Elevator counterweight device

Abstract

To provide an elevator counterweight device that can improve the efficiency of weight balance adjustment work. [Solution] The elevator counterweight device according to the embodiment includes a plurality of weight adjustment bodies stacked on the weight body, which include a first weight division section, a second weight division section, and weight bolts. The weight pressing mechanism presses the weight body and weight adjustment bodies by their own weight and includes a suspension point. The weight bolts fasten the first weight division section and the second weight division section from one side in the second direction of the weight adjustment body. The first weight division section and the second weight division section can be individually removed from the weight frame by removing the weight bolts.

Description

Technical Field

[0001] The embodiment relates to a counterweight device for an elevator.

Background Art

[0002] An elevator device is known in which a car and a counterweight are connected via a main rope, and the car is moved up and down by winding up the main rope. The counterweight is configured by stacking a plurality of weight bodies in the vertical direction in a weight frame.

[0003] A heavy object such as a damper weight mechanism may be mounted above the weight body of the counterweight. In this case, it is difficult to insert and remove the weight body into and from the weight frame without removing the damper weight mechanism. For this reason, there has been a problem that the working efficiency of adjusting the weight balance of the counterweight is reduced.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the embodiment is to provide a counterweight device for an elevator that can improve the working efficiency of weight balance adjustment.

Means for Solving the Problems

[0006] The elevator counterweight device according to this embodiment includes a weight frame including a pair of vertical beams spaced apart in a first direction, each including a recess that opens inward; a plurality of weights stacked on the weight frame; a plurality of weight adjusters stacked on the uppermost weight among the plurality of weights; and a weight pressing mechanism, which is placed on the uppermost weight adjuster among the plurality of weight adjusters and presses the weights and weight adjusters with its own weight, and includes a suspension point. The weight adjuster includes a first weight division portion including a corresponding first protrusion inserted into one of the recesses; a second weight division portion including a corresponding second protrusion inserted into the other recess; and a plurality of weight bolts. The first weight division portion includes a first contact surface, and the second weight division portion includes a second contact surface that contacts the first contact surface. The first and second contact surfaces extend in a direction that intersects a second direction perpendicular to the first direction in a plan view. The weight bolt fastens the first weight division and the second weight division from one side in the second direction of the weight adjustment body. The first weight division and the second weight division can be individually removed from the weight frame by removing the weight bolt. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic cross-sectional view showing an elevator system according to this embodiment. [Figure 2] Figure 2 is a front view showing the counterweight device according to this embodiment. [Figure 3] Figure 3 is a plan view showing the weight adjustment mechanism shown in Figure 2. [Figure 4] Figure 4 is a partially enlarged side view showing the counterweight device shown in Figure 2. [Figure 5] Figure 5 is a plan view illustrating the method for removing the weight adjustment mechanism shown in Figure 3. [Figure 6] Figure 6 is a front view showing the weight pressing mechanism shown in Figure 2 in a lifted state. [Figure 7] Figure 7 is a plan view showing a modified example of the weight adjustment body shown in Figure 3. [Figure 8] Figure 8 is a plan view showing a modified example of the counterweight device shown in Figure 2. [Modes for carrying out the invention]

[0008] The counterweight device of the elevator in this embodiment will be described below with reference to the drawings. First, the elevator device according to this embodiment will be described.

[0009] As shown in Figure 1, the elevator system 1 comprises a car 3 and a counterweight 4 located within the hoistway 2. The car 3 and the counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave 6a and a deflection sheave 7 provided on the hoisting machine 6. The car 3 and the counterweight 4 move up and down as the hoisting machine 6 winds up the main rope 5. The car 3 moves up and down guided by a vertically extending car guide rail 8. The counterweight 4 moves up and down guided by a vertically extending counterweight guide rail 9. The hoisting machine 6 is installed in a machine room 10 located above the hoistway 2. A control panel 11 is installed in the machine room 10. The control panel 11 is a device that controls the entire elevator system 1, including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 6 in response to landing calls and car calls, and brings the elevator car 3 to the landing 12 of the registered floor.

[0010] It should be noted that the elevator system 1 is not limited to the configuration shown in Figure 1. For example, it may be a so-called machine-room-less elevator system. That is, the hoisting machine 6 and control panel 11 may be installed above the hoistway 2, etc., without providing a machine room 10.

[0011] Next, the elevator counterweight device according to this embodiment (hereinafter simply referred to as the counterweight device 20) will be described. The counterweight device 20 corresponds to the counterweight 4 shown in Figure 1. In the following description, the first direction is the lateral direction, the second direction is the front-to-back direction, and the third direction is the up-and-down direction. The left-right direction when viewing the counterweight device 20 from the front corresponds to the lateral direction. The front is the surface facing the inside of the hoistway 2. The front-to-back direction is the direction perpendicular to the lateral direction in a plan view, and the up-and-down direction is the direction perpendicular to both the lateral and front-to-back directions.

[0012] As shown in FIG. 2, the counterweight device 20 may include a weight frame 30, a plurality of weights 40, a plurality of weight adjusting bodies 50, a stopper 60, and a weight pressing mechanism 70.

[0013] The weight frame 30 includes a lower beam 31, a pair of vertical beams 32, and an upper beam 33.

[0014] The lower beam 31 extends in the horizontal direction.

[0015] The vertical beams 32 extend upward from both end portions of the lower beam 31 in the horizontal direction. The vertical beams 32 may be fixed to the corresponding end portions of the lower beam 31. The vertical beams 32 are spaced apart in the horizontal direction. As shown in FIG. 3, the vertical beams 32 may include recesses 32a that open inward. More specifically, the vertical beams 32 may be U-shaped steel.

[0016] As shown in FIG. 2, the upper beam 33 extends horizontally from the upper end portion of one vertical beam 32 to the upper end portion of the other vertical beam 32. Both end portions of the upper beam 33 in the horizontal direction may be fixed to the corresponding vertical beams 32.

[0017] The weights 40 are supported by the lower beam 31 of the weight frame 30. The weights 40 are horizontally placed inside the weight frame 30 and stacked in the vertical direction. The weights 40 are placed and stacked on the above-described lower beam 31. The weights 40 are locked to the vertical beams 32. Both end portions of the weights 40 in the horizontal direction are engaged with the vertical beams 32. More specifically, the weights 40 include a pair of convex portions (not shown) inserted into the recesses 32a of the vertical beams 32 described above, and the convex portions are inserted into the recesses 32a of the vertical beams 32 and engaged with the vertical beams 32. The weights 40 may be made mainly of concrete or may be made of a metal plate. Some of the plurality of weights 40 may be made mainly of concrete, and some of the other weights 40 may be made of a metal plate.

[0018] As shown in FIG. 2, the hammer adjustment assembly 50 is disposed inside the hammer frame 30 and above the hammer body 40. The hammer adjustment assembly 50 is stacked on the hammer body 40 located at the uppermost position among the plurality of hammer bodies 40. As shown in FIG. 3, the hammer adjustment assembly 50 includes a front surface 50a (first side surface) extending in the lateral direction and a rear surface 50b (second side surface) extending in the lateral direction located on the opposite side of the front surface 50a.

[0019] As shown in FIG. 3, the hammer adjustment assembly 50 according to the present embodiment is schematically divided into two parts in the lateral direction. More specifically, the hammer adjustment assembly 50 includes a first hammer division part 51, a second hammer division part 52, and a plurality of hammer bolts 55. The first hammer division part 51 includes a first convex part 51a inserted into the concave part 32a of the corresponding vertical beam 32. The second hammer division part 52 includes a second convex part 52a inserted into the concave part 32a of the corresponding vertical beam 32. In the example shown in FIG. 3, the first hammer division part 51 is disposed on the left side, and the first convex part 51a is inserted into the concave part 32a of the vertical beam 32 disposed on the left side. The second hammer division part 52 is disposed on the right side, and the second convex part 52a is inserted into the concave part 32a of the vertical beam 32 disposed on the right side.

[0020] The first hammer division part 51 includes a first contact surface 53 that contacts the second hammer division part 52. The second hammer division part 52 includes a second contact surface 54 that contacts the first hammer division part 51. The second contact surface 54 contacts the first contact surface 53. The first contact surface 53 and the second contact surface 54 extend in a direction intersecting the front-rear direction in plan view. The first contact surface 53 and the second contact surface 54 are formed such that the first hammer division part 51 and the second hammer division part 52 can be individually removed from the hammer frame 30.

[0021] The first contact surface 53 includes a first front-side inclined surface 53a (first inclined surface) and a first rear-side inclined surface 53b (second inclined surface). The first front-side inclined surface 53a extends in a direction that is inclined in the front-rear direction from the front surface 50a in a plan view. The first rear-side inclined surface 53b extends in a direction that is inclined in the front-rear direction from the rear surface 50b in a plan view. In this embodiment, the first front-side inclined surface 53a and the first rear-side inclined surface 53b are formed continuously. That is, the first contact surface 53 constitutes an overall linear inclined surface. The first contact surface 53 is inclined in the lateral direction and the front-rear direction, respectively. The inclination angle of the first contact surface 53 may be set arbitrarily, provided that the first weight division portion 51 and the second weight division portion 52 can be individually removed from the weight frame 30.

[0022] The second contact surface 54 includes a second front-side inclined surface 54a (third inclined surface) and a second rear-side inclined surface 54b (fourth inclined surface). The second front-side inclined surface 54a extends in a direction inclined in the front-rear direction from the front surface 50a in a plan view and faces the first front-side inclined surface 53a described above. The second rear-side inclined surface 54b extends in a direction inclined in the front-rear direction from the rear surface 50b in a plan view and faces the first rear-side inclined surface 53b described above. In this embodiment, the second front-side inclined surface 54a and the second rear-side inclined surface 54b are formed continuously. That is, the second contact surface 54 constitutes an overall linear inclined surface. The second contact surface 54 is inclined in the lateral direction and the front-rear direction, respectively. The second contact surface 54 may be in contact with the first contact surface 53 described above. The inclination angle of the second contact surface 54 may be equal to the inclination angle of the first contact surface 53.

[0023] As shown in Figure 2, the weight bolt 55 fastens the first weight division 51 and the second weight division 52. In this embodiment, the first weight division 51 and the second weight division 52 are fastened by two weight bolts 55. The weight bolt 55 fastens the first weight division 51 and the second weight division 52 from one side in the front-rear direction of the weight adjustment body 50. The weight bolt 55 in this embodiment is arranged along the front-rear direction and is inserted from the front surface 50a of the weight adjustment body 50. More specifically, the first weight division 51 includes a bolt through-hole 53c through which the weight bolt 55 passes. The bolt through-hole 53c extends in the front-rear direction, and it is not necessary for an internal thread to be formed in the bolt through-hole 53c. The second weight division 52 includes a bolt threaded hole 54c into which the weight bolt 55 is screwed. The bolt threaded hole 54c extends in the front-to-back direction, and has a female thread that engages with the male thread of the weight bolt 55. The lengths of the two weight bolts 55 may be equal or different.

[0024] In this way, by fastening the first weight division section 51 and the second weight division section 52 with the weight bolt 55, the first weight division section 51 and the second weight division section 52 are integrated, forming a single weight adjustment body 50.

[0025] As shown in Figures 3 and 4, the weight bolt 55 includes a head 55a that abuts against the front surface 50a of the first weight division 51. The head 55a protrudes from the front surface 50a of the first weight division 51. As shown in Figure 4, the head 55a is located inside the counterweight device 20 beyond the front surface 40a (outer edge) of the weight body 40. The head 55a does not protrude outward from the front surface 40a of the weight body 40. Therefore, the width (dimension in the front-rear direction) of the central part of the weight adjustment body 50 may be smaller than the width of the central part of the weight body 40. The central part of the weight adjustment body 50 is the part between the first protrusion 51a and the second protrusion 52a. The central part of the weight body 40 is the part between the pair of protrusions (not shown) located on both sides in the lateral direction.

[0026] As shown in Figure 3, the stopper 60 is positioned on the opposite side of the weight adjustment body 50 from the head 55a of the weight bolt 55. In this embodiment, the stopper 60 is positioned on the back surface 50b of the weight adjustment body 50. The stopper 60 extends laterally from one vertical beam 32 to the other vertical beam 32. Both ends of the stopper 60 in the lateral direction are fixed to the corresponding vertical beams 32. The stopper 60 may be formed in a U-shape in plan view. The stopper 60 faces the weight adjustment body 50 in the front-rear direction. In the example shown in Figure 3, the stopper 60 is shown to be in contact with the back surface 50b of the weight adjustment body 50, but a gap may be formed between the stopper 60 and the back surface 50b of the weight adjustment body 50, as long as it is possible to prevent the first weight division portion 51 and the second weight division portion 52 from falling off when the weight bolt 55 is removed.

[0027] With the weight adjustment body 50 configured in this way, the first weight division portion 51 and the second weight division portion 52 of the weight adjustment body 50 can be individually removed from the weight frame 30 by removing the weight bolts 55. In this embodiment, as shown in Figure 5, the first weight division portion 51 can be removed from the weight frame 30. In this case, each weight bolt 55 is removed. Then, the first weight division portion 51 is rotated clockwise when viewed from above, with the first protrusion 51a as the pivot point. This allows the first protrusion 51a to be pulled out from the recess 32a of the left vertical beam 32. In this way, the first weight division portion 51 is removed while rotating the first weight division portion 51 in a horizontal plane along the lateral and front-rear directions. After the first weight division portion 51 has been removed, the second weight division portion 52 can also be removed.

[0028] As shown in Figure 2, the weight pressing mechanism 70 is mounted on the uppermost weight adjusting body 50 among the multiple weight adjusting bodies 50, and is configured to press the weight body 40 and the weight adjusting bodies 50 with its own weight. The weight pressing mechanism 70 according to this embodiment may also include a damper weight mechanism 71 configured as a dynamic vibration absorber to reduce vibrations of the counterweight device 20 during lifting and lowering. The damper weight mechanism 71 will be described below.

[0029] As shown in Figure 2, the damper weight mechanism 71 may include a damper support base 72, a weight support base 73, a plurality of damper weights 74, a plurality of elastic bodies 75, a plurality of damper stoppers 76, and a retaining member 77.

[0030] The damper support base 72 is located inside the weight frame 30 and above the weight adjustment body 50. The damper support base 72 rests on the uppermost weight adjustment body 50 among the multiple weight adjustment bodies 50. The damper support base 72 is slidable vertically relative to the vertical beam 32.

[0031] The configuration of the damper support base 72 is arbitrary, but in the example shown in Figure 2, the damper support base 72 may include a contact plate 72a that abuts against the upper surface of the weight adjustment body 50 located at the top, a support base body 72b positioned above the contact plate 72a, and a pair of support beams 72c connecting the contact plate 72a and the support base body 72b. The contact plate 72a and the support base body 72b are spaced apart in the vertical direction. The pair of support beams 72c are spaced apart in the horizontal direction. Multiple support weights 72d may be arranged between the contact plate 72a and the support base body 72b. The support weights 72d may be placed on and fixed to the upper surface of the contact plate 72a. The support weights 72d may be placed horizontally between the pair of support beams 72c and stacked in the vertical direction.

[0032] The weight support base 73 is positioned above the damper support base 72. The weight support base 73 is spaced apart from the damper support base 72. The weight support base 73 is slidable vertically relative to the vertical beam 32. The weight support base 73 may be connected to the support base body 72b of the damper support base 72 via an elastic body 75.

[0033] The damper weight 74 is supported by a weight support base 73. The damper weight 74 is placed horizontally inside the weight frame 30 and stacked vertically on the weight support base 73. Similar to the weight 40 described above, the damper weight 74 includes protrusions (not shown) located at both ends in the horizontal direction, and these protrusions may be inserted into recesses 32a of the vertical beam 32 and engage with the vertical beam 32. The damper weight 74 is slidable vertically relative to the vertical beam 32.

[0034] The elastic body 75 is interposed between the damper support base 72 and the weight support base 73. The elastic body 75 may be made of, for example, a coil spring or rubber. The elastic body 75 is compressed by the load of the damper weight 74. With this configuration, the damper weight mechanism 71 can act to cancel out vibrations of the counterweight device 20.

[0035] The damper stopper 76 is interposed between the damper support base 72 and the weight support base 73. The damper stopper 76 prevents the weight support base 73 from approaching the support base body 72b. The damper stopper 76 may be made of, for example, a bolt.

[0036] The retaining member 77 is placed on the upper surface of the damper weight 74. The retaining member 77 is placed on the uppermost damper weight 74 among the multiple damper weights 74 and presses down on the damper weight 74 from above. The retaining member 77 extends laterally from one vertical beam 32 to the other vertical beam 32. The retaining member 77 is slidable vertically relative to the vertical beam 32. The retaining member 77 may also hold down the damper weight 74 using retaining bolts (not shown). The retaining bolts may extend vertically and pass through the multiple damper weights 74, fixing the multiple damper weights 74 and the retaining member 77 to the weight support base 73. In this way, the weight support base 73, the multiple damper weights 74 and the retaining member 77 may be integrated and slidable vertically relative to the vertical beam 32.

[0037] The damper weight mechanism 71 includes a suspension hole 78. The suspension hole 78 is an example of a suspension point. In this embodiment, the suspension hole 78 may be formed at any position as long as the damper weight mechanism 71 can be lifted. For example, the suspension hole 78 may be formed in the damper support base 72. In the example shown in Figure 2, the suspension hole 78 may be formed in the support beam 72c described above.

[0038] Next, the operation of this embodiment, which has the above configuration, will be described. Here, a method for adjusting the weight balance in the counterweight device 20 shown in Figure 2 will be described.

[0039] First, as shown in Figure 6, the lifting machine 80 is installed. The lifting machine 80 may be attached, for example, to a connecting beam 81 connected to the upper end of the weight guide rail 9 for the counterweight device 20. A hoisting machine 6 may be installed on the connecting beam 81. The lifting machine 80 may be suspended from the connecting beam 81.

[0040] Next, the damper weight mechanism 71 and the lifting machine 80 are connected using the lifting rope 82. In this case, the hooks (not shown) attached to the lifting rope 82 are hung on the two suspension holes 78 formed in the support beam 72c of the damper support base 72, and the lifting rope is also hung on the hook 80a of the lifting machine 80.

[0041] Next, the lifting machine 80 is driven to raise the damper weight mechanism 71. Figure 6 shows an example where the damper weight mechanism 71 has been raised by a lifting distance δ. In this embodiment, as shown in Figure 5, the first weight division portion 51 of the weight adjustment body 50 can be removed while rotating it in the horizontal plane. Therefore, in order to remove the weight adjustment body 50, it is sufficient to release the weight adjustment body 50 from the load of the damper weight mechanism 71, and the lifting distance δ of the damper weight mechanism 71 may be short.

[0042] Next, the weight bolt 55 of the uppermost weight adjustment body 50 among the multiple weight adjustment bodies 50 is removed. This separates the first weight division section 51 and the second weight division section 52.

[0043] Next, as shown in Figure 5, the first weight division section 51 is rotated clockwise when viewed from above, with the first protrusion 51a as the pivot point. This allows the first weight division section 51 to be removed from the weight frame 30.

[0044] Subsequently, by removing the second weight division section 52 from the weight frame 30, one weight adjustment body 50 can be removed from the weight frame 30.

[0045] On the other hand, when adding a weight adjuster 50, the additional weight adjuster 50 can be mounted on the weight frame 30 by following the reverse procedure of the above-described procedure.

[0046] As described above, according to this embodiment, the weight adjustment body 50 can be released from the load of the weight pressing mechanism 70 by lifting the weight pressing mechanism 70 using the suspension hole 78. As a result, the first weight division section 51 and the second weight division section 52 can be individually removed from the weight frame 30 by removing the weight bolt 55. Thus, the weight adjustment body 50 can be removed from the weight frame 30. Furthermore, the weight adjustment body 50 can be inserted into the weight frame 30 in the reverse procedure of removal. Therefore, the attachment and detachment of the weight adjustment body 50 to the weight frame 30 can be easily performed, improving the work efficiency of weight balance adjustment.

[0047] Furthermore, according to this embodiment, as described above, the weight adjustment body 50 can be detached from the weight frame 30 if it can be released from the load of the weight pressing mechanism 70. This eliminates the need to remove the weight pressing mechanism 70. In this respect as well, the work efficiency of weight balance adjustment can be improved.

[0048] Furthermore, according to this embodiment, the first contact surface 53 of the first weight division portion 51 includes a first front-side inclined surface 53a extending from the front surface 50a and a first rear-side inclined surface 53b extending from the rear surface 50b. The second contact surface 54 of the second weight division portion 52 includes a second front-side inclined surface 54a extending from the front surface 50a and a second rear-side inclined surface 54b extending from the rear surface 50b. As a result, with the weight bolt 55 removed, one of the first weight division portion 51 and the second weight division portion 52 can be removed from the weight frame 30 by rotating it in a horizontal plane with the convex portion as a pivot point. Therefore, the weight adjustment body 50 can be easily attached to and detached from the weight frame 30, improving the work efficiency of weight balance adjustment.

[0049] Furthermore, according to this embodiment, the first front-facing inclined surface 53a and the first rear-facing inclined surface 53b are formed continuously, and the second front-facing inclined surface 54a and the second rear-facing inclined surface 54b are formed continuously. This makes it easier to avoid interference between the first weight division portion 51 and the second weight division portion 52 when one of them is rotated around the convex portion as a pivot point. As a result, the attachment and detachment of the weight adjustment body 50 to the weight frame 30 can be made even easier, and the work efficiency of weight balance adjustment can be further improved.

[0050] Furthermore, according to this embodiment, the head 55a of the weight bolt 55 is located inside the counterweight device 20, relative to the front surface 40a of the weight body 40. This prevents the head 55a of the weight bolt 55 from interfering with other structural parts around the counterweight device 20.

[0051] Furthermore, according to this embodiment, the stopper 60 is positioned on the opposite side of the weight adjustment body 50 from the head 55a of the weight bolt 55, and extends from one vertical beam 32 to the other vertical beam 32. This prevents the other part from falling out of the weight frame 30 on the rear side 50b when removing the weight bolt 55 and taking out one of the first weight division part 51 and the second weight division part 52 from the weight frame 30 on the front side 50a. Therefore, the removal of the weight adjustment body 50 can be performed efficiently.

[0052] Furthermore, according to this embodiment, the weight pressing mechanism 70 is configured as a dynamic vibration absorber. As a result, the weight pressing mechanism 70 can reduce vibrations of the counterweight device 20 during lifting and lowering.

[0053] In the above-described embodiment, an example was given in which the counterweight device 20 includes a stopper 60. However, this embodiment is not limited to this, and the counterweight device 20 does not need to include a stopper 60 as long as the first weight division portion 51 and the second weight division portion 52 of the weight adjustment body 50 can be prevented from falling off the weight frame 30.

[0054] Furthermore, in the above-described embodiment, an example was described in which the first front-side inclined surface 53a and the first rear-side inclined surface 53b of the first contact surface 53 are formed continuously, and the second front-side inclined surface 54a and the second rear-side inclined surface 54b of the second contact surface 54 are formed continuously. However, this embodiment is not limited to this. For example, as shown in Figure 7, the first contact surface 53 may include the first contact body surface 53d, and the second contact surface 54 may include the second contact body surface 54d.

[0055] The first contact body surface 53d connects the first front inclined surface 53a and the first rear inclined surface 53b. The first contact body surface 53d is aligned laterally in a plan view. The second contact body surface 54d connects the second front inclined surface 54a and the second rear inclined surface 54b. The second contact body surface 54d is aligned laterally in a plan view. The second contact body surface 54d may be in contact with the first contact body surface 53d. The first contact body surface 53d and the second contact body surface 54d may be located at the center of the weight adjustment body 50 in the front-rear direction. The two weight bolts 55 may be arranged to pass through the first contact body surface 53d and the second contact body surface 54d.

[0056] In the example shown in Figure 7, the weight bolt 55 penetrates the first contact body surface 53d and the second contact body surface 54d. This allows the length of each weight bolt 55 to be standardized, improving the ease of fastening the weight bolts 55. Furthermore, the first weight division section 51 and the second weight division section 52 can be firmly fastened together by the weight bolt 55.

[0057] In the embodiment described above, the weight pressing mechanism 70 was described in an example in which a damper weight mechanism 71 configured as a dynamic vibration absorber to reduce vibration of the counterweight device 20 during lifting and lowering was included. However, this embodiment is not limited to this. For example, as shown in Figure 8, the weight pressing mechanism 70 may include a support base 90 and a control panel 91 fixed on the support base 90. The support base 90 is located inside the weight frame 30 and above the weight adjustment body 50. The support base 90 is placed on the uppermost weight adjustment body 50 among the multiple weight adjustment bodies 50. The support base 90 is slidable in the vertical direction relative to the vertical beam 32. Two suspension holes 78 may be formed in the support base 90. The control panel 91 may be the control panel 11 shown in Figure 1. The support base 90 and the control panel 91 can be lifted using a lifting machine 80, etc., as shown in Figure 6. A battery panel 92 may be fixed to the support base 90 instead of the control panel 91.

[0058] According to the embodiments described above, the work efficiency of weight balance adjustment can be improved.

[0059] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0060] 20: Counterweight device, 30: Weight frame, 32: Vertical beam, 32a: Recess, 40: Weight body, 40a: Front view, 50: Weight adjustment body, 50a: Front view, 50b: Rear view, 51: First weight division section, 51a: First protrusion, 52: Second weight division section, 52a: Second protrusion, 53: First contact surface, 53a: First front-side inclined surface, 53b: First rear-side inclined surface, 53d: First contact body surface, 54: Second contact surface, 54a: Second front-side inclined surface, 54b: Second rear-side inclined surface, 54d: Second contact body surface, 55: Weight bolt, 55a: Head, 60: Stopper, 70: Weight pressing mechanism, 71: Damper weight mechanism, 91: Control panel, 92: Battery panel

Claims

1. A weight frame including a pair of vertical beams spaced apart in the first direction, each containing a recess that opens inward, Multiple weights stacked on the aforementioned weight frame, Multiple weight adjusters are stacked on the weight located at the uppermost position among the multiple weights, A weight pressing mechanism is placed on the weight adjusting body located at the uppermost position among a plurality of weight adjusting bodies, and presses the weight and the weight adjusting body with its own weight, comprising a weight pressing mechanism including a suspension point, Equipped with, The weight adjustment body includes a first weight division portion including a corresponding first protrusion inserted into one of the recesses, a second weight division portion including a corresponding second protrusion inserted into the other recess, and a plurality of weight bolts. The first weight division portion includes a first contact surface, The second weight division portion includes a second contact surface that contacts the first contact surface, The first contact surface and the second contact surface extend in a direction that intersects the second direction which is perpendicular to the first direction in a plan view. The weight bolt fastens the first weight division portion and the second weight division portion of the weight adjustment body from one side in the second direction. The first weight division section and the second weight division section can be individually removed from the weight frame by removing the weight bolt. Elevator counterweight mechanism.

2. The weight adjuster includes a first side surface extending in the first direction and a second side surface located opposite to the first side surface and extending in the first direction. The first contact surface includes a first inclined surface extending in a direction inclined from the first side surface in a plan view toward the second direction, and a second inclined surface extending in a direction inclined from the second side surface in a plan view toward the second direction. The second contact surface is a third inclined surface extending in a direction inclined from the first side surface to the second direction in a plan view, and includes a third inclined surface facing the first inclined surface, and a fourth inclined surface extending in a direction inclined from the second side surface to the second direction in a plan view, and includes a fourth inclined surface facing the second inclined surface. The counterweight device for an elevator according to claim 1.

3. The first inclined surface and the second inclined surface are formed in a continuous manner. The third and fourth inclined surfaces are formed in a continuous manner. The counterweight device for an elevator according to claim 2.

4. The first contact surface includes a first contact body surface oriented in the first direction that connects the first inclined surface and the second inclined surface, The second contact surface is a second contact body surface aligned with the first direction that connects the third inclined surface and the fourth inclined surface, and includes the second contact body surface that contacts the first contact body surface. The weight bolt penetrates the first contact body surface and the second contact body surface. The counterweight device for an elevator according to claim 2.

5. The head of the weight bolt is located inside the counterweight device, beyond the outer edge of the weight body. The counterweight device for an elevator according to any one of claims 1 to 4.

6. The weight adjustment body is further provided with a stopper positioned on the opposite side of the weight bolt from the head, and extending from one vertical beam to the other vertical beam. The counterweight device for an elevator according to claim 5.

7. The aforementioned weight pressing mechanism includes a damper weight mechanism configured as a dynamic vibration absorber to reduce vibrations of the counterweight device during lifting and lowering. The counterweight device for an elevator according to any one of claims 1 to 4.

8. The weight pressing mechanism includes a control panel or a battery panel. The counterweight device for an elevator according to any one of claims 1 to 4.

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