Lift for replacing door of electrical equipment

Abstract

To easily perform door replacement work by moving a door to an arbitrary location while holding the door upright.SOLUTION: A door 2 is replaced relative to electrical equipment with the door 2 in a vertical position by attaching mounting parts to a lift. The mounting parts are composed of an arm 3 that can clamp the door 2 across the width of the door 2 and move in the thickness direction of the door, a guide 4 that is attached to a floor plate 5 laid on a bucket 22 of the elevator and supports the lower part of the door 2, and a rope 6 that restrains the movement of the door 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to door replacement elevators for electrical equipment. [Background technology]

[0002] The switchgear has doors on the front and back of the housing. The main role of the doors is to open and close the switchgear for the purpose of inspecting the internal components installed in the switchgear, and they are locked so that they cannot be opened or closed freely unless necessary. The weight of the doors varies depending on the specifications of the switchgear, but is generally around 20 to 50 kg, and the door replacement work basically requires the use of equipment with a mechanism for raising and lowering heavy objects, such as a crane. However, if there is no equipment for raising and lowering heavy objects, such as a crane, the work must be done manually. For these reasons, the installation and replacement of doors is done by using a crane at the switchgear installation site or by manual labor.

[0003] A conventional lifter used as equipment for raising and lowering things includes a cart, a support part arranged perpendicular to the cart, and a rectangular base arranged perpendicular to the support part and capable of being raised and lowered, with a plate-like upper surface serving as a mounting surface for placing an object on it and the sides facing the support part being the front, rear, left and right sides, and the mounting surface of the base is equipped with a guide shaped to protrude from the mounting surface arranged along the front side, and two protrusions arranged opposite each other and parallel to the direction of extension of the left and right sides (see Patent Document 1).

[0004] Also, a gantry-type traveling crane includes a cart with wheels and guide wheels that can travel along the power generation equipment, a running path for the cart installed on the floor on both sides of the power generation equipment, leg members installed on the cart, a main girder with a crane rail installed between the leg members spanning the power generation equipment, a hoist that travels horizontally along the crane rail, and a control panel that controls the operation of the crane, the running path consisting of a track plate material along which the wheels travel and a guide plate along which the guide wheels fixed to the track plate material travel, the leg members are extendable and retractable, and the crane rails extend horizontally outward from both ends of the main girder to allow inspection of ancillary equipment (see Patent Document 2).

[0005] There was also a crane which was equipped with a gantry traveling crane body which was detachably assembled using a span member, a pair of leg members each having one end pivotally supported on both ends of the span member, and a runnable connecting member pivotally supporting the other ends of the leg members, a crane control panel, a guide plate attached to the traveling section of the gantry traveling crane body, and a sensor attached to the connecting member which detects the traveling position of the guide plate (see Patent Document 3).

[0006] Furthermore, there is a telescopic leg that can reliably prevent rattling, and a gantry traveling crane that uses this telescopic leg (see Patent Document 4). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 6552778 [Patent Document 2] Patent No. 5583642 [Patent Document 3] Patent No. 2788706 [Patent Document 4] Patent No. 5997192 Summary of the Invention [Problem to be solved by the invention]

[0008] The above cranes are classified into two types. One is a fixed crane located at the switchgear installation location, and the other is a gantry crane that can be moved to any location. However, there are situations where the former has limitations due to environmental factors, and the latter has limitations due to its size. Examples of such situations include the former when there is no crane at the switchgear installation location, and the latter when it is not possible to lift the door high enough to secure it.

[0009] Some switchgears are over 2m high, so the highest point of a gantry crane must be at least 2m high. These conditions may limit the use of the above cranes. In addition, cranes only have the function of suspending objects, so the suspended object is left hanging. Therefore, when installing a door, it is necessary to support the door artificially while fixing it. Furthermore, manual work may place an excessive burden on the worker, and the door may even fall during the work.

[0010] The present disclosure discloses technology for solving the problems described above, and aims to provide a door replacement elevator for electrical equipment that can move the door to any location while holding it upright, making it easy to perform door replacement work. [Means for solving the problem]

[0011] The door replacement elevator of the present disclosure is a door replacement operation for an electrical device performed with the door in a vertical position by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; a guide attached to a floor plate laid on a bucket of the elevator and supporting a lower portion of the door; It consists of a rope for restraining the movement of the door. In addition, the present disclosure also provides a door replacement elevator for electrical equipment, which is provided with a mounting part attached to the elevator, and which performs door replacement work on electrical equipment with the door in a vertical position, The mounting part includes a first rope for suspending the door from a suspension bracket support; The door movement limiting frame is attached to the hanging metal support base and serves to limit the lateral movement of the door. In addition, the present disclosure also provides a door replacement elevator for electrical equipment, which is provided with a mounting part attached to the elevator, and which performs door replacement work on electrical equipment with the door in a vertical position, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; It is composed of electromagnets that clamp the door from both sides with electromagnetic force and fix the door in place. Further, the present disclosure provides a door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; It is composed of a tool that can apply force to both sides of the door. Effect of the Invention

[0012] According to the electrical equipment door replacement elevator of the present disclosure, the door can be moved to any location while being held upright, making it easy to perform door replacement work. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a side view showing the elevator for replacing a switchgear door according to the first embodiment. [Diagram 2]FIG. 2 is a plan view showing the elevator for replacing a switchgear door according to the first embodiment. [Diagram 3] FIG. 2 is a perspective view showing an arm in the elevator for replacing a switchgear door according to the first embodiment. [Figure 4] FIG. 2 is a front view showing an arm support base in the elevator for replacing a switchgear door according to the first embodiment. [Diagram 5] FIG. 2 is a perspective view showing a guide in the elevator for replacing a switchgear door according to the first embodiment. [Figure 6] FIG. 2 is a perspective view showing a stopper in the elevator for replacing a switchgear door according to the first embodiment. [Figure 7] FIG. 2 is a perspective view showing a frame of the elevator for replacing a switchgear door according to the first embodiment. [Figure 8] FIG. 11 is a side view showing a switchgear door replacement elevator according to a second embodiment. [Figure 9] FIG. 11 is a perspective view showing a guide in a lift for replacing a switchgear door according to a second embodiment. [Figure 10] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a third embodiment. [Figure 11] FIG. 11 is a plan view showing a switchgear door replacement elevator according to a third embodiment. [Figure 12] FIG. 11 is a perspective view showing a fixing base in a lift for replacing a switchgear door according to a third embodiment. [Figure 13] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Figure 14] FIG. 11 is a plan view showing a switchgear door replacement elevator according to a fourth embodiment. [Figure 15] FIG. 11 is a side view showing a hanging metal fitting support base in a switchgear door replacement elevator according to embodiment 4. [Figure 16] FIG. 11 is a front view showing a hanging metal fitting support base in a switchgear door replacement elevator according to embodiment 4. [Figure 17] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Figure 18] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Figure 19] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Figure 20] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Figure 21] 20 is an enlarged side view showing part D in FIG. 19. [Figure 22] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Diagram 23] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Figure 24] FIG. 11 is a plan view showing a switchgear door replacement elevator according to a fourth embodiment. [Diagram 25] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Figure 26] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Figure 27] 25 is an enlarged plan view showing a portion E in FIG. 24. FIG. [Figure 28] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Figure 29] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Diagram 30] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Diagram 31] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Diagram 32] FIG. 11 is a side view showing a lift for replacing a switchgear door according to a fourth embodiment. [Diagram 33] FIG. 11 is a front view showing a switchgear door replacement elevator according to a fourth embodiment. [Diagram 34] FIG. 13 is a side view showing a switchgear door replacement elevator according to embodiment 5. [Diagram 35]FIG. 13 is a plan view showing a switchgear door replacement elevator according to a fifth embodiment. [Diagram 36] FIG. 13 is a side view showing a switchgear door replacement elevator according to embodiment 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Embodiment 1 In the following description, a door replacement elevator for a metal-enclosed switchgear will be described, but the invention can also be applied to other large electrical equipment, not limited to switchgear. FIG. 1 is a side view showing a door replacement elevator for a switchgear according to embodiment 1, FIG. 2 is a plan view showing the door replacement elevator when attaching a door to a switchgear, FIG. 3 is an oblique view showing an arm in FIG. 1, FIG. 4 is a front view showing the arm support base in FIG. 1, FIG. 5 is an oblique view showing a guide, and FIG. 6 is an oblique view showing a stopper.

[0015] The door replacement elevator in the first embodiment is mainly composed of an arm 3, a guide 4, a floor board 5 with a rubber sheet, a rope 6, an arm support frame 9, and a pole 13 as attachment parts to a lifter (elevator) 1. The configuration of each attachment part will be described below. As shown in Fig. 3, the arm 3 has a shape that extends across the width direction Y of the door 2, and holds the door 2 by sandwiching it from both sides. A rubber sheet 12A is attached to the inside of the arm 3 so as to function as a cushioning material between the door 2 and the arm 3 when the door 2 is sandwiched by the arm 3 across the width direction Y of the door 2. Furthermore, an arm support frame 9 is attached to the lifter (elevator) 1, and when the arm 3 is fixed, the arm 3 is fixed to the arm support frame 9 via a pole 13. The arm support frame 9 is then directly fixed to the lifter (elevator) 1 with bolts to hold the door 2 upright. Furthermore, the arm 3 is used while inserted into the cylindrical pole 13. This allows the arm 3 to move in the thickness direction (thickness direction of the door 2, in the direction indicated by the arrow X in Figure 2), and the arm 3 can be adjusted to any position depending on the thickness of the door 2.

[0016] The guide 4 has a shape as shown in Fig. 5, and is directly fixed to the lifter 1 like the arm 3, and supports the lower part of the door 2. In addition, a rubber sheet 12B is provided at the portion of the guide 4 where the door 2 passes to prevent the door 2 from slipping. The floor board 5 with the rubber sheet attached is placed on the bucket 22 of the lifter 1 before the arm support frame 9, arm 3 and guide 4 are fixed, and the arm 3 and guide 4 are fixed together to the lifter 1. Here, the bucket 22 is a plate placed under the floor board 5. Also, a rubber sheet is provided at the position where the door 2 is fixed to the elevator. The rope 6 is fixed to the eyebolt 8 attached to the arm support frame 9 by providing fixing metal fittings such as carabiners on both ends or by directly attaching the rope 6 to the eyebolt 8. The movement of the door 2 is restricted by adjusting the length of the rope 6.

[0017] The method of attaching each mounting part will be described below. First, the floor plate 5 with the rubber sheet is placed on the bucket 22 of the lifter 1 and moved to the mounting position. After that, the arm support frame 9 and the guide 4 are fixed together with the floor plate 5 with the rubber sheet. In this way, the guide 4 is attached to the floor plate 5.

[0018] Next, a method for replacing the door 2 will be described. As shown in FIG. 1, with the door 2 fixed, the door 2 is approached while being kept vertical to the front of the switchgear 10, and the lifter 1 is stopped. The door 2 is then raised or lowered to a height at which it can be fixed by the hinge 14. The fixing holes of the hinge 14 attached to the switchgear 10 are aligned with the holes of the door 2, and the door 2 is fixed to the switchgear 10. After the door 2 is fixed to the switchgear 10, the door 2 is removed from the lifter 1, completing the fixing of the door 2. When removing the door 2 from the switchgear 10, the door 2 can be removed by performing the steps in reverse to those described above.

[0019] The mounting parts are attached according to the above-mentioned configuration, and the door 2 is moved along the guide 4 until it comes into contact with the frame 11 that is located at the bottom of the arm support frame 9 shown in Figures 1, 2 and 4 and that comes into contact when the door 2 is fixed. The frame 11 is a part of the arm support frame 9 and has the same length as the pole 13. The frame 11 is attached to the arm support frame 9 with bolts. FIG. 7 is a perspective view showing the frame 11 to which a rubber sheet 12E is attached.

[0020] In this state, by clamping the door 2 with the arms 3 from both sides and providing a stopper 7 at the bottom of the door 2, the door 2 can be made to stand upright as shown in Figures 1 and 2. As shown in Figure 3, the tip of the arm 3 is formed into a hook shape 3A, and the door 2 is surrounded by ropes 6 at two points, top and bottom, to restrict movement of the door 2 in the direction along the guide 4 and fix the door 2. As shown in Figure 3, the hook shape 3A at the tip of the arm 3 has an edge located inside the surface where the door 2 and the arm 3 meet. This makes it possible to restrict movement of the door 2 in the width direction Y shown in Figure 2 when the door 2 is fixed to the elevator. In addition, a rubber sheet is provided on the contact surface between the door 2 and the elevator to prevent slipping, like a floor panel 5 with a rubber sheet, so that the door 2 can be moved in an upright position.

[0021] As described above, when replacing the door, the installation parts can be attached to the lifter to perform the door replacement work, and there is no need to prepare any other equipment with a lifting function. After the door is fixed, the door can be raised, lowered, or moved in the same procedure as when using the original lifter, making the work easy to perform. Furthermore, the elevator of this embodiment has a mechanism for lifting the object placed in the bucket from below, and unlike a crane that suspends the object, it can lift the object to a height sufficient to fix it.

[0022] Another feature of the door replacement is that it can be fixed by clamping it with an arm and rope, etc., and can be moved without dropping it from the elevator. In addition, since the door is held upright, it is possible to approach the switchgear in this state, lift the door with the elevator to the required height, and move the door to the hinge position of the switchgear to perform the door replacement work.

[0023] In addition, by attaching and detaching the mounting parts, a single elevator can be used for either door replacement work or as an elevator, its original purpose, depending on the application. That is, by attaching and detaching the mounting parts, it can have two functions: as an elevator for door replacement work and as a lifter for transporting or inserting main circuit equipment. Some main circuit equipment such as circuit breakers are mobile with wheels, and a lifter can be used to insert or remove such mobile equipment into or from the designated locations on the switchgear.

[0024] Furthermore, instead of having a structure where the mounting parts are removable, each mounting part can be fixed by welding it directly to the lifter. This strengthens the strength and allows it to be used for heavy doors, making it a lifter exclusively for doors. The mounting parts can be attached and detached with bolts, and it is possible to add the function of a standard elevator in addition to its function as an elevator for door replacement. However, there is a possibility that the strength is insufficient for heavy doors. In other words, it is possible that the door may fall over due to the weight being applied to the arm or arm support frame during movement. Therefore, in order to improve the strength, each mounting part is fixed by welding, and it can be used as an elevator exclusively for door replacement.

[0025] Embodiment 2 Fig. 8 is a side view showing the elevator when attaching a door to the switchgear in embodiment 2, and Fig. 9 is a perspective view showing the guide. The elevator in this embodiment has an arm 3, an arm support frame 9, a pole 13, and a guide 15 as attachment parts. Guide 15 has a shape as shown in Fig. 9, and unlike guide 4 in embodiment 1, has an L-shaped bent portion having the same length as the length of door 2 in the width direction Y (see Fig. 8), thereby playing a role in preventing door 2 from tipping over. Also, a rubber sheet 12D is provided at the portion of guide 15 through which door 2 passes. Also, by providing holes 24 at intervals of about 50 mm in arm support frame 9, it becomes possible to attach arm 3 at any height position.

[0026] The operation in this embodiment is similar to that described in the first embodiment. Furthermore, in this embodiment, by providing holes 24 at intervals of 50 mm in the arm support frame 9, it becomes possible to attach the arm 3 at any height position. However, there are conditions for the position at which the arm 3 is attached to the arm support frame 9. That is, it is necessary to exclude cases where the height of the hinge of the door 2 and the height of the arm 3 are equal. By attaching the arm 3 at any position other than this condition, it is possible to obtain the same effect as in the first embodiment, and also to adjust the position of the arm 3 in the height direction, so that the door 2 can be sandwiched by the arm 3 at any position depending on the height of the door 2 and the position of the control device attached to the door 2.

[0027] Embodiment 3 In this embodiment, the pallet is lifted up using forks such as a forklift. Fig. 10 is a side view showing the fixing frame in a state where the door is fixed when the door is fixed using a forklift, Fig. 11 is a plan view showing the fixing frame in a state where the door is fixed using a forklift, and Fig. 12 is a perspective view showing the fixing base in Fig. 10. As shown in Fig. 10, the arm 3, the guide 4, and the arm support frame 9 can be attached to the fixing base 16, similarly to the first embodiment.

[0028] The arm 3, guide 4, and arm support frame 9 are attached to the fixing base 16, which has the same function as a pallet used in a forklift. The operation in this embodiment is the same as that in the first embodiment. In this state, the door 2 can be replaced. That is, the forks of the forklift are inserted into the slits 16A provided in the fixing base 16, and the fixing base 16 is moved to replace the door 2.

[0029] The object to which the attachment part is attached is not limited to a lifter, but may be an elevator having a function of lifting an object from below to above, such as a forklift or a lifting cart within a facility.

[0030] Embodiment 4 In this embodiment, door 2 is replaced not by an elevator with a lifting function from below, but by a function of hanging from above like a crane. The configuration of each figure will be described below. Fig. 13 is a side view showing the elevator for door replacement of a switchgear according to embodiment 4, Fig. 14 is a plan view showing the elevator for door replacement when attaching a door to a switchgear, Fig. 15 is a side view showing the hanging metal fitting support base, and Fig. 16 is a front view showing the hanging metal fitting support base.

[0031] As shown in Fig. 13, lashing rope 18, rope 6a (first rope), and rope 6b (second rope) are attached to door 2. As shown in Figs. 13, 14, 15, and 16, frame 49A is attached to lifter (elevator) 1 in a vertical direction to the floor plate, and frame 49B is further attached in a vertical direction to frame 49A, so that frames 49A and 49B are configured to be integrated. Then, frame 23 for fixing the chain is disposed so as to span between frames 49B, metal fittings for fixing the chain are attached to frame 23 for fixing the chain with bolts, and chain 19 is attached to the metal fittings. A chain 19 is attached to a frame 23 for fixing the chain to the hanging metal fitting support base, and a carabiner 20 is attached to the end of this chain 19. The door 2 can be hung by attaching the door 2 to the carabiner 20 via a rope 6a. Two sets of door movement limiting frames 17 of a pair of hanging metal fittings are provided on the frame 49B so as to contact both sides of the door 2, and the door movement limiting frames 17 limit the movement of the door 2 in the lateral direction (Z direction in FIG. 16). Furthermore, by passing a rope 6b through the door movement limiting frames 17, the movement of the door 2 in the width direction Y is limited as shown in FIG. 14. In this state, the door 2 can be replaced.

[0032] A specific method for assembling the above structure will be described below. As shown in Fig. 13, the door 2 is placed between the door movement limiting frames 17, and two lashing ropes 18 are tied to the door 2 in the longitudinal direction (vertical direction). At this time, the door 2 is not tied too tightly with the lashing ropes 18, and a small gap is left between the door 2 and the lashing ropes 18. Figs. 17 and 18 are a side view and a front view of the hanging metal fitting support base at this time. As shown in Figs. 17 and 18, the lashing ropes 18 are tied while leaving a gap G between the lashing ropes 18 and the door 2 that is large enough for the rope 6a to pass through.

[0033] Next, the rope 6a is passed through the gap G and tied in a fisherman's knot to make a loop. Figures 19 and 20 are a side view and a front view of the suspension fitting support base at this stage, and Figure 21 is an enlarged side view of part D in Figure 19. Here, the lashing rope 18 is tied up. Then, the looped rope 6a is hooked onto the carabiner 20 attached to the arm 3 of the elevator, and the door 2 is ready to be hung from above. Figures 22 and 23 are a side view and a front view of the hanging metal fitting support base at this stage.

[0034] If the door 2 is left hanging in this state, it will just be suspended in mid-air, so as shown in Figures 13 and 14, a rope 6b is passed through a rope-passing hole 17a provided in the door movement limiting frame 17, the rope 6b is tied into a loop using a fisherman's knot or the like, and the door 2 is tied and fixed with the rope 6b as shown in Figure 14, thereby fixing the door 2 in space. Figures 24, 25, and 26 are plan, side, and front views of the door replacement elevator when attaching the door to the switch gear showing this state, and Figure 27 is an enlarged plan view of part E in Figure 24.

[0035] Next, as a method for obtaining the same effect as when using the lashing rope 18 shown in Fig. 13, it is possible to clamp the door 2 from both sides with a U-shaped frame, a vice, etc. at the position where the lashing rope 18 is installed. This will be explained below with reference to Figs. 28 to 33. As shown in Figures 28 and 29, a U-shaped frame 30 is fixed with bolts and nuts to the area where the hole is made in the door 2. In the case of a vice, a C-shaped vice is clamped in the same position. At this time, a gap is left between the door 2 and the U-shaped frame 30 or the vice so that the rope 6a can pass through. Next, as shown in Figures 30 and 31, the rope 6a is passed through the gap between the U-shaped frame 30 and the door 2. Then, the rope 6a is made into a loop. In the case of a vice, the rope 6a is passed through the gap between the vice and the door 2 and made into a loop. Next, as shown in Figures 32 and 33, the looped rope 6a is hooked onto the carabiner 20 attached to the elevator frame 49B, allowing the door 2 to be suspended from above.

[0036] As described above, instead of an elevator with a lifting function from below, such as a forklift as shown in embodiment 3, an elevator with a suspending function from above, such as a crane, can be used as the object to which the mounting parts are attached.

[0037] Embodiment 5. In this embodiment, unlike the first and second embodiments, the contact surface between the door and the elevator is reduced. Specifically, the door 2 is sandwiched from both sides of the door 2 by the electromagnetic force of electromagnets 21, and the elevator can be operated with the door 2 fixed. The configuration of each figure will be described below. Fig. 34 is a side view showing the elevator for replacing the door of a switchgear according to embodiment 5, and Fig. 35 is a plan view showing the elevator for replacing the door when attaching the door to the switchgear.

[0038] Door fixing arms 3 approach both sides of door 2 and apply electromagnetic or physical force to door 2 to hold door 2. This limits the movement of door 2 in all directions. In this state, door 2 can be replaced in the same manner as in the first embodiment.

[0039] Also, the door 2 can be fixed by using a tool such as a vice that can apply force to both sides. The role of the arm 3 is to support the door 2 so that it does not fall over, and it does not apply force directly to the door 2. In contrast, a vice has the function of clamping an object with its arms and fixing it, so it fixes the door 2 by using the force of clamping the object from both sides. Figure 36 is a side view of a switchgear door replacement elevator that uses a vice, and the door 2 and arm 3 are clamped and fixed using a C-type vice at the dotted line H part in Figure 36.

[0040] According to this embodiment, compared to embodiment 1 etc., the contact area between the frame 11, the guide 4 and the arm 3 which come into contact with the door 2 when the door 2 is fixed can be reduced, thereby reducing the possibility of damaging the door 2. Furthermore, according to this embodiment, the door can be raised and lowered not only by lifting the bucket like a lifter, but also by an elevator that has a mechanism for raising and lowering only the frame (arm) that clamps the door from both sides. In other words, the door can be used not only in elevators that have a mechanism for lifting the floor surface like a lifter or a cart, but also in elevators that clamp an object from both sides with something like an arm and raise and lower the arm as shown in this embodiment.

[0041] Although the present disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to application to a particular embodiment, but may be applied to the embodiments alone or in various combinations. Therefore, countless modifications not exemplified are assumed within the scope of the technology disclosed in this specification, including, for example, modifying, adding, or omitting at least one component, and further, extracting at least one component and combining it with a component of another embodiment.

[0042] Various aspects of the present disclosure will be summarized below.

[0043] (Appendix 1) A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; a guide attached to a floor plate laid on a bucket of the elevator and supporting a lower portion of the door; An electrical equipment door replacement lift consisting of a rope for restraining the movement of said door. (Appendix 2) 2. The electrical equipment door replacement elevator according to claim 1, wherein the height position of the arm can be adjusted. (Appendix 3) The door replacement elevator for electrical equipment described in Appendix 1 or Appendix 2, in which an elevator having a function of lifting an object from below to above is used as the elevator, and the mounting parts are attached to the elevator. (Appendix 4) A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes a first rope for suspending the door from a suspension bracket support; An electrical equipment door replacement elevator comprising a door movement limiting frame attached to the hanging bracket support base and for limiting lateral movement of the door. (Appendix 5) 5. A door replacement elevator for electrical equipment as described in appendix 4, in which the door is tied vertically with two lancing ropes and the first rope is passed through the gap between the lancing ropes and the door. (Appendix 6) 6. A door replacement elevator for electrical equipment as described in appendix 4 or appendix 5, in which a second rope is passed through a rope passing hole provided in the door movement limiting frame and the door is fixed by the second rope. (Appendix 7) A door replacement elevator for electrical equipment as described in Appendix 4, in which a U-shaped frame or vice is clamped to the door and the first rope is passed through the gap between the U-shaped frame or vice and the door. (Appendix 8) A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; The door replacement elevator is an electrical device that is composed of electromagnets that clamp the door from both sides with electromagnetic force and fix the door in place. (Appendix 9) A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; An electrical equipment door replacement lift consisting of a tool capable of applying force from both sides of the door. (Appendix 10) A door replacement elevator for electrical equipment as described in Appendix 8 or Appendix 9, which uses an elevator having a function of raising and lowering the arm. (Appendix 11) The door replacement elevator for electrical equipment described in any one of appendices 1 to 10 has two functions: a function as an elevator for door replacement work and a function as a lifter for transporting equipment, by attaching and detaching the mounting parts. (Appendix 12) The door replacement elevator for electrical equipment described in any one of appendices 1 to 11, wherein the mounting parts are fixed to the elevator by direct welding. [Explanation of symbols]

[0044] 1 lifter, 2 door, 3 arm, 4,15 guide, 5 floor board, 6,6a,6b rope, 7 stopper, 8 eye bolt, 9 arm support frame, 10 switch gear, 11 frame, 12A,12B,12D,12E rubber sheet, 13 Pole, 14 Hinge, 16 Fixing base, 17 Door movement limiting frame, 17a Rope hole, 18 Lashing rope, 19 Chain, 20 Carabiner, 21 electromagnet, 22 bucket, 23 frame for fixing chain, 24 hole, 30 L-shaped frame.

Claims

1. A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; a guide attached to a floor plate laid on a bucket of the elevator and supporting a lower portion of the door; An electrical equipment door replacement lift consisting of a rope for restraining the movement of said door.

2. 2. The elevator for replacing a door of an electrical device according to claim 1, wherein the position of the arm in the height direction is adjustable.

3. 3. The elevator for replacing a door of an electrical device according to claim 1 or 2, wherein the elevator is an elevator having a function of lifting an object from below to above, and the mounting part is attached to the elevator.

4. A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes a first rope for suspending the door from a suspension bracket support base; An electrical equipment door replacement elevator comprising a door movement limiting frame attached to the hanging bracket support base and for limiting lateral movement of the door.

5. 5. The elevator for replacing a door for electrical equipment according to claim 4, wherein the door is tied vertically with two lashing ropes, and the first rope is passed through a gap between the lashing ropes and the door.

6. 6. The elevator for replacing a door of an electrical device according to claim 4 or 5, wherein a second rope is passed through a rope passing hole provided in the door movement limiting frame, and the door is fixed by the second rope.

7. 5. The elevator for replacing a door of an electrical device according to claim 4, wherein a U-shaped frame or a vice is clamped to the door, and the first rope is passed through a gap between the U-shaped frame or the vice and the door.

8. A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; The door replacement elevator is an electrical device that is composed of electromagnets that clamp the door from both sides with electromagnetic force and fix the door in place.

9. A door replacement elevator for electrical equipment, which is configured to perform door replacement work on electrical equipment with the door vertically held by attaching a mounting part to the elevator, The mounting part includes an arm that holds the door in a width direction of the door and is movable in a thickness direction of the door; An electrical equipment door replacement lift consisting of a tool capable of applying force from both sides of the door.

10. 10. The electric equipment door replacement elevator according to claim 8 or 9, further comprising an elevator having a function of raising and lowering the arm.

11. The door replacement elevator for electrical equipment as described in claim 1 or claim 2, which has two functions: a function as an elevator for door replacement work and a function as a lifter for transporting equipment, by attaching and detaching the mounting parts.

12. 3. The elevator for replacing a door of an electrical device according to claim 1 or 2, wherein the mounting parts are fixed to the elevator by direct welding.

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