JP6608509B1 - Tail cord hanging position adjusting device and installation method of tail cord hanging position adjusting device - Google Patents

Abstract

A tail cord suspension position adjusting device capable of suppressing deterioration of the riding comfort of a passenger car due to a change in the suspension position of the tail cord in the passenger car. A tail cord hanging position adjusting device according to an embodiment includes a balance weight and a moving mechanism. The balance weight is provided in a car that moves in a vertical direction in a hoistway provided in the building. The moving mechanism is provided in the car, and is capable of moving in the horizontal direction one end portion supported by the car in the tail cord suspended from the car and the balance weight. The balance weight is moved in a restraining direction that suppresses a change in the balance of the load applied to the car. [Selection] Figure 2

Description

  Embodiments described herein relate generally to a tail cord hanging position adjusting device and a method for installing a tail cord hanging position adjusting device.

  Conventionally, an elevator having a tail cord suspended from a passenger car is known. For example, the diameter of the folded portion of the tail cord changes due to a change in temperature. In order to prevent the tail cord from coming into contact with other objects due to such a change in diameter, a technique for adjusting the suspension position of the tail cord in the car has been proposed.

JP-A-7-53158 Japanese Utility Model Publication No. 2-149675

  However, if the suspension position of the tail cord in the car is changed, the weight balance applied to the car is lost, which causes a deterioration in the riding comfort of the car.

  Accordingly, one of the problems of the present invention is that a tail cord suspension position adjusting device and a tail cord suspension position adjusting device capable of suppressing deterioration in the riding comfort of the passenger car due to a change in the suspension position of the tail cord in the passenger car. Is to get the installation method.

  The tail cord suspension position adjusting device of the embodiment includes a balance weight and a moving mechanism. The balance weight is provided in a car that moves in a vertical direction in a hoistway provided in a building. The moving mechanism is provided in the car and is capable of moving in a horizontal direction one end portion supported by the car in a tail cord suspended from the car, and the balance weight, and The balance weight is moved in a restraining direction that suppresses a change in the balance of the load applied to the car due to the movement of the one end.

Drawing 1 is a figure showing the example of composition of the elevator of an embodiment. FIG. 2 is a schematic diagram schematically showing a portion including the tail cord and the tail cord suspension position adjusting device in the elevator according to the embodiment. FIG. 3 is a bottom view of a portion including the tail cord and the tail cord suspension position adjusting device in the elevator according to the embodiment. FIG. 4 is a front view of a portion including the tail cord suspension position adjusting device in the elevator according to the embodiment. FIG. 5 is a perspective view of the tail cord suspension position adjusting device of the embodiment. FIG. 6 is a bottom view of a portion including the tail cord suspension position adjusting device in the elevator according to the embodiment. FIG. 7 is a bottom view of a portion including a tail cord suspension position adjusting device in an elevator according to a modification of the embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. In the present specification, the ordinal numbers are given for convenience in order to distinguish members (parts), parts, and the like, and do not indicate priority or order.

  Drawing 1 is a figure showing the example of composition of elevator 1 of an embodiment.

  The elevator 1 according to the present embodiment shown in FIG. 1 is installed in a hoistway R of a building 100 and includes various buttons of an operation device in a car 2 and call buttons of a call device provided at a landing on each floor. Passengers etc. are transported to the desired floor of the building based on call registration by operation. Of course, the hoistway R is provided over a plurality of floors of the building and extends linearly along the vertical direction. The building 100 is also referred to as a building.

  The elevator 1 includes a car 2, a counter weight 4, a main rope 6, a drive mechanism 7, a compensator 8, a relay box 11, a tail cord 18, and a control device 20.

  The car 2 is accommodated in the hoistway R so as to be movable in the vertical direction. Specifically, the car 2 is supported by a guide rail (not shown) installed in the hoistway R so as to be movable in the vertical direction. The car 2 accommodates passengers. In the car 2, various buttons of an operation device for performing various operations of the elevator 1 are provided. Further, a tail cord suspension position adjusting device 30 (FIG. 2) is provided at the lower portion of the car 2.

  The counterweight 4 is accommodated in the hoistway R so as to be movable in the vertical direction. Specifically, the counterweight 4 is supported by a guide rail (not shown) installed in the hoistway R so as to be movable in the vertical direction.

  As for the main rope 6, the upper end part of the cage | basket | car 2 is being fixed to one end part, and the upper end part of the counterweight 4 is being fixed to the other end part. The main rope 6 is stretched over the drive sheave 12 and the deflecting sheave 13 of the drive mechanism 7 so that the car 2 and the counterweight 4 are moved up and down in the opposite directions. That is, the elevator 1 is a so-called elevator type elevator. Thus, the main rope 6 moves up and down the car 2 and the counterweight 4 in a sliding manner by being moved by the hoisting machine.

  The drive mechanism 7 is, for example, a device provided in the hoistway R, and includes a well-known hoisting machine (not shown), a driving sheave 12 attached to the output shaft of the hoisting machine, and a deflecting sheave 13. Yes. The hoisting machine is mounted in the hoistway R. The drive sheave 12 and the deflecting sheave 13 are hung on the upper side at a portion located between the counterweight 4 of the main rope 6 and the car 2. In the drive mechanism 7, the hoisting machine rotates the drive sheave 12 to move the main rope 6 in the hoistway R, and raises and lowers the car 2 and the counterweight 4. Moreover, the hoisting machine of the drive mechanism 7 is provided with a brake that restricts movement of the main rope 6 (that is, does not move the main rope 6).

  The compensator 8 includes a compen- sion rope 16 having one end attached to the lower end of the car 2 and the other end attached to the lower end of the counterweight 4, and a compensatory 17 hung on the compen- sion rope 16. ing. The compensator 8 suppresses vibrations of the car 2 and the counterweight 4 that are being lifted and cancels the weight of the main rope 6 when the car 2 and the counterweight 4 are lifted and lowered in the hoistway R.

  FIG. 2 is a schematic diagram schematically illustrating a portion including the tail cord 18 and the tail cord suspension position adjusting device 30 in the elevator 1 according to the embodiment.

  As shown in FIGS. 1 and 2, the tail cord 18 is accommodated in the hoistway R. The tail cord 18 is included in a connection path that is interposed between the car 2 and the control device 20 and electrically connects the car 2 and the control device 20. The tail cord 18 includes a power line for supplying power to the electric system in the car 2, a control line for transmitting and receiving control signals between the car 2 and the control device 20, and a suspension wire rope. Etc. are configured.

  As shown in FIG. 2, the tail cord 18 is provided across the car 2 and the relay box 11 installed in the building 100, and is suspended from the car 2 and the relay box 11. The tail cord 18 has one end 18a, the other end 18b, and a folded portion 18c. The one end 18 a is supported by the lower end of the car 2. The other end 18 b is supported by the lower end of the relay box 11. The folded portion 18c is folded in a curved shape between the one end portion 18a and the other end portion 18b, and is configured in a substantially U shape. The folded portion 18 c includes a lower end 18 i of the tail cord 18. The folded portion 18c includes a first curved portion 18g and a second curved portion 18h. The first curved portion 18g is a portion on the one end portion 18a side in the folded portion 18c. In other words, the first bending portion 18g is a portion closer to the one end portion 18a than the lower end 18i of the folded portion 18c. The second curved portion 18h is a portion on the other end 18b side in the folded portion 18c. That is, the second bending portion 18h is a portion on the other end 18b side with respect to the lower end 18i of the folded portion 18c. The tail cord 18 includes a first extending portion 18e and a second extending portion 18f. The first extending portion 18e is a portion suspended from the car 2 in the tail cord 18, and is a portion above the folded portion 18c. The second extending portion 18f is a portion suspended from the relay box 11 in the tail cord 18, and is a portion above the folded portion 18c. The folded portion 18c is also referred to as a curved portion. The relay box 11 is an example of a support part. The one end 18a is also referred to as a movable end.

  Here, between the first bending portion 18g and the second bending portion 18h in the folded portion 18c when the car 2 is located at the first specified position that is the specified position (specified height) in the hoistway R. The horizontal maximum distance L1 is referred to as a self-weight diameter. The first specified position is, for example, the position of an intermediate floor in the vertical direction among a plurality of floors arranged in the vertical direction. Said maximum space | interval L1 (self-weight diameter) changes with the temperature in the hoistway R, etc. The first specified position may be other than the above position.

  2 adjusts the horizontal position of the one end portion 18a of the tail cord 18. The tail cord suspension position adjusting device 30 shown in FIG. The tail cord suspension position adjusting device 30 includes a moving mechanism 40, a balance weight 35, and a sensor 21. The balance weight 35 is also referred to as a movable weight.

  FIG. 3 is a bottom view of a portion including the tail cord 18 and the tail cord hanging position adjusting device 30 in the elevator 1 according to the embodiment. FIG. 4 is a front view of a portion including the tail cord hanging position adjusting device 30 in the elevator 1 of the embodiment. FIG. 5 is a perspective view of the tail cord suspension position adjusting device 30 according to the embodiment. FIG. 6 is a bottom view of a portion including the tail cord hanging position adjusting device 30 in the elevator 1 of the embodiment.

  As shown in FIGS. 2 to 6, the moving mechanism 40 is provided in the car 2 and moves in the vertical direction integrally with the car 2. Specifically, the moving mechanism 40 is installed on a floor frame 2b provided below the floor 2a of the car 2, that is, below the floor. The moving mechanism 40 can move the one end portion 18a of the tail cord 18 and the balance weight 35 in the horizontal direction.

  As shown in FIGS. 3 to 6, the moving mechanism 40 includes a frame body 31, a tail cord suspension 33, a balance weight suspension 34, and a drive mechanism 36.

  The frame 31 is fixed to the floor frame 2b. The frame 31 has a pair of rails 31a and stoppers 31b and 31c. Each of the pair of rails 31a extends in the first direction D1. The first direction D1 is a direction along the vertical direction and is a direction from the other end 18b of the tail cord 18 toward the one end 18a. The pair of rails 31a are arranged at a distance from each other in a direction orthogonal to the first direction D1 and the vertical direction. The stopper 31b is spanned between ends of the pair of rails 31a in the second direction D2 opposite to the first direction D1, and is fixed to the pair of rails 31a. The stopper 31c is spanned between the ends of the pair of rails 31a in the first direction D1, and is fixed to the pair of rails 31a. The frame body 31 is also referred to as a guide member or a frame.

  One end 18 a of the tail cord 18 is fixed to the tail cord suspension 33, and the tail cord 18 is suspended from the tail cord suspension 33. The tail cord suspension 33 is supported by a pair of rails 31a so as to be movable in the first direction D1 and the second direction D2. That is, the pair of rails 31a guide the tail cord suspension 33 and the one end portion 18a of the tail cord 18 in the first direction D1 and the second direction D2. The tail cord suspension 33 slides on the pair of rails 31a.

  An upper end portion of the balance weight 35 is fixed to the balance weight suspension base 34, and the balance weight 35 is suspended from the balance weight suspension base 34. The balance weight suspension 34 is supported by a pair of rails 31a so as to be movable in the first direction D1 and the second direction D2. That is, the pair of rails 31a guide the balance weight suspension base 34 and the balance weight 35 in the first direction D1 and the second direction D2. The balance weight suspension base 34 is located in the first direction D1 of the tail cord suspension base 33 with a space from the tail cord suspension base 33. The balance weight suspension base 34 slides on the pair of rails 31a.

  As shown in FIG. 5, the drive mechanism 36 has a base 32, a motor 36c, and a screw shaft 36d. The base 32 is located between the tail cord suspension 33 and the balance weight 35 and is fixed to the pair of rails 31a. The motor 36 c is attached to the base 32.

  The screw shaft 36d extends along the first direction D1 and penetrates the base 32. The screw shaft 36d extends over the two stoppers 31b and 31c. The screw shaft 36d is rotatably supported by the base 32 and the stoppers 31b and 31c. The screw shaft 36d is restricted from moving in the first direction D1 and the second direction D2. The screw shaft 36d is rotated by the driving force of the motor 36c.

  The screw shaft 36d is provided with a first male screw portion 36da and a second male screw portion 36db. The first male screw portion 36da and the second male screw portion 36db are male screws opposite to each other.

  The first male screw portion 36da is provided in a portion of the screw shaft 36d on the second direction D2 side of the base 32. The first male screw portion 36da penetrates the tail cord suspension 33 in a state where it engages with the female screw portion provided on the tail cord suspension 33. The first male screw portion 36da and the tail cord suspension base 33 constitute a first ball screw 36a that converts the rotational motion of the screw shaft 36d (first male screw portion 36da) into the linear motion of the tail cord suspension base 33. .

  The second male screw portion 36db is provided in a portion of the screw shaft 36d on the first direction D1 side of the base 32. The second male screw portion 36db penetrates the balance weight suspension base 34 while being engaged with a female screw portion provided on the balance weight suspension base 34. The second male screw portion 36db and the balance weight suspension base 34 constitute a second ball screw 36b that converts the rotational motion of the screw shaft 36d (second male screw portion 36db) into the linear motion of the balance weight suspension base 34. .

  The moving mechanism 40 having the above configuration moves the tail cord suspension 33 and the balance weight suspension 34 in directions opposite to each other. Specifically, when the screw shaft 36d is rotated in the first rotation direction by the motor 36c, the tail cord suspension 33 is moved in the first direction D1 together with the one end portion 18a of the tail cord 18, and the balance weight suspension base is moved. 34 is moved together with the balance weight 35 in the second direction D2. That is, the tail cord suspension 33 and the one end portion 18a of the tail cord 18 and the balance weight suspension 34 and the balance weight 35 move in a direction approaching each other. In FIG. 2, the tail cord suspension base 33 and the balance weight suspension base 34 at the start of the operation are indicated by solid lines, and the tail cord suspension base 33 and the balance weight suspension base 34 at the end of the operation are indicated by a two-dot chain line. Has been.

  On the other hand, when the screw shaft 36d is rotated in the second rotational direction opposite to the first rotational direction by the motor 36c, the tail cord suspension 33 is moved in the second direction D2 together with the one end portion 18a of the tail cord 18, The balance weight suspension 34 is moved together with the balance weight 35 in the first direction D1. That is, the tail cord suspension 33 and the one end 18a of the tail cord 18, and the balance weight suspension 34 and the balance weight 35 move away from each other.

  As described above, when the balance weight 35 moves in the opposite direction with respect to the one end portion 18a of the tail cord 18, a change in the balance of the load applied to the car 2 due to the movement of the one end portion 18a of the tail cord 18 is suppressed. The That is, the moving mechanism 40 can move the one end portion 18a of the tail cord 18 and the balance weight 35 in the horizontal direction, and can balance the load applied to the car 2 by the movement of the one end portion 18a of the tail cord 18. The balance weight 35 is moved in the suppression direction that suppresses the change. The restraining direction for suppressing the change in the balance of the load applied to the car 2 due to the movement of the one end 18a of the tail cord 18 corrects the change in the balance of the load applied to the car 2 due to the movement of the one end 18a of the tail cord 18. It can also be referred to as a direction (correction direction). The first direction D1 and the second direction D2 are examples of the suppression direction. In the above operation, the tail cord suspension 33 and the balance weight suspension 34 are restricted from rotating around the screw shaft 36d by the pair of rails 31a.

  With the above-described operation, the center of the tail cord suspension 33 that is the suspension base of the one end portion 18a of the tail cord 18 and the other end that is the suspension base of the other end portion 18b of the tail cord 18 in the relay box 11 in the vertical line of sight. The horizontal distance Ls (FIG. 6) between the center of the section suspension base, the horizontal distance La (FIG. 6) between the center of the tail cord suspension base 33 and the center of the base 32, and the balance weight 35 The horizontal distance Lb (FIG. 6) between the center of the base 32 and the center of the base 32 changes. Here, in the present embodiment, the interval La and the interval Lb are the same as each other. Further, the first male screw portion 36da and the second male screw portion 36db are configured so that the ratio of the movement amount of the tail cord suspension base 33 and the movement amount of the balance weight suspension base 34 becomes 1: 1. Yes. In the above configuration, the weight of the balance weight 35 that can be balanced with the weight of the tail cord 18 applied to the tail cord suspension 33 may be the same as the weight of the tail cord 18 applied to the tail cord suspension 33. That is, the ratio of the weight of the tail cord 18 applied to the tail cord suspension 33 and the weight of the balance weight 35 may be 1: 1.

  The sensor 21 is provided in the hoistway R and is located near the folded portion 18 c of the tail cord 18. The sensor 21 measures the horizontal maximum distance L1 between the first bending portion 18g and the second bending portion 18h in the folded portion 18c of the tail cord 18 and measures the temperature in the hoistway R. In other words, the sensor 21 has a configuration for measuring the maximum interval L1 (interval measuring device) and a configuration for measuring the temperature in the hoistway R (temperature measuring device). Specifically, the sensor 21 measures the maximum interval L1 of the folding portion 18c and the temperature in the hoistway R when the car 2 is located at the first specified position in the hoistway R. The sensor 21 can calculate the maximum interval L1 by various known methods. The sensor 21 is an example of a measuring device and a measuring device.

  The control device 20 shown in FIG. 1 is a device provided in the hoistway R or the like, and is an arithmetic device including a RAM, a ROM, a CPU, an input / output port, and a storage device (not shown). The control device 20 is electrically connected to the car 2 via the tail cord 18 or the like. The control device 20 is electrically connected to the operating device for the car 2, the landing device for each floor, the drive mechanism 7, the drive mechanism 36 (motor 36c), the sensor 21, and the like, and controls the entire elevator 1. The control device 20 constitutes a part of the tail cord hanging position adjusting device 30.

  Moreover, the control apparatus 20 has the acquisition part 20a and the movement control part 20b as a functional structure. These functional configurations are realized as a result of the CPU of the control device 20 executing a program stored in a storage unit such as a ROM or a storage device. In the embodiment, part or all of these functional configurations may be realized by dedicated hardware (circuit).

  Next, the acquisition unit 20a and the movement control unit 20b will be described. The processes and operations performed below are performed, for example, when the car 2 is located at the first specified position in the hoistway R.

  The acquisition unit 20a acquires at least one of the horizontal maximum distance L1 (FIG. 2) between the first bending portion 18g and the second bending portion 18h in the folding portion 18c and the temperature in the hoistway R. Is obtained (received) from the sensor 21. The acquisition unit 20a may acquire only the maximum interval L1 of the folding unit 18c out of the maximum interval L1 of the folding unit 18c and the temperature in the hoistway R, or the maximum interval L1 of the folding unit 18c and the hoistway R Only the temperature in the hoistway R may be acquired, or both the maximum interval L1 of the folding portion 18c and the temperature in the hoistway R may be acquired.

  Based on the acquisition information acquired by the acquisition unit, the movement control unit 20b determines that the horizontal interval L2 (FIG. 6) between the one end 18a and the other end 18b of the tail cord 18 is the maximum interval of the folding unit 18c. The motor 36c of the moving mechanism 40 is controlled so that the one end portion 18a moves so as to be the same as L1, and the balance weight 35 moves in a restraining direction that suppresses a change in the balance of the load applied to the car 2. Thereby, the one end part 18a moves to the position (corresponding position) suitable for the maximum interval L1 of the folded part 18c. Here, the horizontal interval L2 between the one end 18a and the other end 18b of the tail cord 18 is also the horizontal interval between the first extension 18e and the second extension 18f of the tail cord 18. I can say that.

  As an example, the movement control unit 20b controls the movement mechanism 40 based on the maximum interval L1 of the folding unit 18c acquired by the acquisition unit 20a. As an example, the movement control unit 20b controls the movement mechanism 40 based on the temperature in the hoistway R acquired by the acquisition unit 20a. Further, as an example, the movement control unit 20b controls the movement mechanism 40 based on both the maximum interval L1 of the folding unit 18c acquired by the acquisition unit 20a and the temperature in the hoistway R. The target position of the movement of the one end portion 18a of the movement control unit 20b and the balance weight 35 in the control is determined in advance for each acquisition information acquired by the acquisition unit. That is, the target position includes the maximum interval L1 of the folding unit 18c acquired by the acquiring unit 20a, the temperature in the hoistway R acquired by the acquiring unit 20a, and the maximum interval L1 of the folding unit 18c acquired by the acquiring unit 20a. It is predetermined for both the temperature in the hoistway R. The target position is stored in a storage unit such as a storage device. For example, the movement control unit 20b is configured so that the one end 18a and the balance weight 35 are positioned at the target position based on a detection result of a detection sensor (not shown) that detects the positions of the one end 18a and the tail cord suspension 33. The motor 36c is controlled. For example, the movement control unit 20b controls the rotation speed (rotation angle) of the motor 36c so that the one end 18a and the balance weight 35 are positioned at the target position without using the detection sensor. Good. The target position is also referred to as an adjustment position or a position.

Next, a method for installing the tail cord suspension position adjusting device 30 will be described with reference to FIG. The weight of the compensator 8 (compensation rope 16) hanging on the car 2 is Wc, and the total weight of the moving mechanism 40 and the balance weight 35 in the tail cord suspension position adjusting device 30 is Wu. Let Lc be the distance from the center of the car 2 of the companion rope suspension 50, which is the origin of the compen- sion rope 16 in the car 2, as viewed from the vertical direction. Let Lu be the distance of the center of the moving mechanism 40 (screw shaft 36d) with respect to the center of the car as viewed from the vertical direction. At this time, the distance Lu may be as follows from the relation of the balance of moments due to the respective weights. That is,
Wu × Lu = Wc × Lc
Lu = Lc · Wc / Wu
And it is sufficient. Thereby, the balance of the weight applied to the car 2 damaged by the compensator 8 (compensation rope 16) can be corrected. The moving mechanism 40 and the balance weight 35 of the tail cord suspension position adjusting device 30 are installed at the distance Lu thus determined.

  That is, the installation method of the tail cord suspension position adjusting device 30 is such that the moment by the tail rope suspension position adjusting device 30 (the moving mechanism 40 and the balance weight 35) applied to the car 2 is at least of the moment by the compo rope 16 applied to the car 2. The installation position of the tail cord suspension position adjusting device 30 (the moving mechanism 40 and the balance weight 35) is determined at a position where a part (part or all) is canceled, and the tail cord suspension position adjusting device 30 ( The moving mechanism 40 and the balance weight 35) are installed.

  As described above, in the present embodiment, the tail cord suspension position adjusting device 30 includes the balance weight 35 and the moving mechanism 40. The balance weight 35 is provided in the car 2 that moves in the vertical direction in the hoistway R provided in the building 100. The moving mechanism 40 is provided in the car 2, and is capable of moving in the horizontal direction one end 18a supported by the car in the tail cord 18 suspended from the car 2, and the balance weight 35, and The balance weight 35 is moved in a restraining direction (first direction D1 or second direction D2) that suppresses a change in the balance of the load applied to the car 2 due to the movement of the one end portion 18a.

  According to such a configuration, the balance weight 35 moves in the suppression direction (first direction D1 or second direction D2) that suppresses the change in the balance of the load applied to the car 2 due to the movement of the one end portion 18a of the tail cord 18. Therefore, it is possible to suppress the deterioration of the riding comfort of the car 2 due to the change in the tail cord suspension position (support position) in the car 2. Moreover, according to such a structure, it is easy to keep the balance of the load applied to the car 2 constant.

  In the present embodiment, the tail cord suspension position adjusting device 30 includes an acquisition unit 20a and a movement control unit 20b. The tail cord 18 is folded in a curved shape between the one end 18a, the other end 18b supported by the relay box 11 (support) installed in the building 100, and the one end 18a and the other end 18b. The folded portion 18c is suspended from the car 2 and the relay box 11. The acquisition unit 20a has a horizontal maximum distance between the first curved portion 18g (part) on the one end 18a side in the folded portion 18c and the second curved portion 18h (part) on the other end 18b side in the folded portion 18c. At least one of L1 and the temperature in the hoistway is acquired as acquisition information. Based on the acquisition information acquired by the acquisition unit 20a, the movement control unit 20b is configured so that the horizontal interval L2 between the one end 18a and the other end 18b is the same as the maximum interval L1 of the folded portion 18c. The moving mechanism 40 is controlled so that the one end 18a moves and the balance weight 35 moves in the restraining direction.

  According to such a configuration, the one end 18a moves so that the horizontal interval L2 between the one end 18a and the other end 18b of the tail cord 18 is the same as the maximum interval L1 of the folded portion 18c. Further, since the balance weight 35 moves in the suppression direction, it is possible to suppress the tail cord 18 from coming into contact with other objects and to suppress the deterioration of the riding comfort of the car 2.

  Moreover, in this embodiment, the moving mechanism 40 moves the one end part 18a and the balance weight 35 so that the movement distance of the balance weight 35 becomes longer than the movement distance of the one end part 18a.

  According to such a configuration, the weight of the balance weight 35 can be reduced.

  Moreover, in this embodiment, the frame 31 has stoppers 31b and 31c. Here, since the movement amounts of the tail cord suspension base 33 and the balance weight suspension base 34 are set in advance, the tail cord suspension base 33 and the balance weight suspension base 34 are provided with the first male screw portion 36da and the second male screw portion 36db. It will not be moved beyond the length, i.e. beyond the specified amount. However, if the motor 36c rotates so that the movement amount of the tail cord suspension base 33 and the balance weight suspension base 34 exceeds the specified amount for some reason, the tail cord suspension base 33 and the balance weight suspension base 34 are Since they abut against the stoppers 31b and 31c and are stopped by the stoppers 31b and 31c, respectively, it is possible to suppress the movement exceeding the specified amount of the tail cord suspension base 33 and the balance weight suspension base 34.

  Further, the installation method of the tail cord suspension position adjusting apparatus of the present embodiment is such that the moment by the tail cord suspension position adjusting apparatus 30 applied to the car 2 cancels at least a part of the moment by the compen- sion rope 16 applied to the car 2. The installation position of the tail cord suspension position adjusting device 30 is determined, and the tail cord suspension position adjusting device 30 is installed at the determined installation position.

  According to such a method, since the tail cord suspension position adjusting device 30 cancels at least a part of the moment caused by the companding rope 16 applied to the cage 2 by the moment caused by the tail cord suspension position adjusting device 30 applied to the cage 2, Deterioration of the ride comfort of the car 2 can be suppressed.

  Next, a modification of the above embodiment will be described. FIG. 7 is a bottom view of a portion including the tail cord suspension position adjusting device 30 in the elevator 1 according to a modification of the embodiment.

  In this modification, the first male screw portion 36da and the second male screw portion 36db are configured so that the ratio of the movement amount of the tail cord suspension base 33 and the movement amount of the balance weight suspension base 34 is 1: 2. Has been. Further, in the vertical line of sight, the horizontal interval La between the center of the tail cord suspension 33 and the center of the base 32 and the horizontal interval Lb between the center of the balance weight 35 and the center of the base 32 are shown. Is 1: 2. Thus, the weight of the balance weight 35 that can balance the weight of the tail cord 18 applied to the tail cord suspension 33 may be ½ of the weight of the tail cord 18 applied to the tail cord suspension 33. That is, the ratio of the weight of the tail cord 18 applied to the tail cord suspension 33 and the weight of the balance weight 35 may be 2: 1.

  In the above configuration, the movement distance of the balance weight 35 is longer than the movement distance of the one end 18 a of the tail cord 18. That is, the moving mechanism 40 moves the one end portion 18a and the balance weight 35 so that the movement distance of the balance weight 35 is longer than the movement distance of the one end portion 18a. According to such a configuration, the weight of the balance weight 35 that can balance the weight of the tail cord 18 applied to the tail cord suspension 33 may be ½ of the weight of the tail cord 18 applied to the tail cord suspension 33. Therefore, the weight of the balance weight 35 can be reduced, and the material cost of the balance weight 35 can be reduced.

  In the above-described embodiment, the example in which the relay box 11 is applied as the support portion is shown, but the present invention is not limited to this. For example, the support unit may be the control device 20 (control panel). In this case, for example, there is no need to provide the relay box 11.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Car, 8 ... Compensator, 11 ... Relay box (support part), 16 ... Compen rope, 17 ... Compensation, 18 ... Tail cord, 18a ... One end part, 18b ... Other end part, 18c ... Folding part, 18g ... first bending part (part), 18h ... second bending part (part), 20a ... acquisition part, 20b ... movement control part, 30 ... tail cord hanging position adjusting device, 35 ... balance weight, 40 ... Movement mechanism, 100 ... building, R ... hoistway, D1 ... first direction (suppression direction), D2 ... second direction (suppression direction).

Claims (4)

A balance weight provided in a car that moves in a vertical direction in a hoistway provided in a building;
The tail cord provided in the car and supported by the car in the tail cord suspended from the car and the balance weight can be moved in the horizontal direction, and by the movement of the one end A moving mechanism that moves the balance weight in a restraining direction that suppresses a change in the balance of the load applied to the car;
Tail cord suspension position adjustment device with An acquisition unit;
A movement control unit;
With
The tail cord, the one end, the other end supported by a support portion installed in the building, a folded portion folded in a curved shape between the one end and the other end, And suspended from the car and the support,
The acquisition unit obtains at least one of a horizontal maximum distance between a portion on the one end side of the folded portion and a portion on the other end side of the folded portion, and a temperature in the hoistway. Acquired as acquisition information,
The movement control unit is configured so that a horizontal interval between the one end and the other end is the same as the maximum interval of the folded unit based on the acquisition information acquired by the acquisition unit. The tail cord suspension position adjusting device according to claim 1, wherein the moving mechanism is controlled so that the one end portion moves and the balance weight moves in the restraining direction.   The tail cord suspension position according to claim 1 or 2, wherein the moving mechanism moves the one end portion and the balance weight so that a moving distance of the balance weight is longer than a moving distance of the one end portion. Adjustment device. A method for installing the tail cord suspension position adjusting device according to any one of claims 1 to 3,
From the car, the compensator compen- sion rope is suspended,
Determining the installation position of the tail cord suspension position adjusting device at a position where the moment by the tail cord suspension position adjusting device applied to the car cancels at least part of the moment by the compen rope applied to the cage;
Installing the tail cord suspension position adjusting device at the determined installation position;
Installation method of tail cord hanging position adjusting device.

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