Elevator car and balance adjustment method of elevator car

Abstract

To provide an elevator car which enables easy attachment / detachment of a balance weight 1, and to provide a balance adjustment method of the elevator car.SOLUTION: In a car 102 of an elevator 101 according to the disclosure, one or more balance weights 1 are disposed at rib parts 102g provided at a canopy 102e of a car body 102a. Each balance weight 1 can be fixed by using a plurality of rib through holes formed at each rib part 102g.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to elevator cars and methods for balancing elevator cars. [Background technology]

[0002] Conventionally, a balance weight disposed at the bottom of an elevator car is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-220893 A Summary of the Invention [Problem to be solved by the invention]

[0004] With conventional balance weights, in order to increase or decrease the balance weight, work must be done on the bottom of the car, so work must be done inside a pit. If the pit is deep, it is necessary to set up scaffolding inside the pit, which creates the problem that it is not easy to attach and remove the balance weight.

[0005] SUMMARY OF THE DISCLOSURE The present disclosure aims to provide an elevator car and a method for balancing an elevator car to solve the above problems. [Means for solving the problem]

[0006] The elevator car of the present disclosure includes a car body having a canopy, side walls, and a bottom plate, and one or more balance weights attached to the canopy, the balance weights being attached directly to the canopy.

[0007] The elevator car balancing method according to the present disclosure includes a center of gravity position calculation step for calculating the center of gravity position of the elevator car of the present disclosure when viewed vertically, a balance adjustment calculation step that is performed after the center of gravity position calculation step for calculating positions for placing balance weights so that the center of gravity position is within an allowable position range and the number of balance weights, and a balance adjustment step for placing the required number of balance weights at predetermined positions based on the calculation results of the balance adjustment calculation step. Effect of the Invention

[0008] The elevator car and elevator car balancing method disclosed herein allow for easy installation and removal of balance weights. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing an elevator according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing the upper part of the car of FIG. 1. [Diagram 3] FIG. 3 is a schematic diagram showing the canopy panel of FIG. 2. [Figure 4] FIG. 3 is a schematic diagram showing a detail of the upper part of the car of FIG. 2. [Diagram 5] FIG. 2 is a schematic diagram showing a balance weight of FIG. 1. [Figure 6] FIG. 2 is a flow diagram showing a method for adjusting the balance of an elevator car according to the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Embodiment 1 FIG 2 is a schematic diagram showing an elevator 101 according to the embodiment 1. FIG 2 is a perspective view showing an upper part of a car 102 in FIG 1. In FIG 2, the illustration of a hanging rope 106 is omitted.

[0011] An elevator 101 is installed in a building 100. A vertically extending elevator shaft 100a is formed in the building 100.

[0012] The elevator 101 has one car 102, an elevator control device 103, a hoist 104, a counterweight 105, and a hoisting rope 106. One end of the hoisting rope 106 is connected to the car 102, and the other end is connected to the counterweight 105. The hoisting rope 106 is wound around the hoist 104.

[0013] The elevator control device 103 controls the hoist 104 to move the suspending rope 106, thereby moving the car 102. The car 102 can move in the vertical direction within the hoistway 100a.

[0014] The car 102 has a car body 102a, a car door 102b, and a car frame 102c that supports the car body 102a. The car body 102a has a rectangular parallelepiped shape, and users of the elevator 101 can board the car body 102a.

[0015] The car body 102a has side walls 102d surrounding the four sides, a canopy 102e constituting the ceiling, and a bottom plate 102f constituting the bottom. The interior of the car body 102a is a space surrounded by the side walls 102d, the canopy 102e, and the bottom plate 102f.

[0016] An opening is formed in the side wall 102d inside the car body 102a, which serves as a passage for users to get on and off the elevator 101. The car door 102b can close the opening formed in the side wall 102d.

[0017] The canopy 102e is formed with a plurality of rib portions 102g that protrude in the normal direction of the surface of the canopy 102e. The rib portions 102g are formed in stripes and are parallel to each other.

[0018] Canopy 102e is made up of multiple canopy panels 110. In the present embodiment 1, there are five canopy panels 110. However, the number of canopy panels 110 that make up canopy 102e is not limited to five.

[0019] The five canopy panels 110 are connected and secured to one another along their longitudinal edges. Each rib 102g is a connection point between adjacent canopy panels 110. Four ribs 102g are shown in FIG. 2.

[0020] A plurality of balance weights 1 and a plurality of devices are installed above the ceiling portion of the car body 102a, i.e., the canopy 102e. The balance weights 1 are plates. The plurality of balance weights 1 are arranged and fixed on the rib portion 102g in a stacked state. The structure of the balance weights 1 and the rib portion 102g, and the arrangement and fixing of the balance weights 1 to the rib portion 102g will be explained later.

[0021] The cage frame 102c is disposed around the cage body 102a along the bottom plate 102f, both side walls 102d, and the canopy 102e of the cage body 102a. One end of a hanging rope 106 is connected to the cage frame 102c. The cage body 102a is hung from the hanging rope 106 via the cage frame 102c.

[0022] Fig. 3 is a schematic diagram showing the canopy panel 110 of Fig. 2. The canopy panel 110 includes a canopy panel body 111. The canopy panel body 111 is a rectangular plate, and has a first edge 112 formed at one end along the longitudinal direction of the canopy panel body 111, and a second edge 113 formed at the other end different from the one end along the longitudinal direction of the canopy panel body 111.

[0023] First edge portion 112 is formed along one entire longitudinal end portion of canopy panel main body 111. First edge portion 112 is composed of a first vertical portion 112a and a first horizontal portion 112b.

[0024] First vertical portion 112a continues from one end along the longitudinal direction of canopy panel main body 111 and extends along the normal direction of the surface of canopy panel main body 111. That is, first vertical portion 112a is continuous with canopy panel main body 111 at one end along the longitudinal direction of first vertical portion 112a.

[0025] A first horizontal portion 112b extends continuously from one end along the longitudinal direction of first vertical portion 112a, which is opposed to one end along the longitudinal direction of first vertical portion 112a. First horizontal portion 112b extends from the other end along the longitudinal direction of first vertical portion 112a in a direction along the surface of canopy panel main body 111. First horizontal portion 112b extends in a direction away from canopy panel main body 111, i.e., toward the outside in the width direction of canopy panel 110.

[0026] When viewed in a direction along the longitudinal direction of canopy panel 110, canopy panel body 111 and first edge portion 112 form a Z-shape.

[0027] A plurality of first through holes 112c are formed in the first horizontal portion 112b. The first through holes 112c are formed at predetermined intervals along the longitudinal direction of the first horizontal portion 112b. The first through holes 112c function as rib through holes, which will be described later.

[0028] The second edge 113 is formed over the entirety of one end along the longitudinal direction of the canopy panel main body 111 and the other end opposite the one end. In other words, the second edge 113 is formed at the end opposite the end where the first edge 112 of the canopy panel main body 111 is formed.

[0029] The second edge portion 113 is composed of a second vertical portion 113a and a second horizontal portion 113b. The second vertical portion 113a extends along the normal direction of the surface of the canopy panel main body 111, continuing from one end portion along the longitudinal direction of the canopy panel main body 111 and the other end portion facing the other end portion. That is, the second vertical portion 113a is continuous with the canopy panel main body 111 at one end portion along the longitudinal direction of the second vertical portion 113a.

[0030] A second horizontal portion 113b extends continuously from one end along the longitudinal direction of second vertical portion 113a, which is opposed to one end along the longitudinal direction of second vertical portion 113a. Second horizontal portion 113b extends from the other end along the longitudinal direction of second vertical portion 113a in a direction along the surface of canopy panel main body 111. Second horizontal portion 113b extends toward the center portion of canopy panel main body 111, i.e., toward the inside in the width direction of canopy panel 110.

[0031] When viewed in a direction along the longitudinal direction of canopy panel 110, canopy panel main body 111 and second edge portion 113 form a C-shape.

[0032] A plurality of second through holes 113c are formed in the second horizontal portion 113b. The second through holes 113c are formed at predetermined intervals along the longitudinal direction of the second horizontal portion 113b. The second through holes 113c function as rib through holes, which will be described later.

[0033] The first horizontal portion 112b and the second horizontal portion 113b extend in the same direction.

[0034] Fig. 4 is a schematic diagram showing details of the upper part of the cage 102 of Fig. 2. Fig. 4 shows a part of the canopy 102e. Two adjacent canopy panels 110 are connected and fixed to each other.

[0035] Of two adjacent canopy panels 110, the first vertical portion 112a of one canopy panel 110 faces and abuts the second vertical portion 113a of the other canopy panel 110. The first horizontal portion 112b of one canopy panel 110 faces and abuts the second horizontal portion 113b of the other canopy panel 110. The first horizontal portion 112b of one canopy panel 110 and the second horizontal portion 113b of the other canopy panel 110 overlap in the vertical direction.

[0036] In the area where the balance weight 1 is not placed, the first horizontal portion 112b of one canopy panel 110 and the second horizontal portion 113b of the other canopy panel 110 in the overlapping state are fixed with a connecting member 120 consisting of a bolt and a nut. Each bolt is inserted into the first through hole 112c and the corresponding second through hole 113c, and is fastened and fixed with a nut. In this way, the adjacent canopy panels 110 are fixed to each other.

[0037] When adjacent canopy panels 110 are fixed to each other, rib portion 102g has a rib horizontal portion 102h having a surface parallel to the horizontal plane. That is, rib horizontal portion 102h is composed of a first horizontal portion 112b and a second horizontal portion 113b.

[0038] In Fig. 4, three stacked balance weights 1 are placed across two rib portions 102g and on a rib horizontal portion 102h. A plurality of rib through holes are formed in the rib horizontal portion 102h, passing through the rib horizontal portion 102h in the vertical direction. Each rib through hole is a first through hole 112c and a second through hole 113c, which correspond to each other.

[0039] The bolts of the connecting member 120 are inserted into the balance weight through holes 1a, the corresponding first through holes 112c, and the corresponding second through holes 113c formed in each of the three stacked balance weights 1, and the balance weights are fastened and fixed by the nuts of the connecting member 120. That is, the stacked balance weights 1 are directly attached to the canopy 102e.

[0040] In this way, the three stacked balance weights 1 and the adjacent canopy panels 110 constituting the rib portion 102g are fixed to each other. The balance weight 1 will be described in detail later.

[0041] In the first embodiment, the balance weight 1 is large enough to straddle adjacent rib portions 102g at the same time.

[0042] Fig. 5 is a schematic diagram showing the balance weight 1 of Fig. 1. As shown in Fig. 5(a), balance weight through holes 1a are formed at the four corners of the balance weight 1. The balance weight through holes 1a have a size and shape corresponding to the first through hole 112c and the second through hole 113c, respectively.

[0043] Various sizes and shapes can be adopted for the balance weight 1. Fig. 5 shows a balance weight 1 whose length in the depth direction is longer than the distance between adjacent rib through holes formed in the longitudinal direction of one rib portion 102g.

[0044] 5(a) and 5(b) show a balance weight 1 whose widthwise length is the same as the distance between two adjacent rib portions 102g of a canopy 102e.

[0045] The depth direction of the balance weight 1 is the direction of the balance weight 1 along the longitudinal direction of the rib portion 102g when the balance weight 1 is fixed to the canopy 102e. The width direction of the balance weight 1 is the direction of the balance weight 1 that is perpendicular to the depth direction of the balance weight 1.

[0046] As shown in FIG. 5(b), the balance weight through holes 1a formed at the four corners of the balance weight 1 may be elongated holes extending in the depth direction of the balance weight 1.

[0047] 5(c) and 5(d) show a balance weight 1 whose widthwise length is longer than the distance between two adjacent rib portions 102g of a canopy 102e.

[0048] As shown in FIG. 5(c), the balance weight through holes 1a formed at the four corners of the balance weight 1 may be elongated holes extending along the width direction of the balance weight 1.

[0049] As shown in FIG. 5(d), the balance weight through holes 1a formed in the four corners of the balance weight 1 may be elongated holes whose longitudinal direction is inclined with respect to the width direction and depth direction of the balance weight 1.

[0050] Figures 5(e), 5(f), 5(g), and 5(h) show balance weights 1 whose widthwise length is shorter than the distance between two adjacent rib portions 102g of the canopy 102e. Two balance weight through holes 1a are formed in these balance weights 1. That is, these balance weights 1 can be placed and fixed on one rib portion 102g.

[0051] Figures 5(f), 5(g), and 5(h) show a balance weight 1 in which two balance weight through holes 1a, which are elongated holes, are formed. The longitudinal directions of the two balance weight through holes 1a are all in the same direction. The longitudinal direction of the elongated holes can be appropriately selected taking into account the center of gravity of the balance weight 1.

[0052] The shape of the balance weight 1 may also be a shape not shown in Fig. 5. For example, the length in the depth direction of the balance weight 1 may be shorter than the interval between adjacent rib through holes formed in the longitudinal direction of one rib portion 102g. In this case, only one balance weight through hole 1a may be formed aligned in the depth direction of the balance weight 1.

[0053] Also, for example, the length in the depth direction of the balance weight 1 may be longer than the distance between the two outer first through holes 112c among the three first through holes 112c aligned along the longitudinal direction of the rib portion 102g. In this case, three balance weight through holes 1a aligned in the depth direction of the balance weight 1 may be formed.

[0054] Furthermore, the width of the balance weight 1 may be increased so that the balance weight 1 can be disposed across three or more rib portions 102g. In this case, three or more balance weight through holes 1a may be formed in the balance weight 1 aligned in the width direction.

[0055] The balance weight 1 can be fixed using the desired corresponding first through hole 112c and second through hole 113c as desired rib through holes of the desired rib portion 102g, so that the attachment position can be adjusted.

[0056] Next, a method for adjusting the balance of the car 102 of the elevator 101 according to the present disclosure will be described. Fig. 6 is a flow diagram showing the method for adjusting the balance of the car 102 of the elevator 101 according to the first embodiment.

[0057] In the elevator 100a, the movement of the car 102 is guided by a guide rail (not shown). At this time, it is necessary to adjust the balance of the car 102 so that the car 102 contacts the guide rail without being biased.

[0058] In particular, when the equipment installed in the car 102 is made smaller and lighter through renovation work, if the balance of the car 102 before the renovation work remains the same, there is a high possibility that the car 102 will come into contact with the guide rail unevenly. Therefore, it is necessary to adjust the balance of the car 102.

[0059] First, a center of gravity position calculation process is performed in step S01. The center of gravity position calculation process is a process for determining the center of gravity position of the car 102 when the car 102 is viewed in the vertical direction. Various devices are attached to the car 102 at their respective positions, and the center of gravity position of the car 102 is calculated based on the weight and attachment position of each device.

[0060] Next, a balance adjustment calculation step in step S02 is performed. The balance adjustment calculation step is performed after the center of gravity position calculation step. The balance adjustment calculation step is a step of calculating the positions and the number of balance weights 1 to be arranged so that the center of gravity position calculated in the center of gravity position calculation step is within an allowable position range.

[0061] The position of the center of gravity of the car 102 must be within an allowable position range when viewed from the vertical direction. For example, if the car 102 is moved in a state where the position of the center of gravity is not within the allowable position range, the car 102 may come into contact with the guide rail in an uneven manner.

[0062] If the car 102 contacts the guide rail unevenly, the need for maintenance increases, and more frequent part replacement becomes necessary. In addition, there is a risk of vibration and noise being generated when the car 102 moves, which may adversely affect the ride comfort of the elevator 101.

[0063] Therefore, it is necessary to make the position of the center of gravity of the car 102 exist within an allowable position range. The allowable position range is a range within which, as long as the position of the center of gravity of the car 102 exists, the above-mentioned problems due to imbalance of the car 102 do not occur.

[0064] In the balance adjustment calculation process, the positions and quantity of the balance weights 1 are calculated so that the center of gravity position is within the allowable position range. After the positions and quantity of the balance weights 1 are calculated, the process proceeds to the next step.

[0065] Next, a balance adjustment process in step S03 is performed. The balance adjustment process is performed after the balance adjustment calculation process. In the balance adjustment process, the balance weight 1 is arranged on the car 102 based on the calculation result in the balance adjustment calculation process.

[0066] The worker stands on top of the car 102 and places the required number of balance weights 1 at the calculated positions. After that, the balance weights 1 are fixed to the rib portions 102g by the connecting members 120. This completes the balance adjustment of the car 102.

[0067] Here, in the center of gravity position calculation step and the balance adjustment calculation step, the results may be calculated manually or by computer.

[0068] According to the car 102 of the elevator 101 in the first embodiment, the car body 102a has a canopy 102e, a side wall 102d, and a bottom plate 102f, and one or more balance weights 1 attached to the canopy 102e. The balance weights 1 are attached directly to the canopy 102e. This allows the balance weights 1 to be placed on the top of the car 102. Therefore, the balance weights 1 can be easily attached and removed. For example, when the equipment attached to the car 102 is downsized due to renovation work and the balance of the car 102 needs to be readjusted, the installation of the balance weights 1 is performed on the car 102, and the work can be easily performed. The balance weights 1 can be placed at any location on the canopy 102e, and the balance of the car 102 can be finely adjusted.

[0069] According to the car 102 of the elevator 101 in the first embodiment, the balance weight 1 is a plate, and a plurality of balance weights 1 can be attached in a stacked state to the canopy 102e. This allows many balance weights 1 to be arranged using the minimum necessary space.

[0070] According to the car 102 of the elevator 101 in the first embodiment, the balance weight 1 is attached to one or more rib portions 102g formed on the canopy 102e. As a result, the balance weight 1 is attached to a portion of the canopy 102e that has a relatively high strength. Therefore, there is little risk that the installation of the balance weight 1 will cause distortion or the like in the canopy 102e. Also, as a result, no attachment trace of the balance weight 1 appears on the underside of the canopy 102e. Therefore, for example, even if the underside of the canopy 102e is exposed to the interior of the car 102, the design of the interior of the car 102 is not affected.

[0071] According to car 102 of elevator 101 in embodiment 1, canopy 102e has two or more canopy panels 110, and rib portion 102g is a portion where adjacent canopy panels 110 are connected to each other. This allows balance weight 1 to be installed on rib portion 102g that has a strength that matches the connection strength of adjacent canopy panels 110. Therefore, even if a relatively heavy balance weight 1 is installed, there is little risk of distortion or the like occurring in canopy 102e.

[0072] According to the car 102 of the elevator 101 in the first embodiment, the rib portion 102g is formed with a rib side portion 102h having a surface parallel to the horizontal plane. The rib side portion 102h is also formed with a first through hole 112c and a second through hole 113c as rib through holes that penetrate the rib side portion 102h in the vertical direction. The balance weight 1 is also formed with a balance weight through hole 1a having a shape corresponding to the rib through hole. The balance weight 1 is fixed to the rib portion 102g by using the balance weight through hole 1a and the rib through hole. This allows the balance weight 1 to be fixed to the rib portion 102g by using the balance weight through hole 1a and the rib through hole while the balance weight 1 is placed on the rib side portion 102h. Therefore, the balance weight 1 can be fixed to the rib portion 102g more stably. This also eliminates the need to prepare mounting members for the balance weight 1, and allows the balance weight 1 to be easily attached to the canopy 102e.

[0073] According to the car 102 of the elevator 101 in the first embodiment, the depth direction of the balance weight 1 is set along the longitudinal direction of the rib portion 102g when the balance weight 1 is fixed to the canopy 102e. The width direction of the balance weight 1 is set perpendicular to the depth direction of the balance weight 1. The length of the width direction of the balance weight 1 is equal to or longer than the distance between the adjacent rib portions 102g. This allows the balance weight 1 to be arranged in a state in which it straddles the two adjacent rib portions 102g. That is, the balance weight 1 can be fixed to the canopy 102e in a more stable state. This also allows the weight of the balance weight 1 to be distributed and supported by the multiple rib portions 102g. Therefore, deformation of the rib portion 102g due to the weight of the balance weight 1 can be suppressed.

[0074] According to the car 102 of the elevator 101 in the first embodiment, the length of the balance weight 1 in the width direction is longer than the interval between the adjacent rib portions 102g. Also, the balance weight through hole 1a is a long hole along the width direction of the balance weight 1. This allows a larger balance weight 1 to be placed in the canopy 102e. Therefore, the balance of the car 102 can be changed significantly. Therefore, the balance of the car 102 can be adjusted more easily. Also, this allows the position where the balance weight 1 is placed to be finely adjusted by utilizing the balance weight through hole 1a, which is a long hole. Therefore, the balance of the car 102 can be adjusted more finely.

[0075] According to the car 102 of the elevator 101 in the first embodiment, the length of the balance weight 1 in the width direction is longer than the interval between the adjacent rib portions 102g. Also, the balance weight through hole 1a is a long hole along a direction inclined with respect to the width direction of the balance weight 1. This allows a larger balance weight 1 to be placed in the canopy 102e. Therefore, the balance of the car 102 can be changed significantly. Therefore, the balance of the car 102 can be adjusted more easily. Also, this allows the position where the balance weight 1 is placed to be finely adjusted by using the balance weight through hole 1a, which is a long hole. Also, this allows the balance weight 1 to be moved in a direction inclined with respect to the longitudinal direction of the rib portion 102g to finely adjust the position where the balance weight 1 is placed. Therefore, the balance of the car 102 can be adjusted more finely.

[0076] According to the car 102 of the elevator 101 in the first embodiment, the first through hole 112c and the second through hole 113c are formed as rib through holes at a predetermined interval along the longitudinal direction of the rib portion 102g in each rib portion 102g. This also makes it possible to change the position where the balance weight 1 is arranged along the longitudinal direction of the rib portion 102g. Therefore, the balance of the car 102 can be efficiently adjusted.

[0077] According to the car 102 of the elevator 101 in the first embodiment, the balance weight through hole 1a is a long hole along the depth direction of the balance weight 1. This allows fine adjustment of the position of the balance weight 1 by utilizing the long balance weight through hole 1a. Therefore, the balance of the car 102 can be adjusted more finely.

[0078] According to the car 102 of the elevator 101 in the first embodiment, the depth direction of the balance weight 1 is set along the longitudinal direction of the rib portion with the balance weight 1 fixed to the canopy 102e. The width direction of the balance weight 1 is set to a direction perpendicular to the depth direction of the balance weight 1. In this case, the width direction length of the balance weight 1 is shorter than the distance between the adjacent rib portions 102g. This makes it possible to adjust the balance of the car 102 using the balance weight 1 that is short in the width direction and lightweight. Therefore, the balance of the car 102 can be adjusted more finely.

[0079] According to the car 102 of the elevator 101 in the first embodiment, the balance weight 1 having a widthwise length shorter than the interval between adjacent rib portions 102g has a balance weight through hole 1a that is a long hole. This allows the position of the balance weight 1 to be finely adjusted by utilizing the balance weight through hole 1a that is a long hole. Therefore, the balance of the car 102 can be adjusted more finely.

[0080] The balance adjustment method for the car 102 of the elevator 101 in the first embodiment includes a center of gravity position calculation step for calculating the center of gravity position of the car 102 of the elevator 101 of the present disclosure when viewed from the vertical direction, a balance adjustment calculation step, and a balance adjustment step. The balance adjustment calculation step is performed after the center of gravity position calculation step, and calculates the positions at which the balance weights 1 are to be placed and the number of balance weights 1 so that the center of gravity position is within an allowable position range. The balance adjustment step places the required number of balance weights 1 at predetermined positions based on the calculation results of the balance adjustment calculation step. This makes it possible to place the desired number of balance weights 1 at desired positions on the upper part of the car 102. Therefore, the balance weights 1 can be easily attached and removed.

[0081] In addition, the rib portion 102g in the first embodiment is formed at the portion where the adjacent canopy panels 110 are connected. However, this is not limited to this. The rib portion 102g may be, for example, a rib portion formed only for the purpose of increasing the strength of the canopy 102e. Also, the rib portion 102g does not have to be formed from one end to the other end of the canopy 102e.

[0082] Moreover, the balance weight 1 in the first embodiment has a flat surface. However, this is not limited to this. For example, the surface of the balance weight 1 may have an uneven shape.

[0083] According to the car 102 of the elevator 101 in the first embodiment, an uneven shape is formed on the surface of the balance weight 1. This makes it possible to provide an anti-slip effect on the surface of the balance weight 1. Therefore, the safety of the workers can be further ensured.

[0084] Moreover, the balance weight 1 in the first embodiment is a plate. However, this is not limited thereto. For example, the balance weight 1 may be in the shape of a rectangular parallelepiped or a sphere processed so as not to roll. Furthermore, each balance weight 1 may have a handle. This allows the worker to easily carry the balance weight 1 using the handle. The worker does not need to prepare a separate tool for carrying the balance weight 1, and the work efficiency can be improved.

[0085] Moreover, each of the balance weights 1 in the first embodiment is a uniform plate. However, this is not limited to this. There may be multiple types of balance weights 1. For example, balance weights 1 that have holes drilled into them to reduce their weight, balance weights 1 with different thicknesses, or balance weights 1 made of different materials may be prepared. This makes it possible to prepare balance weights 1 with different masses. Therefore, more precise balance adjustments can be made.

[0086] Moreover, the balance weight 1 in the first embodiment has a flat surface. However, this is not limited to this. For example, a convex portion may be formed on the surface of the balance weight 1, and a concave portion may be formed on the back surface of the balance weight 1. In this way, when multiple balance weights 1 are stacked, the convex portion fits into the concave portion, reducing the occurrence of misalignment between the balance weights 1, and allowing multiple balance weights 1 to be arranged more stably.

[0087] Various aspects of the present disclosure are summarized below as appendices.

[0088] (Appendix 1) A cage body having a canopy, side walls, and a bottom plate; one or more balance weights attached to the canopy; Equipped with The balance weight is attached directly to the canopy. Elevator car. (Appendix 2) The balance weight is a plate, A plurality of the balance weights can be attached to the canopy in a stacked state. An elevator car as described in Appendix 1. (Appendix 3) The surface of the balance weight is formed with an uneven shape. An elevator car as described in Appendix 1 or Appendix 2. (Appendix 4) The balance weight is attached to one or more ribs formed on the canopy. 1. An elevator car according to any one of claims 1 to 3. (Appendix 5) the canopy has two or more canopy panels; The rib portion is where adjacent canopy panels are connected to each other. An elevator car as described in Appendix 4. (Appendix 6) The rib portion is formed with a rib lateral portion having a surface parallel to a horizontal plane, A rib through hole is formed in the rib horizontal portion so as to pass through the rib horizontal portion in a vertical direction, The balance weight has a balance weight through hole formed therein, the balance weight having a shape corresponding to the rib through hole, The balance weight is fixed to the rib portion by utilizing the balance weight through hole and the rib through hole. 13. An elevator car according to claim 4 or 5. (Appendix 7) When the balance weight is fixed to the canopy, the depth direction of the balance weight is the direction along the longitudinal direction of the rib portion, and the width direction of the balance weight is the direction perpendicular to the depth direction of the balance weight. The width direction length of the balance weight is equal to or greater than the distance between adjacent rib portions. An elevator car as described in Appendix 6. (Appendix 8) The length of the balance weight in the width direction is longer than the interval between the adjacent rib portions, The balance weight through hole is a long hole along the width direction of the balance weight. An elevator car as described in Appendix 7. (Appendix 9) The length of the balance weight in the width direction is longer than the interval between the adjacent rib portions, The balance weight through hole is a long hole extending in a direction inclined with respect to the width direction of the balance weight. An elevator car as described in Appendix 7. (Appendix 10) The rib through holes are formed in each of the rib portions at predetermined intervals along the longitudinal direction of the rib portion. 10. An elevator car according to any one of claims 6 to 9. (Appendix 11) The balance weight through hole is a long hole along the depth direction of the balance weight. 11. An elevator car according to any one of claims 6 to 10. (Appendix 12) When the balance weight is fixed to the canopy, the depth direction of the balance weight is the direction along the longitudinal direction of the rib portion, and the width direction of the balance weight is the direction perpendicular to the depth direction of the balance weight. The length of the balance weight in the width direction is shorter than the interval between adjacent rib portions. An elevator car as described in Appendix 6. (Appendix 13) The balance weight through hole is a long hole. An elevator car as described in Appendix 12. (Appendix 14) A center-of-gravity position calculation step of calculating a center-of-gravity position of the elevator car according to any one of Supplementary Note 1 to Supplementary Note 13 when viewed from a vertical direction; a balance adjustment calculation step, which is carried out after the center of gravity position calculation step, for calculating positions at which the balance weights are to be disposed and the number of the balance weights so that the center of gravity position is within an allowable position range; a balance adjustment step of arranging a required number of the balance weights at predetermined positions based on the calculation result of the balance adjustment calculation step; A method for balancing an elevator car equipped with the device. [Explanation of symbols]

[0089] 1 Balance weight, 1a Balance weight through hole, 100 Building, 100a Hoistway, 101 Elevator, 102 Cage, 102a Cage body, 102b Cage door, 102c Cage frame, 102d Side wall, 102e Canopy, 102f Bottom plate, 102g Rib portion, 102h Rib horizontal portion, 103 Elevator control device, 104 Hoist, 105 Counterweight, 106 Suspension rope, 110 Canopy panel, 111 Canopy panel body, 112 First edge portion, 112a First vertical portion, 112b First horizontal portion, 112c First through hole (rib through hole), 113 Second edge portion, 113a Second vertical portion, 113b Second horizontal portion, 113c Second through hole (rib through hole), 120 Connecting member.

Claims

1. A cage body having a canopy, side walls, and a bottom plate; one or more balance weights attached to the canopy; Equipped with The balance weight is attached directly to the canopy. Elevator car.

2. The balance weight is a plate, A plurality of the balance weights can be attached to the canopy in a stacked state.

2. The elevator car of claim 1.

3. The surface of the balance weight is formed with an uneven shape.

2. The elevator car of claim 1.

4. The balance weight is attached to one or more ribs formed on the canopy.

2. The elevator car of claim 1.

5. the canopy has two or more canopy panels; The rib portion is where adjacent canopy panels are connected to each other.

5. The elevator car of claim 4.

6. The rib portion is formed with a rib lateral portion having a surface parallel to a horizontal plane, The rib lateral portion has a rib through hole formed therein, the rib through hole passing through the rib lateral portion in a vertical direction, The balance weight has a balance weight through hole formed therein, the balance weight having a shape corresponding to the rib through hole, The balance weight is fixed to the rib portion by utilizing the balance weight through hole and the rib through hole.

5. The elevator car of claim 4.

7. When the balance weight is fixed to the canopy, the depth direction of the balance weight is the direction along the longitudinal direction of the rib portion, and the width direction of the balance weight is the direction perpendicular to the depth direction of the balance weight. The width direction length of the balance weight is equal to or greater than the distance between adjacent rib portions.

7. The elevator car of claim 6.

8. The length of the balance weight in the width direction is longer than the interval between the adjacent rib portions, The balance weight through hole is a long hole along the width direction of the balance weight.

8. An elevator car according to claim 7.

9. The length of the balance weight in the width direction is longer than the interval between the adjacent rib portions, The balance weight through hole is a long hole extending in a direction inclined with respect to the width direction of the balance weight.

8. An elevator car according to claim 7.

10. The rib through holes are formed in each of the rib portions at predetermined intervals along the longitudinal direction of the rib portion.

7. The elevator car of claim 6.

11. The balance weight through hole is a long hole along the depth direction of the balance weight.

7. The elevator car of claim 6.

12. When the balance weight is fixed to the canopy, the depth direction of the balance weight is the direction along the longitudinal direction of the rib portion, and the width direction of the balance weight is the direction perpendicular to the depth direction of the balance weight. The length of the balance weight in the width direction is shorter than the interval between adjacent rib portions.

7. The elevator car of claim 6.

13. The balance weight through hole is a long hole.

13. The elevator car of claim 12.

14. a center-of-gravity position calculation step of calculating a center-of-gravity position of the elevator car according to claim 1 when viewed from a vertical direction; a balance adjustment calculation step, which is carried out after the center of gravity position calculation step, for calculating positions at which the balance weights are to be disposed and the number of the balance weights so that the center of gravity position is within an allowable position range; a balance adjustment step of arranging a required number of the balance weights at predetermined positions based on the calculation result of the balance adjustment calculation step; A method for balancing an elevator car equipped with the device.

Images