Elevator counterweight device

Abstract

To provide a counterweight device for an elevator which can easily adjust the weight balance even when a damper weight mechanism is installed. [Solution] An elevator counterweight device according to an embodiment includes a damper weight mechanism mounted on a main weight body. The damper weight mechanism includes a suspension point used when lifting the damper weight mechanism. When the damper weight mechanism is located in a first position, a lower portion of a cutout is covered by a damper longitudinal beam. When the damper weight mechanism is located in a second position, a portion of the cutout above the main weight body is exposed from the damper longitudinal beam.

Description

[Technical Field]

[0001] The embodiments relate to a counterweight device for an elevator. [Background technology]

[0002] An elevator system is known in which a car and a counterweight are connected via a main rope, and the car is raised and lowered by winding up the main rope. The counterweight is constructed by stacking multiple weights vertically on a weight frame.

[0003] A damper weight mechanism may be mounted above the counterweight.

[0004] On the other hand, the damper weight mechanism may also be placed below the weight frame. In this case, the shape and weight of the damper weight mechanism are limited to avoid contact with other equipment, such as the buffer installed at the bottom of the elevator shaft. This may result in insufficient vibration absorption. Installing the damper weight mechanism above the weight body is advantageous in that it eliminates the need to consider contact with other equipment and can achieve sufficient vibration absorption in a small space, potentially contributing to space savings.

[0005] The damper weight mechanism, which is mounted above the weight, is placed on the weight after the weight is stacked on the weight frame of the counterweight. When adjusting the weight balance of the weight after the damper weight mechanism is mounted, the damper weight mechanism is disassembled and the weight balance of the weight is adjusted. After the adjustment, the damper weight mechanism is reassembled. This makes the weight balance adjustment work take a lot of work time. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2023-183948 Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the embodiment is to provide an elevator counterweight device that can easily adjust the weight balance even when a damper weight mechanism is installed. [Means for solving the problem]

[0008] An elevator counterweight device according to an embodiment includes a main frame including a pair of main longitudinal beams, multiple main weights arranged inside the main frame and supported by the main frame, and a damper weight mechanism mounted on the uppermost main weight of the multiple main weights and pressing the main weight by its own weight. The damper weight mechanism includes a damper frame including a damper lower beam and a pair of damper vertical beams slidable in the vertical direction along the corresponding main longitudinal beams, multiple damper weights arranged inside the damper frame and mounted on the damper lower beams, elastic members interposed between the damper weights and the damper lower beams, and a suspension base formed on the damper frame and used to lift the damper weight mechanism. The damper weight mechanism is vertically movable between a first position where it is mounted on the main weight and a second position above the first position. The main longitudinal beam includes a notch for inserting and removing the main weight. When the damper weight mechanism is in the first position, a lower portion of the cutout is covered by the damper longitudinal beam, and when the damper weight mechanism is in the second position, a portion of the cutout above the main weight is exposed from the damper longitudinal beam. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic cross-sectional view showing an elevator apparatus according to the present embodiment. [Figure 2] FIG. 2 is a front view showing the counterweight device according to this embodiment. [Figure 3] 3 is a plan cross-sectional view of a damper frame of the counterweight device shown in FIG. 2. FIG. [Figure 4] FIG. 4 is a perspective view showing the damper weight mechanism shown in FIG. [Figure 5] FIG. 5 is a perspective view showing the damper frame shown in FIG. [Figure 6] FIG. 6 is a top view of the damper frame shown in FIG. [Figure 7] 7 is a front view showing a state in which the damper weight mechanism of the counterweight device shown in FIG. 2 is lifted. [Figure 8] FIG. 8 is a flowchart showing a method for adjusting the weight balance of the counterweight device according to this embodiment. [Figure 9] FIG. 9 is a flowchart showing a general method for adjusting the weight balance of a counterweight device. [Figure 10] FIG. 10 is a plan view showing a modified example of the counterweight device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an elevator counterweight device according to this embodiment will be described with reference to the drawings. First, the elevator device according to this embodiment will be described.

[0011] As shown in FIG. 1, elevator apparatus 1 includes a car 3 and a counterweight 4 disposed in a hoistway 2. The car 3 and counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave 6a and a camber sheave 7 provided on a hoisting machine 6. The hoisting machine 6 winds up the main rope 5, causing the car 3 and counterweight 4 to rise and fall. The car 3 rises and falls while being guided by a car guide rail 8 extending vertically. The counterweight 4 rises and falls while being guided by a counterweight guide rail 9 extending vertically. The hoisting machine 6 is installed in a machine room 10 provided 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 apparatus 1, including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 6 in response to hall calls and car calls, and lands the car 3 at the hall 12 of the floor for which the call is registered.

[0012] The elevator system 1 is not limited to the configuration shown in Fig. 1. For example, it may be a so-called machine room-less elevator system. In other words, the machine room 10 may not be provided, and the hoisting machine 6 and the control panel 11 may be provided above the hoistway 2, etc.

[0013] Next, an elevator counterweight device according to this embodiment (hereinafter simply referred to as counterweight device 20) will be described. The counterweight device 20 corresponds to the counterweight 4 shown in FIG. 1. In the following description, the first direction is the horizontal direction, the second direction is the front-to-rear direction, and the third direction is the up-to-down direction. The left-to-right direction when viewing the counterweight device 20 from the front corresponds to the horizontal direction. The front is the surface facing the inside of the hoistway 2. The front-to-rear direction is the direction perpendicular to the horizontal direction in a plan view, and the up-to-down direction is the direction perpendicular to the horizontal direction and the front-to-rear direction.

[0014] As shown in FIG. 2, the counterweight device 20 may include a main frame 30, a main weight body 40, and a damper weight mechanism 50.

[0015] The main frame 30 includes a main lower beam 31, a pair of main vertical beams 32, and a main upper beam 33.

[0016] The main lower beam 31 extends in the horizontal direction. A main weight 40 is placed on the main lower beam 31.

[0017] The main longitudinal beams 32 extend upward from both lateral ends of the main lower beam 31. The main longitudinal beams 32 may be fixed to the corresponding ends of the main lower beam 31. The main longitudinal beams 32 are spaced apart in the lateral direction. As shown in FIG. 3 , the main longitudinal beams 32 may include recesses 32a that open to the inside.

[0018] As shown in FIG. 3, the main longitudinal beam 32 may be a U-shaped steel. The main longitudinal beam 32 may include a longitudinal beam base portion 32b and a pair of longitudinal beam protrusions 32c protruding from the longitudinal beam base portion 32b toward the inside of the main frame 30. The longitudinal beam base portion 32b may be formed flat in the up-down direction and the front-rear direction. The longitudinal beam protrusions 32c may protrude toward the main weight 40 and extend in the up-down direction. The pair of longitudinal beam protrusions 32c are spaced apart in the front-rear direction.

[0019] As shown in FIG. 2 , each main longitudinal beam 32 includes a notch 34 for inserting and removing the main weight 40. The notch 34 is formed in at least one of the longitudinal beam protruding portions 32c. The notch 34 may be formed in the longitudinal beam protruding portion 32c arranged on the front side. The notch 34 may or may not be formed in the longitudinal beam protruding portion 32c arranged on the rear side. The notch 34 is formed to extend in the vertical direction. The notch 34 may extend from the upper portion of the main longitudinal beam 32 to the middle portion of the main longitudinal beam 32. The lower portion of the notch 34 may be located above the main weight 40. The lower portion of the notch 34 may be located above the main weight 40 located at the top of the multiple main weights 40.

[0020] 2, the main upper beam 33 extends laterally from the upper end of one main longitudinal beam 32 to the upper end of the other main longitudinal beam 32. Both lateral ends of the main upper beam 33 may be fixed to the corresponding main longitudinal beam 32.

[0021] The main weight 40 is supported by the main lower beams 31 inside the main frame 30. The main weight 40 is placed on the main lower beams 31 and stacked. The main weight 40 is engaged with the main longitudinal beams 32. As shown in FIG. 3, both lateral ends of the main weight 40 are engaged with the main longitudinal beams 32. More specifically, the main weight 40 includes a pair of protrusions 40a inserted into the recesses 32a of the main longitudinal beams 32 described above, and the protrusions 40a are inserted into the recesses 32a of the main longitudinal beams 32 to engage with the main longitudinal beams 32. The main weight 40 may be made primarily of concrete or may be made of a metal plate. As shown in FIG. 2, a relatively thick main weight 40 made of concrete may be disposed below, and a relatively thin main weight 40 made of a metal plate may be disposed above.

[0022] 2, the damper weight mechanism 50 is placed on the uppermost main weight body 40 among the multiple main weight bodies 40, and is configured to press the main weight body 40 with its own weight. The damper weight mechanism 50 may be configured as a dynamic vibration absorber for reducing vibration of the counterweight device 20 during lifting and lowering. The damper weight mechanism 50 will be described below.

[0023] As shown in Figures 2 and 4, the damper weight mechanism 50 may include a damper frame 60, a plurality of damper weights 70, a plurality of elastic members 71, a damper support base 72, a spacer 73, and a plurality of stoppers 74.

[0024] The damper frame 60 is placed on the main weight body 40. The damper frame 60 includes a damper lower beam 61, a pair of damper vertical beams 62, a damper upper beam 63, and a suspension hole 64.

[0025] The damper lower beam 61 extends in the horizontal direction. The damper lower beam 61 is configured to be able to abut against the upper surface of the main weight 40, and is configured so that the damper weight 70 can be placed thereon.

[0026] As shown in Figures 4 and 5, the damper longitudinal beams 62 extend upward from both lateral end portions of the damper lower beam 61. The damper longitudinal beams 62 are slidable in the up and down direction along the corresponding main longitudinal beams 32. The damper longitudinal beams 62 may be fixed to the corresponding end portions of the damper lower beam 61. The pair of damper longitudinal beams 62 are spaced apart in the lateral direction. Each of the damper longitudinal beams 62 may include a pair of longitudinal beam members 62a and a connecting member 62b.

[0027] The vertical beam members 62a extend in the up-down direction along the corresponding main vertical beams 32. The vertical beam members 62a may be formed flat in the up-down and lateral directions. As shown in FIGS. 4 and 6 , the vertical beam members 62a are slidable on the front and rear surfaces of the main vertical beams 32. More specifically, the vertical beam member 62a arranged on the front side is slidable on the front surface of the corresponding main vertical beam 32. The vertical beam member 62a arranged on the rear side is slidable on the rear surface of the corresponding main vertical beam 32. The vertical beam member 62a arranged on the front side is an end portion of the damper lower beam 61 in the lateral direction and is fixed to the front surface of the damper lower beam 61. The vertical beam member 62a arranged on the rear side is an end portion of the damper lower beam 61 in the lateral direction and is fixed to the rear surface of the damper lower beam 61.

[0028] As shown in Figures 4 and 5, the connecting member 62b connects the upper ends of a pair of vertical beam members 62a. As shown in Figures 4 and 6, the connecting member 62b is formed so as to surround the corresponding main vertical beam 32 from the outside when viewed from above. As shown in Figures 4 to 6, the connecting member 62b is formed in a U-shape when viewed from above. The main vertical beam 32 penetrates a space formed inside the connecting member 62b, and the connecting member 62b is slidable on the vertical beam base portion 32b of the main vertical beam 32.

[0029] The connecting member 62b includes an abutting portion 62c. The abutting portion 62c abuts against the outer surface of the corresponding main longitudinal beam 32 in the lateral direction. The abutting portion 62c abuts against the longitudinal beam base portion 32b. As shown in FIG. 5, the abutting portion 62c has a bolt hole 62d formed therein, through which a frame bolt 65 (described later) passes. The bolt hole 62d may be formed in an elongated hole shape along the vertical direction.

[0030] As shown in FIGS. 4 and 5 , the damper upper beam 63 connects a pair of damper longitudinal beams 62. The upper beam 63 extends laterally from the upper end of one damper longitudinal beam 62 to the upper end of the other damper longitudinal beam 62. The damper upper beam 63 may include a pair of upper beam members 63a. The upper beam members 63a extend laterally. The upper beam members 63a may be formed flat in the up-down and lateral directions. Both lateral ends of the damper upper beam 63 are fixed to the corresponding damper longitudinal beams 62. As shown in FIG. 6 , one end of the upper beam member 63a arranged on the front side is fixed to the vertical beam member 62a arranged on the front side of the corresponding damper vertical beam 62, and the other end is fixed to the vertical beam member 62a arranged on the front side of the other damper vertical beam 62. The upper beam member 63a arranged on the front side is fixed to the rear surface of the vertical beam member 62a arranged on the front side. One end of the upper beam member 63a arranged on the rear side is fixed to the vertical beam member 62a arranged on the rear side of the corresponding damper vertical beam 62, and the other end is fixed to the vertical beam member 62a arranged on the rear side of the other damper vertical beam 62. The upper beam member 63a arranged on the rear side is fixed to the front surface of the vertical beam member 62a arranged on the rear side.

[0031] As shown in Figures 4 and 5, the hanging holes 64 are formed in the damper frame 60 and are used when lifting the damper weight mechanism 50. The hanging holes 64 are an example of a hanging point. The hanging holes 64 are formed in each upper beam member 63a of the damper upper beam 63. As long as the damper weight mechanism 50 can be lifted, the hanging point is not limited to the hanging holes 64. Furthermore, as long as the damper weight mechanism 50 can be lifted, the hanging holes 64 are not limited to being formed in the damper upper beam 63.

[0032] As shown in FIGS. 2 and 4 , the damper weights 70 are supported by the damper lower beams 61 of the damper frame 60. The damper weights 70 are placed horizontally inside the damper frame 60 and stacked vertically. The damper weights 70 are placed on the damper lower beams 61 via elastic members 71 and stacked. The damper weights 70 may be made of metal plates. The damper weights 70 are attached to the damper frame 60 by a plurality of weight bolts 75 (not shown). The weight bolts 75 may fix the damper weights 70 to a damper support base 72 (described later). The weight bolts 75 may pass through a plurality of damper weights 70.

[0033] The elastic member 71 is interposed between the damper weight 70 and the damper lower beam 61. A plurality of elastic members 71 are interposed between the damper weight 70 and the damper lower beam 61. The elastic members 71 may be made of, for example, a coil spring or rubber. The elastic members 71 are compressed by receiving the load of the damper weight 70. With this configuration, the damper weight mechanism 50 can act to cancel out vibrations of the counterweight device 20.

[0034] The damper support base 72 is interposed between the elastic member 71 and the damper weight 70. The damper support base 72 may be formed flat in the lateral and longitudinal directions. The damper weight 70 is placed on the damper support base 72, and the damper support base 72 bears the load of the damper weight 70.

[0035] The spacer 73 is interposed between the damper support base 72 and the damper cone 70. Multiple spacers 73 may be interposed between the damper support base 72 and the damper cone 70. The spacer 73 forms a space between the damper support base 72 and the damper cone 70, preventing the bolts that attach the elastic member 71 and the damper cone 70 from interfering with each other.

[0036] The stopper 74 is interposed between the damper lower beam 61 and the damper support base 72. The stopper 74 prevents the damper support base 72 from coming too close to the damper lower beam 61. The stopper 74 may be formed of, for example, a bolt.

[0037] The damper weight mechanism 50 configured in this manner is movable in the vertical direction between a first position and a second position. The first position is a position where the damper weight mechanism 50 is placed on the main weight body 40, as shown in FIG. 2. The second position is a position above the first position, where the damper weight mechanism 50 is lifted up, as shown in FIG. 7. The damper weight mechanism 50 is movable in the vertical direction relative to the main frame 30.

[0038] As shown in FIG. 2 , when the damper weight mechanism 50 is located at the first position, the lower part of the notch 34 of the main longitudinal beam 32 is covered by the damper longitudinal beam 62. More specifically, the lower part of the notch 34 formed in the longitudinal beam protruding part 32c arranged on the front side of the main longitudinal beam 32 is covered by the vertical beam member 62a arranged on the front side of the damper longitudinal beam 62. Because the vertical beam member 62a is arranged on the front side of the damper longitudinal beam 62, the lower part of the notch 34 is not exposed from the vertical beam member 62a when viewed from the front. The upper part of the notch 34 may be exposed from the vertical beam member 62a. However, as long as a movement space for the damper weight mechanism 50 can be secured, the upper part of the notch 34 may be covered by the vertical beam member 62a. In this case, the entire notch 34 may be covered by the vertical beam member 62a.

[0039] When the damper weight mechanism 50 is located at the first position, the damper vertical beam 62 is bolted to the main vertical beam 32. More specifically, as shown in Fig. 4, the connecting member 62b of the damper vertical beam 62 is fixed to the main vertical beam 32 with a frame bolt 65. The abutting portion 62c of the connecting member 62b is fastened to the vertical beam base portion 32b with the frame bolt 65. When the damper weight mechanism 50 is moved to the second position, the frame bolt 65 is removed.

[0040] As shown in Fig. 7, when the damper weight mechanism 50 is located at the second position, the portion of the cutout 34 above the main weight 40 is exposed from the damper longitudinal beam 62. The second position is a position where the portion of the cutout 34 above the main weight 40 can be exposed from the damper longitudinal beam 62. More specifically, the cutout 34 formed in the longitudinal beam protruding portion 32c arranged on the front side of the main longitudinal beam 32 is not covered by the vertical beam member 62a arranged on the front side of the damper longitudinal beam 62. Therefore, when viewed from the front, the portion of the cutout 34 above the main weight 40 is exposed from the vertical beam member 62a, and the main weight 40 can be inserted and removed through the cutout 34.

[0041] Next, the operation of this embodiment configured as described above will be explained. Here, a method for adjusting the weight balance of the counterweight device 20 shown in Fig. 2 will be explained with reference to Figs.

[0042] First, the main frame 30 of the counterweight device 20 is attached to the counterweight guide rails 9, and then the main weight body 40 is placed on the main lower beam 31 of the main frame 30 (step S1).

[0043] Next, the damper weight mechanism 50 is installed (step S2). In this case, the damper frame 60 is attached to the main frame 30, and then the damper weight 70 is placed on the damper lower beam 61 inside the damper frame 60. The damper weight 70 is inserted from the upper part of the notch 34 of the main longitudinal beam 32, with the damper frame 60 placed on the main weight 40. At this time, the elastic member 71, the stopper 74, the damper support base 72, and the spacer 73 are attached to the damper lower beam 61 of the damper frame 60, and the damper weight 70 is placed on the damper support base 72 via the spacer 73. In this case, the damper weight mechanism 50 is located at the first position where it is placed on the main weight 40, and the damper vertical beam 62 is fixed to the main longitudinal beam 32 with the frame bolts 65 described above. The lower part of the notch 34 formed in the main longitudinal beam 32 is covered by the damper vertical beam 62.

[0044] Next, it is confirmed whether the weight of the counterweight device 20 is within the allowable range (step S3). If the weight of the counterweight device 20 is within the allowable range, the assembly of the counterweight device 20 is completed. On the other hand, if the weight of the counterweight device 20 is outside the allowable range, the process proceeds to the following step S4.

[0045] In step S4, the lifting machine 80 is installed. The lifting machine 80 may be attached to a connecting beam 81 connected to the upper end of the weight guide rail 9 for the counterweight device 20, for example. A hoisting machine 6 may be installed on the connecting beam 81.

[0046] Next, the damper weight mechanism 50 is lifted (step S5). In this case, a hook (not shown) or the like is attached to the tip of the lifting rope 82 suspended from the hook 80a of the crane 80, and the rope is hung in the suspension hole 64 formed in the damper upper beam 63 of the damper frame 60. In addition, the frame bolt 65 described above is removed. Thereafter, the crane 80 is driven to lift the damper weight mechanism 50 relative to the main frame 30. As a result, the damper weight mechanism 50 moves upward and reaches the second position, and the lower part of the notch 34 formed in the main longitudinal beam 32 is exposed from the damper longitudinal beam 62.

[0047] Next, the number of main weights 40 is adjusted (step S6). The main weights 40 are inserted and removed through the lower parts of the cutouts 34 exposed from the damper vertical beams 62. When increasing the number of main weights 40, the main weights 40 are inserted into the main frame 30 through the cutouts 34. On the other hand, when decreasing the number of main weights 40, the main weights 40 are removed from the inside of the main frame 30 through the cutouts 34.

[0048] Next, the damper weight mechanism 50 is lowered from the second position to the first position and placed on the main weight body 40 (step S7). At this time, the cutout portion 34 is covered by the damper vertical beam 62. Subsequently, the lifting rope 82 is removed from the damper weight mechanism 50 (step S8).

[0049] Thereafter, the process returns to step S3, and the weight of the counterweight device 20 is confirmed. If the weight of the counterweight device 20 is within the allowable range, the assembly of the counterweight device 20 is completed. At this time, the lifting machine 80 is removed from the connecting beam 81. On the other hand, if the weight of the counterweight device 20 is outside the allowable range, the above-mentioned steps S4 to S7 are carried out.

[0050] In this way, the weight balance of the weight body can be adjusted.

[0051] In a typical balancing weight device, if the weight of the balancing weight device is determined to be outside the allowable range in step S3, the damper weight mechanism is first disassembled (step S11). The disassembled parts, such as the damper frame and damper weight body, are removed from the main frame 30.

[0052] Next, the number of main weight bodies 40 is adjusted to adjust the weight balance (step S12). Because the damper weight mechanism has been disassembled, the main weight bodies 40 are inserted and removed through the lower part of the cutout portion 34, similar to step S6 described above.

[0053] Next, the damper weight mechanism is installed (step S13). In this case, similarly to step S2 described above, the damper frame is attached to the main frame 30, and then the damper weight is placed inside the damper frame.

[0054] After that, the process returns to step S3 described above to check the weight of the counterweight device. If the weight of the counterweight device is within the allowable range, assembly of the counterweight device is completed. On the other hand, if the weight of the counterweight device is outside the allowable range, the process returns to steps S11 to S13 described above.

[0055] As described above, according to the present embodiment, the damper weight mechanism 50 mounted on the uppermost main weight body 40 among the multiple main weight bodies 40 includes a hanging hole 64 used when lifting the damper weight mechanism 50, and is vertically movable between a first position where the damper weight mechanism 50 is mounted on the main weight body 40 and a second position higher than the first position. When the damper weight mechanism 50 is positioned at the first position, the lower part of the cutout 34 is covered by the damper longitudinal beam 62. When the damper weight mechanism 50 is positioned at the second position, the upper part of the cutout 34 above the main weight body 40 is exposed from the damper longitudinal beam 62. This allows the damper weight mechanism 50 to be lifted using the hanging hole 64 and moved to the second position where the upper part of the cutout 34 above the main weight body 40 is exposed. Therefore, the main weight body 40 can be inserted or removed through the cutout 34, and the number of main weight bodies 40 can be adjusted. As a result, even when the damper weight mechanism 50 is installed, the weight balance can be easily adjusted.

[0056] Furthermore, according to this embodiment, the damper frame 60 includes a damper upper beam 63 that connects a pair of damper vertical beams 62, and the suspension holes 64 are formed in the damper upper beam 63. This allows the lifting ropes 82 to be easily hung in the suspension holes 64, and the damper weight mechanism 50 can be easily lifted.

[0057] Furthermore, according to this embodiment, the damper upper beam 63 is formed with a hanging hole 64 as a hanging point. This makes it possible to more easily hang the lifting rope 82 on the hanging hole 64, and to more easily lift the damper weight mechanism 50. Furthermore, the hanging hole 64 can be prevented from protruding in the front-to-rear direction from the damper frame 60, and interference with other components can be prevented.

[0058] Furthermore, according to this embodiment, when the damper frame 60 is located in the first position, the damper vertical beams 62 are bolted to the main vertical beams 32. This prevents the damper frame 60 from moving relative to the main frame 30, and allows the damper frame 60 to be fixed to the main frame 30.

[0059] Moreover, according to this embodiment, each damper vertical beam 62 includes a contact portion 62c that contacts, in the lateral direction, the outer surface of the corresponding main vertical beam 32. This allows the damper frame 60 to move in the vertical direction along the main vertical beam 32.

[0060] Furthermore, according to this embodiment, the multiple damper weights 70 are attached to the damper frame 60 by weight bolts 75 that pass through the damper weights 70. This prevents the damper weights 70 from moving sideways and in the front-to-rear directions.

[0061] In the above-described embodiment, an example has been described in which the notch portion 34 of the main longitudinal beam 32 extends from the upper portion of the main longitudinal beam 32 to the middle portion of the main longitudinal beam 32. However, the embodiment is not limited to this. For example, as shown in FIG. 10 , the notch portion 34 may extend from the upper portion of the main longitudinal beam 32 to the lower portion of the main longitudinal beam 32. The lower portion of the notch portion 34 shown in FIG. 10 is located at the lower portion of the main longitudinal beam 32. In this case, the damper vertical beam 62 of the damper frame 60 may extend below the damper lower beam 61. More specifically, when the damper weight mechanism 50 is located at the first position, the lower portion of the damper vertical beam 62 may extend to the lower portion of the main longitudinal beam 32. As a result, the lower portion of the notch portion 34 is covered by the damper vertical beam 62. In this case, the convex portion 40a of the main weight body 40 may engage with the vertical beam member 62a of the damper vertical beam 62. When the damper weight mechanism 50 is moved to a second position higher than the first position, the portion of the cutout 34 above the main weight body 40 can be exposed, allowing the main weight body 40 to be inserted or removed. The example shown in Fig. 10 is effective when the number of main weight bodies 40 is small.

[0062] 10, the damper weight mechanism 50 is mounted on the main weight body 40, but the damper weight mechanism 50 does not have to be mounted. More specifically, in the example shown in FIG. 10, the damper weight mechanism 50 may be removed, and the cutout portion 34 of the main longitudinal beam 32 may be covered with a plate member (not shown) instead of the damper longitudinal beam 62. The plate member may be fixed to the main longitudinal beam 32 with bolts or the like. In this way, even in the main frame 30 in which the cutout portion 34 shown in FIG. 10 is formed, the main weight body 40 can be locked with the plate member without using the damper weight mechanism 50.

[0063] According to the embodiment described above, even when the damper weight mechanism 50 is installed, the weight balance can be easily adjusted.

[0064] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0065] 20: balancing weight device, 30: main frame, 32: main longitudinal beam, 34: notch, 40: main weight body, 50: damper weight mechanism, 60: damper frame, 61: damper lower beam, 62: damper vertical beam, 62c: abutment portion, 63: damper upper beam, 64: hanging hole, 70: damper weight body, 71: elastic member, 75: weight body bolt

Claims

1. a main frame including a pair of main longitudinal beams; a plurality of main weights disposed inside the main frame and supported by the main frame; a damper weight mechanism placed on the uppermost main weight among the plurality of main weights and pressing the main weight by its own weight; Equipped with The damper weight mechanism includes: a damper frame including a damper lower beam and a pair of damper vertical beams that are slidable in the up and down direction along the corresponding main vertical beams; a plurality of damper cones disposed inside the damper frame and placed on the damper lower beam; an elastic member interposed between the damper cone body and the damper lower beam; a suspension base formed on the damper frame and used when lifting the damper weight mechanism; Including, the damper weight mechanism is movable in the up-down direction between a first position where the damper weight mechanism is placed on the main weight body and a second position that is higher than the first position, the main longitudinal beam includes a notch for inserting and removing the main weight, When the damper weight mechanism is located at the first position, a lower portion of the notch is covered by the damper longitudinal beam, When the damper weight mechanism is located at the second position, a portion of the cutout portion above the main weight body is exposed from the damper vertical beam. Elevator counterbalance device.

2. The damper frame includes a damper upper beam connecting the pair of damper vertical beams, The suspension point is formed on the damper upper beam.

2. The elevator counterweight device according to claim 1.

3. The suspension point includes a suspension hole formed in the damper upper beam.

3. The elevator counterweight device according to claim 2.

4. When the damper frame is located at the first position, the damper longitudinal beam is bolted to the main longitudinal beam. The elevator balancing weight device according to any one of claims 1 to 3.

5. a direction from one of the pair of main longitudinal beams to the other of the pair of main longitudinal beams is defined as a first direction; Each of the damper longitudinal beams includes an abutment portion that abuts against an outer surface of the corresponding main longitudinal beam in the first direction. The elevator balancing weight device according to any one of claims 1 to 3.

6. The plurality of damper weights are attached to the damper frame by weight bolts that pass through the damper weights. The elevator balancing weight device according to any one of claims 1 to 3.

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