JP2012006696A - Governor tensioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a governor tensioner configured so that a fallen object is hardly caught between a tensioner sheave and a governor rope.SOLUTION: The governor tensioner includes: a mounting member having one end fixed to a guide rail for an elevator; the tensioner sheave rotatably supported on the mounting member, around which the governor rope for a governor which detects an abnormal speed of an elevator and operates an emergency stop device is wound; a tension weight suspended from the other end of the attachment member to tense the governor rope; a protection cover supported to be rockable concentrically with the tensioner sheave, located above the tensioner sheave, and disposed to cover a rope groove which extends substantially semi-circularly; and a weight suspended from a lower end portion of the protection cover to place a vertical load on the protection cover.

Description

  Embodiments described herein relate generally to an elevator governor.

  The elevator governor is a governor that detects an abnormal speed of the elevator and activates an emergency stop device. In the governor tensioner for applying tension to the governor rope, the tensioner weight is attached to the tip of the arm, and the arm is tilted by the weight of the tensioner weight with respect to the elongation of the governor rope, and the tension of the governor rope is adjusted.

  As an example of detecting an abnormal state of the governor rope such as catching, cutting, or coming off from the sheave of the governor rope, for example, a governor rope state detection device that detects the vertical movement of the governor tensioner has been proposed (see, for example, Patent Document 1). .) This includes a detection switch mounting bracket whose one end is fixed to the guide rail side, a detection switch mounted on the other end of the detection switch mounting bracket, a governor tensioner having a tensioner sheave and a tensioner weight around which a governor rope is wound. It has.

JP 2009-7098 A

  In the elevator governor tensioner, if something falls in the elevator hoistway due to an impact during an earthquake, etc., and there is no tensioner sheave cover, it will fall between the tensioner sheave groove and the governor rope. There was a risk of getting caught.

  Therefore, in recent years, with the strengthening of countermeasures against earthquakes, earthquake resistance design and construction guidelines have been issued, and it is necessary to attach a cover to the tensioner sheave so that falling objects do not enter between the groove of the tensioner sheave and the governor rope. Yes.

  The present invention provides a governor tensioner in which falling objects are difficult to enter.

  According to the governor tensioner of the embodiment, a mounting member whose one end is fixed to the guide rail of the elevator, and a speed governor that is rotatably supported by the mounting member, detects an abnormal speed of the elevator, and operates the emergency stop device. A tensioner sheave around which the governor rope is wound, a tension weight that is suspended at the other end of the attachment member and applies tension to the governor rope, and is supported so as to be swingable coaxially with the tensioner sheave. A protective cover that is located above and covers a rope groove extending over a substantially semicircle, and a weight that is suspended at the lower end of the protective cover and applies a load in the vertical direction to the protective cover. Prepare.

It is a front view of the governor tensioner concerning a 1st embodiment. It is a top view of the governor tensioner concerning a 1st embodiment. It is a XX arrow line view of FIG. It is a figure which shows a mode when a Ude inclines by extension of a governor rope. It is a figure which shows a mode when a protective cover inclines from a horizontal state in the case of an earthquake etc. In the governor tensioner which concerns on 2nd Embodiment, it is a perspective view which shows a mode when a cap is attached to the notch part formed in the protective cover. It is a perspective view which shows a mode when the buffer block is attached to the notch part in the governor tensioner which concerns on 3rd Embodiment. It is a figure which shows a mode when a protective cover inclines and contacts a governor rope. In the governor tensioner which concerns on 4th Embodiment, it is a perspective view which shows a mode when a rotary body is attached to the upper part of a protective cover. It is a front view of the governor tensioner concerning a 5th embodiment. It is a top view of the governor tensioner concerning a 5th embodiment. It is a XX arrow line view of FIG. It is the figure which showed the mode when the Ude inclined by the extension of the governor rope.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected about the same location and the overlapping description is abbreviate | omitted.

(First Embodiment)
The governor tensioner according to the first embodiment will be described. FIG. 1 is a front view showing the configuration of the governor tensioner according to the first embodiment. FIG. 2 is a top view of the governor tensioner according to the first embodiment viewed from the YY plane. FIG. 3 is a view taken along the line XX of FIG.

  As shown in FIG. 1, the governor tensioner has one end of the Ude 1 attached to a base 6 fixed to a rail 7 by a rail clip 8. A tensioner sheave 3 around which a governor rope 9 is wound is attached in the middle of the Ude 1. Further, a tension weight 2 for applying tension to the governor rope 9 is attached to the other end of the Ude 1. The upper part of the tensioner sheave 3 is covered with a protective cover 4 a that covers a rope groove extending over a substantially semicircle of the tensioner sheave 3. Since the rope groove is covered with the protective cover 4a, dust or the like falling from above in the hoistway is less likely to adhere to and accumulate on the rope groove.

  As shown in FIG. 2, in order to avoid contact between the shaft for attaching the tensioner sheave 3 to the Ude 1 and the pin 11 for attaching the cover 4 a, the bracket 10 is attached to the Ude 1, and the cover 4 a is attached to the bracket 10 of the tensioner sheave 3. The pin 10 is attached to the bracket 10 so as to be coaxial with the rotation axis.

  A weight 5 for applying a load so that the protective cover 4a always faces the vertical direction is attached to the lower end of the protective cover 4a.

  Next, the operation of the governor tensioner configured as described above will be described. Usually, as shown in FIG. 1, the Ude 1 is attached so as to be substantially horizontal. However, when an extension or abnormal speed of the governor rope 9 is detected, one side of the governor rope 9 is lifted upward, and the Ude 1 tilts around the attachment portion with the base 6.

  FIG. 4 is a diagram showing a state when the Ude 1 is inclined due to the extension of the governor rope 9. As shown in FIG. 4, since the weight 5 attached to the lower side of the protective cover 4a is oriented in the vertical direction when the Ude 1 is tilted, the protective cover 4a rotates coaxially with the tensioner sheave 3 and always maintains a horizontal state. The positional relationship between the tensioner sheave 3 and the tensioner sheave 3 does not change. Therefore, the positional relationship between the protective cover 4a and the governor rope 9 does not change, and the governor rope 9 does not enter deeply into the cutout portion of the protective cover 4a due to the inclination of the Ude 1.

  According to this embodiment, even if the governor rope is stretched or an abnormal speed is detected, the positional relationship between the protective cover and the tensioner sheave is not changed, and the notch can be minimized, so that the gap between the tensioner sheave and the governor rope is Falling objects are hard to get caught.

(Second Embodiment)
Next, a second embodiment will be described. The basic configuration of the governor tensioner according to the second embodiment is the same as that of the first embodiment described above. FIG. 6 is a perspective view showing a state when the cap 12 is attached to the notch 4ab formed in the protective cover 4a. A cap 12 is attached to the end surface of the cutout 4ab of the protective cover 4a where the governor rope 9 is located. The cap 12 is preferably made of resin or rubber and having elasticity.

  The operation of the second embodiment configured as described above will be described. FIG. 5 is a diagram showing a state when the protective cover 4a is tilted from the horizontal state in the event of an earthquake or the like.

  If the weight 5 suspended downward due to an earthquake or the like swings like a pendulum, the protective cover 4a may tilt as shown in FIG. 5 and come into contact with the governor rope 9. However, as shown in FIG. 6, since the cap 12 is attached to the notch 4ab, the protective cover 4a and the governor rope 9 are not in direct contact, and damage to the protective cover 4a can be avoided.

  According to this embodiment, even if the governor rope 9 contacts the protective cover 4a, damage to the protective cover 4a itself can be avoided. Accordingly, it is possible to suppress falling objects and the like from being sandwiched between the tensioner sheave and the governor rope.

(Third embodiment)
Next, a third embodiment will be described. The basic configuration of the governor tensioner according to the third embodiment is the same as that of the first embodiment. FIG. 7 is a perspective view showing a state where the buffer block 13 is attached to the notch 4ab formed in the protective cover 4a according to the third embodiment.

  The buffer block 13 has substantially the same U shape as the notch 4ab, and is slidably attached to a groove (not shown) formed in the notch 4ab. The U-shaped bottom of the buffer block 13 is supported by a stopper member 15 via a compression coil spring 14 as shown in FIG. Both end portions of the compression coil spring 14 are respectively attached to the buffer block 13 and the stopper member 15 so as not to come off. The buffer block 13 is preferably made of, for example, aluminum which is softer than the governor rope 9.

  The operation of the third embodiment configured as described above will be described. FIG. 5 is a diagram showing a state when the protective cover 4a is tilted from the horizontal state in the event of an earthquake or the like.

  When the weight 5 suspended downward due to an earthquake or the like swings like a pendulum, the protective cover 4a tilts as shown in FIG. 5, and the governor rope 9 moves in the vertical direction at the same speed as the car moves. Therefore, there is a possibility that the protective cover 4a is damaged when it comes into contact with the governor rope 9. FIG. 8 is a diagram illustrating a state where the protective cover 4 a is inclined and contacts the governor rope 9. As shown in FIG. 8, the shock received by the buffer block 13 from the governor rope 9 slides in the direction in which the buffer block 13 compresses the compression coil spring 14. Then, the compression coil spring 14 compresses and absorbs the impact, and the governor rope 9 does not directly contact the protective cover 4a.

  According to the present embodiment, since the shock received from the governor rope 9 is absorbed by the coil spring 14 so that the protective cover 4a is not brought into direct contact with the governor rope 9, the protective cover 4a itself can be prevented from being damaged. Accordingly, it is possible to suppress falling objects and the like from being sandwiched between the tensioner sheave and the governor rope.

(Fourth embodiment)
Next, a fourth embodiment will be described. The basic configuration of the governor tensioner according to the fourth embodiment is the same as that of the first embodiment. FIG. 9 is a perspective view showing a state when the rotating body 16 is attached to the upper part of the protective cover 4a according to the fourth embodiment. As shown in FIG. 9, the rotating body 16 pivotally supported by the block 17 arrange | positioned at both ends is arrange | positioned in the bottom part vicinity of the U-shaped notch 4ab of the protective cover 4a. The rotating body 16 is parallel to the opening end of the notch 4ab and crosses the governor rope 9 substantially perpendicularly.

  The operation of the fourth embodiment configured as described above will be described. FIG. 5 is a diagram showing a state when the protective cover 4a is tilted from the horizontal state in the event of an earthquake or the like.

  When the weight 5 suspended downward due to an earthquake or the like swings like a pendulum, the protective cover 4a tilts as shown in FIG. 5, and the governor rope 9 moves in the vertical direction at the same speed as the car moves. Therefore, there is a possibility that the compression cover 4a is damaged when it comes into contact with the governor rope 9.

  However, the rotating body 16 disposed in the vicinity of the bottom of the U-shaped cutout 4ab of the protective cover 4a receives an impact due to contact with the governor rope 9, and the rotating body is moved in accordance with the vertical movement of the governor rope 9. 16 rotates. Thereby, since the governor rope 9 moving in the vertical direction and the protective cover 4a do not directly rub against each other, it is possible to prevent deformation of the protective cover 4a.

  According to this embodiment, since the protective cover 4a is not rubbed even if the governor rope moves in the vertical direction, the protective cover 4a itself can be prevented from being damaged. Accordingly, it is possible to suppress falling objects and the like from being sandwiched between the tensioner sheave and the governor rope.

(Fifth embodiment)
Next, a fifth embodiment will be described. FIG. 10 is a front view of a governor tensioner according to the fifth embodiment. FIG. 11 is a top view of the governor tensioner according to the fifth embodiment viewed from the YY plane. FIG. 12 shows an XX arrow view in FIG.

  As shown in FIG. 10, the governor tensioner has one end of the Ude 1 attached to a base 6 fixed to a rail 7 by a rail clip 8. A tensioner sheave 3 around which a governor rope 9 is wound is attached in the middle of the Ude 1. Further, a tension weight 2 for applying tension to the governor rope 9 is attached to the other end of the Ude 1. A second base 20 is attached to the rail 7 above the base 6. The second base 20 is attached with a Ude 18 extending substantially parallel to the Ude 1. A plate 19 is attached from the Ude 18 toward the rotation shaft of the tensioner sheave 3. Further, a protective cover 4b, which is positioned above the tensioner sheave 3 and covers the vicinity of the rope groove extending over a substantially semicircle of the tensioner sheave at a bent portion having a substantially L-shaped cross section, is attached to the plate 19 horizontally. The protective cover 4b has U-shaped cutout portions through which the governor rope passing through the rope groove is inserted at both ends, and a resin or rubber cap is attached to the end surface of the cutout portion. Is preferred.

  Since the rope groove of the tensioner sheave 3 is covered with the protective cover 4b, dust or the like falling from above in the hoistway is less likely to adhere to and accumulate on the rope groove.

  The operation of the fifth embodiment configured as described above will be described. As shown in FIG. 10, normally, the Ude 1 is attached so that it may become substantially horizontal. However, when the governor rope 9 is extended or an abnormal speed is detected, the governor rope 9 is pulled up. Accordingly, the Ude 1 is inclined from the horizontal state around the attachment portion with the base 6.

  FIG. 13 is a view showing a state in which the Ude 1 is inclined due to the extension of the governor rope.

  In order to maintain the tension of the governor rope with the extension of the governor rope, the Ude 1 tilts around the attachment portion with the base 6 as shown in FIG. In addition, since the Ude 18 is connected by the plate 19, the Ude 18 is inclined similarly to the Ude 1. The orientation of the plate 19 is always in the vertical direction, and the positional relationship between the attached protective cover 4b and the tensioner sheave 3 does not change regardless of the inclination of the udder 1. Therefore, the positional relationship between the protective cover 4b and the governor rope 9 does not change, and the governor rope 9 does not enter the notch depth due to the inclination of the Ude 1, so that it is not necessary to deepen the notch of the protective cover 4b.

  According to this embodiment, the positional relationship between the protective cover 4b and the tensioner sheave 3 does not change, and the governor rope 9 does not enter the notch portion deeply, so that it is not necessary to deepen the notch portion of the protective cover 4b. As a result, the fallen object is not easily caught between the tensioner sheave 3 and the governor rope 9.

  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 ... Ude 2 ... Weight for tension 3 ... Tensioner sheave 4a, 4b ... Protective cover 5 ... Weight 6 ... Base 7 ... Rail 8 ... Rail clip 9 Governor rope 10 ... Bracket 11 ... Pin 12 ... Cap 13 ... Buffer block 14 ... Compression coil spring 15 ... Stopper member 16 ... Rotating body 17 ... Block 18 ...・ Ude 19 ... Plate 20 ... Second base

Claims (10)

A mounting member having one end fixed to the guide rail of the elevator,
A tensioner sheave around which a governor rope for a governor that is rotatably supported by the mounting member, detects an abnormal speed of the elevator, and operates an emergency stop device is wound;
A tension weight suspended from the other end of the attachment member and applying tension to the governor rope;
A protective cover that is supported so as to be swingable coaxially with the tensioner sheave, is located above the tensioner sheave, and is disposed so as to cover a rope groove over a substantially semicircle;
A weight suspended from the lower end of the protective cover, and applying a load in the vertical direction to the protective cover,
A governor tensioner that maintains the positional relationship between the tensioner sheave and the protective cover at all times.   2. The governor tensioner according to claim 1, wherein a U-shaped cutout portion through which the governor rope passing through the rope groove is inserted is formed at both ends of the protective cover.   The governor tensioner according to claim 2, wherein an elastic member is attached to an end face of the notch.   The governor tensioner according to claim 3, wherein the elastic member is a cap made of resin or rubber.   A buffer member having substantially the same shape as the notch is slidably attached to the upper part of the notch, and the U-shaped bottom of the buffer member is supported by a stopper member via a compression coil spring. The governor tensioner according to claim 2.   The rotating body that is pivotally supported at both ends and that is parallel to the opening end of the notch and crosses the governor rope substantially perpendicularly is disposed near the bottom of the notch. 2. The governor tensioner according to 2. A mounting member having one end fixed to the guide rail of the elevator,
A tensioner sheave around which a governor rope for a governor that is rotatably supported by the mounting member, detects an abnormal speed of the elevator, and operates an emergency stop device is wound;
A tension weight suspended from the other end of the attachment member and applying tension to the governor rope;
A second attachment member having one end fixed to the guide rail of the elevator so as to be above the attachment member and substantially parallel to the attachment member;
A plate member that extends from the second attachment member in the direction of the rotation axis of the tensioner sheave and is attached;
A second protective cover attached to the plate member and covering the vicinity of the rope groove over a substantially semicircle of the tensioner sheave at a bent portion of a substantially L-shaped cross section;
With
A governor tensioner that maintains the positional relationship between the tensioner sheave and the second protective cover at all times.   The governor tensioner according to claim 7, wherein the second protective cover is formed with U-shaped notches into which the governor rope passing through the rope groove is inserted at both ends thereof.   The governor tensioner according to claim 8, wherein an elastic member is attached to an end face of the notch.   The governor tensioner according to claim 9, wherein the elastic member is a cap made of resin or rubber.

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