Counterweight and elevator

Abstract

A counterweight has: a frame that is guided by a rail to move; a plurality of first counterweights that are disposed in the frame; a braking mechanism; a lifting mechanism; and a lifting mechanism mounting member. The braking mechanism is connected to the frame and has a brake member that stops movement of the frame by gripping the rail when lifted. The lifting mechanism lifts the brake member. The lifting mechanism mounting member mounts the lifting mechanism to the frame and holds a second counterweight.

Description

Technical Field

[0001] The present invention relates to a counterweight and an elevator having the counterweight. Background Technology

[0002] Bucket-type elevators use slings to connect the car and the counterweight, achieving a balance between their masses. This reduces the load on the traction machine, which is wound with the slings. In elevators with large car masses, it is necessary to increase the mass of the counterweight.

[0003] To increase the mass of the counterweight, one could consider using a heavier counterweight or increasing the size of the counterweight to increase the number of counterweights loaded. However, since heavier counterweights are more expensive, the cost of the counterweight increases when using heavier counterweights.

[0004] Patent Document 1 discloses an elevator counterweight frame structure, which has longitudinal frames, an upper side plate mounted on the upper part of the longitudinal frames, and a lower side plate mounted on the lower part of the longitudinal frames. This elevator counterweight frame structure forms a first receiving portion between pairs of first longitudinal frames and a second receiving portion between pairs of second longitudinal frames. Furthermore, a counterweight is loaded in both the first and second receiving portions.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2009-215034 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, the elevator counterweight frame structure disclosed in Patent Document 1 does not include an emergency stop device. Emergency stop devices are typically located at the bottom of the counterweight frame. Therefore, if an emergency stop device is included, it would be difficult to load the counterweight at the bottom of the frame.

[0010] In view of the above problems, the object of the present invention is to provide a counterweight and an elevator having the counterweight, which can ensure space for loading the counterweight in the lower part of the frame even when an emergency stop device is installed.

[0011] Methods for solving problems

[0012] To solve the above problems and achieve this objective, the counterweight of the present invention comprises: a frame that is guided and moved by a guide rail disposed in a lifting channel; a plurality of first counterweights disposed within the frame; a braking mechanism; a lifting mechanism; and a lifting mechanism mounting member. The braking mechanism is connected to the frame and has a braking element that, by being lifted, clamps the guide rail to stop the movement of the frame. The lifting mechanism lifts the braking element. The lifting mechanism mounting member mounts the lifting mechanism to the frame and holds the second counterweights.

[0013] Furthermore, the elevator of the present invention drives the car and the counterweight connected by slings to move up and down in different directions.

[0014] The effects of the invention

[0015] Based on the balanced counterweight of the above structure, even when an emergency stop device (braking mechanism and lifting mechanism) is installed, it is possible to ensure space for loading the counterweight in the lower part of the frame. Attached Figure Description

[0016] Figure 1 This is a schematic structural diagram of an elevator according to one embodiment.

[0017] Figure 2 This is a front view of the balancing weight in one embodiment.

[0018] Figure 3 This is a side view of the balancing weight in one embodiment.

[0019] Figure 4 This is an enlarged view of the braking mechanism in the balancing counterweight of one embodiment.

[0020] Figure 5 This is a front view of the lifting mechanism in a balancing counterweight according to one embodiment.

[0021] Figure 6 This is a side view of the lifting mechanism in a balancing counterweight according to one embodiment.

[0022] Figure 7 This is an enlarged view of the lifting mechanism mounting components in a balancing counterweight according to one embodiment.

[0023] Figure 8 This is a side view of the buffer platform mounting component in a balancing counterweight according to one embodiment. Detailed Implementation

[0024] 1. Implementation Method

[0025] The following is for reference Figures 1 to 8 The balancing counterweight and elevator of one embodiment will be described. Furthermore, common components are labeled with the same reference numerals in all figures.

[0026] [Elevator Structure]

[0027] First, refer to Figure 1 The structure of an elevator according to one embodiment will be described.

[0028] Figure 1 This is a schematic structural diagram illustrating an example of the structure of an elevator according to one embodiment.

[0029] like Figure 1 As shown, elevator 1 is a so-called machine-room-less elevator, which does not have a machine room above the hoisting channel 100 formed within the building structure. However, the elevator of the present invention is not limited to machine-room-less elevators; it can also be an elevator with a machine room above the hoisting channel 100.

[0030] Elevator 1 has a car 110 that moves up and down in the elevator shaft 100, a traction machine 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, and a sling 170.

[0031] A lifting pulley 111 is provided at the lower part of the car 110. A hoisting cable 170 is wound around the lifting pulley 111. A counterweight-side pulley 33 is provided at the upper part of the counterweight 130. A hoisting cable 170 is wound around the counterweight-side pulley 33.

[0032] The traction machine 120 is located at the bottom of the lifting channel 100. A sling 170 is wound around the traction machine 120. The traction machine 120 uses the sling 170 to raise and lower the car 110 and the counterweight 130 in a bucket-like manner. The drive of the traction machine 120 is controlled by a control unit (not shown).

[0033] The first driven pulley 140 and the second driven pulley 150 are rotatably mounted at the uppermost part of the lifting channel 100. One end and the other end of the sling 170 are fixed at the uppermost part of the lifting channel 100. The sling 170 is wound from the counterweight-side pulley 33 located on the counterweight 130 around the first driven pulley 140, and then sequentially wound around the traction machine 120, the second driven pulley 150, and the lifting pulley 111 of the car 110.

[0034] The traction machine 120, car 110, and counterweight 130 move up and down within the lifting channel 100. Hereinafter, the direction of the up and down movement of the car 110 and counterweight 130 will be defined as the vertical direction.

[0035] [Structure of the counterweight]

[0036] Next, refer to Figure 2 and Figure 3 The structure of the counterweight 130 is explained.

[0037] Figure 2 This is the front view of the counterweight 130. Figure 3 This is a side view of the 130 counterweight.

[0038] like Figure 2 and Figure 3 As shown, the counterweight 130 has a frame 31, multiple counterweight plates 32 mounted on the frame 31, a counterweight side pulley 33, an emergency stop device 34, and a buffer platform 35.

[0039] The frame 31 includes a pair of vertical frames 41A and 41B and a pair of upper frames 42 connecting the upper part of the pair of vertical frames 41A and 41B. The vertical frames 41A and 41B are components that extend in the vertical direction. The vertical frames 41A and 41B are bent and processed into a cross-section that is approximately C-shaped and parallel to the horizontal direction.

[0040] The vertical frames 41A and 41B have a front, a back opposite the front, and sides continuous with the front and back. Hereinafter, the direction in which the front and back of the vertical frames 41A and 41B face each other is defined as the thickness direction of the frame 31. In addition, the direction in which the sides of the pair of vertical frames 41A and 41B face each other is defined as the width direction of the frame 31.

[0041] The upper frame 42 is constructed of a generally T-shaped plate. The upper frame 42 is positioned on top of a pair of longitudinal frames 41A and 41B with its narrower portion facing upwards. Furthermore, the two ends of the wider portion of the upper frame 42 are bolted to the front (or back) of the pair of longitudinal frames 41A and 41B. The pair of upper frames 42 rotatably support the counterweight pulley 33.

[0042] Upper guide shoes 43 are fixed to the upper sides of a pair of vertical frames 41A and 41B, respectively. The upper guide shoes 43 are slidably mounted on the lifting channel 100 (see reference). Figure 1 The guide rail 131 engages with the frame 31. That is, the frame 31 is guided to rise and fall by the guide rail 131.

[0043] Additionally, a bracket 45 is installed in the middle of a pair of longitudinal frames 41A and 41B. This improves the rigidity of the frame 31. Furthermore, multiple counterweight pressing members (not shown) are connected to the inner side of the pair of longitudinal frames 41A and 41B. The multiple counterweight pressing members hold the first counterweight piece 32A among the multiple counterweight pieces 32.

[0044] The emergency stop device 34 has two braking mechanisms 51A and 51B and a lifting mechanism 52 disposed above the two braking mechanisms 51A and 51B. The two braking mechanisms 51A and 51B are bolted to the lower ends of a pair of longitudinal frames 41A and 41B. The two braking mechanisms 51A and 51B have the same structure. The lifting mechanism 52 is mounted to the pair of longitudinal frames 41A and 41B using a lifting mechanism mounting component 53.

[0045] A buffer platform 35 is positioned between two braking mechanisms 51A and 51B. The lower end of the buffer platform 35 is located below the two braking mechanisms 51A and 51B. The buffer platform 35 is fixed to a pair of longitudinal frames 41A and 41B using a buffer platform mounting component 54. The buffer platform 35 is opposite to a buffer device located at the bottom of the lifting channel 100. When the counterweight 130 descends below a predetermined position, the buffer platform 35 contacts the buffer device to mitigate the impact.

[0046] [Structure of the braking mechanism]

[0047] Next, refer to Figure 4 The structure of braking mechanisms 51A and 51B is described.

[0048] Figure 4 This is an enlarged view of the braking mechanism 51A.

[0049] Braking mechanisms 51A and 51B have the same structure. Therefore, braking mechanism 51A will be described here. Figure 4 As shown, the braking mechanism 51A has a housing 61, a pair of braking elements 62A and 62B, a pair of guide elements 63A and 63B, a force-applying element 64, a support element 65, and a lifting rod 66.

[0050] The housing 61 is formed as a frame with a storage chamber 61a opening on the side. The storage chamber 61a has openings on the upper and lower surfaces of the housing 61. Furthermore, the guide rail 131 passes through the storage chamber 61a. The upper surface of the housing 61 is bolted to the lower end of the longitudinal frame 41A.

[0051] A lower guide shoe 44 is fixed on the lower surface of the housing 61 (see reference). Figure 2 The lower guide shoe 44 is positioned vertically opposite the housing 61. The lower guide shoe 44 is slidably disposed in the lifting channel 100 (see reference). Figure 1 The guide rail 131 is engaged.

[0052] The housing 61 houses a pair of braking components 62A and 62B, a pair of guide components 63A and 63B, a force-applying component 64, and a support component 65. The pair of braking components 62A and 62B are positioned opposite each other in the thickness direction of the frame 31, separated by a guide rail 131. Furthermore, in the state prior to the activation of the emergency stop device 34, a predetermined interval is formed between the pair of braking components 62A and 62B and the guide rail 131.

[0053] A pair of brake members 62A and 62B are formed in a wedge shape. The side of one of the brake members 62A and 62B opposite to the guide rail 131 is formed to be parallel to one side of the guide rail 131. In addition, the other side of the opposite side of the side of the brake member 62A and 62B opposite to the guide rail 131 is inclined in a manner that approaches the guide rail 131 from below to above.

[0054] The support member 65 supports a pair of brake members 62A and 62B so that they can move in the thickness direction of the frame 31. Additionally, a lifting rod 66 is connected to the support member 65. Then, when the lifting rod 66 is lifted upwards, the pair of brake members 62A and 62B and the support member 65 move upwards.

[0055] Additionally, a pair of braking elements 62A and 62B are supported by a pair of guide members 63A and 63B, enabling them to move in the vertical direction and the thickness direction of the frame 31. Guide member 63A is fixed to the wall of the receiving chamber 61a within the housing 61. Guide member 63B is supported by the housing 61, enabling it to move in the thickness direction of the frame 31. The pair of guide members 63A and 63B sandwich the guide rail 131 and the pair of braking elements 62A and 62B, and are positioned opposite each other at a predetermined interval in the thickness direction of the frame 31.

[0056] The sides of the guide members 63A and 63B that face the brake members 62A and 62B are inclined in a manner that they approach the guide rail 131 as they face upwards. Therefore, the spacing between the sides of the pair of guide members 63A and 63B that face the brake members 62A and 62B narrows as they face upwards.

[0057] The force-applying component 64 is located between the guide component 63B and the wall of the receiving chamber 61a in the housing 61. The force-applying component 64 applies force to the guide component 63B towards the guide component 63A. The force-applying component 64 can be, for example, a disc spring. In addition, as a force-applying component related to the braking mechanism, a leaf spring or a compression coil spring can also be used.

[0058] The housing 61 is provided with a locking part that locks the guide member 63B toward the guide member 63A. Therefore, the guide member 63B will not move toward the guide member 63A closer than a predetermined position. On the other hand, the guide member 63B can overcome the force of the force-applying member 64 and move away from the guide member 63A.

[0059] When the lifting rod 66 is lifted upwards, a pair of brake members 62A and 62B move upwards relative to a pair of guide members 63A and 63B. As a result, the pair of brake members 62A and 62B engage with the pair of guide members 63A and 63B and move in a direction closer to each other, i.e., closer to the guide rail 131. Furthermore, the brake member 62B is pressed against the guide rail 131 by the force applied by the force member 64 via the guide member 63B. Thus, the lifting (vertical movement) of the counterweight 130 is braked.

[0060] [Upgrade the organization's structure]

[0061] Next, refer to Figure 5 as well as Figure 6The structure of the lifting mechanism 52 will be explained.

[0062] Figure 5 This is the main view of lifting mechanism 52. Figure 6 This is a side view of the lifting mechanism 52.

[0063] like Figure 5 as well as Figure 6 As shown, the lifting mechanism 52 has a lifting mechanism body 71 and a pair of connecting rod components 72A and 72B. A portion of the lifting mechanism body 71 is disposed within the frame 31 below the lifting mechanism mounting component 53 (see reference). Figure 6 This allows for a reduction in the length of the lifting mechanism 52 protruding from the frame 31. Consequently, the counterweight 130 can be made thinner.

[0064] The lifting mechanism body 71 has a rotating shaft 74, a shaft support portion 75 that rotatably supports both ends of the rotating shaft 74, a connecting portion 76, 77 fixed to the rotating shaft 74, and a force-applying member 78 that applies force to the rotating shaft 74 in one direction of rotation.

[0065] The rotation axis 74 extends along the width direction of the frame 31. The axis support portion 75 is formed as a frame with an opening on the front side of the frame 31. The axis support portion 75 has an upper panel 751 forming the upper surface, a lower panel 752 forming the lower surface, a back panel 753 forming the back side, and side panels 754 and 755 forming the side sides.

[0066] The upper panel 751 is bolted to the lifting mechanism mounting component 53, specifically the lifting mechanism fixing part 82 (described later). The lower panel 752 is vertically opposite to the upper panel 751. The back panel 753 is continuous with both the upper panel 751 and the lower panel 752. The side panels 754 and 755 are opposite to each other in the width direction of the frame 31. The side panels 754 and 755 are continuous with the upper panel 751, the lower panel 752, and the back panel 753, respectively.

[0067] Side panels 754 and 755 rotatably support the two ends of the rotating shaft 74. Both ends of the rotating shaft 74 pass through the side panels 754 and 755. Furthermore, a stop 79 is mounted on the outer surface of the side panel 754. The stop 79 contacts the connecting portion 76 in the vertical direction. Thus, the stop 79 locks the rotation of the connecting portion 76.

[0068] like Figure 6As shown, the connecting portion 76 is formed into a generally rectangular plate shape. One end of the connecting portion 76 in the longitudinal direction is fixed to the end of the rotating shaft 74 that protrudes from the side panel 754. Thus, the connecting portion 76 rotates together with the rotating shaft 74. A sling connection portion 761 is provided at the other end of the connecting portion 76 in the longitudinal direction. The sling connection portion 761 is connected to a speed regulator sling (not shown). In addition, a connecting rod member 72A is connected to the middle part of the connecting portion 76 in the longitudinal direction.

[0069] like Figure 5 As shown, the connecting portion 77 is formed into a generally rectangular plate shape that is shorter than the connecting portion 76. One end of the connecting portion 77 in the longitudinal direction is fixed to the end of the rotating shaft 74 that protrudes from the side panel 755. Thus, the connecting portion 77 rotates together with the rotating shaft 74. A connecting rod member 72A is connected to the other end of the connecting portion 77 in the longitudinal direction.

[0070] The force-applying component 78 is a torsion spring through which the rotating shaft 74 passes. The force-applying component 78 is disposed between the side panels 754 and 755 of the shaft support 75. The force-applying component 78 is... Figure 6 A force is applied to the rotating shaft 74 in a clockwise direction. As a result, the connecting part 76 connected to the rotating shaft 74 is subjected to a clockwise force. Consequently, the downward-facing side of the connecting part 76 abuts against the stop member 79. The connecting part 76, which abuts against the stop member 79, stops in a position where its length direction is approximately parallel to the thickness direction (horizontal direction) of the frame 31.

[0071] The governor cable (not shown) is formed into a loop with its two ends connected. The governor cable moves cyclically in conjunction with the lifting and lowering motion of the counterweight 130. Therefore, the moving speed of the governor cable is linked to the lifting and lowering speed of the counterweight 130. When the moving speed of the governor cable stops, the relative position of the counterweight 130 and the governor cable changes, and the connecting part 76 overcomes the force applied by the force-applying component 78. Figure 6 Rotate counterclockwise along the middle.

[0072] Connecting rod components 72A and 72B are components that are bent into an approximate L-shape. For example... Figure 5 As shown, one end of the connecting rod component 72A is connected via collar 721 (see reference). Figure 2 The connecting rod 72A is rotatably connected to the connecting part 76. The other end of the connecting rod 72A is rotatably connected to the lifting rod 66 of the braking mechanism 51A. If the connecting part 76 rotates against the force applied by the force member 78, the connecting rod 72A is displaced according to the rotation of the connecting part 76, thereby lifting the lifting rod 66 of the braking mechanism 51A upward.

[0073] One end of the connecting rod component 72B is rotatably connected to the connecting part 77 (see reference). Figure 5The other end of the connecting rod component 72B is rotatably connected to the lifting rod 66 of the braking mechanism 51B. If the connecting part 77 rotates together with the rotating shaft 74 and the connecting part 76 against the force applied by the force member 78, the connecting rod component 72B will be displaced according to the rotation of the connecting part 77, thereby lifting the lifting rod 66 of the braking mechanism 51B upward.

[0074] [Structure of the lifting mechanism mounting components]

[0075] Next, refer to Figure 2 as well as Figure 7 The structure of the lifting mechanism mounting component 53 is described.

[0076] Figure 7 This is an enlarged view of the components installed in the lifting mechanism.

[0077] like Figure 2 as well as Figure 7 As shown, the lifting mechanism mounting component 53 has a pair of longitudinal frame connecting portions 81A and 81B and a lifting mechanism fixing portion 82. The pair of longitudinal frame connecting portions 81A and 81B are formed in the shape of rectangular plates. The longitudinal frame connecting portion 81A is fixed to the front of the pair of longitudinal frames 41A and 41B by bolts. The longitudinal frame connecting portion 81B is fixed to the back of the pair of longitudinal frames 41A and 41B by bolts.

[0078] like Figure 7 As shown, a pair of longitudinal frame connecting parts 81A and 81B are opposite each other in the thickness direction of the frame 31. The pair of longitudinal frame connecting parts 81A and 81B are connected by bolts 84 and nuts 85. Furthermore, the pair of longitudinal frame connecting parts 81A and 81B hold multiple second counterweights 32B among the multiple counterweights 32.

[0079] Multiple second counterweights 32B are disposed between a pair of longitudinal frame connecting portions 81A and 81B. Each second counterweight 32B has a bolt through hole for a bolt 84 to pass through. That is, the multiple second counterweights 32B are mounted to the pair of longitudinal frame connecting portions 81A and 81B using bolts 84 and nuts 85.

[0080] like Figure 7 As shown, the lifting mechanism fixing part 82 is a component bent into an L-shape. The lifting mechanism fixing part 82 has a longitudinal frame fixing plate 821 and a lifting mechanism fixing plate 822. The longitudinal frame fixing plate 821 is fixed to the longitudinal frame connecting part 81A by bolts. The shaft support part 75 of the lifting mechanism 52 is fixed to the lifting mechanism fixing plate 822 by bolts.

[0081] Furthermore, the lifting mechanism fixing part 82 can also be fixed to the longitudinal frame connecting part 81B. In addition, as a lifting mechanism mounting component, the lifting mechanism fixing part can also be bent and formed into a roughly C-shape and fixed to a pair of longitudinal frame connecting parts 81A and 81B.

[0082] [Structure of the buffer platform mounting components]

[0083] Next, refer to Figure 2 as well as Figure 8 The structure of the buffer platform mounting component 54 is described.

[0084] Figure 8 This is a side view of the buffer platform mounting components.

[0085] like Figure 2 as well as Figure 8 As shown, the buffer platform mounting component 54 is disposed below the lifting mechanism body 71. The buffer platform mounting component 54 has a pair of buffer platform connecting parts 86A and 86B and a buffer platform fixing part 87.

[0086] The connecting parts 86A and 86B of the pair of buffer platforms are formed into rectangular plates. The connecting part 86A is fixed to the front of the pair of longitudinal frames 41A and 41B by bolts. The connecting part 86B is fixed to the back of the pair of longitudinal frames 41A and 41B by bolts. The connecting parts 86A and 86B of the pair of buffer platforms also serve as a pair of lower frames connecting the lower part of the pair of longitudinal frames 41A and 41B.

[0087] like Figure 8 As shown, a pair of buffer platform connecting parts 86A and 86B are positioned opposite each other in the thickness direction of the frame 31. The pair of buffer platform connecting parts 86A and 86B are connected by bolts 84 and nuts 85. Furthermore, the pair of buffer platform connecting parts 86A and 86B hold multiple third counterweights 32C among the multiple counterweights 32.

[0088] Multiple third counterweights 32C are disposed between a pair of buffer platform connecting portions 86A and 86B. Each third counterweight 32C has a bolt through hole for a bolt 84 to pass through. That is, the multiple third counterweights 32C are mounted to the pair of buffer platform connecting portions 86A and 86B using bolts 84 and nuts 85.

[0089] The buffer platform fixing part 87 is a component that is bent into a roughly C-shape. The buffer platform fixing part 87 has longitudinal frame fixing plates 871A and 871B and a lifting mechanism fixing plate 872 that is roughly perpendicular to the longitudinal frame fixing plates 871A and 871B.

[0090] like Figure 8 As shown, the longitudinal frame fixing plate 871A is fixed to the buffer platform connecting part 86A by bolts. The longitudinal frame fixing plate 871B is fixed to the buffer platform connecting part 86B by bolts. The buffer platform 35 is fixed to the lifting mechanism fixing plate 872 by bolts.

[0091] 2. Summary

[0092] Thus, the counterweight 130 of this embodiment includes: a frame 31, which is guided and moved by a guide rail 131 disposed in the lifting channel 100; a plurality of first counterweight plates 32A disposed within the frame 31; braking mechanisms 51A and 51B; a lifting mechanism 52; and a lifting mechanism mounting member 53. The braking mechanisms 51A and 51B are connected to the frame and have braking elements 62A and 62B, which stop the movement of the frame 31 by being lifted to clamp the guide rail 131. The lifting mechanism 52 lifts the braking elements 62A and 62B. The lifting mechanism mounting member 53 mounts the lifting mechanism 52 to the frame 31 and holds the second counterweight plates 32B.

[0093] Therefore, even with braking mechanisms 51A and 51B and lifting mechanism 52 in place, space can be ensured in the lower part of the frame 31 for mounting the second counterweight 32B, allowing for an increase in the number of counterweights that can be mounted. Consequently, the counterweights can be formed without using heavy and expensive materials. This ensures the weight required to balance the counterweight 130.

[0094] In addition, the balance counterweight 130 of the above embodiment includes: a buffer platform 35, which contacts a buffer device provided at the bottom of the lifting channel 100; and a buffer platform mounting component 54, which fixes the buffer platform 35 to the frame 31 and holds the third counterweight 32C.

[0095] This ensures sufficient space in the lower part of the frame 31 to accommodate the third counterweight 32C, allowing for an increase in the number of counterweights that can be loaded. As a result, even without using heavy and expensive materials to form the counterweights, the required weight to balance the counterweight 130 can be ensured.

[0096] Furthermore, the lifting mechanism 52 of the above embodiment includes a lifting mechanism body 71 fixed to the lifting mechanism mounting member 53 and connecting rod members 72A and 72B located between the lifting mechanism body 71 and the brake members 62A and 62B. Additionally, the buffer platform mounting member 54 is disposed below the lifting mechanism body 71.

[0097] Therefore, it is not necessary to make the buffer platform 35 into a shape that avoids interference with the lifting mechanism body 71. As a result, the buffer platform 35 can be formed into a simple shape, thus improving the durability of the buffer platform 35.

[0098] In addition, a portion of the lifting mechanism body 71 in the above embodiment is disposed within the frame 31 below the lifting mechanism mounting component 53.

[0099] This allows for a reduction in the length of the lifting mechanism 52 protruding from the frame 31. Consequently, the counterweight 130 can be made thinner.

[0100] Furthermore, the frame 31 in the above embodiment has a pair of longitudinal frames 41A and 41B. The lifting mechanism mounting component 53 includes: longitudinal frame connecting portions 81A and 81B, which are connected to the pair of longitudinal frames 41A and 41B and hold the second counterweight 32B; and a lifting mechanism fixing portion 82, which is connected to the longitudinal frame connecting portion 81A (or the longitudinal frame connecting portion 81B) and fixes the lifting mechanism body 71.

[0101] Therefore, the lifting mechanism body 71 can be installed and disassembled relative to the lifting mechanism fixing part 82 while the longitudinal frame connecting parts 81A and 81B that hold the second counterweight 32B connected to the pair of longitudinal frames 41A and 41B. As a result, the assembly operation of the counterweight 130 can be performed efficiently.

[0102] Furthermore, the frame 31 in the above embodiment has a pair of vertical frames 41A and 41B. The buffer platform mounting component 54 includes: buffer platform connecting portions 86A and 86B, which are connected to the pair of vertical frames 41A and 41B and hold the third counterweight 32C; and a buffer platform fixing portion 87, which is connected to the buffer platform connecting portions 86A and 86B and fixes the buffer platform 35.

[0103] Therefore, the buffer platform 35 can be installed and removed relative to the buffer platform fixing part 87 while the buffer platform holding the third counterweight 32C is connected to the pair of longitudinal frames 41A and 41B via the connecting parts 86A and 86B. As a result, the assembly operation of the counterweight 130 can be performed efficiently.

[0104] In addition, the connecting parts 86A and 86B of the buffer platform in the above embodiment also serve as the lower frame connecting the lower part of the pair of vertical frames 41A and 41B.

[0105] This allows for a reduction in the number of components and an increase in the rigidity of the frame 31.

[0106] Furthermore, the elevator 1 of the above embodiment drives the car 110 and the counterweight 130, connected by the sling 170, to move in opposite directions. The counterweight 130 includes: a frame 31, which is guided and moved by a guide rail 131 provided in the lifting channel 100; a plurality of first counterweight plates 32A disposed within the frame 31; braking mechanisms 51A and 51B; a lifting mechanism 52; and a lifting mechanism mounting member 53. The braking mechanisms 51A and 51B are connected to the frame and have braking elements 62A and 62B, which stop the movement of the frame 31 by being lifted to clamp the guide rail 131. The lifting mechanism 52 lifts the braking elements 62A and 62B. The lifting mechanism mounting member 53 mounts the lifting mechanism 52 to the frame 31 and holds the second counterweight plates 32B.

[0107] Therefore, even with braking mechanisms 51A and 51B and lifting mechanism 52 in place, space can be ensured in the lower part of the frame 31 for mounting the second counterweight 32B, allowing for an increase in the number of counterweights that can be mounted. Consequently, the counterweights can be formed without using heavy and expensive materials. This ensures the weight required to balance the counterweight 130.

[0108] The present invention is not limited to the embodiments shown in the above and accompanying drawings, and various modifications can be made without departing from the spirit of the invention as described in the claims.

[0109] In the above embodiment, the lifting mechanism 52 is configured to use a torsion spring as the force-applying component 78. However, as the balancing weight of the present invention, for example, the lifting mechanism may also be configured to use a compression helical spring.

[0110] Furthermore, in the above-described embodiments, braking mechanisms 51A and 51B are configured to use disc springs as force-applying components 64. However, as the balancing weight of the present invention, it may also be configured to have a braking mechanism that applies force to the two braking components by means of a leaf spring with a U-shaped cross-section cut in the horizontal direction.

[0111] Furthermore, in the above embodiment, a structure is adopted in which the longitudinal frame connecting portions 81A and 81B of the lifting mechanism mounting component 53 hold a plurality of second counterweight plates 32B. However, as the lifting mechanism mounting component of the present invention, it is sufficient to have a structure that holds at least one second counterweight plate 32B.

[0112] Furthermore, in the above embodiment, the buffer platform connecting portions 86A and 86B, which constitute the buffer platform mounting component 54, hold a plurality of third counterweights 32C. However, as the buffer platform mounting component of the present invention, any structure that holds at least one third counterweight 32C is sufficient.

[0113] Furthermore, in the above embodiment, the lifting mechanism mounting member 53 is configured to hold a plurality of second counterweights 32B, and the buffer platform mounting member 54 is configured to hold a plurality of third counterweights 32C. However, as the balancing counterweight of the present invention, it may also be configured such that the lifting mechanism mounting member and the buffer platform mounting member hold a common counterweight.

[0114] Furthermore, the terms “parallel” and “orthogonal” are used in this specification, but they do not only refer to strict “parallel” and “orthogonal”, but can also refer to a state of “approximately parallel” and “approximately orthogonal” that includes “parallel” and “orthogonal” and is within the range where it can perform its function.

[0115] Symbol Explanation

[0116] 1: Elevator

[0117] 31: Frame

[0118] 32: Counterweight plate

[0119] 32A: First counterweight plate

[0120] 32B: Second counterweight plate

[0121] 32C: Third counterweight plate

[0122] 33: Counterweight side pulley

[0123] 34: Emergency Stop Device

[0124] 35: Buffer platform

[0125] 41A, 41B: Vertical frames

[0126] 42: Top frame

[0127] 43: Upper guide shoe

[0128] 44: Lower guide shoe

[0129] 45: Bracket

[0130] 51A, 51B: Braking mechanism

[0131] 52: Upgrading organization

[0132] 53: Lifting mechanism mounting components

[0133] 54: Buffer platform mounting components

[0134] 61: Shell

[0135] 61a: Storage Room

[0136] 62A, 62B: Braking components

[0137] 63A, 63B: Guiding components

[0138] 64: Force-applying component (disc spring)

[0139] 65: Supporting components

[0140] 66: Lifting rod

[0141] 71: Enhance the main body of the institution

[0142] 72A, 72B: Connecting rod assembly

[0143] 74: Rotation axis

[0144] 75: Shaft support section

[0145] 76, 77: Connecting parts

[0146] 78: Force-applying component (torsion spring)

[0147] 79: Stopping component

[0148] 81A, 81B: Vertical frame connecting parts

[0149] 82: Lifting mechanism fixed part

[0150] 84: Bolt

[0151] 85: Nut

[0152] 86A, 86B: Connecting parts for buffer platforms

[0153] 87: Buffer platform fixing part

[0154] 100: Lifting Channel

[0155] 111: Lifting pulley

[0156] 120: Traction machine

[0157] 130: Balance weight

[0158] 131: Guide rail

[0159] 140: First driven pulley

[0160] 150: Second driven pulley

[0161] 170: Sling

[0162] 721: Collar

[0163] 751: Top panel

[0164] 752: Bottom panel

[0165] 753: Back panel

[0166] 754, 755: Side panels

[0167] 761: Sling connection

[0168] 821: Longitudinal frame fixing plate

[0169] 822: Lifting mechanism fixing plate

[0170] 871A, 871B: Longitudinal frame fixing plate

[0171] 872: Lifting mechanism fixing plate

Claims

1. A counterweight, characterized in that, have: The frame is guided by guide rails set in the lifting channel to move; Multiple first counterweight pieces are disposed within the frame; A braking mechanism, which is connected to the frame and has a braking element that stops the movement of the frame by being lifted to clamp the guide rail; A lifting mechanism that lifts the braking element; and A lifting mechanism mounting component that mounts the lifting mechanism to the frame and holds the second counterweight.

2. The counterweight according to claim 1, characterized in that, have: A buffer platform that contacts a buffer device located at the bottom of the lifting channel; and A buffer platform mounting component that secures the buffer platform to the frame and holds the third counterweight.

3. The counterweight according to claim 2, characterized in that, The lifting mechanism has a lifting mechanism body fixed to the lifting mechanism mounting component and a connecting rod component located between the lifting mechanism body and the braking component. The buffer platform mounting component is located below the main body of the lifting mechanism.

4. The counterweight according to claim 3, characterized in that, A portion of the main body of the lifting mechanism is disposed within the frame below the lifting mechanism mounting component.

5. The counterweight according to claim 3, characterized in that, The frame has a pair of vertical frames. The lifting mechanism mounting components have: A vertical frame connecting portion, which connects to the pair of vertical frames and holds the second counterweight piece; and The lifting mechanism fixing part is connected to the longitudinal frame connecting part and fixes the lifting mechanism body.

6. The counterweight according to claim 2, characterized in that, The frame has a pair of vertical frames. The buffer platform mounting component has: A buffer platform with a connecting part, which connects to the pair of longitudinal frames and holds the third counterweight; and A buffer platform fixing part is connected to the buffer platform by a connecting part and fixes the buffer platform.

7. The counterweight according to claim 6, characterized in that, The buffer platform uses a connecting part that also serves as the lower frame connecting the lower part of the pair of vertical frames.

8. An elevator that drives a car connected by slings and a counterweight to move up and down in opposite directions, characterized in that, The balancing weight has the following characteristics: The frame is guided by guide rails to move; Multiple first counterweight pieces are disposed within the frame; A braking mechanism, which is connected to the frame and has a braking element that stops the movement of the frame by being lifted to clamp the guide rail; A lifting mechanism that lifts the braking element; and A lifting mechanism mounting component that mounts the lifting mechanism to the frame and holds the second counterweight.

Images