 is moved onto the pair of bars 28 such that the side edge 31a and the side edge 31b of the closing plate 27 are along the longitudinal direction of each bar 28. Since there are no bars 28 under the side edges 31a and 31b held by the operator, the operator can easily move the closing plate 27 onto the pair of bars 28.

[0068] Next, the operator removes the installed electromagnetic contactor 13 from the upper surface of the closing plate 27. Then, the operator places the newly installed electromagnetic contactor 13 on the upper surface of the closing plate 27.

[0069] Next, two operators stand across a pair of bars 28 in a direction perpendicular to the longitudinal direction of each bar 28. With the newly installed electromagnetic contactor 13 placed on the upper surface of the closing plate 27, the two operators lift the closing plate 27 from above the pair of bars 28 arranged on the ground. With the newly installed electromagnetic contactor 13 placed on the upper surface of the closing plate 27, the operators place the closing plate 27 so that it is spanned between the front edge and the rear edge of the first opening 14. At this time, the operators can also move the closing plate 27 closer to the rear side in such a way that the flat lower surface of the closing plate 27 slides on the front beam 20. In addition, the operators can move the closing plate 27 closer to the left side of the control panel 8 so that the side edge 31a of the closing plate 27 is positioned above the side beam 22 of the mounting bracket 12.

[0070] Next, the operator stands the newly installed electromagnetic contactor 13 upright from the front above the upper surface of the closing plate 27. At this time, the operator can also use the lower end of the newly installed electromagnetic contactor 13 as a fulcrum and stand the newly installed electromagnetic contactor 13 upright from the front.

[0071] Next, as Figure 10 shown, the operator arranges one bar 28 above the upper surface of the closing plate 27 in the left - right direction. At this time, the operator arranges the bar 28 in front of the electromagnetic contactor 13 that has been stood upright from the front. When the lengths of the pair of bars 28 are different from each other, the operator arranges the shorter bar 28 above the upper surface of the closing plate 27 in the left - right direction. Then, the operator arranges the other bar 28 in the front - rear direction above the bar 28 arranged in the left - right direction. The operator inserts the rear end of the bar 28 arranged on the upper side under 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 bar 28 arranged on the upper side up and down. That is, the operator uses the bar 28 arranged on the upper side as a lever with the part in contact with the lower - side bar 28 as the fulcrum, the front end as the force point, and the rear end as the point of application to adjust the vertical position of the newly installed electromagnetic contactor 13. 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 on the mounting surface 15 by tightening the fastener 16.

[0073] Next, the operator removes the pair of bars 28 and the closing plate 27 from the mounting bracket 12.

[0074] Next, the operator passes the lead wire 23 drawn 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 inspections, etc., the operator closes the cover 18 of the cover 17 and the door 11 of the cabinet 10.

[0075] As described above, the replacement auxiliary tool 26 of the first embodiment is used for the replacement operation of the electromagnetic contactor 13 of the elevator 1. The electromagnetic contactor 13 is installed on the front side of the mounting surface 15 included in the mounting frame 12. The mounting surface 15 is a surface parallel to the vertical and horizontal directions and perpendicular to the front-rear direction. The mounting frame 12 forms the edge of the first opening 14 that opens in the vertical direction below the mounting surface 15. The replacement auxiliary tool 26 includes a closing plate 27. The closing plate 27 has a plate shape 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 length in the front-rear direction of the first opening 14. The rear edge 30 of the closing plate 27 is placed on the rear edge of the first opening 14. The front edge 29 of the closing plate 27 is placed on the front edge of the first opening 14. The closing plate 27 is installed between the front edge of the first opening 14 and the rear edge of the first opening 14 at a position below the electromagnetic contactor 13.

[0076] In addition, in the replacement method of the first embodiment, the closing plate 27 is placed so as to be installed between the front edge of the first opening 14 and the rear edge of the first opening 14 at a position below the existing electromagnetic contactor 13. Then, the existing electromagnetic contactor 13 is removed from the mounting surface 15. Then, the existing electromagnetic contactor 13 is tilted forward and placed on the upper surface of the closing plate 27. Then, in a state where the existing electromagnetic contactor 13 is placed on the upper surface of the closing plate 27, the closing plate 27 is removed from the mounting frame 12. Then, the existing electromagnetic contactor 13 is removed from the upper surface of the closing plate 27, and the newly installed electromagnetic contactor 13 is placed on the upper surface of the closing plate 27. Then, in a state where the newly installed electromagnetic contactor 13 is placed on the upper surface of the closing plate 27, the closing plate 27 is placed so as to be installed between the front edge of the first opening 14 and the rear edge of the first opening 14. Then, above the upper surface of the closing plate 27, the newly installed electromagnetic contactor 13 is erected from the front. Then, the newly installed electromagnetic contactor 13 is installed on the mounting surface 15. Then, the closing plate 27 is removed from the mounting frame 12.

[0077] With such a structure, the first opening 14 below the electromagnetic contactor 13 is closed by the closing plate 27, so it is not easy for the electromagnetic contactor 13 or its accessories, etc. to fall from the first opening 14. Thereby, the work burden on the operator is reduced. In addition, since the electromagnetic contactor 13 as a heavy object is carried out from the mounting frame 12 in a state of being tilted on the closing plate 27, the workability of the replacement operation is improved.

[0078] In addition, the front edge of the front side of the first opening 14 is the front beam 20 of the mounting pedestal 12. The length between the front side 29 and the rear side 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 such a structure, the front side 29 of the closing plate 27 protrudes forward beyond the front end of the front beam 20 of the mounting pedestal 12. Therefore, an operator can more easily lift the closing plate 27 carrying the installed electromagnetic contactor 13 from the mounting pedestal 12. As a result, the workability of the replacement work is further improved.

[0080] In addition, the edge on one of the left and right sides of the first opening 14 is the side beam 22 of the mounting pedestal 12. The mounting pedestal 12 has a vertical column 25 that protrudes toward the first opening 14 side in the horizontal projection plane. In the closing plate 27, a cutout 32 having a shape along the vertical column 25 in the horizontal projection plane is provided in a side edge 31a perpendicular to the front side 29 and the rear side 30. The side edge 31a is placed on the side beam 22.

[0081] With such a structure, the side of the first opening 14 is also closed by the closing plate 27. Therefore, it is more difficult for the electromagnetic contactor 13 or its accessories to fall, and the work burden on the operator is further reduced. In addition, the three sides of the front side 29, the rear side 30, and the side edge 31a of the closing plate 27 are placed on the mounting pedestal 12. Therefore, the closing plate 27 is more stably supported. As a result, the workability of the replacement work is further improved.

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

[0083] With such a structure, the cabinet 10 and the various parts of the control panel 8 such as the electromagnetic contactor 13 are not easily damaged by the closing plate 27. In addition, the outer periphery of the closing plate 27 is not easily caught, and thus the work burden on the operator who operates the closing plate 27 is further reduced.

[0084] In addition, the replacement auxiliary tool 26 includes a pair of bars 28. The length in the longitudinal direction of each bar 28 is longer than the length between the front side 29 and the rear side 30 of the closing plate 27.

[0085] In addition, in the replacement method of using the replacement auxiliary tool 26, in a state where the installed electromagnetic contactor 13 is placed on the upper surface of the closing plate 27, the closing plate 27 is moved from the mounting pedestal 12 onto a pair of bars 28 arranged in parallel. After the newly installed control device is erected from the front above the upper surface of the closing plate 27, one bar 28 is arranged in the left - right direction above the upper surface of the closing plate 27. The other bar 28 is arranged in the front - rear direction thereon. The rear end of the upper bar 28 is arranged below the newly installed electromagnetic contactor 13. By moving the front end of the upper bar 28 up and down, the vertical position of the newly installed electromagnetic contactor 13 is adjusted. Then, the newly installed electromagnetic contactor 13 is installed on the mounting surface 15. Then, the pair of bars 28 and the closing plate 27 are removed from the mounting pedestal 12.

[0086] With such a structure, the operator can more easily place the closing plate 27 temporarily on the ground or the like. In addition, the pair of bars 28 can be used as levers to adjust the position of the electromagnetic contactor 13 as a heavy object, so the workload of the operator is further reduced. In addition, the bar 28 used for temporarily placing the closing plate 27 can also serve as the bar 28 used as a lever. Thus, the number of tools brought into the work site is suppressed, and the workload of the operator is reduced.

[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 edge 30 of the closing plate 27 may also be shorter than the length in the left - right direction of the second opening 19. 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 portion of the cover 17 is located below the first opening 14 and the lower surface of the cover 17 is not open, etc., 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 may also be a part other than the beam of the mounting pedestal 12. The edge of the first opening 14 may also be a bolt or rib protruding toward the inside of the cabinet 10, etc. The edge of the first opening 14 on which the closing plate 27 is placed may also be a part of the cabinet 10 such as the cabinet 10 or a part of the equipment inside the cabinet 10 such as the cover 17.

[0088] Embodiment 2.

[0089] In Embodiment 2, the points different from the examples disclosed in Embodiment 1 are specifically described in detail. Regarding the features not described in Embodiment 2, any features in the examples disclosed in Embodiment 1 can be adopted.

[0090] Figure 11 It is a perspective view of the replacement auxiliary tool 26 of Embodiment 2.

[0091] The closing plate 27 is provided with handles 34 on the left and right sides of the upper surface. The handles 34 are mounted from the upper surface side. The handles 34 are, for example, in the shape of a semi-circle, semi-ellipse, semi-oval or trapezoid. The handles 34 do not protrude towards the lower surface of the closing plate 27. That is, the lower surface of the closing plate 27 is a flat plane. The handles 34 are mounted on the upper surface of the closing plate 27 by welding or the like, for example. In addition, the handles 34 may be provided only on one of the left and right sides of the closing plate 27.

[0092] With such a structure, an operator can more easily lift the closing plate 27 carrying the existing electromagnetic contactor 13 from the mounting stand 12 by gripping the handles 34. Therefore, the workability of the replacement operation is further improved. In addition, since the lower surface of the closing plate 27 is flat, the operator can easily move the closing plate 27 forward and backward in a manner of sliding on the front beam 20. Since the closing plate 27 and the load of the existing electromagnetic contactor 13 are deposited on the front beam 20 while the closing plate 27 is moved forward and backward, the working burden of the operator is further reduced.

[0093] Industrial applicability

[0094] The replacement assisting tool and the replacement method of the present disclosure can be applied to the replacement operation of the control equipment of an elevator.

[0095] Reference numeral description

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

Claims

1. A replacement auxiliary tool, which is a replacement auxiliary tool for a control device of an elevator. The control device of the elevator is installed on the front side of an installation surface in an installation frame. The installation frame includes the installation surface parallel to the vertical and horizontal directions and perpendicular to the front-rear direction, and forms an edge of a first opening that opens in the vertical direction below the installation surface. The replacement auxiliary tool includes a closing plate, which is in a plate shape with a front edge and a rear edge parallel to each other. The length between the front edge and the rear edge is longer than the length in the front-rear direction of the first opening. The rear edge is placed on the rear-side edge of the first opening, and the front edge is placed on the front-side edge of the first opening. The closing plate is installed between the front-side edge and the rear-side edge of the first opening at a position below the control device.

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

3. The replacement auxiliary tool 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 edge is shorter than the length in the left-right direction of the second opening.

4. The replacement auxiliary tool according to any one of claims 1 to 3, wherein the left or right edge of the first opening is the side beam of the installation frame, the installation frame has a protruding portion that protrudes from the side beam toward the first opening side in the horizontal projection plane, in the closing plate, a cutout along the shape of the protruding portion in the horizontal projection plane is provided on a side edge perpendicular to the front edge and the rear edge, the side edge is placed on the side beam.

5. The replacement auxiliary tool according to any one of claims 1 to 4, wherein the outer periphery of the closing plate is chamfered.

6. The replacement auxiliary tool according to any one of claims 1 to 5, wherein the closing plate is provided with a handle installed from the upper surface side on one or both sides of the upper surface, the lower surface of the closing plate is flat.

7. The replacement auxiliary tool according to any one of claims 1 to 6, wherein the replacement auxiliary tool includes a pair of bars, and the length in the length direction of the pair of bars is longer than the length between the front edge and the rear edge.

8. A replacement method, which is a replacement method of the control device using the replacement auxiliary tool according to any one of claims 1 to 7, including the following steps: Place the closing plate so that it is installed between the front-side edge and the rear-side edge of the first opening at a position below the existing control device; Remove the existing control device from the installation surface; Tilt the existing control device forward and place it on the upper surface of the closing plate; While the existing control device is placed on the upper surface of the closing plate, carry the closing plate down from the installation frame. Remove the installed control device from the upper surface of the closing plate and place the newly installed control device on the upper surface of the closing plate; With the newly installed control device placed on the upper surface of the closing plate, place the closing plate so as to be spanned between the front edge and the rear edge of the first opening; Stand up the newly installed control device from the front above the upper surface of the closing plate; Install the newly installed control device on the mounting surface; And Remove the closing plate from the mounting gantry.

9. A replacement method, which is a replacement method of the control device using the replacement auxiliary tool according to claim 7, comprising the following steps: Place the closing plate so as to be spanned between the front edge and the rear edge of the first opening at a position lower than the installed control device; Remove the installed control device from the mounting surface; Tilt the installed control device forward and place it on the upper surface of the closing plate; With the installed control device placed on the upper surface of the closing plate, move the closing plate from the mounting gantry onto the pair of bars arranged in parallel; Remove the installed control device from the upper surface of the closing plate and place the newly installed control device on the upper surface of the closing plate; With the newly installed control device placed on the upper surface of the closing plate, place the closing plate so as to be spanned between the front edge and the rear edge of the first opening; Stand up the newly installed control device from the front above the upper surface of the closing plate; Arrange one of the pair of bars in the left-right direction above the upper surface of the closing plate, arrange the other of the pair of bars in the front-rear direction thereon, arrange the rear end of the upper one of the pair of bars below the newly installed control device, and adjust the vertical position of the newly installed control device by moving the front end of the upper one of the pair of bars up and down; Install the newly installed control device on the mounting surface; And Remove the pair of bars and the closing plate from the mounting gantry.

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