JPH0797162A - Lift body device for elevator - Google Patents

Abstract

PURPOSE:To improve traction efficiency by eliminating necessity for a deflector wheel particularly in a large-sized elevator. CONSTITUTION:A position of hanging a suspension-wheel 7 of a balance weight 5 is placed eccentrically by a distance B relating to a width direction center of the balance weight 5, to provide balance weights 24A to 24C for canceling a couple generated by this eccentric position. Thus by decreasing a distance from a head surface of a guide rail in an eccentric side to an external peripheral surface of the suspension wheel 7, a main rope 21 hung down from a rope driving wheel of a hoist can be wound to the suspension wheel 7 in a perpendicular condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator body device for an elevator which is elevated and lowered by a main rope connected thereto.

[0002]

BACKGROUND ART As is well known, an elevator has a car and a counterweight connected to both sides of a main rope wound around a drive sheave of a hoisting machine. In the 1: 1 roping, both ends of the main rope are directly connected to the car and the counterweight, and in the 2: 1 roping, the main ropes are connected to each other via a balance wheel provided on the car and the counterweight. In either case, it is desirable for the main rope to be kept in a vertical state at all times and to be wound around the drive sheave and the suspension sheave in order to prevent the detachment.

However, especially in the case of a large-sized elevator, the balance weight is maintained by keeping the main ropes in a vertical state because of the relative relationship between the hoist installed in the machine room and the balance weight arranged in the hoistway. It may not be possible to wrap it around. In such a case, it is usual to install a deflecting wheel in the machine room and change the hanging position of the main rope so that the main rope can be wound around the counterweight in a vertical state.

FIG. 16 is a plan view of a machine room showing a conventional elevator body device for an elevator. In the figure, (1) is installed in the hoistway, (2) is installed in the hoistway (1) and the elevator is guided by the guide rails (3), and (4) is installed on top of the car (2). The balance wheel, (5) is located in the hoistway (1) and the counterweight is guided by the guide rail (6).
(7) is a balance wheel mounted on top of the counterweight (5).

(8) is a machine stand laid on the floor of the machine room, (9)
Is a hoist installed on the machine base (8), (10) is a hoist (9)
Is a drive sheave driven by the machine, (11) is a baffle wheel supported by the machine base (8), and (12) is a rope stop beam installed in the machine room. In addition, one end of the main rope (not shown) is a rope
(12) It is connected to one side (right side in the figure) and droops.
(4) Wrapped around (4), stood up, wrapped around the drive sheave (10) and the baffle (11), drooped again, and wrapped around the balance wheel (5), the suspension wheel (7). Then, the rope is raised again, and the other end is connected to the other side (left side in the figure) of the rope beam (12).

That is, because of the structure of the counterweight (5), there is a large difference between the diameter of the balance wheel (7) and the interval between the guide rails (6), so that the balance wheel (7) is removed from the head surface of the guide rail (6). Depending on the distance A to the outer peripheral surface of), the main rope hanging from the drive sheave (10) cannot be wound around the balance wheel (5) of the counterweight (5) in a vertical state. Therefore, a deflector wheel (11) is provided to displace the hanging position of the main rope.

[0007]

In the conventional elevator body device for elevators as described above, since the deflecting wheel (11) is provided to displace the hanging position of the main rope, the number of parts is increased and the deflecting device is used. The vehicle (11) has a problem that the winding angle of the main rope around the drive sheave (10) becomes small, the traction may be insufficient, and the efficiency is not good. There is also a problem that the machine base (8) must be lengthened in order to provide the deflecting wheel (11).

The present invention has been made to solve the above problems, and provides an elevator body device for an elevator that does not require a deflecting wheel, improves traction efficiency, and shortens the machine base. The purpose is to

[0009]

According to a first aspect of the present invention, there is provided an elevator body device for an elevator, wherein a main rope is eccentrically connected to a center of a counterweight in a width direction, and an eccentric side of the counterweight is attached. It is equipped with a balance weight.

Further, the elevator body device according to the second aspect of the present invention is one in which the main ropes are eccentrically connected to the center of the counterweight in the width direction and the guide shoes are arranged at asymmetrical positions.

Further, in the elevator body device for an elevator according to the third aspect of the invention, the main ropes are eccentrically connected to the center of the counterweight in the width direction, and the roller guide is provided to the side where the surface pressure of the guide shoe due to the eccentricity is high. Are used together.

Further, in the elevator body device of the elevator according to the fourth aspect of the present invention, the suspension wheel around which the main rope is wound is arranged below the counterweight.

Further, the elevator body device according to the fifth aspect of the present invention comprises a connecting member for connecting the main ropes to the counterweight so as to be displaceable in the width direction of the counterweight.

Also, in the elevator lifting device according to the sixth aspect of the present invention, a connecting member for connecting the main rope to the counterweight is mounted so as to be displaceable from the center line of the lifting member, and is connected to the connecting member in the hoistway. A cam that displaces this together is installed.

[0015]

In the first aspect of the present invention, since the main rope is eccentrically connected to the center of the counterweight in the width direction, the distance from the head surface of the guide rail to the hanging position of the main rope is reduced. This reduces the size and eliminates the need for a deflector, and does not reduce the wrap angle of the main rope around the drive sheave. Further, since the balance weight is provided, the couple generated due to the eccentricity is offset.

In the second aspect of the invention, since the main ropes are eccentrically connected to the center of the counterweight in the width direction and the guide shoes are arranged at asymmetrical positions to each other, the guide shoes of the couple due to the eccentricity are coupled. Non-uniformity of surface pressure can be adjusted.

Further, in the third aspect of the invention, the main rope is eccentrically connected to the center of the counterweight in the width direction, and the roller guide is also used on the side where the surface pressure of the guide shoe due to eccentricity is high. It is possible to adjust the non-uniformity of the surface pressure due to the couple.

Further, in the fourth aspect of the invention, since the balance wheel is arranged at the lower part of the counterweight, the main rope to the drive sheave is adjusted when the counterweight is at the bottom and at the top. The change in wrap angle is small.

Further, in the fifth aspect of the invention, since the connecting member for the main rope is mounted so as to be displaceable in the width direction of the counterweight, when the counterweight approaches the uppermost portion, the connecting member moves toward the drive sheave. Be drawn.

Further, in the sixth aspect of the invention, the connecting member for the main rope is mounted so as to be displaceable from the center line of the lifting body, and is displaced by the cam of the hoistway. When approaching, the connecting member is forcibly moved to the drive sheave side.

[0021]

【Example】

Example 1. 1 and 2 are views showing an embodiment of the first invention of the present invention, FIG. 1 is a front view of a counterweight, and FIG. 2 is a plan view of a machine room. Reference numerals are shown (the same applies to the following examples).

In the figure, (7) is a balance wheel of a counterweight (5), around which the main rope (21) is wound, and a balance plate (22).
The center of (7) is attached so as to be eccentric by a distance B from the center of the counterweight (5) in the width direction. (23A) Adjustable weights loaded on counterweight (5), (23B) adjustment weights, (24A) to (24C) counterbalance weights fixed on the eccentric side of (5), (25) Guide shoes mounted on the upper and lower sides of the counterweight (5) and engaged with the guide rails (6) to guide the lifting and lowering of the counterweight (5), and (26) is a lubricator that refuels the guide shoes (25). is there.

In the balancing weight device for an elevator constructed as described above, since the position of the balance wheel (7) is eccentric, the balance wheel (7) is moved from the head surface of the guide rail (6) on the eccentric side. The distance to the outer peripheral surface is reduced, and the outer peripheral surface of the suspension wheel (7) can be arranged vertically below the outer peripheral surface of the drive sheave (10) as shown in FIG. Therefore, the baffle wheel (1
1) is unnecessary. Also, as the deflecting car (11) is unnecessary,
Since the machine base (8) is short, the size of the machine base (8) may be small.

When the balance wheel (7) is eccentrically attached to the counterweight (5), a couple force is generated and the surface pressure of the guide shoe (25) becomes uneven. The balance weights (24A) to (24C) correct this, and minimize the difference in surface pressure so that the guide shoe (25) is not adversely affected.

Example 2. 3 and 4 show the first part of the present invention.
FIG. 3 is a view showing another embodiment of the invention of FIG. 3, FIG. 3 is a front view of a counterweight, and FIG. 4 is a transverse sectional view of FIG. This example
The adjustable weight (23A) and the adjusting weight (23B) are partially widened to have an eccentric center of gravity. With this, the same functions as the balance weights (24A) to (24C) of the first embodiment can be obtained.

Example 3. FIG. 5 is a front view of a main part of a counterweight showing another embodiment of the first invention of the present invention. In this embodiment, the first embodiment is applied to 1: 1 roping, the main rope (21) is fixed to the rope socket (28), and the rope stop plate (29) and the rope socket (28) penetrating the rope are fixed. It is connected to the counterweight via a compression coil spring (30) fitted, and is eccentric by a distance B with respect to the counterweight (5).

Example 4. FIG. 6 is a front view of a counterweight showing an embodiment of the second invention of the present invention. In this embodiment, the balance weights (24A) to (24C) shown in FIG. 1 are not provided, but the guide shoes (25) on both sides of the counterweight (5) are arranged in asymmetrical positions with respect to each other. That is, on the upper side of the counterweight (5), the guide shoe (25A) on the anti-eccentric side,
On the lower side, mount the eccentric side guide shoes (25A) respectively (33)
Are placed through. With this, the guide shoe (25A) (25
The distance between A) is C, and the distance between the guide shoes (25B) (25B) is D (C> D).

In this way, since the guide shoes (25A) (25B) on both sides of the counterweight (5) are arranged at asymmetrical positions to each other, the eccentricity of the counterweight (5) and the eccentric wheel (7) are eccentric. The reaction force of the guide shoes (25A) (25B) due to the couple can be minimized. Although not shown, it is obvious that the same applies to 1: 1 roping.

Example 5. FIG. 7 is a front view of a counterweight showing an embodiment of the third invention of the present invention. In this embodiment, a roller guide (35) is installed on the table (33) in FIG. That is, on the upper side of the counterweight (5),
The guide shoe (25A) on the anti-eccentric side and the guide shoe (25A) on the eccentric side on the lower side are installed via the roller guides (35), respectively.

In this way, the roller guide (35) is used together with the guide shoe (25A) (25B) having a high surface pressure due to the eccentric couple of the balance wheel (5) of the counterweight (5). Therefore, the guide rail (6) using the guide shoe (25A) with the higher surface pressure
It is possible to reduce the running resistance with the. Further, although not shown, the same can be applied to 1: 1 roping.

Example 6. 8 and 9 show a fourth embodiment of the present invention.
FIG. 8 is a perspective view of a counterweight, and FIG. 9 is a plan view of a main part of a machine room. In this embodiment, the balance wheel (7) is arranged on the center line in the width direction of the counterweight (5) and is attached to the lower part of the skid weight (5).

Here, as shown in FIG. 9, the outer peripheral surface of the suspension wheel (7) and the outer peripheral surface of the drive sheave (10) are displaced from each other by a dimension E. However, since the balance wheel (7) is attached to the lower part of the counterweight (5), even if the counterweight (5) moves to the top, the fleet angle (allowable rope) with the drive sheave (10) The angle) is small and can be set within the standard value. Therefore, the deflecting wheel (11) can be omitted.

Example 7. 10 and 11 are views showing an embodiment of the fifth invention of the present invention, FIG. 10 is a front view of a counterweight, and FIG. 11 is an operation explanatory view while traveling near the top floor.

In this embodiment, the cart (7) has a mounting arm (37).
The mounting arm (37) is attached to the
It is pivoted on the widthwise center line of (5). (39) is the mounting arm
A weight fixed to the lower end of (37) to give rotational force to the mounting arm (37), and (40A) and (40B) are fixed to the upper part of the counterweight (5) with stoppers arranged on both sides of the mounting arm (37). is there.

That is, normally, as shown in FIG. 10, the attaching arm (37) is pressed toward the stopper (40B) by the force of the weight (39), and the balance wheel (7) of the balance weight (5). It is located on the center line in the width direction. Therefore, the unbalanced load does not act, and the guide shoe (25) is not adversely affected. At this time, the relationship between the suspension wheel (7) and the drive sheave (10) is the same as in FIG. 9, and the two are displaced by the dimension E. However, when the counterweight (5) approaches the uppermost portion, the cart (7) is pulled toward the drive sheave (10), and the cart (7) receives the force of the weight (39) as shown in FIG. And moves to the stopper (40A) side, and the dimension E approaches zero.

As a result, the main ropes (21) between the hoisting wheel (7) and the drive sheave (10) approach the vertical state, and the winding state of each other becomes smooth. Therefore, also in the case of this embodiment, the deflecting vehicle (11)
Can be omitted. It is also applicable to 1: 1 roping, and the main part thereof is as shown in FIG. 14 described later.

Example 8. 12 and 13 are views showing an embodiment of a sixth invention of the present invention, FIG. 12 is a front view of a counterweight, and FIG. 13 is an operation explanatory view while traveling near the top floor.

In this embodiment, the balance wheel (7) is attached to the attachment arm (37) in the same manner as in FIG. 10, and the balance weight is provided by the shaft (38).
Sustained by (5). The lower end of the attachment arm (37) is connected to one end of the link (43) by a pin (42), and the roller (44) is attached to the other end of the link (43). (45) is a cam that is installed in the hoistway (1) near the top floor and that engages with the rollers (44).

The operation of this embodiment is the same as that of the seventh embodiment. In the seventh embodiment, the suspension wheel (7) is normally located at the center by the force of the weight (39), and when it approaches the top floor, it is a driving sheave. While the handwheel (7) is displaced by being pulled by (10), it is displaced by the cam (45) in the eighth embodiment. That is, normally, the cart (7) is located in the center, but when it comes near the top floor, the roller (44) engages with the cam (45) and the link (4)
The mounting arm (37) is rotated via 3) to eccentric the suspension wheel (7) by a distance B.

As a result, the dimension E shown in FIG. 9 approaches zero,
The main rope (21) can be smoothly wound without using the deflector wheel (11). In the normal state, the unbalanced load does not act as in the seventh embodiment, and the guide shoe (25) is not adversely affected.

Example 9. FIG. 14 is a front view of an essential part of a counterweight showing another embodiment of the sixth invention of the present invention.
In this embodiment, the eighth embodiment is applied to 1: 1 roping, the main rope (21) is fixed to the rope socket (28), the rope stopper plate (47) and the rope socket (28) penetrating the rope stopper plate (47). It is pivotally supported by a mounting arm (37) via a compression coil spring (30) fitted in the.

Example 10. FIG. 15 is a front view of a main part of a car showing another embodiment of the sixth invention of the present invention. This embodiment is an application of the eighth embodiment to the car side.
A mounting arm (37) for supporting the is supported by a car frame (49) by a shaft (38). (50) is a car room supported by the car frame (49), and (51) is a passenger in the car room (50).

The operation of this embodiment is exactly the same as that of the eighth embodiment. Further, as shown in FIG. 14, it is also applicable to 1: 1 roping.

[0044]

As described above, in the first aspect of the present invention, the main ropes are connected so as to be eccentric with respect to the center of the counterweight in the width direction. The distance to the fishing position is reduced, a deflector is not required, the cost can be reduced, and the wrapping angle of the main rope around the drive sheave is not reduced, so that traction efficiency can be improved. Further, since the balance weight is provided, the couple generated due to the eccentricity is canceled out, and it is possible to prevent an adverse effect on the guide shoe.

Further, in the second aspect of the invention, the main ropes are eccentrically connected to the center of the counterweight in the width direction and the guide shoes are arranged at asymmetrical positions with respect to each other. It is possible to adjust the unevenness of the surface pressure and prevent the guide shoes from being adversely affected.

In the third aspect of the present invention, in the second aspect of the present invention, since the roller guide is used in combination with the guide shoe having a higher surface pressure due to eccentricity, the guide rail having a higher surface pressure is used as the guide rail. This has the effect of reducing running resistance.

Further, in the fourth aspect of the invention, since the balance wheel is arranged at the lower part of the counterweight, the main rope to the drive sheave is adjusted when the counterweight is at the bottom and at the top. The change in the wrapping angle is small, and there is an effect that the deflecting wheel can be omitted and the cost can be reduced.

Further, in the fifth aspect of the invention, since the connecting member for the main rope is mounted so as to be displaceable in the width direction of the counterweight, when the counterweight approaches the uppermost portion, the connecting member moves toward the drive sheave. It has the effect of being able to be constructed at low cost by omitting the deflecting car.

Further, in the sixth aspect of the invention, since the connecting member for the main rope is mounted so as to be displaceable from the center line of the elevating body and is displaced by the cam of the hoistway, the elevating body approaches the uppermost portion. Then, the connecting member is forcibly moved to the drive sheave side, and there is an effect that the deflecting wheel can be omitted and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a counterweight showing a first embodiment of the present invention.

FIG. 2 is a plan view of a machine room showing Embodiment 1 of the present invention.

FIG. 3 is a front view of a counterweight showing a second embodiment of the present invention.

4 is a cross-sectional view of FIG.

FIG. 5 is a front view of a main part of a counterweight showing a third embodiment of the present invention.

FIG. 6 is a front view of a counterweight showing a fourth embodiment of the present invention.

FIG. 7 is a front view of a counterweight according to a fifth embodiment of the present invention.

FIG. 8 is a perspective view of a counterweight according to a sixth embodiment of the present invention.

FIG. 9 is a plan view of a main part of a machine room showing a sixth embodiment of the present invention.

FIG. 10 is a front view of a counterweight according to a seventh embodiment of the present invention.

FIG. 11 is an explanatory view of the operation when the counterweight shown in FIG. 10 is traveling near the top floor.

FIG. 12 is a front view of a counterweight showing an eighth embodiment of the present invention.

FIG. 13 is an explanatory diagram of an operation when the counterweight shown in FIG. 12 is traveling near the top floor.

FIG. 14 is a front view of the essential parts of a counterweight that shows Embodiment 9 of the present invention.

FIG. 15 is a front view of the essential parts of the car, showing the tenth embodiment of the present invention.

FIG. 16 is a plan view of a machine room showing an elevator body device of a conventional elevator.

[Explanation of symbols]

 1 Hoistway 2 Elevator (car) 5 Counterweight 6 Guide rail 7 Carriage 10 Drive sheave 21 Main rope 24A, 24B, 24C Balance weight 25, 25A, 25B Guide shoe 35 Roller guide 37 Connecting member (mounting arm) 43 Lever 44 Roller 45 Cam

Claims (6)

[Claims] Claim: What is claimed is: 1. A device in which a main rope, which hangs down around a drive sheave of a hoisting machine and hangs down, is connected to a counterweight, in which guide shoes guided by guide rails are mounted on both sides. An elevator body device for an elevator, characterized in that the balance weight is eccentrically connected to the center in the width direction and is provided with a balance weight on the eccentric side of the balance weight. 2. A device in which a main rope that is wound around a drive sheave of a hoist and hangs down is connected to a counterweight in which guide shoes that are guided by guide rails are mounted on both sides. An elevator body device, characterized in that the guide weights are eccentrically connected to the center of the counterweight in the width direction, and the guide shoes are arranged at asymmetrical positions. 3. A device in which a main rope that hangs around a drive sheave of a hoist and hangs down is connected to a counterweight having guide shoes that are guided by guide rails mounted on both sides. An elevator body device for an elevator, characterized in that the counterweight is eccentrically connected to the center of the counterweight in the width direction, and a roller guide is additionally used for the side where the surface pressure of the guide shoe due to the eccentricity is high. 4. In a device in which a main rope that hangs around a drive sheave of a hoist and hangs down is suspended around a balance wheel of a balance weight, the balance wheel is arranged below the balance weight. Elevator body device for elevators. 5. A device in which main ropes hanging around a drive sheave of a hoist and hanging are connected to a counterweight via a connecting member, wherein the connecting member is provided in the width direction of the counterweight. An elevator lifting device characterized by being displaceably mounted. 6. A device in which a main rope hanging around a drive sheave of a hoist and hanging is connected to an elevating body via a connecting member, wherein the connecting member is displaceable from a center line of the elevating body. An elevator lifting / lowering device which is mounted and has a cam for engaging and displacing the connecting member in the hoistway.