chassis

Abstract

To provide a housing capable of improving the workability of maintenance and inspection work. [Solution] The housing 41 comprises a main body 42 including a first maintenance target device 52 arranged above and a second maintenance target device 54 arranged below the first maintenance target device 52, and a cover 60 that covers the first maintenance target device 52 and the second maintenance target device 54 arranged below the first maintenance target device 52, and the cover 60 includes a first panel (upper panel) 62 whose upper end is rotatably supported on the main body 42, and a second panel (lower panel) 64 that is rotatably connected to the first panel 62, and the lower end of the second panel 64 is inserted into receiving portions U1, U2 provided on the main body 42 to hold both panels 62, 64 in a folded state, thereby exposing the second maintenance target device 54.

Description

[Technical Field]

[0001] The present invention relates to an elevator, and more particularly to a housing for storing equipment to be maintained that is installed in an elevator hoistway. [Background technology]

[0002] Some elevators have maintenance equipment installed in the pit (bottom) of the elevator shaft, such as electronic devices that control the operation of the elevator car. This maintenance equipment needs to be inspected during maintenance inspections, but if the pit is flooded by heavy rain or other causes, the electronic devices will be submerged, posing a problem of requiring a great deal of effort for subsequent restoration work.

[0003] On the other hand, if the equipment to be maintained is installed in a position higher than the pit in the elevator shaft, the maintenance worker must perform the inspection while standing on top of the car, and when inspecting the equipment to be maintained, the cover of the housing that houses the equipment to be maintained must be removed before the maintenance work can be performed. Therefore, during the maintenance and inspection work, this removed cover must be temporarily placed on top of the car, which creates a problem in terms of workability.

[0004] In this regard, Patent Document 1 discloses a housing for storing maintenance target equipment in an elevator control panel, in which the maintenance target equipment is attached to a rotating panel via an equipment mounting plate and is configured to be rotatable between an upper normal position and a lower inspection position as the rotating panel rotates. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5523576 Summary of the Invention [Problem to be solved by the invention]

[0006] The housing described in Patent Document 1 above does not require the cover to be removed from the housing when performing maintenance and inspection work, but there is a problem in that the heavy equipment to be maintained must be rotated between the normal position and the inspection position each time the work is performed, which increases the workload.

[0007] The present invention provides a housing that can reduce the workload of maintenance and inspection work. [Means for solving the problem]

[0008] The housing according to the first aspect of the present invention is a housing for storing maintenance target equipment that is installed in an elevator hoistway and requires maintenance and inspection, and comprises a main body portion including a first maintenance target equipment that is arranged at the top of the maintenance target equipment and a second maintenance target equipment that is arranged below the first maintenance target equipment, and a cover portion that covers the first maintenance target equipment and the second maintenance target equipment, and the cover portion includes an upper panel whose upper end is rotatably supported on the main body portion and a lower panel rotatably connected to the upper panel, and is configured so that the lower end of the lower panel is inserted into a receiving portion provided on the main body portion to hold the upper panel and the lower panel in a folded state, thereby exposing the second maintenance target equipment.

[0009] A housing according to a second aspect of the present invention is a housing for storing maintenance target equipment that is installed in an elevator hoistway and requires maintenance and inspection, and comprises a main body portion that includes a first maintenance target equipment that is arranged above the maintenance target equipment and a second maintenance target equipment that is arranged below the first maintenance target equipment, and a cover portion that covers the first maintenance target equipment and the second maintenance target equipment and has an upper end that is rotatably connected to the main body portion and is configured to be bendable in the vertical direction, and the cover portion is configured to expose the first maintenance target equipment and the second maintenance target equipment by engaging a protrusion portion provided in the middle portion of the cover portion with an engaging portion provided above the cover portion and bending the cover portion.

[0010] In the housing according to the first aspect of the present invention, the cover portion may be configured to expose the first maintenance target device and the second maintenance target device by engaging a protrusion provided on the cover portion with an engagement portion provided above the cover portion.

[0011] In the housing according to the second aspect of the present invention, the cover portion is inserted into a receiving portion provided on the main body portion and held in a bent state. The second maintenance target device may be exposed. [Effects of the Invention]

[0012] According to the housing of the first aspect of the present invention, by inserting the lower panel into the receiving part, the second maintenance target device arranged below can be exposed and maintenance and inspection work can be performed, thereby reducing the workload of maintenance and inspection work.

[0013] According to the housing of the second aspect of the present invention, the first maintenance target device and the second maintenance target device can be exposed by holding the cover in a folded state by engaging the protrusion with the engaging portion provided above the cover, thereby reducing the workload of maintenance and inspection work. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic diagram illustrating the overall configuration of an elevator shaft, showing the layout of an elevator control panel including a housing according to an embodiment of the present invention. [Figure 2] FIG. 2 is a functional block diagram focusing on a control panel included in FIG. 1. [Figure 3] FIG. 3(a) is a diagram showing the front configuration of the control panel, and FIG. 3(b) is a diagram showing the side configuration of the control panel together with the raised and lowered positions of the car during maintenance and inspection. [Figure 4]Figure 4(a) is a diagram showing the operation of the front cover when it is bent and opened to expose the second maintenance target equipment located in the center of the control panel, and Figures 4(b) and 4(c) are enlarged partial views of the area circled in dashed lines in Figure 4(a), with Figure 4(b) being an enlarged partial view showing the state just before the lower panel is inserted into the receiving section provided in the main body, and Figure 4(c) being an enlarged partial view showing the state after the lower panel has been inserted into the receiving section. [Figure 5] Figures 5(a) to 5(c) are figures sequentially showing the operation of the cover part, along with the raising and lowering movement of the car, from a half-open state in which the second maintenance target equipment is exposed by inserting and supporting the lower end of the lower panel of the front cover part into the receiving part, to a fully open state in which the lower panel is further rotated upward and the protrusion on the panel is engaged with the hook on the main body part. DETAILED DESCRIPTION OF THE INVENTION

[0015] An elevator 10 according to one embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of a hoistway 12 of the elevator 10. FIG. 2 is a functional block diagram centered on a control panel 40. As shown in FIGS. 1 and 2, the elevator 10 includes a car 20 and a counterweight 21 suspended movably in the vertical direction within the hoistway 12 via a steel main rope 11, a first fixed pulley 13A, a second fixed pulley 13B, and a hoist M. The first fixed pulley 13A and the second fixed pulley 13B are attached to supports FL1 and FL2, respectively, which are fixed to a beam 12A located at a top 12T, which is the uppermost portion of the hoistway 12.

[0016] In addition, in the elevator 10 of this embodiment, the main rope 11 is stretched so that the speed ratio (roping ratio) between the hoisting speed of the sheave M1 provided in the hoisting machine M and the lifting speed of the car 20 is 2:1. Specifically, one end of the main rope 11 is fixed via a hitch BL1 to a support frame FL3 provided near the top 12T of the hoistway 12, and hangs down directly downward and spans a pair of under-car pulleys 20a, 20b provided at the bottom of the car 20, a first fixed pulley 13A installed at the top 12T of the hoistway 12, a sheave M1 of the hoisting machine M fixed directly above a pit 12P in the hoistway 12, a second fixed pulley 13B at the top 12T of the hoistway 12, and a pulley 21a provided at the top of the counterweight 21, in this order, with the other end connected and fixed to a beam 12A of the hoistway 12 via a hitch BL2. In this embodiment, the under-car pulleys 20a, 20b of the car 20 function as movable pulleys.

[0017] In this embodiment, the hoisting machine M is positioned slightly above the pit 12P of the elevator shaft 12 as part of measures to prevent flooding during floods, etc., but it may also be positioned within the pit 12P or elsewhere within the elevator shaft 12.

[0018] The elevator 10 is equipped with a control panel 40 that controls the overall operation of the car 20. The control panel 40 is installed on the wall surface of the hoistway 12 at a position at the top 12T of the hoistway 12, i.e., slightly above the top floor landing 14A.

[0019] As shown in Fig. 1, the car 20 has a car door 22. On the other hand, hall doors 16A, 16B, 16C, ... (hereinafter, when there is no particular need to distinguish between them, they will be referred to as hall doors "16") are provided at halls 14A, 14B, 14C, ... (hereinafter, when there is no particular need to distinguish between them, they will be referred to as hall doors "16").

[0020] Each landing door 16 is constantly biased in the direction of closing the door via an elastic member such as a spring, and is held in a closed state via locking mechanisms 17A, 17B, 17C, ... (hereinafter, when there is no particular need to distinguish between them, they will be referred to as locking mechanisms "17" as appropriate) attached to the upper part. Each landing door 16 is arranged so that it is released from being fixed by the locking mechanism 17 and can be opened only when the above-mentioned car 20 is stopped at a preset landing position, that is, at a position opposite to the car door 22 that allows passengers to get on and off the car 20 via the landing door 16.

[0021] In addition, the locking mechanism 17 is provided with door opening sensors 18A, 18B, 18C, ... (hereinafter, when there is no particular need to distinguish between them, they will be referred to as door opening sensors "18") that have the function of detecting the open / closed state of the landing door 16.

[0022] As shown in Fig. 1, an upper car operation unit 26 is provided on the upper car 20T, which is an upper surface portion of the car 20. The upper car operation unit 26 includes a switching operation unit 27 (see Fig. 2) for performing an operation to switch the operation mode of the car 20 from a normal operation mode, which will be described later, to manual operation, and a lifting / lowering operation unit 28 (see Fig. 2) for performing an operation to lift / lower the car 20 during manual operation. This allows a maintenance worker to lift / lower the car 20 during maintenance inspection after switching to manual operation with the car 20 on top.

[0023] As shown in FIG. 2, the control panel 40 includes a storage device 43 including a ROM, a RAM, an HDD, and the like in which various control programs are stored, and an arithmetic processing device (not shown) such as a CPU, and functions as an operation control unit 44 that controls the drive of the hoisting machine M by reading the control programs from the storage device 43 and performing arithmetic processing, and a door monitoring unit 46 that detects the open / closed state of the landing door 16 via the door open sensor 18 described above.

[0024] The operation control unit 44 is configured to execute a normal operation mode in which the car 20 is raised or lowered (moved) to each floor landing 14 based on a landing call made via the landing operating panels 15A, 15B, 15C, ... (hereinafter, when there is no need to distinguish between them, the landing operating panels will be referred to as "15" as appropriate) installed at the landings 14 on each floor, and a destination floor operation made via the car operating panel 24 installed inside the car 20, in other words, a car call operation.

[0025] The car operation panel 24 (see Figure 2), like the car on-board operation unit 26 described above, also has the function of switching the operation mode of the car 20 from the normal operation mode described below to manual operation, and of operating the car 20 to raise and lower during manual operation.

[0026] The operation control unit 44 also has a prohibition mode that prohibits the execution of the normal operation mode described above. This prohibition mode is executed when the opening of the hall door 16 is detected via the door monitoring unit 46 in a state where the car 20 is not stopped (landed) at a preset landing position when the car 20 stops at the hall 14, in other words, the car 20 is not stopped (landed) at a position facing the hall door 16.

[0027] Here, the car 20 is fitted with a floor landing position detection unit 45 having a function of detecting the position of the car 20. This floor landing position detection unit 45 has a function of detecting a light blocking plate (not shown) provided on the wall surface of the elevator shaft 12 corresponding to each landing 14. This enables the operation control unit 44 to determine whether or not the car 20 is positioned at a preset floor landing position.

[0028] Next, the configuration of the control panel 40 will be described with further reference to Figures 3(a) and 3(b). Figure 3(a) is a diagram showing the front configuration of the control panel 40, and Figure 3(b) is a diagram showing the side configuration of the control panel 40. In Figure 3(a), the areas where the first maintenance target area 52 and the second maintenance target area 54 are located are indicated by dashed lines.

[0029] As shown in FIGS. 3(a) and 3(b), the control panel 40 has a housing 41 with a generally vertically elongated box-like appearance and is installed on the wall surface of the elevator shaft 12. The housing 41 includes a main body 42 that houses (contains) a first maintenance target device 52 and a second maintenance target device 54, which are composed of various electronic devices for controlling the elevation and descent of the car 20. The main body 42 is a metal casing, and the first maintenance target device 52 is disposed in the upper part of the main body 42, and the second maintenance target device 54 is disposed in the lower part. A folding cover 60 is attached to the front side of the two maintenance target devices 52 and 54 of the main body 42. Hooks R1 and R2 are provided on both widthwise ends of the upper end of the main body 42 for securing a second panel 64, which will be described later. The hooks R1 and R2 are elongated metal plates with hook-shaped tips and are rotatably attached to the main body 42.

[0030] As shown in FIG. 3(a), the cover 60 includes a first panel (upper panel) 62 whose upper end is rotatably supported by the main body 42, and a second panel (lower panel) 64 rotatably connected to the lower end of the first panel 62. Both panels 62, 64 are generally rectangular in front view, and have folded-back portions 62L, 62R, 64L, 64R formed by bending both left and right ends toward the main body 42 at right angles. Furthermore, protrusions Q1 and Q2 (see FIG. 3(b)) protruding in the width direction are attached to the upper portions of the folded-back portions 64L, 64R of the second panel 64 at the same vertical positions. The protrusions Q1 and Q2 are, for example, formed by bolts or the like.

[0031] In addition, slits SL1 and SL2 are provided at both widthwise ends of the lower end on the front side of the second panel 64, and the second panel 64 is fixed to the main body 42 via bolts BT1 and BT2 that screw into screw holes (not shown) provided at positions that overlap the slits SL1 and SL2 of the main body 42.

[0032] The first panel 62 is positioned to cover the front side of the upper part of the first maintenance target equipment 52 and the second maintenance target equipment 54 described above, and the second panel 64 is positioned to cover the other parts of the second maintenance target equipment 54 except for the upper part, i.e., the front side of the center and lower part of the second maintenance target equipment 54.

[0033] In this embodiment, the central portion (middle portion) of the cover portion 60 in the vertical direction, more specifically the lower end portion of the first panel 62 and the upper end portion of the second panel 64, are not fixed to the main body portion 42, but may be removably fixed to the main body portion 42 using bolts or magnets.

[0034] 4(a) is a diagram showing the operation of the cover unit 60 over time as it is changed from a closed state to a half-open state, with P1 indicated by a dashed line representing the state of the cover unit 60 when it is slightly open, P2 indicated by a dot-dash line representing the state of the cover unit 60 when it is opened further than P1, and P3 indicated by a solid line representing the state of the cover unit 60 when it is in the half-open state. Figures 4(b) and 4(c) are partial enlarged views of the area circled and indicated by the dashed line in Figure 4(a), with Figure 4(b) showing the state immediately before the lower end of the cover unit 60, i.e., the lower end of the second panel 64, is inserted into the receiving portion U1 of the side plate 42A of the housing 41 to change it to the half-open state, and Figure 4(c) showing the state after the lower end of the second panel 64 has been inserted into the receiving portion U1 of the side plate 42A.

[0035] As shown in FIGS. 4(a) to 4(c), the cover portion 60 becomes rotatable in the vertical direction by removing the bolts BT1 and BT2 (see FIG. 3(a)) that connect and fix the lower end of the second panel 64 to the main body portion 42. Then, by pushing the second panel 64 upward in this state, the cover portion 60 is rotated while being bent upward in the order of P1, P2, and P3. Furthermore, the lower end of the second panel 64 is inserted into receiving portions U1 and U2 (see FIG. 3(a)) that are formed by cutting out portions of the side plates 42A and 42B (see FIG. 3(a)) that constitute both widthwise ends of the main body portion 42. This allows the cover portion 60 to be held by the main body portion 42.

[0036] As a result, the cover section 60 is half-opened, exposing the second maintenance target device 54 (see FIG. 3(a)), allowing maintenance personnel to perform maintenance work such as visual inspection and replacement work from outside.

[0037] Next, the procedure for changing the cover part 60 from the half-open state to the fully open state will be described with reference to Figures 5(a) to 5(c). As shown in Figures 5(a) and 5(b), the maintenance person raises the car 20 via the car-mounted operating part 26 (see Figure 2) to a position where the safety fence 70 is close to directly below the second panel 64 inserted into the receiving parts U1 and U2. This makes it easier for the maintenance person on the car-mounted 20T to push the second panel 64 further upward.

[0038] 5(b) and 5(c), the maintenance technician lifts the second panel 64 and rotates the hook R1, which is rotatably supported on the side plate 42A of the main body 42 above the cover unit 60, from the position indicated by the dashed line in FIG. 5(c) to the position indicated by the solid line, to engage with the protrusion Q1. Similarly, the hook R2 on the opposite side plate 42B also engages with the protrusion Q2. This folds the cover unit 60 into a fully open state, exposing the first maintenance-targeted device 52 (see FIG. 3(a)) housed in the housing 41. As a result, maintenance and inspection work on the first maintenance-targeted device 52 can also be performed.

[0039] Next, the procedure for the maintenance and inspection work of the control panel 40 described above will be explained. As shown in Figures 3(a) and 3(b), for example, when inspection work is performed by two maintenance personnel, one of the maintenance personnel enters the car 20 in advance and switches from the normal operation mode to the manual operation mode via the car operating panel 24 (see Figure 2). Then, as shown in Figure 1, the car 20 is raised to a position where the car top 20T of the car 20 can be entered from the top floor landing 14A, that is, to a vertical position where the vertical position of the car top 20T is slightly higher than the floor level of the top floor landing 14A. Note that, in Figure 1, the horizontal gap between the car 20 and the landing door 16 is shown as being wide in order to schematically illustrate the configuration of each part, but in reality, the horizontal gap between the car 20 and the landing door 16 is arranged to be narrow.

[0040] Next, the other maintenance worker waiting at the top floor landing 14A unlocks the locking mechanism 17A using a special tool (not shown), opens the landing door 16A, gets on the car upper part 20T, and switches to manual operation via the switching operation unit 27 in the car upper operation unit 26. Then, as shown by the dashed line in Figure 1, he assembles and installs the safety fence 70 that has been pre-loaded on the car upper part 20T.

[0041] Next, as shown in Fig. 3(b), the car 20 is manually raised via the car on-car operating unit 26 (see Fig. 2) to a position close to the control panel 40. In this state, the cover unit 60 is lifted to a half-open state as shown in Figs. 4(a) to 4(c), and maintenance and inspection work is performed on the second maintenance target device 54.

[0042] 5(a) and 5(b), the car 20 is raised slightly to come close enough to the half-open cover 60, and then the cover 60 is further raised to the fully open state (see FIG. 5(c)). Then, in this state, maintenance and inspection work is carried out on the first maintenance target device 52.

[0043] After the maintenance and inspection work on the first maintenance target equipment 52 is completed, the cover unit 60 is returned to its original position by reversing the above-described procedure. More specifically, the protrusions Q1, Q2 of the second panel 64 of the cover unit 60 are disengaged from the hooks R1, R2, and the lower end of the second panel 64 is rotated downward to a position where it is inserted into the receiving parts U1, U2 of the main body 42 and held in a half-open state. Thereafter, the car 20 is lowered slightly via the on-car operating unit 26, and then the lower end of the second panel 64 is pulled out from the receiving parts U1, U2 and rotated downward, and bolts BT1, BT2 are inserted into the slits SL1, SL2 at the lower end of the panel 64 to secure it in place.

[0044] Then, the car 20 is lowered via the car on-board operating unit 26 to a position where it can be retracted from the hall door 16A to the top floor hall 14A, and the safety fence 70 is dismantled and returned to its original position on the car on-board 20T. Furthermore, after switching from manual operation to normal operation mode via the switching operating unit 27, the car is retracted from the hall door 16A to the top floor hall 14A. This completes the series of maintenance and inspection work on the control panel 40.

[0045] In the above embodiment, the procedure for maintenance and inspection work is described in which the cover unit 60 is set to a half-open state, and then the car 20 is raised slightly to set the cover unit 60 to a fully open state, but the present invention is not limited to this. For example, if all maintenance and inspection work can be performed simply by setting the cover unit 60 to a half-open state, that is, if only maintenance and inspection work is to be performed on the second maintenance target device 54, the maintenance and inspection work may be performed with the cover unit 60 in a half-open state, and then the cover unit 60 may be closed without setting the cover unit 60 to a fully open state, and the lower end of the second panel 64 may be fixed to the main body 42 with the bolts BT1 and BT2, thereby completing the maintenance and inspection work.

[0046] According to the housing 41 of this embodiment, by inserting the lower second panel 64 into the receiving portions U1 and U2, the second maintenance target device 54 arranged below can be exposed and maintenance and inspection work can be performed. This reduces the workload of maintenance and inspection work.

[0047] Furthermore, according to the housing 41 of this embodiment, the protrusions Q1, Q2 are engaged with the hooks R1, R2 provided above the cover part 60, thereby holding the cover part 60 in a folded state, thereby exposing the first maintenance target device 52 and the second maintenance target device 54. This also reduces the workload of maintenance and inspection work.

[0048] Furthermore, according to the housing 41 of this embodiment, maintenance and inspection work can be performed on the first maintenance target device 52 and the second maintenance target device 54 by rotating both panels 62, 64 constituting the cover unit 60 in the vertical direction. This has the advantage that the cover unit 60 can be opened and closed without any hindrance even when the safety fence 70 is close to the control panel 40.

[0049] In the above embodiment, an example has been described in which the cover portion 60 of the housing 41 can be held in both half-open and fully-open states, but the present invention is not limited to this. For example, if it is only necessary to hold the cover portion 60 in the half-open state, the hooks R1 and R2 described above may not be provided. Also, if it is only necessary to hold the cover portion 60 in the fully-open state, the receiving portions U1 and U2 may not be provided on the side plates 41A and 41B of the housing 41.

[0050] In the above embodiment, the housing 41 of the control panel 40 that controls the operation of the car 20 has been described as an example, but the present invention is not limited to this. For example, the present invention may be applied to the housing of other electronic devices installed in the elevator shaft 12 that require regular or irregular maintenance inspections.

[0051] The present invention can be implemented in various forms, including improvements, modifications, and variations based on the knowledge of those skilled in the art, without departing from the spirit of the invention. Furthermore, the invention can be implemented in a form in which any of the features of the invention are replaced with other technology, as long as the same action or effect is achieved. [Explanation of symbols]

[0052] 10 Elevator 11 Main rope 12 Elevator shaft 12T top Platforms 14, 14A, 14B, 14C 15, 15A, 15B, 15C platform control panel 16, 16A, 16B, 16C landing doors 17, 17A, 17B, 17C Locking mechanism 18, 18A, 18B, 18C Door open sensor 20 Car 22 Cage door 24 Cage control panel 26 Car top operation unit 27 Switching operation section 28 Lifting control unit 40 Control Panel 41 Case 42 Main body 43 Storage Devices 44 Operation control unit 45 Landing position detection unit 46 Door monitoring unit 52 Equipment subject to first maintenance 54 Second maintenance target equipment 60 Cover 62 First Panel (Top Panel) 64 Second Panel (Lower Panel) BT1, BT2 bolts U1, U2 receiving part Q1,Q2 protrusion R1, R2 hook (engagement part) SL1,SL2 slits

Claims

1. A housing for storing maintenance target equipment that is installed in an elevator hoistway and requires maintenance and inspection, a main body including a first maintenance target device arranged above the maintenance target devices and a second maintenance target device arranged below the first maintenance target device; a cover portion for covering the first maintenance target device and the second maintenance target device; Equipped with the cover unit includes an upper panel whose upper end is rotatably supported by the main body unit, and a lower panel rotatably connected to the upper panel, and is configured to expose the second maintenance target device by holding the upper panel and the lower panel in a folded state by inserting the lower end of the lower panel into a receiving portion provided on the main body unit. Case.

2. A housing for storing maintenance target equipment that is installed in an elevator hoistway and requires maintenance and inspection, a main body including a first maintenance target device arranged above the maintenance target devices and a second maintenance target device arranged below the first maintenance target device; a cover portion that covers the first maintenance target device and the second maintenance target device, has an upper end portion rotatably connected to the main body portion, and is configured to be bendable in the vertical direction; Equipped with The cover portion is configured to expose the first maintenance target device and the second maintenance target device by engaging a protrusion provided in an intermediate portion of the cover portion with an engaging portion provided above the cover portion and bending the cover portion. Case.

3. the cover portion is configured to expose the first maintenance target device and the second maintenance target device by engaging a protrusion provided on the cover portion with an engaging portion provided above the cover portion. The housing of claim 1 .

4. the cover portion is configured to expose the second maintenance target device by inserting a lower end portion of the cover portion into a receiving portion provided on the main body portion and holding the cover portion in a bent state. The housing of claim 2 .

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