Elevator

Abstract

This elevator comprises a cabin, a counterweight positioned at end one end in the width direction, and a weight-side governor that detects the lift speed of the counterweight. A corner portion of the counterweight facing a width-direction wall of the hoistway in the width direction has a balance cutout formed therein. In addition, the weight-side governor is positioned between the balance cutout of the counterweight and the width-direction wall of the hoistway.

Description

[Technical field]

[0001] The present invention relates to an elevator. [Background technology]

[0002] In recent years, when a room is provided under the pit, it is necessary to provide an emergency stop device not only for the car but also for the counterweight. In order to activate this emergency stop device, a counterweight speed governor is provided to detect the speed of the counterweight. An elevator with such a counterweight speed governor is, for example, as described in Patent Document 1.

[0003] Patent document 1 describes an elevator in which, when viewed from directly above, at least a part of the weight governor is positioned between the first counterweight guide rail and the cage, at the same position as the first counterweight guide rail in the width direction of the counterweight. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2019 / 123583 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the technology described in Patent Document 1, the weight-side governor is disposed between the car and the counterweight. Therefore, in the technology described in Patent Document 1, it is necessary to provide a space between the car and the counterweight to install the weight-side governor, which increases the width of the elevator shaft.

[0006] In consideration of the above problems, an object of the present invention is to provide an elevator capable of preventing the size of the hoistway from being enlarged by a weight-side governor. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the object, the elevator includes a car that moves up and down in a hoistway provided in an architectural structure, a counterweight that is suspended from the car via a main rope and is located at one end in a width direction perpendicular to the front-rear direction in which the car door of the car faces the entrance and exit of the architectural structure, and a counterweight-side speed governor that detects the ascent and descent speed of the counterweight. A balance notch is formed in a corner of the counterweight that faces the width wall of the hoistway in the width direction. The counterweight-side speed governor is located between the balance notch of the counterweight and the width wall of the hoistway. Effect of the Invention

[0008] According to the elevator having the above configuration, it is possible to prevent the dimensions of the hoistway from being enlarged by the weight side governor. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing an elevator according to an embodiment of the present invention; [Diagram 2] FIG. 1 is a plan view showing an elevator according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of an elevator will be described with reference to Fig. 1 and Fig. 2. In addition, the same reference numerals are used to designate common members in each drawing.

[0011] 1. Example of embodiment First, the configuration of an elevator according to an embodiment (hereinafter, referred to as "this example") will be described with reference to FIG. FIG. 1 is a schematic diagram showing an example of the configuration of the elevator of this embodiment.

[0012] As shown in Fig. 1, this is a so-called machine room-less elevator that does not have a machine room above a hoistway formed in a building structure. Also, the example shown in Fig. 1 shows an elevator 100 of a so-called 2:1 roping system.

[0013] As shown in Figures 1 and 2, the elevator 100 has a car 5 that rises and falls in the elevator shaft 1, a hoist 4, a main rope 40, a counterweight 9 suspended from the car 5 via the main rope 40, a car side governor 6A, and a counterweight side governor 6B.

[0014] The car 5 is supported by a pair of car-side guide rails 2, 2 erected in the elevator 1 so as to be able to ascend and descend in the ascending and descending direction. As shown in FIG. 2, the car 5 is provided with a car-side door 5A. The car-side door 5A faces an entrance 21 provided at a landing where the car 5 of the building structure stops, through which people and objects can enter and exit the car. Here, the direction in which the car-side door 5A faces the entrance 21 is defined as the front-rear direction Y, and the direction perpendicular to the front-rear direction Y and perpendicular to the ascending and descending direction of the car 5 is defined as the width direction X. The side of the entrance 21 in the front-rear direction Y is defined as the front side, and the side opposite the entrance 21 in the front-rear direction Y is defined as the rear side. The surface opposite the surface of the car 5 opposite the car-side door 5A in the elevator 1 is defined as the back wall surface 1B.

[0015] The pair of car-side guide rails 2, 2 are supported by rail brackets 8 fixed to width direction wall surfaces 1A, 1A located on both sides in the width direction X of the hoistway 1.

[0016] Further, a lifting pulley 5B is provided at the bottom in the up-down direction of the car 5. The lifting pulley 5B is disposed at both ends in the width direction X at the bottom of the car 5. A main rope 40 is wound around the lifting pulley 5B.

[0017] Furthermore, the car 5 has an emergency stop device (not shown) and a connecting portion that connects to a car-side governor rope 10A that is wound around the car-side governor 6A. As a result, the lifting and lowering speed of the car 5 is detected by the car-side governor 6A via the car-side governor rope 10A. When the lifting and lowering speed of the car 5 exceeds a predetermined speed, the car-side governor 6A activates the emergency stop device. As a result, the car 5 is stopped by the emergency stop device.

[0018] 1 and 2, the hoist 4 is mounted on a machine beam 4A that is installed at the top in the vertical direction of the hoistway 1. As shown in Fig. 2, the machine beam 4A is disposed on one end side in the width direction X of the hoistway 1. The machine beam 4A is disposed between a lifting area in which the car 5 moves up and down and a width direction wall surface 1A on one end side of the hoistway 1 in the width direction.

[0019] A fixed bracket (not shown) is provided on the machine beam 4A. The fixed bracket (not shown) protrudes from the machine beam 4A toward the front side in the front-rear direction Y. A car-side governor 6A is fixed to the fixed bracket. Therefore, like the machine beam 4A, the car-side governor 6A is also disposed between the lifting area and the width-direction wall surface 1A.

[0020] The counterweight 9 has a plurality of weight members 9A and a weight-side pulley 9B. The weight-side pulley 9B is disposed at the upper end in the vertical direction of the counterweight 9. A main rope 40 is wound around the weight-side pulley 9B.

[0021] The counterweight 9 is supported so as to be movable up and down in the hoistway 1 by a pair of weight-side guide rails 3A, 3B erected in the hoistway 1. The pair of weight-side guide rails 3A, 3B are disposed on one end side of the hoistway 1 in the width direction X.

[0022] The first weight-side guide rail 3A is disposed forward of the machine beam 4A in the front-rear direction Y. The first weight-side guide rail 3A is supported by a rail bracket 8 that supports the car-side guide rail 2. The second weight-side guide rail 3B is disposed rearward of the machine beam 4A in the front-rear direction Y. The second weight-side guide rail 3B is supported by a rail bracket 8 fixed to the rear wall surface 1B of the hoistway 1. Therefore, the first weight-side guide rail 3A and the second weight-side guide rail 3B are disposed so as to sandwich the hoisting machine 4 and the machine beam 4A along the front-rear direction. Therefore, the counterweight 9 is disposed below the hoisting machine 4 in the projection plane viewed from the top-bottom direction.

[0023] Like the car 5, the counterweight 9 has an emergency stop device (not shown) and a connecting portion that connects to a weight-side governor rope 10B wound around the weight-side governor 6B. As a result, the lifting and lowering speed of the counterweight 9 is detected by the weight-side governor 6B via the weight-side governor rope 10B. When the lifting and lowering speed of the counterweight 9 exceeds a predetermined speed, the weight-side governor 6B activates the emergency stop device. As a result, the counterweight 9 is stopped by the emergency stop device.

[0024] The weight member 9A is composed of a substantially flat plate-shaped member and is supported by a frame member of the counterweight 9. An interference notch 9c is formed in the front corner in the front-rear direction Y at the other end of the weight member 9A, which is the end on the car 5 side in the width direction X. The interference notch 9c is provided to prevent the weight member 9A from interfering with other members such as the main rope 40 and the lifting pulley 5B.

[0025] Further, the weight member 9A is formed with a balance cutout 9b. The balance cutout 9b is formed at a rear corner in the front-rear direction Y at one end of the weight member 9A, which is an end opposite to the car 5 in the width direction X. That is, the cutout 9b is formed at a position symmetrical to the interference cutout 9c. The balance cutout 9b is provided to suppress an unbalanced load generated in the counterweight 9 due to the provision of the interference cutout 9c.

[0026] By providing the balance notch 9b in the weight member 9A, a space M1 is formed between the counterweight 9 and the width direction wall surface 1A of the hoistway 1. The counterweight side governor 6B is disposed in this space M1. By disposing the counterweight side governor 6B between the balance notch 9b of the counterweight 9 and the width direction wall surface 1A of the hoistway 1 in this manner, it is possible to prevent the dimension of the hoistway 1 in the width direction X from being enlarged by the counterweight side governor 6B.

[0027] Furthermore, the weight-side governor 6B is at least partially or entirely disposed between the first weight-side guide rail 3A and the second weight-side guide rail 3B. This makes it possible to prevent the dimension of the hoistway 1 in the front-rear direction Y from being enlarged by the weight-side governor 6B.

[0028] The weight-side governor 6B is fixed by a fixed bracket 16. The fixed bracket 16 is fixed to a rail bracket 8 that supports the second weight-side guide rail 3B. The fixed bracket 16 protrudes from the rail bracket 8 toward one end in the width direction X, i.e., toward the width direction wall surface 1A.

[0029] In this embodiment, the weight-side governor 6B is fixed to the fixed bracket 16, but the present invention is not limited to this, and the weight-side governor 6B may be installed on the machine beam 4A. Also, the fixed bracket 16 may be fixed to the machine beam 4A.

[0030] The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention described in the claims.

[0031] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but may also mean a "substantially parallel" or "substantially orthogonal" state that includes "parallel" and "orthogonal" and is within a range in which the respective functions can be exerted. [Explanation of symbols]

[0032]

[0033] 1...hoistway, 1A...width direction wall, 1B...rear wall, 2...car side guide rail, 3A...first weight side guide rail, 3B...second weight side guide rail, 4...hoist, 4A...machine beam, 5A...car side door, 5B...lifting pulley, 6A...car side speed governor, 6B...weight side speed governor, 8...rail bracket, 9A...weight member, 9B...weight side pulley, 9b...balance notch, 9c...interference notch, 10A...car side governor rope, 10B...weight side governor rope, 16...fixing bracket, 21...entrance, 40...main rope, 100...elevator, M1...space

Claims

1. A car that moves up and down within a hoistway provided in a building structure; A counterweight is suspended from the car via a main rope and is disposed on one end side of the car in a width direction perpendicular to a front-rear direction in which a car door of the car faces an entrance of an architectural structure; and a weight-side governor that detects the lifting and lowering speed of the counterweight. In the width direction of the counterweight, an interference notch is formed at a corner portion facing the car to avoid interference with other members, In an elevator, a balance notch is formed at a corner portion of the counterweight that faces a width direction wall surface of the elevator shaft in the width direction in order to suppress an unbalanced load of the counterweight due to the interference notch, The weight-side governor is disposed between the balance notch of the counterweight and the width direction wall surface of the elevator shaft. Elevator.

2. The balance notch is formed on a rear end side of the counterweight in the front-rear direction.

2. The elevator according to claim 1.

3. A pair of weight-side guide rails are provided to support the counterweight so that the counterweight can be raised and lowered. At least a portion of the weight-side governor is disposed between the pair of weight-side guide rails in the front-rear direction.

2. The elevator according to claim 1.

4. The weight-side governor is supported by a fixed bracket fixed to the weight-side guide rail.

4. The elevator according to claim 3.

5. A hoist around which the main rope is wound is provided and which is arranged at one end side of the hoistway in the width direction, The counterweight is disposed below the hoist in the vertical direction.

2. The elevator according to claim 1.

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