Car balance adjustment device, elevator car including car balance adjustment device, and balance adjustment method of elevator car

Abstract

To provide a car balance adjustment device 1 which enables easy attachment / detachment of a balance weight 30, and to provide an elevator car including the car balance adjustment device 1 and a balance adjustment method of the elevator car.SOLUTION: A car balance adjustment device 1 according to the disclosure includes: a balance weight holding part 20 which is supported through a support member 10 on an upper structure of a car 102; and a balance weight 30 disposed at the balance weight holding part 20. Relative positions of the support member 10 and the balance weight holding part 20 can be adjusted.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a car balancing device, an elevator car equipped with the car balancing device, and a method for balancing an elevator car. [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] In order to solve the above problems, the present disclosure aims to provide a car balancing adjustment device that enables easy attachment and detachment of balance weights, an elevator car equipped with a car balancing adjustment device, and a method for balancing an elevator car. [Means for solving the problem]

[0006] The elevator car balance adjustment device of the present disclosure comprises a support member that can be attached to the upper structure of the elevator car, a balance weight holding part that is supported by the support member and can hold one or more balance weights, and a balance weight that is disposed in the balance weight holding part as necessary, and the relative position of the support member and the balance weight holding part is adjustable.

[0007] The elevator car of the present disclosure comprises the car balance adjustment device of the present disclosure, a car body, and a car frame that holds the car body, the car frame having a beam that spans the top of the car body, the beam being an upper structure, and the upper structure supporting a balance weight holding portion via a support member.

[0008] The elevator car balancing method according to the present disclosure comprises a center of gravity position calculation step of 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 of calculating the position of the balance weight holding part and the number of balance weights to be placed on the balance weight holding part so that the center of gravity position is within an allowable position range, and a balance adjustment step of adjusting the position of the balance weight holding part based on the calculation result of the balance adjustment calculation step, and placing the required number of balance weights on the balance weight holding part. Effect of the Invention

[0009] According to the car balancing adjustment device, the elevator car equipped with the car balancing adjustment device, and the elevator car balancing adjustment method disclosed herein, the balancing weights can be easily attached and removed. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing an elevator equipped with a car balancing adjustment device 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]2 is a schematic diagram showing the car balancing device of FIG. 1 in an exploded state. FIG. [Figure 4] FIG. 2 is a flow diagram showing a method for adjusting the balance of an elevator car according to the first embodiment. [Diagram 5] 11 is a schematic diagram showing a balance weight holding section of a car balancing device according to a second embodiment. FIG. [Figure 6] 13 is a schematic diagram showing a balance weight holding portion and a top plate according to a third embodiment. FIG. [Figure 7] FIG. 11 is a schematic diagram showing the upper part of a car according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] 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 equipped with a car balancing adjustment device 1 according to embodiment 1. FIG. 2 is a perspective view showing an upper part of a car 102 in FIG.

[0012] An elevator 101 is installed in a building 100. A vertically extending elevator shaft 100a is formed in the building 100.

[0013] 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.

[0014] The elevator control device 103 can control the hoist 104. The elevator control device 103 can control the hoist 104 to move the hoist rope 106, thereby moving the car 102. The car 102 can move in the vertical direction within the hoistway 100a.

[0015] The car 102 has a car body 102 a , a door 102 b , a car frame 102 c that supports the car body 102 a , and a work table 110 .

[0016] Users of the elevator 101 can board the car body 102a. An opening is formed in the car body 102a to serve as a passage for users of the elevator 101 to get on and off the car body 102a. The door 102b can close the opening formed in the car body 102a.

[0017] The cage frame 102c is disposed around the cage body 102a along the bottom, both side walls, and the upper side of the cage body 102a. The portion of the cage frame 102c disposed across the upper side of the cage body 102a is a beam 102d.

[0018] The beam 102d is disposed such that the longitudinal direction of the beam 102d is aligned along a horizontal plane. One end of a hanging rope 106 is connected to the beam 102d. The car body 102a is hung from the hanging rope 106 via the car frame 102c. Note that the illustration of the hanging rope 106 is omitted in FIG. 2.

[0019] The workbench 110 is attached to the beam 102d. A worker can stand on the workbench 110 and perform maintenance and inspection work on the upper side of the car 102. In the first embodiment, the beam 102d and the workbench 110 attached to the beam 102d form an upper structure.

[0020] The workbench 110 has a workbench body 111 consisting of a step 111a on which a worker can stand and a pair of step support members 111b that support the step 111a, and a beam attachment mechanism (not shown). In the first embodiment, the workbench 110 is attached to the beam 102d by tightening with a bolt and a nut. That is, the beam attachment mechanism is a bolt and a nut.

[0021] Each step support member 111b has a through hole (not shown), and the beam 102d has a long hole (not shown) that penetrates along the longitudinal direction of the beam 102d. The workbench main body 111, which has been placed at a desired mounting position relative to the beam 102d, is fixed and attached to the beam 102d by tightening nuts on bolts inserted into the through holes of each step support member 111b and the long holes of the beam 102d.

[0022] Since the workbench main body 111 can be attached using the long holes in the beam 102d, the attachment position of the workbench 110 relative to the beam 102d is adjustable. Note that the method of attaching the workbench 110 to the beam 102d and the beam attachment mechanism are not limited to the above means, and any known method and mechanism can be used.

[0023] A car balancing adjustment device 1 is attached to the underside of the workbench 110. The car balancing adjustment device 1 is capable of adjusting the balance of the car 102.

[0024] Fig. 3 is a schematic diagram showing an exploded state of the car balancing adjustment device 1 of Fig. 1. The car balancing adjustment device 1 includes a support member 10, a balance weight holding unit 20 supported by the support member 10, and a plurality of balance weights 30 arranged on the balance weight holding unit 20.

[0025] The support member 10 is attached to the underside of the workbench 110 by a well-known attachment method such as welding or fastening with bolts and nuts. The support member 10 has a pair of support arms 11 and four support arm fixing mechanisms 12.

[0026] Each support arm 11 has a base portion, which is one end portion in the longitudinal direction, attached to the workbench 110. When the other end portion of each support arm 11 opposite the base portion in the longitudinal direction is defined as a tip portion, a balance weight holder 20 is attached to the tip portion side of each support arm 11.

[0027] A through-hole 11h is formed on the tip end side of each support arm 11. The arm long hole 11h is formed along the longitudinal direction of the support arm 11.

[0028] The balance weight holding part 20 can hold a plurality of stacked balance weights 30. The balance weight holding part 20 has a bottom part 21 which is a rectangular plate, and four wall parts 22 arranged along the edges of the four corners of the bottom part 21.

[0029] When viewed from the vertical direction, each wall portion 22 has an L-shape that follows the corner of the bottom portion 21. The space formed by each wall portion 22 and the bottom portion 21 is the arrangement space 20a. The arrangement space 20a will be described later.

[0030] A wall hole 22h, which is a through hole, is formed in the surface of each wall 22 facing each support arm 11. Each wall hole 22h faces a corresponding arm long hole 11h.

[0031] The balance weight holding part 20 and the pair of support arms 11 are fixed in a state in which both side surfaces of the balance weight holding part 20 are sandwiched between the corresponding support arms 11. That is, one support arm 11 is disposed so as to face two wall parts 22. In this state, bolts are inserted into the corresponding wall part holes 22h and arm long holes 11h, and the inserted bolts are fastened with nuts, thereby fixing the balance weight holding part 20 and each support arm 11.

[0032] The bolts and nuts constitute the support arm fixing mechanism 12. When the nuts are loosened, the balance weight holding part 20 can be moved in a direction along the arm long hole 11h. With the balance weight holding part 20 attached to each support arm 11 at a desired position, the balance weight holding part 20 and each support arm 11 can be fixed with the bolts and nuts.

[0033] This makes it possible to adjust the attachment position of the balance weight holding portion 20 relative to the support member 10.

[0034] The balance weight 30 is a plate. The balance weight 30 is arranged in the balance weight holding portion 20 as necessary when adjusting the balance of the car 102. When viewed in the vertical direction, the area of ​​the balance weight 30 is smaller than the area of ​​the bottom portion 21, and the balance weight 30 can be arranged in the arrangement space 20a.

[0035] A plurality of balance weights 30 can be arranged in a stacked state in the arrangement space 20a. Each wall portion 22 restricts the movement of the balance weights 30 arranged on the bottom portion 21 in a direction along the surface of the bottom portion 21.

[0036] The balance weight 30 arranged in the arrangement space 20a is fixed to or placed on the balance weight holding part 20. A known fixing method can be used to fix the balance weight 30 to the balance weight holding part 20. For example, the balance weight 30 and the bottom part 21 may be fixed to each other by forming through holes at corresponding positions on the balance weight 30 and the bottom part 21, inserting bolts into the through holes, and tightening them with nuts.

[0037] Returning to Fig. 2, the explanation will be continued. The explanation will continue with the state where the support member 10 is attached to the upper structure of the car 102, i.e., the state where the car balancing adjustment device 1 is attached to the upper structure. Since the attachment position of the workbench 110 relative to the longitudinal direction of the beam 102d can be adjusted, the attachment position of the car balancing adjustment device 1 attached to the workbench 110 relative to the longitudinal direction of the beam 102d can also be adjusted.

[0038] With the car balance adjustment device 1 attached to the upper structure, when viewed from the vertical direction, the direction along the longitudinal direction of each support arm 11 is perpendicular to the direction along the longitudinal direction of the beam 102d. Therefore, when viewed from the vertical direction, the position of the balance weight holding part 20 can be adjusted along both the longitudinal direction of the beam and the direction along the distance between the balance weight holding part 20 and the upper structure which is perpendicular to that direction. In this way, when viewed from the vertical direction, the position of the balance weight holding part 20 with respect to the car 102 can be adjusted.

[0039] When viewed from the vertical direction, at least a portion of the balance weight holding part 20 overlaps with the workbench 110. In other words, the balance weight holding part 20 or the balance weight 30 arranged on the balance weight holding part 20 is arranged to be hidden under the workbench 110.

[0040] Next, a method for adjusting the balance of the car 102 of the elevator 101 equipped with the car balance adjustment device 1 of the present disclosure will be described. Fig. 4 is a flow diagram showing the method for adjusting the balance of the car 102 of the elevator 101 according to the first embodiment.

[0041] 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.

[0042] In particular, when the equipment installed in the car 102 is made smaller and lighter as a result of renovation work, there is a high possibility that the car 102 will come into contact with the guide rail unevenly if the balance of the car 102 before the renovation work remains the same. Therefore, it is necessary to adjust the balance of the car 102.

[0043] The balance adjustment of the car 102 is performed taking into account the weight of the car balancing adjustment device 1 of the present disclosure. That is, when the car balancing adjustment device 1 is already attached to the car 102, the balance adjustment of the car 102 is performed based on the increase or decrease in weight of the car 102.

[0044] On the other hand, when the car balance adjustment device 1 is not attached to the car 102, balance adjustment of the car 102 is performed based on the increase or decrease in weight of the car 102 including the car balance adjustment device 1 attached to the car 102.

[0045] First, a center-of-gravity position calculation step is performed in step S01. The center-of-gravity position calculation step is a step of determining the position of the center of gravity of the car 102 when the car 102 is viewed in the vertical direction.

[0046] Various devices are attached to the cage 102 at their respective positions, and the position of the center of gravity of the cage 102 is calculated based on the weight and the attachment position of each device. In the center of gravity calculation process, the position of the center of gravity is calculated taking into account the attachment position of the cage balance adjustment device 1.

[0047] Next, a balance adjustment calculation step of 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 30 to be placed so that the center of gravity position calculated in the center of gravity position calculation step is within an allowable position range. Here, the positions at which the balance weights 30 are placed are the positions of the balance weight holding parts 20 at which the balance weights 30 are placed.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] In the balance adjustment calculation process, the positions and quantity of the balance weights 30 are calculated in accordance with the following three guidelines so that the center of gravity is located within the allowable position range.

[0052] The calculation according to the first guideline calculates the required quantity of balance weights 30 at the current position of the balance weight holding unit 20. The calculation according to the second guideline calculates a new position to which the balance weight holding unit 20 should be moved from its current position. The calculation according to the third guideline calculates the required quantity of balance weights 30 after the balance weight holding unit 20 is moved to the new position.

[0053] In the balance adjustment calculation process, calculations are performed according to the first guideline to the third guideline in order, and each time it is determined whether the center of gravity position is within the allowable position range. If it is determined that the center of gravity position is not within the allowable position range, calculations are performed according to the next guideline.

[0054] If it is determined that the center of gravity is not within the allowable position range even after calculation according to the third guideline, it is necessary to perform calculation again according to the third guideline. If it is determined that the center of gravity is within the allowable position range, the process proceeds to the next step.

[0055] For example, calculation according to the first guideline simply calculates the required number of balance weights 30 at the current position of the balance weight holding part 20, and judges whether the center of gravity position is within the allowable position range based on the calculation result. If the calculation according to the first guideline shows that the center of gravity position is within the allowable position range, the balance adjustment is completed by simply arranging the specified number of balance weights 30 in the actual work, without changing the position of the balance weight holding part 20.

[0056] Therefore, the workload during actual work is relatively light.

[0057] If the center of gravity position is not within the allowable range based on the result of the calculation according to the first guideline, a calculation according to the second guideline is performed. The calculation according to the second guideline calculates only the new installation position of the balance weight holding unit 20, and determines whether the center of gravity position is within the allowable range based on the result of this calculation.

[0058] If the result of calculation according to the second guideline shows that the center of gravity is within the allowable range, then in actual work, it is only necessary to change the position of the balance weight holding part 20, and there is no need to place a new balance weight 30. That is, in this case, the center of gravity of the balance weight holding part 20 is moved to be within the allowable range.

[0059] Therefore, in actual work, there is no need to place a new order for the balance weight 30, and work costs can be reduced.

[0060] If the center of gravity position is not within the allowable position range based on the result of the calculation according to the second guideline, a calculation according to the third guideline is performed, which calculates the new position of the balance weight holding part 20 and the number of balance weights 30 to be placed on the balance weight holding part 20, and judges whether the center of gravity position is within the allowable position range based on the calculation result.

[0061] If the result of calculation according to the third guideline indicates that the center of gravity position is within the allowable position range, then in actual work, it is necessary to adjust the balance weight holding part 20 to the calculated position and to adjust the number of balance weights 30 to be placed.

[0062] Therefore, in actual work, it is necessary to adjust the balance weight holding portion 20 and to position the balance weight 30, and it is understood that preparations are required for each of these.

[0063] After calculating the position of the balance weight holding part 20 where the center of gravity position is within the allowable position range and the number of balance weights 30 to be placed on the balance weight holding part 20, the process proceeds to the next step.

[0064] 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 weights 30 are arranged on the car 102 based on the calculation results in the balance adjustment calculation process.

[0065] The worker stands on the top of the car 102 and adjusts the position of the balance weight holding unit 20 to the calculated position. Furthermore, the worker places the calculated number of balance weights 30 on the balance weight holding unit 20 whose position has been adjusted. This completes the balance adjustment of the car 102.

[0066] Here, in the center of gravity position calculation step and the balance adjustment calculation step, the results may be calculated manually or by computer.

[0067] According to the car balance adjustment device 1 in the first embodiment, the elevator 101 is provided with a support member 10 that can be attached to a workbench 110 that is an upper structure of the car 102. The elevator 101 is further provided with a balance weight holding unit that is supported by the support member 10 and can hold one or more balance weights 30. The relative position between the support member 10 and the balance weight holding unit 20 is adjustable. This allows the balance weight 30 to be placed on the upper part of the car 102. Therefore, the balance weight 30 can be easily attached and removed. For example, when the equipment attached to the car 102 is downsized in a repair work and the balance of the car 102 needs to be readjusted, the car balance adjustment device 1 is installed and the car 102 is adjusted for balance, which can be easily performed on the car 102. The position where the balance weight 30 is placed can be adjusted. Therefore, the balance adjustment of the car 102 can be performed more precisely.

[0068] According to the car balancing adjustment device 1 in the first embodiment, the attachment position of the balance weight holding part 20 to the support member 10 is adjustable along the longitudinal direction of the support member 10. This makes it possible to adjust the position at which the balance weight 30 is disposed relative to the car 102 by adjusting the members of the car balancing adjustment device 1. This allows for more precise balance adjustment of the car 102.

[0069] According to the car balancing adjustment device 1 in the first embodiment, the car balancing adjustment device 1 further includes the balance weights 30, which are plates, and the balance weight holding unit 20 can hold a plurality of balance weights 30 in a stacked state. This makes it possible to arrange many balance weights 30 using the minimum necessary space.

[0070] According to the car 102 of the elevator 101 in the first embodiment, the car balance adjustment device 1 of the present disclosure, a car body 102a, and a car frame 102c that holds the car body 102a are provided. The car frame 102c has a beam 102d that crosses the upper part of the car body 102a. The beam 102d is an upper structure, and the beam 102d that is the upper structure supports the balance weight holding part 20 via the support member 10. This allows the balance weight 30 to be disposed on the upper part of the car 102. Therefore, the balance weight 30 can be easily attached and detached. Also, the position where the balance weight 30 is disposed can be adjusted. Therefore, the balance adjustment of the car 102 can be performed more finely. Also, this eliminates the need to directly install the car balance adjustment device 1 on the car body 102a. Therefore, the possibility of interference with the devices arranged on the car body 102a is reduced, and the position at which the balance weight 30 is arranged can be set with greater freedom.

[0071] According to the car 102 of the elevator 101 in the first embodiment, the distance between the upper structure and the balance weight holding unit 20 is adjustable when viewed from the vertical direction. This makes it possible to adjust and apply a moment about an axis perpendicular to the direction along the distance between the upper structure and the balance weight holding unit 20. This allows for more precise balance adjustment of the car 102.

[0072] According to the car 102 of the elevator 101 in the first embodiment, the distance between the upper structure and the balance weight holder 20 is in a direction perpendicular to the longitudinal direction of the beam 102d. This makes it possible to adjust and apply a moment around an axis along the longitudinal direction of the beam 102d. This allows for more precise balance adjustment of the car 102.

[0073] According to the car 102 of the elevator 101 in the first embodiment, when viewed from the vertical direction, the position of the balance weight holding part 20 relative to the upper structure can be adjusted along the longitudinal direction of the beam 102d. This makes it possible to adjust and apply a moment around an axis perpendicular to the longitudinal direction of the beam 102d. Therefore, the balance of the car 102 can be adjusted more precisely.

[0074] The car 102 of the elevator 101 in the first embodiment further includes a workbench 110 attached to the beam 102d, and the beam 102d and the workbench 110 form an upper structure. The beam 102d supports the balance weight holding unit 20 via the workbench 110. The balance weight holding unit 20 is disposed below the workbench 110. This prevents the balance weight holding unit 20 from interfering with the work of an operator on the workbench 110. This makes it possible to prevent a decrease in efficiency of work other than that of balancing the car 102 as much as possible.

[0075] According to the car 102 of the elevator 101 in the first embodiment, when viewed from the vertical direction, at least a part of the balance weight holding part 20 or the balance weight 30 arranged on the balance weight holding part 20 overlaps with the work platform 110. This allows the balance weight holding part 20 to be arranged in a space below the work platform 110 that cannot be efficiently accessed by workers. Therefore, the balance weight 30 can be arranged by utilizing the wasted space.

[0076] According to the balance adjustment method for the car 102 of the elevator 101 in the first embodiment, the present disclosure includes a center of gravity position calculation step for calculating the center of gravity position of the car 102 of the elevator 101 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 position of the balance weight holding unit 20 and the number of balance weights 30 to be placed on the balance weight holding unit 20 so that the center of gravity position is within an allowable position range. The balance adjustment step adjusts the position of the balance weight holding unit 20 based on the calculation result of the balance adjustment calculation step, and places the required number of balance weights 30 on the balance weight holding unit 20. This allows the desired number of balance weights 30 to be placed at the desired position on the upper part of the car 102. Therefore, the balance weights 30 can be easily attached and removed.

[0077] Embodiment 2 Fig. 5 is a schematic diagram showing the balance weight holding unit 20 of the car balancing adjustment device 1 according to the embodiment 2. Fig. 5 shows a state in which the balance weight 30 is arranged in only one arrangement space 20a. The embodiment 2 differs from the car balancing adjustment device 1 according to the embodiment 1 in that a plurality of arrangement spaces 20a are formed in the balance weight holding unit 20.

[0078] When viewed vertically, four arrangement spaces 20a are formed in the balance weight holding portion 20. Partition portions 21a for separating each arrangement space 20a are formed in the bottom portion 21. The partition portions 21a are formed along the normal direction of the bottom portion 21. When viewed vertically, the shape of the partition portions 21a is a + shape.

[0079] Each partition portion 21a is formed to face the wall portion 22. In each arrangement space 20a partitioned by each partition portion 21a, one or more corresponding balance weights 30 can be arranged in a stacked manner.

[0080] Each balance weight 30 is a plate. The balance weight 30 is placed in each arrangement space 20a formed in the balance weight holding part 20 as necessary when adjusting the balance of the car 102. When viewed in the vertical direction, the area of ​​the balance weight 30 is smaller than the area of ​​each arrangement space 20a.

[0081] Other configurations of the car balancing adjustment device 1 and the method of adjusting the balance of the car 102 are the same as the configuration of the car balancing adjustment device 1 and the method of adjusting the balance of the car 102 in embodiment 1, so description thereof will be omitted.

[0082] In the car balance adjustment device 1 in the second embodiment, when viewed in the vertical direction, a plurality of arrangement spaces 20a are formed in the balance weight holding unit 20, and one or more balance weights 30 can be arranged in each space. This makes it possible to arrange the balance weight 30 in a desired arrangement space 20a in the balance weight holding unit 20. Therefore, the balance of the car 102 can be adjusted more precisely.

[0083] Embodiment 3 Fig. 6 is a schematic diagram showing the balance weight holding portion 20 and the top plate 40 according to embodiment 3. In Fig. 6, a state in which three balance weights 30 are arranged on the balance weight holding portion 20 is shown.

[0084] The car balancing adjustment device 1 of the third embodiment differs from the car balancing adjustment device 1 of the first embodiment in that it is provided with a top plate 40 that covers the arrangement space 20a of the balance weight holding portion 20.

[0085] The car balancing adjustment device 1 further includes a top plate 40. The top plate 40 is attached to the balance weight holding portion 20. The top plate 40 attached to the balance weight holding portion 20 covers the arrangement space 20a. That is, when viewed from the vertical direction, the top plate 40 covers at least a portion of the balance weight holding portion 20.

[0086] A well-known attachment method can be used to attach the top plate 40 to the balance weight holding part 20. For example, the top plate 40 may be attached to the balance weight holding part 20 by forming screw holes in the portions of each wall part 22 facing the top plate 40, forming through holes in the top plate 40, inserting bolts into the through holes in the top plate 40, and fastening the bolts into the corresponding screw holes.

[0087] Other configurations of the car balancing adjustment device 1 and the method of adjusting the balance of the car 102 are the same as the configuration of the car balancing adjustment device 1 and the method of adjusting the balance of the car 102 in embodiment 1, so description thereof will be omitted.

[0088] The car balance adjustment device 1 in the third embodiment further includes a top plate 40 attached to the balance weight holding part 20, and when viewed in the vertical direction, the top plate 40 covers at least a part of the balance weight holding part 20. In this way, the top plate 40 is attached to the balance weight holding part 20 regardless of the presence or absence of the balance weight 30. Therefore, a worker can use the top plate 40 on the balance weight holding part 20 as a step and stand on the top plate 40 to perform work. This improves the work efficiency of the worker on the car 102.

[0089] The top plate 40 in the third embodiment has a flat surface. However, this is not limited to this. For example, the surface of the top plate 40 may be formed with projections and recesses.

[0090] In the car balancing device 1 in the third embodiment, an uneven shape is formed on the surface of the top plate 40. This provides the top plate 40 with an anti-slip effect. Therefore, a worker who works on the top plate 40 can work more safely.

[0091] Embodiment 4 7 is a schematic diagram showing an upper part of a car 102 according to embodiment 4. Embodiment 4 differs from embodiment 1 in that the car 102 is provided with a car balance adjustment device 1 and a second car balance adjustment device 1B.

[0092] Fig. 7 shows the car 102 as viewed from above in the vertical direction. In Fig. 7, the outline of the workbench 110 is indicated by a dashed line. In the fourth embodiment, as in the first embodiment, the workbench 110 is attached to the beam 102d on the door 102b side of the beam 102d, and the car balance adjustment device 1 is attached to the workbench 110.

[0093] A second car balancing adjustment device 1B is installed on the opposite side of the beam 102d from the side on which the car balancing adjustment device 1 is installed.

[0094] The names of the components of the second car balancing adjustment device 1B of the fourth embodiment are obtained by adding the prefix "second" to the names of the components of the car balancing adjustment device 1 in the corresponding embodiment 1. Moreover, the reference signs given to the components of the second car balancing adjustment device 1B of the fourth embodiment are obtained by adding "B" to the end of the reference signs given to the components of the car balancing adjustment device 1 in the corresponding embodiment 1.

[0095] The second car balance adjustment device 1B includes a second support member 10B, a second balance weight holding portion 20B, and a second balance weight 30B that is disposed on the second balance weight holding portion 20B as required. The second support member 10B has a pair of second support arms 11B.

[0096] Each second support arm 11B is attached to a beam 102d. A through hole (not shown) is formed at the base of the second support arm 11B, and a long hole (not shown) is formed in the beam 102d, penetrating along the longitudinal direction of the beam 102d. The second car balance adjustment device 1B, which is arranged at a desired attachment position with respect to the beam 102d, is fixed and attached to the beam 102d by tightening a bolt inserted into the through hole of each second support arm 11B and the long hole of the beam 102d with a nut.

[0097] Since the second car balance adjustment device 1B can be attached using the long hole in the beam 102d, the attachment position of the second car balance adjustment device 1B relative to the beam 102d is adjustable. Note that the attachment of the second car balance adjustment device 1B to the beam 102d is not limited to the above means, and any well-known means can be used.

[0098] In the fourth embodiment, the balance weight 30 and the second balance weight 30B have the same configuration, shape, and size. Therefore, the same balance weight 30 can be arranged on the balance weight holding portion 20 and the second balance weight holding portion 20B.

[0099] 7, the directions in which the positions of the balance weight holding part 20 and the second balance weight holding part 20B can be adjusted are indicated by arrows. The balance weight holding part 20 and the second balance weight holding part 20B can be adjusted in a direction along the longitudinal direction of the beam 102d and in a direction perpendicular to the direction along the longitudinal direction of the beam 102d.

[0100] The adjustable direction of the position of the balance weight holding unit 20 is the same in the first to third embodiments. The other configurations are the same as those of the car balance adjustment device 1 and the car 102 of the elevator 101 equipped with the car balance adjustment device 1 in the first embodiment, and therefore will not be described.

[0101] A method for adjusting the balance of the car 102 of the elevator 101 in the fourth embodiment will be described. The method for adjusting the balance of the car 102 in the fourth embodiment includes the same steps as the method for adjusting the balance of the car 102 in the first embodiment.

[0102] In the balance adjustment method for the car 102 in the fourth embodiment, a balance adjustment calculation step in step S02 and a balance adjustment step in step S03 are performed for the car balancing adjustment device 1 and the second car balancing adjustment device 1B. The other steps are similar to those in the balance adjustment method in the first embodiment, and therefore the description thereof will be omitted.

[0103] The car 102 of the elevator 101 in the fourth embodiment further includes a second car balance adjustment device 1B. The second car balance adjustment device 1B includes a second support member 10B that can be attached to the upper structure, and a second balance weight holding unit 20B that is supported by the second support member 10B and can hold one or more second balance weights 30B. When viewed from the vertical direction, the relative positions of the second support member 10B and the second balance weight holding unit 20B are adjustable. When viewed from the vertical direction, the car balance adjustment device 1 is disposed on one side of the beam 102d across the beam 102d, and the second car balance adjustment device 1B is disposed on the other side of the beam 102d opposite to the one side of the beam 102d across the beam 102d. That is, the car balance adjustment device 1 and the second car balance adjustment device 1B are provided on both sides of the beam 102d. Therefore, it is possible to perform more precise balance adjustment of the car 102. In addition, this allows the second balance weight 30B to be disposed at the upper part of the car 102. Therefore, the second balance weight 30B can be easily attached and detached.

[0104] In the car 102 of the elevator 101 in the fourth embodiment, the second support member 10B is attached to the beam 102d. As a result, the second balance weight 30B is not directly attached to the car body 102a. This reduces the possibility of interference with equipment arranged on the car body 102a, allowing for greater freedom in determining the position at which the second balance weight 30B is arranged.

[0105] In the car 102 of the elevator 101 in the fourth embodiment, the second balance weight 30B and the balance weight 30 are equal in size. This allows both the second balance weight 30B and the balance weight 30 to be placed on the balance weight holding section 20 and the second balance weight holding section 20B, respectively. Therefore, the balance weight 30 and the second balance weight 30B can be made common, which allows costs to be reduced.

[0106] The configuration of the second car balance adjustment device 1B in the fourth embodiment is the same as the configuration of the car balance adjustment device 1 in the first embodiment. However, this is not limited to this. The configuration of the second car balance adjustment device 1B in the fourth embodiment may be the same as the configuration of the car balance adjustment device 1 in the second or third embodiment.

[0107] Moreover, the balance weight holding section 20 of the car balance adjustment device 1 in the first to fourth embodiments forms a rectangular parallelepiped arrangement space 20a with the bottom 21 and the four wall sections 22. However, this is not limited to this. For example, the balance weight 30 has a flat surface. However, this is not limited to this. For example, the balance weight 30 may be arranged on the bottom 21 without having the wall sections 22. In this case, the balance weight 30 and the bottom 21 may be fixed to each other. The same is true for the second car balance adjustment device 1B in the fourth embodiment.

[0108] Moreover, the balance weight 30 in the first to fourth embodiments has a flat surface. However, this is not limited to this. For example, the surface of the balance weight 30 may be formed with projections and recesses. The same is true for the second balance weight 30B in the fourth embodiment.

[0109] The surface of the balance weight 30 of the car balance adjusting device 1 in the first to fourth embodiments is formed with an uneven shape. This makes it possible to impart an anti-slip effect to the surface of the balance weight 30. Therefore, the safety of the operator can be further ensured.

[0110] Moreover, the balance weight 30 in the first to fourth embodiments is a plate. However, this is not limited thereto. For example, the balance weight 30 may be in the shape of a rectangular parallelepiped or a sphere processed so as not to roll. Furthermore, each balance weight 30 may have a handle. This allows the worker to easily carry the balance weight 30 using the handle. The worker does not need to prepare a separate tool for carrying the balance weight 30, and the work efficiency can be improved. The same applies to the second balance weight 30B in the fourth embodiment.

[0111] Moreover, each of the balance weights 30 in the first to fourth embodiments is uniform. However, this is not limited to this. There may be multiple types of balance weights 30. For example, balance weights 30 that have holes drilled into them to reduce weight, balance weights 30 with different thicknesses, or balance weights 30 made of different materials may be prepared. This allows balance weights 30 with different masses to be prepared. Therefore, more precise balance adjustments can be made. The same is true for the second balance weight 30B in the fourth embodiment.

[0112] Moreover, the balance weight holding portion 20 in the first to fourth embodiments has a bottom portion 21 and four wall portions 22. However, this is not limited to this. The balance weight holding portion 20 may have any shape and configuration. For example, the wall portions 22 may be installed along all edges of the bottom portion 21 to form a single wall surrounding the arranged balance weight 30. The same is true for the second balance weight holding portion 20B in the fourth embodiment.

[0113] In the car balance adjustment device 1 in the first to fourth embodiments, the direction in which the mounting position of the work table 110 relative to the beam 102d can be adjusted is perpendicular to the direction in which the mounting position of the balance weight holding unit 20 relative to the work table 110 can be adjusted. However, this is not limited to this. The two directions may not be perpendicular to each other, but may intersect. That is, the mounting position of the balance weight holding unit 20 may be adjustable along a direction inclined relative to the longitudinal direction of the beam 102d. This allows various moving directions to be set as the moving direction of the balance weight holding unit 20, and increases the degree of freedom in setting the position of the balance weight holding unit 20. This also makes it possible to further avoid interference between the equipment arranged on the car main body 102a and the car balance adjustment device 1. The same is true for the second car balance adjustment device 1B in the fourth embodiment.

[0114] Furthermore, in the car balancing adjustment device 1 in the first to fourth embodiments, when viewed from the vertical direction, at least a portion of the balance weight holding unit 20 overlaps with the workbench 110. However, this is not limited to this. When viewed from the vertical direction, the balance weight holding unit 20 and the workbench 110 do not have to overlap. This increases the degree of freedom in setting the installation location of the car balancing adjustment device 1. Therefore, it is possible to further avoid interference between the equipment arranged on the car main body 102a and the car balancing adjustment device 1. The same is true for the second car balancing adjustment device 1B in the fourth embodiment.

[0115] Moreover, the shape of the balance weight 30 in the first to fourth embodiments is a shape corresponding to the arrangement space 20a. However, it is not limited to this. For example, the balance weight 30 may be of a size that allows multiple balance weights 30 to be arranged side by side in the arrangement space 20a. That is, the balance weight 30 may have a shape in which one balance weight 30 occupies a part of the arrangement space 20a when viewed from the vertical direction. This allows the balance weight 30 to be arranged at any position within the arrangement space 20a when viewed from the vertical direction. Therefore, the balance of the car 102 can be adjusted with high precision. The same applies to the second balance weight 30B in the fourth embodiment.

[0116] Moreover, in the first to fourth embodiments, one car balance adjustment device 1 is installed on one side of the beam 102d. However, this is not limited to this. For example, a plurality of car balance adjustment devices 1 may be installed side by side along the longitudinal direction of the beam 102d. This allows the balance of the car 102 in the direction along the longitudinal direction of the beam 102d to be adjusted more finely. The same is true for the second car balance adjustment device 1B in the fourth embodiment.

[0117] Moreover, the car balancing adjustment device 1 in the first to fourth embodiments is attached to the underside of the workbench 110. However, this is not limited to this. For example, the car balancing adjustment device 1 may be attached directly to the beam 102d. In this case, the car balancing adjustment device 1 may be fixed to the beam 102d by inserting bolts into through holes formed in each support arm 11 and into long holes formed along the longitudinal direction of the beam 102d and tightening them with nuts. In other words, it is sufficient that the car balancing adjustment device 1 is attached to the upper structure above the car main body 102a.

[0118] Moreover, the second car balance adjustment device 1B in the fourth embodiment is attached directly to the beam 102d. However, this is not limited to this. For example, as in the first embodiment, the workbench 110 may be attached to the beam 102d, and the second car balance adjustment device 1B may be attached to the workbench 110.

[0119] Moreover, the upper structure in the first to fourth embodiments is the beam 102d or the workbench 110 attached to the beam 102d. However, it is not limited to this. The upper structure may be any structure located above the car main body 102a. For example, in a car frame 102c without the beam 102d, a new upper structure for mounting the car balancing adjustment device 1 may be installed using the car frame 102c. In other words, the car balancing adjustment device 1 may be mounted on the upper structure above the car main body 102a. The same applies to the second car balancing adjustment device 1B in the fourth embodiment.

[0120] Moreover, in the car balance adjustment device 1 in the first to fourth embodiments, the mounting position of the balance weight holding part 20 with respect to each support arm 11 is adjusted. However, this is not limited to this. For example, each support arm 11 may be made extendable. That is, the mounting position of the balance weight holding part 20 of each support arm 11 may be fixed. By making each support arm 11 extendable, the distance from the beam 102d to the balance weight holding part 20 can be adjusted. That is, when viewed from the vertical direction, the distance between the beam 102d and the balance weight holding part 20 can be adjusted. The same is true for the second car balance adjustment device 1B in the fourth embodiment.

[0121] Moreover, the balance weight 30 in the first to fourth embodiments 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 30, and a concave portion may be formed on the back surface of the balance weight 30. This allows the convex portion to fit into the concave portion when multiple balance weights 30 are stacked, reducing the occurrence of misalignment between the balance weights 30, and allowing the multiple balance weights 30 to be arranged more stably. The same is true for the second balance weight 30B in the fourth embodiment.

[0122] Moreover, the four walls 22 of the balance weight holding part 20 in the first to fourth embodiments restrict the horizontal movement of the balance weight 30. However, this is not limited to this. For example, a convex part may be formed on the back surface of the balance weight 30, and a concave part may be formed on the surface of the bottom part 21. This allows the balance weight 30 to be placed on the balance weight holding part 20 by fitting the convex part of the balance weight 30 into the concave part of the bottom part 21. Alternatively, the horizontal movement of the balance weight 30 may be restricted by covering the surface of the bottom part 21 with a member having a high friction coefficient, or by forming an uneven shape on the surface of the bottom part 21. The same is true for the second balance weight holding part 20B in the fourth embodiment. This eliminates the need for the wall part 22 to restrict the horizontal movement of the balance weight 30, and the shape of the wall part 22 can be designed more freely.

[0123] Furthermore, in the car balancing adjustment device 1, the second car balancing adjustment device 1B, and the car 102 of the elevator 101 equipped with at least the car balancing adjustment device 1 according to the first to fourth embodiments, it is possible to adjust the balance of the car 102 as described above. This enables the balancing weights 30 to be arranged effectively in the balance adjustment of the car 102, and makes it possible to reduce the number of the balancing weights 30. Therefore, the total weight of the car 102 can be kept low, and the energy used to move the car 102 can be reduced.

[0124] Various aspects of the present disclosure are summarized below as appendices.

[0125] (Appendix 1) a support member attachable to the superstructure of the elevator car; a balance weight holding portion supported by the support member and capable of holding one or more balance weights; Equipped with The relative position between the support member and the balance weight holding portion is adjustable. Basket balancing device. (Appendix 2) The attachment position of the balance weight holder to the support member is adjustable along the longitudinal direction of the support member. 2. A car balancing apparatus as described in claim 1. (Appendix 3) The balance weight is further provided, The balance weight is a plate, The balance weight holding portion can hold a plurality of the balance weights in a stacked state. 3. A cage balancing device according to claim 1 or 2. (Appendix 4) The surface of the balance weight is formed with an uneven shape. 4. A car balancing apparatus as described in appendix 3. (Appendix 5) When viewed from a vertical direction, a plurality of spaces are formed in the balance weight holding portion, One or more of the balance weights can be placed in each of the spaces. 5. A car balancing apparatus according to claim 1, wherein the car balancing apparatus is a car balancing apparatus having a first and a second shaft. (Appendix 6) Further comprising a top plate attached to the balance weight holding portion, When viewed in the vertical direction, the top plate covers at least a portion of the balance weight holding portion. 6. A car balancing apparatus according to claim 1, (Appendix 7) The surface of the top plate is formed with an uneven shape. 7. A car balancing apparatus as described in appendix 6. (Appendix 8) A car balancing device according to any one of appendix 1 to appendix 7; A basket body, A car frame that holds the car body; Equipped with The car frame has a beam extending across an upper portion of the car body, the beam is the upper structure, The upper structure supports the balance weight holding part via the support member. Elevator car. (Appendix 9) When viewed from the vertical direction, the distance between the upper structure and the balance weight holding part is adjustable. An elevator car as described in Appendix 8. (Appendix 10) The distance between the upper structure and the balance weight holder is perpendicular to the longitudinal direction of the beam. An elevator car as described in Appendix 9. (Appendix 11) When viewed from the vertical direction, the position of the balance weight holder relative to the upper structure can be adjusted along the longitudinal direction of the beam. 11. An elevator car according to any one of claims 8 to 10. (Appendix 12) Further comprising a work platform attached to the beam; The beam and the work platform are the upper structure, The beam supports the balance weight holder via the workbench, The balance weight holder is disposed below the workbench. 12. An elevator car according to any one of claims 8 to 11. (Appendix 13) When viewed from the vertical direction, at least a portion of the balance weight holding portion or the balance weight arranged on the balance weight holding portion overlaps with the workbench. An elevator car as described in Appendix 12. (Appendix 14) Further comprising a second cage balance adjustment device, The second car balancing device includes a second support member that can be attached to the upper structure; a second balance weight holding portion supported by the second support member and capable of holding one or more second balance weights; having When viewed from the vertical direction, a relative position between the second support member and the second balance weight holding portion is adjustable, When viewed from the vertical direction, the car balance adjustment device is disposed on one side of the beam across the beam, and the second car balance adjustment device is disposed on the other side of the beam opposite to the one side of the beam across the beam. 14. An elevator car according to any one of claims 8 to 13. (Appendix 15) The second support member is attached to the beam. An elevator car as described in Appendix 14. (Appendix 16) The second balance weight and the balance weight are equal in size. 1. An elevator car as described in Appendix 14 or Appendix 15. (Appendix 17) 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 8 to Supplementary Note 16 when viewed from a vertical direction; a balance adjustment calculation step, which is performed after the center of gravity position calculation step, of calculating a position of the balance weight holding part and a quantity of the balance weights to be placed on the balance weight holding part so that the center of gravity position is within an allowable position range; a balance adjustment step of adjusting the position of the balance weight holding portion based on the calculation result of the balance adjustment calculation step, and arranging a required number of the balance weights on the balance weight holding portion; A method for balancing an elevator car equipped with the device. [Explanation of symbols]

[0126] 1 cage balance adjustment device, 1B second cage balance adjustment device, 10 support member, 10B second support member, 11 support arm, 11B second support arm, 11h arm long hole, 12 support arm fixing mechanism, 20 balance weight holding part, 20B second balance weight holding part, 20a arrangement space (space), 21 bottom, 21a partition part, 22 wall part, 22h wall part hole, 30 balance weight, 30B second balance weight, 40 top plate, 100 building, 100a hoistway, 101 elevator, 102 cage, 102a cage body, 102b door, 102c cage frame, 102d beam (upper structure), 103 elevator control device, 104 hoist, 105 counterweight, 106 hoisting rope, 110 Workbench (upper structure), 111 Workbench main body, 111a Stepboard, 111b Stepboard support member.

Claims

1. a support member attachable to the superstructure of the elevator car; a balance weight holding portion supported by the support member and capable of holding one or more balance weights; Equipped with The relative position between the support member and the balance weight holding portion is adjustable. Basket balancing device.

2. The attachment position of the balance weight holder to the support member is adjustable along the longitudinal direction of the support member.

2. The car balancing apparatus of claim 1.

3. The balance weight is further provided, The balance weight is a plate, The balance weight holding portion can hold a plurality of the balance weights in a stacked state.

2. The car balancing apparatus of claim 1.

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

4. A car balancing apparatus as claimed in claim 3.

5. When viewed from a vertical direction, a plurality of spaces are formed in the balance weight holding portion, One or more of the balance weights can be placed in each of the spaces.

2. The car balancing apparatus of claim 1.

6. Further comprising a top plate attached to the balance weight holding portion, When viewed in the vertical direction, the top plate covers at least a portion of the balance weight holding portion.

2. The car balancing apparatus of claim 1.

7. The surface of the top plate is formed with an uneven shape.

7. A car balancing apparatus as claimed in claim 6.

8. The car balancing device according to claim 1 ; A basket body, A car frame that holds the car body; Equipped with The car frame has a beam extending across an upper portion of the car body, the beam is the upper structure, The upper structure supports the balance weight holding part via the support member. Elevator car.

9. When viewed from the vertical direction, the distance between the upper structure and the balance weight holding part is adjustable.

9. The elevator car of claim 8.

10. The distance between the upper structure and the balance weight holder is perpendicular to the longitudinal direction of the beam.

10. An elevator car according to claim 9.

11. When viewed from the vertical direction, the position of the balance weight holder relative to the upper structure can be adjusted along the longitudinal direction of the beam.

9. The elevator car of claim 8.

12. Further comprising a work platform attached to the beam; The beam and the work platform are the upper structure, The beam supports the balance weight holder via the workbench, The balance weight holder is disposed below the workbench.

9. The elevator car of claim 8.

13. When viewed from the vertical direction, at least a portion of the balance weight holding portion or the balance weight arranged on the balance weight holding portion overlaps with the workbench.

13. The elevator car of claim 12.

14. Further comprising a second cage balance adjustment device, The second car balancing apparatus includes a second support member mountable to the upper structure; a second balance weight holding portion supported by the second support member and capable of holding one or more second balance weights; having When viewed from a vertical direction, a relative position between the second support member and the second balance weight holding portion is adjustable, when viewed in the vertical direction, the car balance adjustment device is disposed on one side of the beam across the beam, and the second car balance adjustment device is disposed on the other side of the beam opposite to the one side of the beam across the beam.

9. The elevator car of claim 8.

15. The second support member is attached to the beam.

15. The elevator car of claim 14.

16. The second balance weight and the balance weight are equal in size.

15. The elevator car of claim 14.

17. a center-of-gravity position calculation step of calculating a center-of-gravity position of the elevator car according to claim 8 when viewed from a vertical direction; a balance adjustment calculation step, which is performed after the center of gravity position calculation step, of calculating a position of the balance weight holding part and a quantity of the balance weights to be placed on the balance weight holding part so that the center of gravity position is within an allowable position range; a balance adjustment step of adjusting the position of the balance weight holding portion based on the calculation result of the balance adjustment calculation step, and arranging a required number of the balance weights on the balance weight holding portion; A method for balancing an elevator car equipped with the device.

Images