Gondola Equipment

Abstract

To provide a gondola device equipped with a driving device including a rechargeable battery and improved in workability.SOLUTION: A gondola device 5 includes an elevator car 10, winders 20a, 20b, a driving device 40, and an underfloor shelf 50. The winders 20a, 20b are fixed to the elevator car 10 and wind wire ropes 2a, 2b for suspending the elevator car 10. The driving device 40 drives the winders 20a, 20b. The underfloor shelf 50 is arranged below the elevator car 10 and supports at least parts 41, 45 of the driving device 40.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a gondola apparatus. [Background technology]

[0002] A gondola used for work in an elevator hoistway formed in a building generally includes a car, a wire rope for suspending the car, a winder installed on the floor of the car, and a control panel for driving the winder. The gondola ascends or descends in the hoistway by winding up the wire rope with the winder. Power supply equipment such as a distribution board is located above the building. The winder is connected to the power supply equipment via a tail cord. This allows power to be supplied to the winder to drive it.

[0003] However, installing and removing the tail cord requires a lot of time and effort, and the tail cord may also pose a risk to work safety. For example, if the tail cord becomes entangled with items in the hoistway, the items may be damaged.

[0004] Also, if the building does not have a power supply facility, a generator may be used to supply power to the winder. However, this creates various problems. For example, it is expensive to prepare and operate the generator. In addition, a large amount of carbon dioxide is emitted when the generator is operated.

[0005] To solve these problems, it may be possible to equip the car with a battery device including a rechargeable battery in order to supply power to the winder. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6261800 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in this case, it is necessary to mount a large and heavy battery device in the car. If a large battery device is installed in the car, the working space in the car will be reduced. In addition, a heavy battery device needs to be installed in consideration of the weight balance of the car so that the car does not tilt. For this reason, it is difficult to install the battery device in a way that does not interfere with the work of workers in the car.

[0008] In consideration of such problems, in Japanese Patent Publication No. 6261800, battery devices (batteries, auxiliary batteries, etc.) are arranged on the left and right outer surfaces of the car. However, when such a gondola device is applied to an elevator hoistway, it is necessary to reduce the left and right dimensions of the car. In addition, the battery devices may prevent access to the work object from the car, making the work difficult.

[0009] The present invention has been made in consideration of these points, and has an object to provide a gondola apparatus equipped with a drive unit including a rechargeable battery, which has improved operability. [Means for solving the problem]

[0010] The gondola device according to the present embodiment is A car, a winder that is fixed to the car and winds up a wire rope that suspends the car; A drive device including a rechargeable battery for driving the winder; and an underfloor shelf disposed below the car and supporting at least a portion of the drive mechanism. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing the configuration of a gondola device according to one embodiment of the present invention. [Figure 2A] FIG. 2A is a plan view of a car of the gondola device shown in FIG. 1 as viewed from above. [Figure 2B] FIG. 2B corresponds to FIG. 2A and shows a state in which the floor of the car is extended. [Figure 2C] FIG. 2C corresponds to FIG. 2A and shows a state in which the floor of the car is extended. [Diagram 3] FIG. 3 is a block diagram showing a configuration of a drive device of the gondola apparatus shown in FIG. [Figure 4] FIG. 4 is a perspective view showing an underfloor shelf of the gondola apparatus shown in FIG. [Diagram 5] FIG. 5 is a side view of the underfloor shelf shown in FIG. [Figure 6] FIG. 6 is a plan view of the underfloor shelf shown in FIG. 4 as viewed from above. [Figure 7] FIG. 7 is a plan view of the connecting plate of the underfloor shelf shown in FIG. [Figure 8] FIG. 8 corresponds to FIG. 4 and shows a modified example of the underfloor shelf. [Figure 9] FIG. 9 corresponds to FIG. 7 and shows a modified example of the underfloor shelf shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of a gondola device according to the present invention will be described with reference to the accompanying drawings. Fig. 1 is a perspective view of a gondola device 5 according to an embodiment of the present invention. In the example shown in Fig. 1, the gondola device 5 is used for installing an elevator device and is installed in an elevator shaft 1.

[0013] The gondola device 5 includes a car 10, a pair of winders 20a, 20b, a drive device 40 that drives the winders 20a, 20b, and an underfloor shelf 50. The car 10 has an entrance 11 on its side. Workers can enter and exit the car 10 through the entrance 11. In the illustrated example, the gondola device 5 further includes a ceiling 6. The ceiling 6 is disposed above the car 10 to protect the workers on the car 10 from falling objects.

[0014] In the following description, the direction in which the worker leaves the car 10 is referred to as the forward direction, the direction in which the worker enters the car 10 is referred to as the backward direction, and the vertical direction is referred to as the up-down direction. In addition, the direction perpendicular to the forward-backward direction and the up-down direction is referred to as the left-right direction.

[0015] A pair of first wire ropes 2a, 2b are suspended in the hoistway 1. The pair of first wire ropes 2a, 2b are spaced apart from each other in the left-right direction.

[0016] The pair of winders 20a, 20b are installed on the car 10. The pair of winders 20a, 20b are spaced apart from each other in the left-right direction. The right-side first wire rope 2a is wound around the right-side winder 20a, and the left-side first wire rope 2b is wound around the left-side winder 20b. In the illustrated example, the winders 20a, 20b and the first wire ropes 2a, 2b form an endless winder. That is, the lower ends of the first wire ropes 2a, 2b wound around the winders 20a, 20b hang down below the gondola device 5. When the winders 20a, 20b are driven by the drive device 40, the first wire ropes 2a, 2b are wound around the winders 20a, 20b. This causes the gondola device 5 to rise and fall.

[0017] In the illustrated example, the gondola device 5 further includes a pair of fall prevention devices 30a, 30b. The fall prevention devices 30a, 30b are provided on the right and left sides of the car 10. A pair of second wire ropes 3a, 3b are suspended in the elevator 1. The pair of second wire ropes 3a, 3b are spaced apart from each other in the left-right direction. The right second wire rope 3a is passed through the right fall prevention device 30a. The left second wire rope 3b is passed through the left fall prevention device 30b. When an abnormality occurs in the winders 20a, 20b or the first wire ropes 2a, 2b and the gondola device 5 starts to fall, the fall prevention devices 30a, 30b grab the corresponding second wire ropes 3a, 3b to prevent the gondola device 5 from falling.

[0018] The gondola device 5 further has two pairs of roller guides 7a, 7b. The roller guides 7a, 7b are provided below and above the right and left sides of the car 10. The pair of roller guides 7a on the right side are pressed against one of a pair of guide rails (not shown) extending vertically in the elevator 1. The pair of roller guides 7b on the left side are pressed against the other of the pair of guide rails. The gondola device 5 ascends and descends along the guide rails. This prevents the gondola device 5 from swaying and stabilizes its posture. This guide rail is a guide rail for an elevator and is installed in the elevator 1 using the gondola device 5. For this reason, in the initial stage of work using the gondola device 5, the guide rail does not exist in the elevator 1. Therefore, the gondola device 5 needs to be able to ascend and descend while maintaining a certain posture even without the guide rails.

[0019] Next, a description will be given of the car 10. The car 10 has a floor portion 12 and a handrail 14 provided upright on the floor portion 12.

[0020] The floor portion 12 supports the worker in the elevator car 10 from below. In the illustrated example, a pair of winders 20a, 20b are fixed onto the floor portion 12. The floor portion 12 is generally rectangular and has edges 12a to 12d. The edges 12a, 12b extend along the front-rear direction. The edges 12a, 12b are the right edge and the left edge of the floor portion 12, respectively. The edges 12c, 12d extend along the left-right direction. The edges 12c, 12d are the rear edge and the front edge of the floor portion 12, respectively.

[0021] As can be seen by comparing Figs. 2A to 2C, the floor section 12 can be extended in its rear area. In the example shown in Fig. 2A, the floor plate 13a forms the floor section 12. In the example shown in Fig. 2B, the floor plate 13a and the additional floor plate 13b form the floor section 12. The additional floor plate 13b is connected to the rear edge of the floor plate 13a. In the example shown in Fig. 2C, the floor plate 13a and the additional floor plates 13b and 13c form the floor section 12. The additional floor plate 13c is connected to the rear edge of the additional floor plate 13b. In each of Figs. 2A to 2C, the winders 20a and 20b are fixed at the same position on the floor plate 13a.

[0022] The handrail 14 has first to fourth support posts 14a to 14d and horizontal bars 15a to 15c. The first to fourth support posts 14a to 14d are erected at the four corners of the floor portion 12. The horizontal bars 15a to 15c extend between the adjacent support posts 14a to 14d along the right edge 12a, the left edge 12b, and the rear edge 12c of the floor portion 12. The entrance 11 is formed between the right horizontal bar 15a and the left horizontal bar 15b (in other words, above the front edge 12d of the floor portion 12). A door 16 is provided at the entrance 11. The right horizontal bar 15a and the left horizontal bar 15b face each other in the left-right direction, and the rear horizontal bar 15c and the door 16 face each other in the front-rear direction. The floor portion 12, the horizontal bars 15a to 15c, the door 16, and the ceiling 6 define a working area for the worker. Workers can enter and exit the work area through the access point 11.

[0023] The entrance 11 of the car 10 is disposed facing the wall 1a on which the elevator entrance 4 is formed, among the walls constituting the hoistway 1. This allows a worker to get on to the car 10 from the elevator entrance 4, and to get off from the car 10 to the elevator entrance 4 (and therefore to the elevator hall).

[0024] As shown in Fig. 3, the drive device 40 has a battery panel 41, an inverter panel 45, and an operation panel 47. The battery panel 41 has a rechargeable battery 42, a charging connector 43, and a battery control unit 44. The rechargeable battery 42 is charged by connecting the charging connector 43 to a charger (not shown). The battery control unit 44 controls the charging and discharging of the rechargeable battery 42.

[0025] The inverter panel 45 includes a battery inverter 46. The battery inverter 46 converts the power output from the rechargeable battery 42 into power suitable for driving the operation panel 47, and supplies the power to the operation panel 47.

[0026] The operation panel 47 has a pair of motor inverters 48a, 48b. Each of the motor inverters 48a, 48b converts the power supplied from the battery inverter 46 into power suitable for driving the winders 20a, 20b, and supplies the power to the winders 20a, 20b. A switch 49 is connected to each of the motor inverters 48a, 48b. When an operator issues a command for lifting or lowering operation using the switch 49, a driving current flows from the motor inverters 48a, 48b to the winders 20a, 20b, and the gondola device 5 lifts or lowers.

[0027] However, the driving device 40 is large in size and heavy in weight. If such a driving device 40 is installed inside the car 10 (inside the working area), the working area inside the car 10 is reduced. If the driving device 40 is attached to the outer surface of the car 10, not only will it be necessary to reduce the dimensions of the car 10 in the front-rear and / or left-right directions, but horizontal access from the car 10 to the work target (for example, items on the wall surface of the elevator shaft 1) will be restricted, which may make the work difficult.

[0028] In order to solve such a problem, the gondola device 5 of this embodiment has a floor shelf 50. The floor shelf 50 is arranged below the car 10. At least a part of the drive unit 40 is supported by the floor shelf 50. More specifically, the floor shelf 50 forms a space between the car 10 and the floor shelf 50, and at least a part of the drive unit 40 is arranged in the space. At least a part of the drive unit 40 is supported from below by the floor shelf 50. This makes it possible to reduce the area occupied by the drive unit 40 in the car 10. Therefore, the work area can be expanded. In addition, by arranging at least a part of the drive unit 40 below the car 10, the horizontal access from the car 10 to the work object by the drive unit 40 is suppressed. The volume of at least a part of the drive unit 40 arranged on the floor shelf 50 is preferably at least half of the total volume of the drive unit 40, more preferably at least two-thirds, and even more preferably at least three-quarters. In addition, the weight of at least a part of the drive unit 40 arranged on the underfloor shelf 50 is preferably at least half, more preferably at least two-thirds, and even more preferably at least three-quarters of the total weight of the drive unit 40. In the illustrated example, the battery panel 41 and the inverter panel 45, which are large in size and weight, are arranged on the underfloor shelf 50 among the battery panel 41, the inverter panel 45, and the operation panel 47 constituting the drive unit 40. The operation panel 47, which is small in size and weight, is arranged in the car 10. This makes it possible to effectively reduce the area occupied by the drive unit 40 in the car 10. In addition, it is possible to effectively suppress the drive unit 40 from restricting horizontal access from the car 10 to the work target. In addition, as described later, it is possible to effectively adjust the horizontal position of the center of gravity of the gondola device 5.

[0029] The underfloor shelf 50 includes a shelf body 51 and a pair of connecting plates 56a, 56b. The shelf body 51 is connected to the car 10 via the connecting plates 56a, 56b. The shelf body 51 includes a bottom plate 52, a pair of side plates 53a, 53b, and a front plate 54. The bottom plate 52 is disposed vertically spaced apart from the floor portion 12. A space is formed between the bottom plate 52 and the floor portion 12 of the car 10. The bottom plate 52 is connected to the car 10 via a pair of side plates 53a, 53b and a pair of connecting plates 56a, 56b. The bottom plate 52 is disposed within an area surrounded by the edges 12a to 12d of the floor portion 12 when viewed in the vertical direction. This reduces the risk of the underfloor shelf 50 interfering with the goods in the elevator shaft 1 during the ascent and descent of the gondola device 5. The bottom plate 52 supports at least a part of the drive device 40 (in the illustrated example, the battery board 41 and the inverter board 45) from below.

[0030] 6, the bottom plate 52 has a generally rectangular shape and has edges 52a to 52d. The edges 52a and 52b extend along the front-rear direction. The edges 52a and 52b are the right and left edges of the bottom plate 52, respectively. The edges 52c and 52d extend along the left-right direction. The edges 52c and 52d are the rear and front edges of the bottom plate 52, respectively.

[0031] The front plate 54 is attached to a front edge portion 52d of the bottom plate 52. As shown in Fig. 5, the front plate 54 extends upward beyond the bottom plate 52. This prevents the battery board 41 and the inverter board 45 arranged on the bottom plate 52 from sliding forward from the underfloor shelf 50.

[0032] The front plate 54 is detachably attached to the front edge portion 52d of the bottom plate 52. Therefore, by removing the front plate 54 from the bottom plate 52, interference between the front plate 54 and the battery board 41 and the inverter board 45 is prevented when the battery board 41 and the inverter board 45 are placed on or removed from the bottom plate 52. Therefore, the battery board 41 and the inverter board 45 can be easily placed on and removed from the bottom plate 52. In the illustrated example, the front plate 54 is fixed to the bottom plate 52 by fasteners such as bolts.

[0033] It is preferable that the sum of the left-right dimensions of the battery panel 41 and the inverter panel 45 is smaller than the left-right dimension of the elevator entrance 4. This prevents interference between the wall 1a of the hoistway 1 and the battery panel 41 and the inverter panel 45. This makes it easy to load and unload the battery panel 41 and the inverter panel 45 onto and from the bottom plate 52 from the elevator hall.

[0034] In the example shown in Fig. 5, the rear wall 55 is connected to the rear edge 52c of the bottom plate 52. The rear wall 55 extends upward beyond the bottom plate 52. This prevents the battery board 41 and the inverter board 45 arranged on the bottom plate 52 from sliding rearward from the underfloor shelf 50. The rear wall 55 may be formed integrally with the bottom plate 52. The bottom plate 52 and the rear wall 55 may be formed integrally, for example, by bending the rear end of a single metal plate upward. The front plate 54 and the rear wall 55 face each other in the front-rear direction.

[0035] As shown in FIG. 4 and FIG. 6, the pair of horizontal plates 53a, 53b face each other in the left-right direction. The horizontal plates 53a, 53b extend upward from the bottom plate 52. The lower end of the right horizontal plate 53a is connected to the right edge 52a of the bottom plate 52. The lower end of the left horizontal plate 53b is connected to the left edge 52b of the bottom plate 52. The upper ends of the pair of horizontal plates 53a, 53b are fixed to the pair of connecting plates 56a, 56b. In the illustrated example, the horizontal plates 53a, 53b are detachably fixed to the connecting plates 56a, 56b. In the illustrated example, the pair of horizontal plates 53a, 53b are fixed to the connecting plates 56a, 56b using bolts Ba, Bb and nuts Na, Nb. The upper ends of the horizontal plates 53a, 53b are formed with bolt holes h through which the bolts Ba, Bb are inserted. As shown in FIG. 6, the battery board 41 and the inverter board 45 are disposed within a region surrounded by the front plate 54, the rear wall 55, and the pair of side plates 53a, 53b.

[0036] The pair of connecting plates 56a, 56b are fixed to the underside of the floor 12 of the car 10. The pair of connecting plates 56a, 56b extend in the front-rear direction. The pair of connecting plates 56a, 56b face each other in the left-right direction. The right side horizontal plate 53a is connected to the right connecting plate 56a, and the left side horizontal plate 53b is connected to the left connecting plate 56b.

[0037] The connection plates 56a, 56b are formed with bolt holes h through which the bolts Ba, Bb are inserted. In the illustrated example, the connection plates 56a, 56b are formed with a plurality of bolt holes ha-hj aligned in the front-rear direction. This allows the fixing positions of the horizontal plates 53a, 53b (and therefore the shelf body 51) relative to the connection plates 56a, 56b to be changed in the front-rear direction. By changing the fixing positions of the horizontal plates 53a, 53b relative to the connection plates 56a, 56b in the front-rear direction, the positions of the battery panel 41 and the inverter panel 45 in the gondola device 5 can be changed significantly in the front-rear direction. Therefore, the position of the center of gravity of the gondola device 5 can be changed significantly in the front-rear direction. In the illustrated example, as shown in Figures 2A to 2C, the floor portion 12 of the car 10 can be extended backward. When the floor portion 12 is extended backward, the center of gravity of the floor portion 12 moves significantly backward. In this case, by changing the fixed position of the shelf body 51 relative to the connecting plates 56a, 56b to the front, the position of the center of gravity of the gondola device 5 can be prevented from moving backward. As a result, even if the fixed positions of the winders 20a, 20b on the floor part 12 remain unchanged, the gondola device 5 is prevented from tilting backward. Therefore, work can be performed safely. Alternatively, it is possible to prevent an increase in the load applied from the gondola device 5 to the above-mentioned guide rail due to the position of the center of gravity of the gondola device 5 moving backward, and the load applied from the guide rail to the gondola device 5 due to the reaction thereto. As a result, the strength required for the guide rail and the gondola device 5 (particularly the car 10) can be reduced. The weight of the car 10 can be reduced by reducing the strength required for the car 10.

[0038] As shown in FIG. 7, the connecting plates 56a and 56b may be provided with marks Ma to Mc indicating the fixing positions of the shelf body 51 (horizontal plates 53a and 53b) according to the dimension of the floor portion 12 in the front-rear direction. In the example shown in FIG. 7, when the floor portion 12 is formed only of the floor plate 13a, the bolts Ba and Bb are inserted into the bolt holes ha and hd indicated by the mark Ma, and the balance of the gondola device 5 in the front-rear direction is improved. In addition, in the example shown in FIG. 7, when the floor portion 12 is formed of the floor plate 13a and the additional floor plate 13b, the bolts Ba and Bb are inserted into the bolt holes hb and hf indicated by the mark Mb, and the balance of the gondola device 5 in the front-rear direction is improved. In addition, in the example shown in FIG. 7, when the floor portion 12 is formed of the floor plate 13a and the additional floor plates 13b and 13c, the bolts Ba and Bb are inserted into the bolt holes hg and hj indicated by the mark Mc, and the balance of the gondola device 5 in the front-rear direction is improved. The marks Ma to Mc may be formed by, for example, engraving, painting, or sealing. Of course, the fixing positions of the shelf body 51 to the connecting plates 56a and 56b are arbitrary. Therefore, the bolts Ba and Bb for fixing the shelf body 51 may be inserted into the bolt holes hc, he, hh, and hi other than the bolt holes ha, hb, hd, hf, hg, and hj indicated by the marks Ma to Mc.

[0039] Further, in the example shown in FIG. 6, the dimension in the front-rear direction of the bottom plate 52 (in other words, the distance between the front plate 54 and the rear wall 55) is larger than the dimension in the front-rear direction of the battery board 41 and the inverter board 45. This allows the position of the battery board 41 and the inverter board 45 on the underfloor shelf 50 to be adjusted in the front-rear direction, thereby adjusting the position of the center of gravity of the gondola device 5 in the front-rear direction. Also, in the example shown in FIG. 6, the dimension in the left-right direction of the bottom plate 52 (in other words, the distance between the pair of horizontal plates 53a, 53b) is larger than the dimension in the left-right direction of the battery board 41 and the inverter board 45. This allows the position of the battery board 41 and the inverter board 45 on the underfloor shelf 50 to be adjusted in the left-right direction, thereby adjusting the position of the center of gravity of the gondola device 5 in the left-right direction. This also makes it possible to suppress the inclination of the gondola device 5, and to perform work safely. In addition, the strength required for the guide rail and the gondola device 5 (particularly, the car 10) can be reduced. Since the weights of the battery panel 41 and the inverter panel 45 are different from each other, the left-right position of the center of gravity of the gondola device 5 may be adjusted by swapping the left-right positions of the battery panel 41 and the inverter panel 45.

[0040] In the illustrated example, among the battery panel 41, inverter panel 45, and operation panel 47 that constitute the drive device 40, the battery panel 41 and inverter panel 45, which are heavy, are disposed on the underfloor shelf 50. Therefore, the position of the center of gravity of the gondola device 5 can be effectively adjusted by moving the underfloor shelf 50 or by adjusting the position of the drive device 40 on the underfloor shelf 50.

[0041] As described above, the above-mentioned guide rails that stabilize the posture of the gondola device 5 are not present in the elevator shaft 1 at the initial stage of the work using the gondola device 5. According to this embodiment, by moving the underfloor shelf 50 or by adjusting the positions of the battery panel 41 and the inverter panel 45 on the underfloor shelf 50, the gondola device 5 can ascend and descend while maintaining a certain degree of posture even without the guide rails.

[0042] It should be noted that various modifications can be made to the embodiment described above.

[0043] For example, as shown in FIG. 8, the bolt holes h formed in the connecting plates 56a, 56b may be so-called potbellied holes. In this case, the bolt holes have a large diameter hole h1 and a small diameter hole h2. The small diameter hole h2 connects to the large diameter hole h1 from below. The small diameter hole h2 communicates with the large diameter hole h1. The radius of the inscribed circle of the small diameter hole h2 is smaller than the radius of the inscribed circle of the large diameter hole h1. However, the large diameter hole h1 and the small diameter hole h2 both have dimensions that allow the legs of the bolts Ba, Bb to be inserted therethrough. The legs of the bolts Ba, Bb can move in the vertical direction from the large diameter hole h1 to the small diameter hole h2. The small diameter hole h2 is formed at a position appropriate for fastening the bolts Ba, Bb. Since the bolt holes h are potbellied holes, it is easy to insert the bolts Ba, Bb into the bolt holes h. That is, by inserting the bolts Ba, Bb into the large diameter hole h1 having a large dimension, the bolts Ba, Bb can be easily inserted into the bolt hole h. Even if the bolts Ba, Bb are inserted into the large diameter hole h1, the bolts Ba, Bb move into the small diameter hole h2 by gravity, so that the bolts Ba, Bb can be automatically arranged at an appropriate position in the bolt hole h. Therefore, by simply inserting the bolts Ba, Bb assembled to the shelf body 51 (more specifically, the horizontal plates 53a, 53b) into the bolt hole h, the shelf body 51 can be automatically arranged at an appropriate position relative to the connecting plates 56a, 56b by gravity. Then, by screwing the nuts Na, Nb onto the bolts Ba, Bb arranged in the small diameter holes, the shelf body 51 can be appropriately fastened to the connecting plates 56a, 56b. Therefore, the work of attaching the shelf body 51 to the connecting plates 56a, 56b is simplified. That is, there is no need to manually support the shelf body 51 and adjust its position relative to the connecting plates 56a and 56b while screwing the nuts Na, Nb onto the bolts Ba, Bb.

[0044] In the embodiment and its modified example described above, the gondola device 5 includes the car 10, the winders 20a, 20b, the drive unit 40, and the underfloor shelf 50. The winders 20a, 20b are fixed to the car 10 and wind up the wire ropes 2a, 2b that suspend the car 10. The drive unit 40 includes a rechargeable battery 42 and drives the winders 20a, 20b. The underfloor shelf 50 is disposed below the car 10 and supports at least a part 41, 45 of the drive unit 40. This makes it possible to reduce the area occupied by the drive unit 40 in the car 10. Therefore, the work area can be expanded. In addition, by disposing at least a part of the drive unit 40 below the car 10, it is possible to suppress the drive unit 40 from restricting horizontal access from the car 10 to the work target.

[0045] In the embodiment and its modified example described above, the weight of at least the parts 41, 45 of the drive unit 40 arranged on the underfloor shelf 50 is equal to or more than half the total weight of the drive unit 40. This makes it possible to effectively adjust the horizontal position of the center of gravity of the gondola device 5.

[0046] In the embodiment and its modified example described above, the drive device 40 includes a battery panel 41, an inverter panel 45, and an operation panel 47. The battery panel 41 includes a rechargeable battery 42. The inverter panel 45 converts the power output from the rechargeable battery 42 into AC. The operation panel 47 converts the power output from the inverter panel 45 into power suitable for driving the winders 20a and 20b. The battery panel 41 and the inverter panel 45 are arranged on the underfloor shelf 50. By arranging the battery panel 41 and the inverter panel 45, which have large dimensions and weight, on the underfloor shelf 50 among the battery panel 41, the inverter panel 45, and the operation panel 47 that constitute the drive device 40, the area occupied by the drive device 40 in the car 10 can be effectively reduced. In addition, the horizontal position of the center of gravity of the gondola device 5 can be effectively adjusted.

[0047] In the embodiment and its modified example described above, the underfloor shelf 50 includes a shelf body 51. At least a part of the drive unit 40 is disposed in the shelf body 51. The position of the shelf body 51 relative to the car 10 can be changed in the front-rear direction. Also, the position of the center of gravity of the gondola device 5 in the front-rear direction can be effectively adjusted.

[0048] In the embodiment and its modified example described above, the underfloor shelf 50 includes the connection plates 56a, 56b. The connection plates 56a, 56b are fixed to the car 10. The shelf body 51 is fixed to the connection plates 56a, 56b by bolts Ba, Bb. The connection plates 56a, 56b include a plurality of bolt holes ha-hj arranged in the front-rear direction. By changing the bolt holes ha-hj through which the bolts Ba, Bb are inserted, the fixed position of the shelf body 51 relative to the car 10 can be changed in the front-rear direction. In this case, it is easy to adjust the position of the center of gravity of the gondola device 5 in the front-rear direction.

[0049] In addition, in the embodiment and its modified example described above, the dimension of the floor 12 of the car 10 in the front-rear direction can be changed. The underfloor shelf 50 includes connecting plates 56a, 56b. The connecting plates 56a, 56b are fixed to the car 10. The connecting plates 56a, 56b indicate the fixing positions of the shelf body 51 according to the dimension of the floor 12 in the front-rear direction. In this case, it is easy to appropriately adjust the position of the center of gravity of the gondola device 5 in the front-rear direction.

[0050] In the embodiment and its modified example described above, the underfloor shelf 50 includes connecting plates 56a, 56b. The connecting plates 56a, 56b are fixed to the car 10. The shelf body 51 is fixed to the connecting plates 56a, 56b by bolts Ba, Bb. The connecting plates 56a, 56b include bolt holes h. The bolt holes h include a large diameter hole h1 and a small diameter hole h2. The small diameter hole h2 is connected to the large diameter hole h1 from below. In this case, the shelf body 51 can be easily attached to the connecting plates 56a, 56b.

[0051] In the embodiment and its modified example described above, the underfloor shelf 50 includes a bottom plate 52 and a front plate 54. The bottom plate 52 supports at least a part 41, 45 of the drive unit 40 from below. The front plate 54 is connected to the front edge 52d of the bottom plate 52 and extends above the upper surface of the bottom plate 52. The front plate 54 is detachably connected to the front edge 52d of the bottom plate 52. This prevents at least a part 41, 45 of the drive unit 40 arranged on the bottom plate 52 from sliding forward from the underfloor shelf 50. In addition, if the front plate 54 is removed from the bottom plate 52, interference between the front plate 54 and at least a part 41, 45 of the drive unit 40 is prevented when the at least a part 41, 45 of the drive unit 40 is arranged on the bottom plate 52 or when the at least a part 41, 45 of the drive unit 40 is removed from the bottom plate 52. Therefore, it is easy to place at least a part 41, 45 of the drive unit 40 on and off the bottom plate 52.

[0052] In the embodiment and its modified example described above, the underfloor shelf 50 includes a bottom plate 52 and a rear wall 55. The bottom plate 52 supports at least the parts 41, 45 of the drive unit 40 from below. The rear wall 55 is connected to a rear edge 52c of the bottom plate 52 and extends above the upper surface of the bottom plate 52. This prevents at least the parts 41, 45 of the drive unit 40 arranged on the bottom plate 52 from sliding backward from the underfloor shelf 50.

[0053] In the embodiment and its modified example described above, the underfloor shelf 50 includes a bottom plate 52. The bottom plate 52 supports at least a portion 41, 45 of the drive device 40 from below. The dimension of the bottom plate 52 in the front-rear direction is greater than the dimension of at least a portion 41, 45 of the drive device 40 in the front-rear direction. In this case, by adjusting the position of at least a portion 41, 45 of the drive device 40 on the bottom plate 52 in the front-rear direction, the position of the center of gravity of the gondola device 5 in the front-rear direction can be adjusted.

[0054] Moreover, the embodiment and its modified example described above include a bottom plate 52. The bottom plate 52 supports at least the parts 41, 45 of the drive device 40 from below. The left-right dimension of the bottom plate 52 is larger than the left-right dimension of at least the parts 41, 45 of the drive device 40. In this case, by adjusting the position of at least the parts 41, 45 of the drive device 40 on the bottom plate 52 in the left-right direction, the position of the center of gravity of the gondola device 5 in the left-right direction can be adjusted.

[0055] Although the embodiments and some modifications of the present invention have been described, these embodiments and modifications are presented as examples and are not intended to limit the scope of the invention. These new embodiments and modifications can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. In addition, it is of course possible to combine these embodiments and modifications in part as appropriate within the spirit of the present invention. [Explanation of symbols]

[0056] 1: elevator shaft, 2a, 2b: first wire rope, 5: gondola device, 6: ceiling, 10: car, 11: entrance, 12: floor, 14: handrail, 20a, 20b: winder, 40: drive unit, 41: battery panel, 45: inverter panel, 47: operation panel, 50: underfloor shelf, 51: shelf body, 52: bottom plate, 53a, 53b: side plate, 54: front plate, 55: rear wall, 56a, 56b: connection plate, Ba, Bb: bolt, h: bolt hole, Ma, Mb, Mc: mark

Claims

1. A car, a winder that is fixed to the car and winds up a wire rope that suspends the car; A drive device including a rechargeable battery for driving the winder; A floor shelf is disposed below the car and supports at least a part of the drive device. The underfloor shelf includes a shelf body on which at least a portion of the drive device is disposed, A gondola device in which the position of the shelf body relative to the car can be changed in the forward / backward direction.

2. A car, a winder that is fixed to the car and winds up a wire rope that suspends the car; A drive device including a rechargeable battery for driving the winder; A floor shelf is disposed below the car and supports at least a part of the drive device. The underfloor shelf includes a bottom plate that supports at least a portion of the drive device from below, and a front plate that is connected to a front edge of the bottom plate and extends above an upper surface of the bottom plate, A gondola apparatus, wherein the front plate is removably connected to a front edge of the bottom plate.

3. The gondola device according to claim 1 or 2, wherein a weight of at least a portion of the drive device arranged on the underfloor shelf is equal to or greater than half of a total weight of the drive device.

4. The drive device includes a battery panel including the rechargeable battery, an inverter panel that converts the power output from the rechargeable battery into AC, and an operation panel that converts the power output from the inverter panel into power suitable for driving the winder, The gondola apparatus according to claim 1 or 2, wherein the battery panel and the inverter panel are arranged on the underfloor shelf.

5. The underfloor shelf includes a connection plate fixed to the car, The shelf body is fixed to the connecting plate by a bolt, The connection plate includes a plurality of bolt holes aligned in the front-rear direction, The gondola apparatus according to claim 1 , wherein the fixed position of the shelf body relative to the car can be changed in the front-rear direction by changing the bolt holes through which the bolts are inserted.

6. The dimension of the floor of the car in the front-rear direction can be changed, The underfloor shelf includes a connection plate fixed to the car, The gondola device according to claim 1 , wherein the connecting plate indicates a fixing position of the shelf body according to the front-to-rear dimension of the floor portion.

7. The underfloor shelf includes a connection plate fixed to the car, The shelf body is fixed to the connecting plate by a bolt, the connecting plate includes a bolt hole; The gondola apparatus according to claim 1 , wherein the bolt holes include a large diameter hole and a small diameter hole connected to the large diameter hole from below.

8. The underfloor shelf includes a bottom plate that supports at least a portion of the drive device from below, and a front plate that is connected to a front edge of the bottom plate and extends above an upper surface of the bottom plate, The gondola apparatus of claim 1 , wherein the front panel is removably connected to a front edge of the bottom panel.

9. The gondola device described in claim 1 or 2, wherein the underfloor shelf includes a bottom plate that supports at least a portion of the drive mechanism from below, and a rear wall that is connected to a rear edge of the bottom plate and extends above an upper surface of the bottom plate.

10. The underfloor shelf includes a bottom plate that supports at least a portion of the drive device from below, The gondola apparatus according to claim 1 or 2, wherein the front-to-rear dimension of the bottom plate is greater than the front-to-rear dimension of at least a portion of the drive mechanism.

11. The underfloor shelf includes a bottom plate that supports at least a portion of the drive device from below, The gondola apparatus according to claim 1 or 2, wherein the left-right dimension of the bottom plate is larger than the left-right dimension of at least a portion of the drive mechanism.

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