JP2007131379A - Elevator main cable detachment preventive device, and its installation/maintenance checking method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator main cable detachment preventive device capable of checking and adjusting the space between a main cable and a main cable detachment preventive unit singly by the main cable detachment preventive device, and simplifying the installation and maintenance works. <P>SOLUTION: The elevator main cable detachment preventive device 4 comprises a rotating body 1, a groove 1a formed in a rotating circumferential surface of the rotating body 1, a main cable 2 which is engaged with the groove 1a and wound around the rotating body 1, a detachment preventive unit 6 facing the main cable 2 on the rotating circumferential surface of the rotating body 1, and a supporting device 7 for supporting the detachment preventive unit 6 in an axially rotating and fixing manner. The detachment preventive unit 6 is supported in a movable and fixing manner at the position in contact with or not in contact with the main cable 2 by the axially rotating and fixing support of the supporting device 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator main rope locking device.

Generally, in a traction type elevator hoisting machine, a sheave groove for winding the main rope around the sheave is provided, and the main rope is not attached to the sheave so that the main rope does not come off the sheave groove due to vibrations such as an earthquake. A locking device is to be provided. In addition, the distance between the main rope and the main rope locking device is determined to be equal to or less than a specified value according to the elevator seismic design and construction guidelines.
In a conventional elevator main rope locking device, a presser part extending in the width direction of the rotary peripheral surface with respect to a part of the rotary peripheral surface of the sheave, and extending from one end side of the presser part width direction. In some cases, there is a support portion that elastically supports the presser portion so as to maintain a main rope passage gap through which the main rope passes with respect to the rotating circumferential surface of the sheave. (For example, refer to Patent Document 1). The main rope is arranged so as to cross the main rope hung around the sheave and includes a main rope regulating member that regulates the movement of the main rope from the sheave groove of the sheave. Some are fixedly supported so as to be able to advance and retreat (see, for example, Patent Document 2). In addition, blocking bodies are arranged on both sides of the U-shaped portion of the main rope wound around the sheave, respectively, so that a gap is formed between the blocking body and the outer surface of the main rope. There is one that prevents the deviation of the rope from the sheave groove (for example, see Patent Document 3).

JP 2004-189441 A Japanese Patent Laid-Open No. 2001-335256 (term 3, FIG. 2 and FIG. 3) JP 2003-276972 A

  In conventional elevator main rope locking devices, the distance between the main rope locking device and the main rope is adjusted to a position that is less than the specified distance and does not contact the main rope during elevator installation and maintenance inspection. Therefore, it took time and effort to confirm and adjust the interval. In addition, it is difficult to visually determine whether the distance between the locking part and the main rope is below the specified distance, or a gap checking jig (for example, insert a gauge into the gap and check whether the gap is within the specified gap) ) Was required separately and was troublesome. Further, in the elevator main rope locking device described in Patent Document 3, the distance adjustment work between the blocking body and the main rope is performed by fixing the shaft rotation of the mounting body at a predetermined position, thereby separating the main rope and the blocking body at a predetermined distance. However, it takes time to adjust the rotation angle of the mounting body, and, as described above, it is difficult to visually determine whether the distance between the blocking body and the main rope is equal to or smaller than the specified distance. It was.

  The present invention has been made to solve the above-described problems, and at the time of elevator installation and maintenance inspection, the distance between the main rope and the locking portion and the interval adjustment work can be performed by the main rope locking device alone. An object of the present invention is to provide an elevator main rope locking device that can be performed and that can simplify installation and maintenance inspection work.

  In the elevator main rope locking device according to the present invention, the rotating body, the groove provided around the rotation of the rotating body, the main rope engaged with the groove and wound around the rotating body, and the rotating body A locking portion that faces the main rope on the rotating circumferential surface, and a support device that supports the locking portion so as to be able to rotate and fix the shaft, and the locking portion is supported by the support device that can rotate and fix the shaft. It is characterized in that it is supported so as to be movable and fixable in both contact and non-contact positions.

  Further, in the installation and maintenance inspection work of the elevator main rope locking device according to the present invention, the rotating body, the groove provided around the rotation of the rotating body, and the groove are engaged and wound around the rotating body. The main rope, a locking portion that faces the main rope on the rotating circumferential surface of the rotating body, and a support device that supports the locking portion so as to be pivotable and fixable. The locking portion rotates the shaft of the support device. In addition, in the main rope locking device for elevators, which is supported so as to be movable and fixable to both the contact and non-contact positions with the main rope by the support that can be fixed, the locking portion is brought into contact with the main rope. A step of adjusting and fixing the main rope locking device for the elevator, a step of releasing the fixing of the supporting device and rotating the locking portion to make contact with the main rope, and a step of fixing the locking device by the supporting device With .

  According to the present invention, it is possible to simplify the interval confirmation and interval adjustment work between the main rope and the locking portion.

Embodiment 1 FIG.
1 is a front view showing a sheave provided with an elevator main rope locking device according to Embodiment 1 of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is for an elevator according to Embodiment 1 of the present invention. It is a left view which shows the attachment plate of the main rope locking device.
In the figure, 1 is a rotating body made of a sheave of a traction elevator hoist, 1a is a sheave groove provided around the rotation of the sheave 1, 2 is engaged with the sheave groove 1a, and the sheave 1 It is a main rope having an elevator car and a counterweight connected to each other. Here, when the sheave 1 is rotationally driven, the elevator car and the counterweight are raised or lowered. Reference numeral 3 denotes a pair of bearing stands facing both side surfaces of the sheave 1 and pivoting both ends of the main shaft of the sheave 1.
Reference numeral 4 denotes an elevator main rope locking device provided on the bearing stand 3 and positioned above the sheave 1. 5 is a plate-like mounting portion of the main rope locking device 4 in which the lower half portion is provided on the upper portion of one side outer surface of the bearing stand 3 and the upper half portion protrudes upward from the periphery of the rotation of the bearing stand 3 and the sheave 1. , 6 is supported by the upper half of the mounting portion 5 at one end, and extends in the horizontal direction so as to cross the main rope 2 so as to face the rotation periphery of the sheave 1 with a round bar-like disengagement. It is a stop. Here, the distance between the main rope 2 and the detachment preventing portion 6 is a specified distance determined by an elevator seismic design / construction guideline or the like. These are the same as the conventional configuration.
The feature of the present invention is that it is provided at a position facing the main rope 2 of the locking part 6 indicated by 8 and a supporting device for the locking part 6 that engages the locking part 6 and the mounting part 5 indicated by 7. It is in the projected part. In other words, the support device 7 has a structure that supports the locking portion 6 so as to be rotatable and fixable while maintaining a distance from the main rope 2. It can be moved and fixed in position. Here, the projecting height of the convex portion 8 is equal to or less than the specified distance. A configuration for implementing these will be described.

  7a is provided penetrating the upper part of the mounting portion 5 in the lateral direction, and is formed as a round hole having an inner diameter smaller than the outer diameter of the cylindrical portion of the locking portion 6, and 7b projects from the center of one end face of the locking portion 6. The projecting amount of the cylindrical shaft end projection is smaller than the length of the round hole 7a (the thickness of the mounting plate 5), the outer diameter is equal to the inner diameter of the round hole 7a, and the whole is up to the middle of the round hole 7a. The stopper 6 is inserted without a gap and supports the anti-separation portion 6 so that the shaft can rotate. 7c is a fixing bolt that is inserted into the round hole 7a from the opposite side of the locking portion 6 and whose tip is engaged with a screw hole provided at the center of the tip surface of the shaft end protruding portion 7b. 6 is fixed to the drawing attachment portion 5. 9 is an attachment device for the main rope locking device that allows the main rope locking device 4 to be adjusted in the vertical direction, and is a fixing device for fixing the main rope locking device 4 in the vertical direction. A mounting bolt 9b that is inserted into the long hole 9a from the opposite direction of the bearing base 3 and that engages with a screw hole provided at the tip of the side wall of the bearing base 3 is provided. Accordingly, the main rope locking device 4 is fixed when the mounting bolt 9 is tightened, and is movable in the vertical direction when the mounting bolt 9 is loosened.

  According to the main rope locking device 4 configured in this way, the locking portion 6 can be pivoted by loosening the fixing bolt 7c. Here, it is desirable that the convex portion 8 has an R shape at the tip so that the round bar-shaped anti-locking portion 6 can be axially rotated in contact with the main rope 2.

  Next, the operation at the time of installation of the main rope locking device 4 will be described. As shown in FIG. 1, first, the main rope locking device 4 is adjusted so that the convex portion 8 comes into light contact with the main rope 2 and fixed with the mounting bolts 9b. Next, the fixing bolt 7c is loosened and the locking part 6 is pivoted to move the position of the convex part 8 from above the main rope 2, so that the locking part 6 and the main cable 2 are not in contact with each other. Next, the fixing bolt 7c is tightened and fixed.

  According to the operation of the main rope locking device 4 configured as described above, the protrusion height of the convex portion 8 is not more than a specified distance, so that the distance between the locking stopper 6 and the main rope 2 is necessarily the specified distance. This eliminates the need to confirm the distance between the locking part 5 and the main rope 2 again by visual inspection or using a jig, thereby simplifying the installation work. Moreover, if it is below the said space | interval regulation value, the main rope 2 will not remove | deviate from the sheave groove | channel 1a by vibrations, such as an earthquake.

  Further, it is considered that the sheave groove 1a is worn due to friction with the main rope 2 due to long-term use, and the main rope 2 moves in a direction away from the locking portion 6. The confirmation of whether or not the portion 6 and the main rope 2 are equal to or less than the predetermined distance is performed by rotating the locking portion 6 so that the convex portion 8 faces the main rope 2 and the gap between the convex portion 8 and the main rope 2 is It is only necessary to confirm the presence / absence, and the readjustment to be equal to or less than the specified interval can be performed by the above-described operation at the time of installation, and the maintenance and inspection work can be simplified.

Embodiment 2. FIG.
FIG. 4 is a diagram corresponding to FIG. 1 in Embodiment 2 of the present invention, and FIG. 5 is a diagram corresponding to FIG. In the first embodiment, the same components and corresponding parts are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the structure of the support device 7 of the locking part 6 of the first embodiment is changed. That is, in the figure, 7d is a portion corresponding to the round hole 7a in the first embodiment, and is a round hole engaged with one end of the round bar-shaped anti-locking portion 6. It is a notch. Reference numeral 7f denotes a fixing bolt that is inserted into a through hole vertically penetrating from the upper surface of the mounting portion 5 to the notch groove 7e and screwed into a screw hole provided downward from the notch groove 7e. Here, the stopper 6 may be configured such that one end is inserted into the round hole 7d without providing the shaft end protrusion 7b in the first embodiment. Thus, when the fixing bolt 7f is tightened, the notch groove 7e is pressed, the round hole 7d is contracted, and the detachment preventing portion 6 is fixed. Further, by loosening the fixing bolt 7f, the round hole 7d expands and the detachment preventing portion 6 can be rotated.

  According to the main rope locking device configured as described above, the same effect as that of the first embodiment can be obtained, and the locking bolt 6 can be fastened to fix the locking portion 6 which can occur in the structure of the first embodiment. At this time, it is possible to prevent a situation in which the external force in the rotation direction of the fixing bolt acts more than the fastening force of the fixing bolt and the anti-separation portion 6 rotates.

Embodiment 3 FIG.
FIG. 6 is a diagram corresponding to FIG. 1 and FIG. 7 is a diagram corresponding to FIG. In the first embodiment and the second embodiment, the same components and corresponding parts are denoted by the same reference numerals, and the description thereof is omitted.
In the present embodiment, the cross-sectional shapes of the support structure 7 and the locking part 6 of the locking part 6 of the first and second embodiments are changed. In the figure, 6a is a part corresponding to the round bar-shaped locking part 6 in the first and second embodiments, and has a square bar-like cross section and a locking part configured by providing the convex part 8 on one side of the square. It is. 7g is a portion corresponding to the round hole 7d in the second embodiment, and is a square hole corresponding to the cross section of the locking portion 6a, and 7h is provided vertically extending from the upper surface of the mounting portion 5 to the engagement hole 7g. It is a fixing bolt that is screwed into the formed screw hole and whose tip presses the upper surface of the locking portion 6a. As a result, the detachment prevention portion 6a fixing bolt 7h is fastened to be fixed to the engagement hole 7g, and can be inserted and removed by loosening.

  Next, the operation at the time of installation of the main rope locking device 4 will be described. First, the main rope locking device 4 is adjusted so that the convex portion 8 comes into light contact with the main rope 2, and is fixed with the mounting bolt 9b. Next, the fixing bolt 7h is loosened and the detachment preventing portion 6a is extracted from the engaging hole 7g. Next, the locking part 6 b is inserted into the engagement hole 7 g so that one side surface of the locking part 6 a not provided with the convex part 8 corresponds to the main rope 2. Next, the bolt 7h is tightened to fix the detachment preventing portion 6a.

  According to the main rope locking device configured in this way, the same effects as those of the first and second embodiments can be obtained, and the locking portion 6a has a square cross section, and therefore the locking portion 6a is engaged. When inserted into the joint hole 7g, the rotation is completely restricted, and the convex portion 8 can be reliably separated from the main rope 2.

  Here, only the engaging hole 7g and one end of the locking part 6b (the engaging part with the engaging hole 7g) are polygonal, and the other locking part is a round bar as in the first and second embodiments. May be formed.

Embodiment 4 FIG.
FIG. 8 is a diagram corresponding to FIG. 1 and FIG. 9 is a diagram corresponding to FIG.
In the present embodiment, the shape of the locking portion in the first to third embodiments is changed, and the convex portion 8 is not required. In the figure, reference numeral 6b denotes a part corresponding to the locking part 6 of the first embodiment, which is a locking part in which the cross section provided with the apex 8a and the surface 8b is a triangular bar and the convex part 8 is omitted. Here, the difference between the distance from the triangular vertex 8a of the locking part 6b to the axial center and the distance from the surface 8b to the axial center is equal to or less than the prescribed distance between the locking part 6b and the main rope 2. Further, the structure of the supporting device 7 for the locking portion is the same as that of the first embodiment, and the locking portion 6c can be rotated and fixed to the mounting plate 5 by engaging the shaft end protruding portion 7b and the fixing bolt 7c. It is what is supported.

  As a result, the locking portion is first fixed while the main rope 2 and the apex 8a are in contact with each other, and then the locking portion 6b is rotated to fix the locking portion 6b at a position where the surface 8b and the main rope 2 face each other. In this case, the interval is a prescribed value.

  In the third embodiment and the fourth embodiment, the cross-sectional shape of the locking portions 6a and 6b is formed as a quadrangle and a triangle, but the cross-sectional shape is formed as a shape such as another polygon or a cam, It goes without saying that the main rope 2 is not in contact with the main rope 2 when the anti-lock section is rotated from the contacted state, and the distance between the main rope 2 and the anti-lock section is not more than a specified value.

Embodiment 5. FIG.
Needless to say, the rotating body in the present invention is not limited to a sheave, but can be applied to an elevator main rope stopper for any rotating body such as a deflector or a suspended vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a sheave provided with an elevator main rope detachment device according to Embodiment 1 of the present invention. It is a side view of FIG. It is a left view which shows the attachment plate of the main rope slip prevention apparatus for elevators in Embodiment 1 of this invention. It is FIG. 1 equivalent figure in Embodiment 2 of this invention. FIG. 4 is a view corresponding to FIG. 3 in Embodiment 2 of the present invention. FIG. 10 is a view corresponding to FIG. 1 in Embodiment 3 of the present invention. It is FIG. 2 equivalent figure in Embodiment 3 of this invention. It is FIG. 1 equivalent figure in Embodiment 4 of this invention. It is FIG. 2 equivalent figure in Embodiment 4 of this invention.

Explanation of symbols

1 sheave,
1a Sheave groove,
2 main rope,
3 Bearing stand,
4 Main rope locking device,
5 Mounting part,
6, 6a, 6b Detachment part,
7 Support device for the locking part,
7a, 7d round holes,
7b Shaft end protrusion,
7c, 7f, 7h fixing bolt,
7e Notch groove,
7g engagement hole,
8 Convex,
8a vertex,
Side 8b,
9 Main rope locking device mounting device,
9a slotted hole,
9b Mounting bolt.

Claims (13)

A rotating body,
A groove provided around the rotation of the rotating body;
A main rope engaged with the groove and wound around the rotating body;
A locking part facing the main rope on the periphery of the rotating body;
A support device that supports the anti-separation part so as to be rotatable and fixable.
The main rope detachment prevention apparatus for elevators, wherein the detachment prevention part is supported so as to be movable and fixable to both the contact and non-contact positions with the main rope by the pivotable and fixable support of the support device.   The elevator according to claim 1, wherein the locking part has a convex part that contacts the main rope, and the convex part is moved by the axial rotation of the locking part to be out of contact with the main rope. Main cable locking device.   3. The elevator main rope locking device according to claim 2, wherein a shape of the top of the convex portion is an R shape that does not hinder the rotation of the locking portion.   The anti-slip portion has a polygonal cross section with a vertex and a surface, the vertex contacts the main rope, and the vertex moves by the axial rotation of the anti-lock portion so that the main rope and the surface face each other. The main rope slip-off preventing device for an elevator according to claim 1, wherein the main rope is in non-contact with the main rope.   The support device includes a mounting portion provided in the vicinity of the locking portion and an engagement hole provided in the mounting portion, and the locking device is supported so as to be axially rotatable and fixable in the engagement hole. The main rope slip-off preventing device for an elevator according to any one of claims 1 to 4.   The support device includes a mounting portion provided in the vicinity of the locking portion and an engagement hole provided in the mounting portion, and the shaft can be rotated by allowing the locking portion to be inserted into and removed from the engagement hole. The main rope slip-off preventing device for an elevator according to any one of claims 1 to 4, characterized by being supported so as to be fixed.   The main rope detachment preventing device for an elevator according to any one of claims 1 to 3, 5, or 6, wherein the detachment preventing portion is formed into a round bar shape or a bar shape having a polygonal cross section.   The main rope for an elevator according to any one of claims 1 to 7, wherein a distance between the lock-off portion and the main rope at a position where the lock-off portion is not in contact with the main rope is equal to or less than a specified distance. Retaining device.   The support device is provided at one end of the locking portion and is inserted into the engagement hole, and the fixing bolt is inserted from the opposite side of the locking hole to the locking portion and is engaged with the shaft end protrusion. The elevator main rope locking device according to any one of claims 1 to 8, wherein the locking device is supported by an operation of the fixing bolt.   The support device includes a notch groove that is cut from the side surface of the mounting portion to the engagement hole, and a fixing bolt that presses the notch groove to compress and release the engagement hole, and is disengaged by operating the fixing bolt. The main rope slip-off preventing device for an elevator according to any one of claims 1 to 8, wherein the stopping portion is supported.   The support device includes a screw hole reaching from the upper surface of the mounting portion to the engagement hole, and a fixing bolt engaged with the screw hole, and supports the detachment prevention portion by operating the fixing bolt. The elevator main rope locking device according to any one of claims 8 to 8. A rotating body, a groove provided around the rotating body of the rotating body, a main rope engaged with the groove and wound on the rotating body, and the main rope facing the rotating body around the rotating body And a support device that supports the anti-separation portion so that the anti-rotation portion can be rotated and fixed. The anti-detachment portion is in contact with and non-contact with the main rope by the support of the support device that can be rotated and fixed. In the main rope locking device for elevators, which is supported so as to be movable and fixed to the position of
Adjusting the locking portion to a position in contact with the main rope, fixing the elevator main rope locking device and temporarily fixing the locking portion to the support device;
Removing the temporary fixing of the support device and rotating the anti-slip portion to make contact with the main rope; and
Fixing the locking part by the support device;
An installation / maintenance inspection method for an elevator main rope locking device. 13. The step of removing the temporary fixing of the support device and rotating the locking part to make it non-contact with the main rope, wherein the distance between the locking part and the main cable is equal to or less than a predetermined distance. Installation / maintenance inspection method for main rope locking devices for elevators.

Images