CN112867689B - Elevator and compensating rope support mechanism - Google Patents

Abstract

The compensating rope support mechanism includes a wedge member, a rope sleeve, and a mounting plate. An end of the compensating rope is wound around the wedge member. An insertion hole into which one end of a compensation rope wound around a wedge member is inserted is formed in the rope sleeve. The mounting plate is formed with a fitting hole into which a part of the rope sleeve is fitted.

Description

Elevator and compensation rope support mechanism

technical field

The present invention relates to an elevator with compensating ropes connected to an elevator car and a counterweight and to a compensating rope support mechanism.

Background technique

Conventionally, in an elevator, when the moving distance of the elevator car and the counterweight in the up-and-down direction becomes longer, the length of the main rope connecting the elevator car and the counterweight from the hoist to the elevator car depends on the position of the elevator car. and change. As a result, due to the weight of the main rope itself, the difference between the weight of the main rope applied to the elevator car side of the hoisting machine and the weight of the counterweight side becomes large. In order to reduce the difference between the weight of the elevator car side of the main rope and the weight of the counterweight side, a compensation rope is provided.

Ropes for elevators, such as compensating ropes, main slings, etc., are constructed by twisting strands to a core steel, so the ropes rotate in the circumferential direction when a force is applied in the tensile direction. As a technique for preventing the rotation of such a rope, for example, the technique described in Patent Document 1 has been proposed.

Patent Document 1 describes a quill rod anti-rotation mechanism including a quill rod and a through member. In addition, the penetration member has a penetration portion in which a through hole through which the sleeve rod penetrates is formed, and a rod rotation restriction portion. When the casing rod having penetrated the through hole rotates about the axis of the casing rod, the rod rotation restricting portion contacts the peripheral surface of the casing rod and restricts the casing rod from rotating beyond a predetermined angle. In addition, in Patent Document 1, it is described that the casing rod is formed so that the distance from the axis of the casing rod to the peripheral surface of the casing rod varies depending on the position in the circumferential direction.

In addition, as a method for supporting the end portion of the rope, a babbitt type and a wedge type are used. In the babbitt type, the end of the rope is fixed by preheating a rope sleeve that holds the end of the rope and allowing molten metal to flow into the rope sleeve. In this babbitt formula, the required skill is high, and the completion of the babbitt alloy varies depending on the proficiency of the operator. Therefore, in recent years, a wedge type having a lower degree of technical requirements than the babbitt type has been sought.

FIG. 5 is a perspective view showing a structure in which an end portion of a compensation rope is supported by a wedge type in a conventional example.

As shown in FIG. 5 , the conventional support mechanism 300 includes a wedge member 301 , a rope sleeve 302 , a mounting plate 303 fixed to an elevator car or a counterweight, a rod 305 , and a connecting pin 306 .

The end of the compensating rope 131 is wound around the wedge member 301 . Furthermore, the end portion of the compensation rope 131 wound around the wedge member 301 is attached to the rope sleeve 302 . In addition, the ends of the compensation rope 131 are overlapped by folding back, and are fastened and connected by the rope clamp 304 . The rope sleeve 302 is connected to the rod 305 via the connection pin 306 . Then, the rod 305 is inserted into an attachment hole provided in the attachment plate 303 from below in the vertical direction, and is fixed to the attachment plate 303 by fixing bolts 307 .

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2015-3800

SUMMARY OF THE INVENTION

The problem to be solved by the invention

However, in the conventional support mechanism shown in FIG. 5 , since a part of the rope sleeve 302 and the rod 305 protrude vertically upward from the end of the compensation rope 131, a relatively large installation space is required. Furthermore, there is a problem that the number of parts increases due to the rod and the engagement pin that connects the rod and the rope sleeve.

The present invention takes the above-mentioned problems into consideration, and an object thereof is to provide an elevator and a compensating rope supporting mechanism which can prevent the rotation of the compensating rope and realize space saving while reducing the number of parts.

solutions to problems

In order to solve the above-mentioned problems and achieve the object, an elevator includes an elevator car, a counterweight, a compensation rope, and a compensation rope support mechanism. The elevator car moves up and down in a lift passage provided in a building structure. The counterweight is connected to the elevator car via the main sling. One end of the compensation rope is connected to the elevator car, and the other end opposite to the one end is connected to the counterweight. The compensating rope support mechanism connects one end of the compensating rope to the elevator car or the other end to the counterweight.

The compensation rope support mechanism includes a wedge member, a rope sleeve, and a mounting plate. One end or the other end of the compensating rope is wound around the wedge member. An insertion hole into which one end or the other end of the compensating rope wound around the wedge member is inserted is formed in the rope sleeve. The mounting plate is formed with a fitting hole into which a part of the lower part of the vertical direction of the rope sleeve is inserted from the upper part of the vertical direction and into which a part of the rope sleeve is fitted, and is provided in the elevator car. or balance weight.

In addition, the compensation rope support mechanism described above can be applied to the compensation rope support mechanism.

Invention effect

According to the elevator and the compensating rope support mechanism of the above-mentioned structure, the rotation of the compensating rope can be prevented, and space saving can be achieved while reducing the number of parts.

Description of drawings

FIG. 1 is a schematic configuration diagram of an elevator showing an example of the first embodiment.

Fig. 2 is a perspective view showing an elevator car-side end portion of the compensation rope of the elevator according to the first embodiment.

3 is a cross-sectional view showing a compensation rope support mechanism of the first embodiment.

4 is a cross-sectional view showing a compensation rope support mechanism according to a second embodiment.

Fig. 5 is a perspective view showing an elevator car-side end portion of a compensation rope of an elevator of a conventional example.

Detailed ways

Hereinafter, embodiments of the elevator and the compensation rope support mechanism will be described with reference to FIGS. 1 to 4 . In addition, the same code|symbol is attached|subjected to the member common to each figure.

1. Example of the first embodiment

1-1. The structure of the elevator

First, with reference to FIG. 1, the structure of the elevator of 1st Embodiment (henceforth "this example") is demonstrated.

FIG. 1 is a schematic configuration diagram showing a configuration example of the elevator of this example.

As shown in FIG. 1, the elevator 1 of this example is installed in the lift passage 110 formed in the building structure. The elevator 1 includes an elevator car 120 , a main sling 130 , a counterweight 140 , and a hoisting machine 100 , which perform an ascending and descending motion in the elevator passage 110 and carry people and goods. A machine room 160 is provided at the top of the lift passage 110 . In addition, the elevator 1 includes a plurality of compensation ropes 131 , a compensation pulley 132 around which the compensation ropes 131 are wound, a compensation rope support mechanism 10 for supporting the compensation ropes 131 , and an adjustment mechanism 190 .

The hoisting machine 100 is arranged in the machine room 160, and lifts and lowers the elevator car 120 by winding the main rope 130. In addition, the deflector pulley 150 on which the main rope 130 is installed is provided in the vicinity of the hoisting machine 100 .

One end in the axial direction of the main rope 130 is connected to the upper part of the elevator car 120 , and the other end of the main rope 130 in the axial direction is connected to the upper part of the counterweight 140 . Therefore, the elevator car 120 is connected to the counterweight 140 via the main rope 130 .

When the hoisting machine 100 is driven, the elevator car 120 is moved up and down in the elevator path 110 along the car side guide rail (not shown), and the counterweight 140 is moved in the elevator path 110 along the counterweight side guide rail (not shown). Lifting action. Let the direction in which the elevator car 120 and the counterweight 140 move up and down is the vertical direction. In addition, the up-down direction is parallel to the vertical direction.

In addition, in the elevator 1, when the moving distance of the elevator car 120 and the counterweight 140 in the lifting direction becomes longer, the length of the main rope 130 from the hoisting machine 100 to the elevator car 120 changes according to the position of the elevator car 120 . As a result, due to the weight of the main rope 130 itself, the difference between the weight of the main rope 130 on the side of the elevator car 120 with respect to the hoisting machine 100 and the weight on the side of the counterweight 140 becomes large. Therefore, in the elevator 1 of this example, in order to reduce the difference between the weight of the elevator car 120 side of the main rope 130 and the weight of the counterweight 140 side, the compensation rope 131 is provided.

The compensation rope 131 is connected so that the elevator car 120 and the counterweight 140 may be connected. One end portion 131a of the compensation rope 131 is connected to a machine beam 121 provided at a lower part in the vertical direction of the elevator car 120 via a compensation rope support mechanism 10 to be described later. In addition, the other end part 131b of the compensation rope 131 on the opposite side to the one end part 131a is connected to the side surface part of the counterweight 140 via the adjustment mechanism 190 . The adjustment mechanism 190 has an elastic member such as a coil spring, and adjusts the tension of the compensation rope 131 .

In addition, the compensation rope 131 hangs downward from the elevator car 120 and the counterweight 140 toward the lower part of the lift passage 110 . In addition, the intermediate portion 131 c of the compensation rope 131 that hangs downward from the lift passage 110 is wound around the compensation pulley 132 . The compensation pulley 132 is rotatably arranged in a dimple provided below the vertical direction of the elevating passage 110 .

1-2. Compensation rope support mechanism

Next, the configuration of the compensation rope support mechanism 10 will be described with reference to FIGS. 2 and 3 .

FIG. 2 is a perspective view showing one end portion 131 a of the compensation rope 131 , and FIG. 3 is a cross-sectional view showing the compensation rope support mechanism 10 .

As shown in FIGS. 2 and 3 , the compensation rope support mechanism 10 includes a wedge member 11 , a rope sleeve 12 , a mounting plate 13 , and a rope clamp 14 .

The wedge member 11 is formed in a substantially triangular shape, and one end portion 131a of the compensation rope 131 is wound. One end portion 131 a of the compensation cord 131 is folded back by being wrapped around the wedge member 11 . Then, one end portion 131 a of the compensation rope 131 is folded and overlapped, and is fastened and connected by the rope clamp 14 .

The rope sleeve 12 is formed in a quadrangular prism shape. An insertion hole 16 which penetrates in the up-down direction is formed in the rope sleeve 12 . As shown in FIG. 3 , the insertion hole 16 is formed in a tapered shape whose opening diameter continuously decreases as it goes from the upper part to the lower part in the vertical direction of the rope sleeve 12 . Thereby, the one end portion 131 a of the compensation cord 131 inserted into the insertion hole 16 and the wedge member 11 can be prevented from coming out of the insertion hole 16 .

A fitting protrusion 17 is formed on the lower end portion of the rope sleeve 12 in the vertical direction. The fitting protrusion 17 protrudes downward in the vertical direction from the lower surface portion 12 a of the lower end portion of the rope sleeve 12 . The fitting protrusion 17 is formed in a rectangular shape. The horizontal projected area of the fitting protrusion 17 is set to be smaller than the horizontal projected area of the rope sleeve 12 .

Moreover, the through-hole 17a which penetrates in the up-down direction is formed in the fitting protrusion 17. As shown in FIG. The through hole 17 a communicates with the insertion hole 16 of the rope sleeve 12 . One end portion 131 a of the compensation rope 131 wound around the wedge member 11 is inserted into the insertion hole 16 of the rope sleeve 12 and the through hole 17 a of the fitting protrusion 17 . Thereby, the one end portion 131 a of the compensation rope 131 is held by the rope sleeve 12 and the wedge member 11 .

The rope sleeve 12 holding the one end portion 131 a of the compensation rope 131 is attached to the mounting plate 13 . As shown in FIG. 1 , the mounting plate 13 is fixed to the machine beam 121 provided at the lower part of the elevator car 120 .

As shown in FIGS. 2 and 3 , a plurality of fitting holes 18 are formed in the mounting plate 13 . The number of the fitting holes 18 corresponds to the number of the compensation cords 131 provided. The fitting hole 18 is formed by penetrating the mounting plate 13 in the up-down direction. In addition, the opening shape of the fitting hole 18 is formed in a substantially rectangular shape corresponding to the shape of the fitting protrusion 17 .

The fitting protrusion 17 which is a part of the rope sleeve 12 is inserted into the fitting hole 18 from above in the vertical direction, and the fitting protrusion 17 is fitted into the fitting hole 18 . And the lower surface part 12a of the rope sleeve 12 is in contact with the upper surface part 13a of the vertical direction of the attachment plate 13. As shown in FIG. Thereby, the one end part 131a of the compensation rope 131 can be fixed to the lower part of the elevator car 120 via the rope sleeve 12 and the attachment plate 13. In addition, since the compensation cord 131 is pulled downward in the vertical direction by a predetermined tension, the cord sleeve 12 and one end 131 a of the compensation cord 131 do not come off the mounting plate 13 .

In addition, an opening portion 19 is formed in the mounting plate 13 . The opening portion 19 is formed by notching from the side surface portion of the mounting plate 13 to the edge portion of the fitting hole 18 . One end portion 131 a of the compensation rope 131 is inserted through the opening portion 19 . Then, one end portion 131 a of the compensation cord 131 is inserted into the fitting hole 18 through the opening portion 19 from the outside of the mounting plate 13 .

It should be noted that the width of the opening in the horizontal direction of the opening portion 19 is set to be shorter than the length of the fitting protrusion 17 in the horizontal direction. Thereby, the fitting protrusion 17 fitted into the fitting hole 18 can be prevented from coming out of the opening 19 .

According to the compensation rope support mechanism 10 of this example, no other member is provided above the one end portion 131a of the compensation rope 131 in the vertical direction. Thereby, the vertical length of the compensation rope support mechanism 10 can be shortened, and the space saving of the compensation rope support mechanism 10 can be achieved. Furthermore, as in the conventional example, the one end portion 131a of the compensation rope 131 can be fixed to the mounting plate 13 without using a fixing bolt, a rod, or a connecting pin, so that the number of parts can be reduced.

In addition, in the compensation rope support mechanism 10 of this example, the fitting protrusion 17 is fitted into the fitting hole 18, and the fitting protrusion 17 and the fitting hole 18 are formed in a rectangular shape. Thereby, when the load in the tensile direction is applied to the compensation cord 131, the compensation cord 131 can be prevented from rotating.

In addition, in this example, although the example which formed the fitting protrusion 17 in the substantially rectangular shape was demonstrated, it is not limited to this. For example, the fitting protrusions 17 are formed in other various shapes such as a hexagonal column shape and an elliptical column shape. In addition, in order to prevent the rotation of the compensation cord 131, the shape of the fitting protrusion 17 is preferably a shape that is not entirely constant in length from the central axis through which the compensation cord 131 penetrates to the outer periphery, that is, a quadrangle, an ellipse, or the like from the central axis to the outer circumference. The shape of the part where the length of the outer circumference differs.

Alternatively, the fitting protrusion 17 may be formed into a columnar shape, and a protrusion for preventing rotation may be provided on the side surface thereof. In addition, the opening shape of the fitting hole 18 is appropriately formed so as to match the shape of the fitting protrusion 17 .

In addition, when the frictional force when the fitting protrusion 17 is fitted into the fitting hole 18 is larger than the torque generated when the compensation rope 131 is rotated, the shape of the fitting protrusion 17 may be formed into a columnar shape.

2. Second Embodiment Example

Next, the compensation rope support mechanism of the second embodiment will be described with reference to FIG. 4 .

4 is a cross-sectional view showing a compensation rope support mechanism according to a second embodiment.

The compensating rope support mechanism 30 of the second embodiment is different from the compensating rope supporting mechanism 10 of the first embodiment in that the rope sleeve is fitted to the mounting plate. Therefore, the same reference numerals are assigned to the same parts as those of the compensation rope support mechanism 10 of the first embodiment, and overlapping descriptions are omitted.

As shown in FIG. 4 , the compensation rope support mechanism 30 has the wedge member 11 , the rope sleeve 32 , the mounting plate 33 , and the rope clamp 14 . The rope sleeve 32 is formed in a substantially square prism shape. An insertion hole 36 opened in a tapered shape is formed in the rope sleeve 32 . One end portion 131 a of the compensation cord 131 wound around the wedge member 11 is inserted into the insertion hole 36 of the cord sleeve 32 .

A fitting hole 38 , a communication hole 41 communicating with the fitting hole 38 , and an opening (not shown) are formed in the mounting plate 33 . The fitting hole 38 is formed in the upper surface part 33a of the attachment plate 33, and is formed with a predetermined length from the upper surface part 33a toward the downward direction in the vertical direction. The lower part in the vertical direction of the rope sleeve 32 is fitted into the fitting hole 38 .

The communication hole 41 is formed continuously from the lower end portion in the vertical direction of the fitting hole 38 . The opening area of the communication hole 41 is set to be smaller than the opening area of the fitting hole 38 . Therefore, a stepped surface 42 is formed at a portion where the communication hole 41 and the fitting hole 38 are connected. The lower surface portion 32 a of the rope sleeve 32 fitted into the fitting hole 38 abuts against the stepped surface 42 . Thereby, the one end portion 131a of the compensation rope 131 can be fixed to the elevator car 120 via the rope sleeve 32 and the attachment plate 33 .

Since other structures are the same as those of the compensation rope support mechanism 10 of the first embodiment, their descriptions are omitted. Also by the compensation rope support mechanism 30 of the second embodiment, the same functions and effects as those of the compensation rope support mechanism 10 of the first embodiment described above can be obtained.

It should be noted that, according to the compensation rope support mechanism 10 of the first embodiment, by forming the fitting protrusion 17 with a smaller horizontal projected area than that of the rope sleeve 12, the fitting with the fitting protrusion 17 can be reduced. The opening area of the hole 18. As a result, according to the compensation rope support mechanism 10 of the first embodiment, compared with the compensation rope support mechanism 30 of the second embodiment, the mounting plate 13 in which the fitting holes 18 are formed can be reduced in size, and support can be realized. The overall miniaturization of the organization.

The present invention is not limited to the above-described embodiments shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims. In the above-mentioned embodiment example, the example in which the hoisting machine 100 is arrange|positioned in the machine room 160 provided in the ceiling part of the raising/lowering passage 110 was demonstrated, but it is not limited to this. As the elevator, for example, it can be applied to a so-called machine-roomless elevator which does not have a machine room in the lift passage.

In addition, in the above-described embodiment example, the one end portion 131a of the compensation rope 131 on the elevator car 120 side is supported and fixed by the compensation rope support mechanisms 10 and 30 . Then, the other end portion 131b of the compensation rope 131 on the counterweight 140 side is supported and fixed by the adjustment mechanism 190 .

However, the end portion on which the compensation rope supporting mechanisms 10 and 30 are arranged is not limited to the one end portion 131a on the side of the elevator car 120 . For example, one end 131a of the compensation rope 131 may be supported by the adjustment mechanism 190 , and the other end 131b of the compensation rope 131 may be supported by the compensation rope support mechanisms 10 and 30 . Alternatively, when a tension adjustment mechanism is provided in the compensation pulley 132 or the like, the compensation rope support mechanisms 10 and 30 may support both ends of the compensation rope 131 on the elevator car 120 side and the counterweight 140 side.

In addition, since the adjustment mechanism 190 needs a spring member etc. for adjusting the tension of the compensation rope 131, the vertical length of the adjustment mechanism 190 is longer than the vertical length of the compensation rope support mechanisms 10 and 30. In addition, the other end portion 131b of the compensation rope 131 is connected to the side surface portion of the counterweight 140 . Therefore, it is preferable that the adjustment mechanism 190 is provided in the other end part 131b of the compensation rope 131 which has a space in the up-down direction.

On the other hand, one end portion 131a of the compensation rope 131 is connected to the lower part of the elevator car 120 . Then, the elevator car 120 moves to the lower part in the vertical direction in the vicinity of the pit in the lift passage 110 . Moreover, when the length of the lower part of the elevator car 120 becomes long, it is necessary to lengthen the length of the up-down direction of the recess in the raising/lowering passage 110.

Therefore, it is preferable that the above-mentioned compensation rope support mechanisms 10 and 30, which can realize space saving in the vertical direction compared with the adjustment mechanism 190, are provided at the one end portion 131a on the side of the elevator car 120, so that by the compensation rope support mechanisms 10 and 30, It can prevent that the length in the vertical direction of the recess in the raising/lowering passage 110 becomes long.

It should be noted that, in this specification, terms such as "parallel" and "orthogonal" are used, but these terms do not only mean "parallel" and "orthogonal" in the strict sense, but may also include "parallel" and "orthogonal". "Orthogonal" may be in a state of "substantially parallel" or "substantially orthogonal" within the range in which the function can be exhibited.

Description of reference numbers:

1 Elevator, 10, 30 Compensating rope support mechanism, 11 Wedge member, 12, 32 Rope sleeve, 12a, 32a lower surface, 13, 33 Mounting plate, 14 Rope holder, 16, 36 Insertion hole, 17 Fitting protrusion, 17a through hole, 18, 38 fitting hole, 19 opening, 41 communicating hole, 42 step surface, 100 winch, 110 lift passage, 120 elevator car, 121 machine beam, 130 main sling, 131 compensation rope, One end of 131a, the other end of 131b, the middle of 131c, 132 compensation pulley, 140 counterweight, 160 machine room, 190 adjustment mechanism.

Claims (4)

1. An elevator, wherein, The elevator has: An elevator car, which moves up and down in a lift passage provided in a building structure; a counterweight connected to the elevator car via a main sling; a compensating rope, one end of which is connected to the elevator car, and the other end of which is opposite to the one end is connected to the counterweight; and a compensating rope support mechanism that connects the one end of the compensating rope to the elevator car or the other end to the counterweight, The compensation rope support mechanism has: a wedge member to which the one end or the other end of the compensating rope is coiled; a rope sleeve formed with an insertion hole into which the one end or the other end of the compensation rope wrapped around the wedge member is inserted; and A mounting plate formed with a fitting hole into which a part of the lower part of the vertical direction of the rope sleeve is inserted from above in the vertical direction and into which a part of the rope sleeve is fitted; The mounting plate is arranged on the elevator car or the counterweight, The compensating rope supporting mechanism is provided at the one end part connected to the elevator car among the two end parts of the compensating rope, An end portion of the rope sleeve is provided with a fitting projection formed in a rectangular shape to be fitted into the fitting hole, The fitting protrusion is formed so that its horizontal projected area is smaller than the horizontal projected area of the rope sleeve, The insertion hole is formed in a tapered shape whose opening diameter continuously decreases as it goes from the upper part to the lower part in the vertical direction, The mounting plate is formed with an opening which opens from the side surface of the mounting plate to the edge of the fitting hole and through which the compensation cord passes, The width of the opening in the horizontal direction of the opening is set to be shorter than the length of the fitting protrusion in the horizontal direction. 2. The elevator according to claim 1, wherein, A portion of the rope sleeve to be fitted into the fitting hole is formed in a shape having a portion having different lengths from the central axis through which the compensation rope passes to the outer periphery. 3. The elevator of claim 1, wherein, A through hole communicating with the insertion hole is formed in the fitting protrusion. 4. A compensating rope supporting mechanism, which connects one end or the other end of a compensating rope provided in an elevator with an elevator car or a counterweight, wherein, The compensation rope support mechanism has: A wedge member to which one end or the other end of a compensating rope provided in an elevator is wound; a rope sleeve formed with an insertion hole into which the one end or the other end of the compensation rope wrapped around the wedge member is inserted; and a mounting plate formed with a fitting hole into which a part of a lower portion of the rope sleeve in the vertical direction is inserted from above in the vertical direction and into which a part of the rope sleeve is fitted, The compensating rope supporting mechanism is provided at the one end part connected to the elevator car among the two end parts of the compensating rope, An end portion of the rope sleeve is provided with a fitting projection formed in a rectangular shape to be fitted into the fitting hole, The fitting protrusion is formed so that the horizontal projected area is smaller than the horizontal projected area of the rope sleeve, The insertion hole is formed in a tapered shape whose opening diameter continuously decreases as it goes from the upper part to the lower part in the vertical direction, The mounting plate is formed with an opening which opens from the side surface of the mounting plate to the edge of the fitting hole and through which the compensation cord passes, The width of the opening in the horizontal direction of the opening is set to be shorter than the length of the fitting protrusion in the horizontal direction.

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