CN116216455A - Machine-room-less elevator system - Google Patents

Abstract

The invention relates to a machine-room-less elevator system, which comprises an elevator hoistway, a traction machine, a car, a counterweight and a rope pulley assembly, wherein the traction machine, the car, the counterweight and the rope pulley assembly are arranged in the elevator hoistway, the counterweight is arranged at the rear side of the car, which is away from a car door of the elevator hoistway, the rope pulley assembly comprises a traction rope, a car diverting pulley, a counterweight diverting pulley, a car guide pulley and a counterweight guide pulley, the car diverting pulley is arranged at the top of the car, the counterweight diverting pulley is arranged at the top of the counterweight, the car guide pulley is arranged above the car, and the traction wheel, the counterweight diverting pulley, the car diverting pulley and the car guide pulley of the traction machine are close to or are positioned in the same plane along the central line of the depth direction of the car. The traction rope is wound on the car diverting pulley, the car guide pulley, the counterweight guide pulley, the traction pulley of the traction machine and the counterweight diverting pulley for a small number of times, so that the structural arrangement of the whole machine is simplified, and the service life of the traction rope is prolonged.

Description

Machine-room-less elevator system

Technical Field

The invention relates to the technical field of elevators, in particular to a machine-room-less elevator system.

Background

In recent years, the development of the elevator industry has been changed from past elevators with machine room to elevators without machine room, which refers to an elevator that does not require a building to provide a closed special machine room for installing equipment such as an elevator drive machine, a control cabinet, a speed limiter, etc. In order to save space, equipment such as a control cabinet, a host machine, a speed limiter and the like which are installed in a machine room above a hoistway in the past are changed into equipment installed in the hoistway, special machine room setting is canceled, the utilization rate of building area is effectively improved, and meanwhile, the building cost is reduced. The elevator without machine room changes the suspension mode of the elevator car, greatly improves the operation comfort of the elevator without machine room, reduces the installation and maintenance operation intensity of the elevator without machine room, saves materials and reduces the height of the top layer.

However, in order to realize the rear-mounted counterweight of the existing machine-room-less motor, more guide wheels are needed to be used for installing and guiding the traction ropes, and particularly, the guide wheels are needed to be specially installed in the pit.

Disclosure of Invention

Based on this, it is necessary to provide a machine-room-less elevator system, which aims to solve the problems of the prior art that the structure is complex, and the service life and reliability of the hoisting rope are affected.

The application provides a machine-room-less elevator system, which comprises an elevator shaft, and a traction machine, a lift car, a counterweight and a rope sheave assembly which are arranged in the elevator shaft,

the elevator is characterized in that the counterweight is mounted on the rear side of the elevator car, which deviates from the elevator door, the rope wheel assembly comprises a hoisting rope, an elevator car diverting pulley, a counterweight diverting pulley, an elevator car guiding wheel and a counterweight guiding wheel, the elevator car diverting pulley is mounted on the top of the elevator car, the counterweight diverting pulley is mounted on the top of the counterweight, the elevator car guiding wheel is mounted on the upper side of the elevator car, the hoisting wheel of the elevator car, the counterweight diverting pulley, the counterweight guiding wheel, the elevator car diverting pulley and the elevator car guiding wheel are close to or located in the same plane along the central line of the elevator car depth direction, and the hoisting rope is wound on the elevator car diverting pulley, the elevator car guiding wheel, the counterweight guiding wheel and the counterweight diverting pulley are mounted on the elevator shaft so that the elevator and the elevator can do lifting motion.

According to the elevator system without the machine room, the traction sheave, the counterweight diverting sheave, the counterweight guiding sheave, the car diverting sheave and the car guiding sheave of the traction machine are close to or located in the same plane along the central line of the depth direction of the car, so that the number of times of winding the traction rope on the car diverting sheave, the car guiding sheave, the counterweight guiding sheave, the traction sheave and the counterweight diverting sheave of the traction machine is small, the structural arrangement of the whole machine is simplified, the service life of the traction rope is prolonged, and meanwhile, the reliability of lifting motion of the traction rope driving the car and the counterweight in an elevator hoistway is improved.

The technical scheme of the application is further described below:

in one of the embodiments, the hoisting machine is mounted above the car and the counterweight.

In one embodiment, the counterweight guide wheel is mounted above the traction sheave of the traction machine.

In one embodiment, two counterweight guide wheels are provided, and the two counterweight guide wheels are arranged above the traction sheave of the traction machine at intervals along the depth direction of the car.

In one embodiment, the elevator system without machine room further comprises a fixed seat, wherein two ends of the fixed seat are respectively connected with the first counterweight guide rail and the second counterweight guide rail, or the fixed seat is installed on a hoistway wall of the elevator hoistway, and the traction machine is installed on the fixed seat;

the fixing seat is arranged on one side of the car, which is away from the car door, and is positioned above the counterweight, and the fixing seat extends along the width direction of the car.

In one embodiment, the first end of the traction rope is provided with a counterweight rope end, the counterweight rope end is arranged on one side, far away from the counterweight guide wheel, of the traction sheave of the traction machine, and the counterweight rope end is arranged on the fixing seat.

In one embodiment, the machine room-less elevator system further comprises a support beam, the car guide wheel is mounted on a side of the car diverting sheave near the counterweight, and the car guide wheel is mounted on the support beam;

the support beam extends along the width direction of the car, and two ends of the support beam are respectively connected with the first car guide rail and the second car guide rail; alternatively, the two ends of the supporting beam are respectively connected with the first well side wall and the second well side wall.

In one embodiment, the second end of the hoisting rope is provided with a car rope end, and the car rope end is arranged at one side of the car diverting pulley, which is far away from the car guide wheel;

the car rope head is arranged on the supporting beam; or the car rope head is arranged on the top wall of the elevator shaft.

In one embodiment, the elevator hoistway includes a first hoistway sidewall disposed opposite the second hoistway sidewall, a second hoistway sidewall, and a hoistway back wall connected between the first hoistway sidewall and the second hoistway sidewall;

the elevator system without the machine room further comprises a first counterweight guide rail and a second counterweight guide rail, wherein the first counterweight guide rail and the second counterweight guide rail are arranged on one side of the car, which is away from the car door, and are arranged on the rear wall of the hoistway at intervals; or, the first counterweight guide rail is arranged on the first hoistway side wall, the second counterweight guide rail is arranged on the second hoistway side wall, and two sides of the counterweight are respectively in sliding fit with the first counterweight guide rail and the second counterweight guide rail.

In one embodiment, the elevator hoistway includes a first hoistway sidewall disposed opposite the second hoistway sidewall, a second hoistway sidewall, and a hoistway back wall connected between the first hoistway sidewall and the second hoistway sidewall;

the elevator system without the machine room further comprises a first elevator car guide rail and a second elevator car guide rail, wherein the first elevator car guide rail is arranged on the side wall of the first hoistway, the second elevator car guide rail is arranged on the side wall of the second hoistway, and two sides of the elevator car are respectively in sliding fit with the first elevator car guide rail and the second elevator car guide rail.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a machine-roomless elevator system according to an embodiment of the present application;

fig. 2 is a top view of the structure of fig. 1.

Reference numerals illustrate:

10. an elevator hoistway; 20. a traction machine; 21. traction sheave; 30. a car; 40. a counterweight; 50. a sheave assembly; 51. a hoisting rope; 511. counterweight rope ends; 512. car rope ends; 52. a car diverting pulley; 53. counterweight diverting pulley; 54. car guide wheels; 55. counterweight guide wheels; 60. a fixing seat; 70. and a support beam.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1 and 2, a machine room-less elevator system is illustrated in an embodiment of the present application, including an elevator hoistway 10, and a hoisting machine 20, a car 30, a counterweight 40, and a sheave assembly 50 mounted within the elevator hoistway 10. The traction machine 20 is connected with the rope pulley assembly 50, and outputs power for the movement of the rope pulley assembly 50, so that the rope pulley assembly 50 can drive the lift car 30 and the counterweight 40 to move up and down in the lift well 10 in a balanced manner.

Specifically, the counterweight 40 is mounted at the rear side of the car 30 facing away from the car door, so as to avoid the influence of the counterweight 40 on the normal boarding and disembarking of the elevator.

The sheave assembly 50 includes a traction rope 51, a car diverting pulley 52, a counterweight diverting pulley 53, a car guide pulley 54, and a counterweight guide pulley 55, the car diverting pulley 52 is mounted on top of the car 30, the counterweight diverting pulley 53 is mounted on top of the counterweight 40, the car guide pulley 54 is mounted above the car 30, the counterweight guide pulley 55 is mounted above the hoisting machine 20, the traction sheave 21 of the hoisting machine 20, the counterweight diverting pulley 53, the counterweight guide pulley 55, the car diverting pulley 52, and the car guide pulley 54 are located close to or in the same plane along the center line of the car 30 in the depth direction, and the traction rope 51 is wound around the car diverting pulley 52, the car guide pulley 54, the counterweight guide pulley 55, the traction sheave 21 of the hoisting machine 20, and the counterweight diverting pulley 53 to enable the hoisting movement of the car 30 and the counterweight 40 in the elevator hoistway 10.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: according to the elevator system without machine room in the above scheme, the center lines of the traction sheave 21, the counterweight diverting pulley 53, the counterweight guide pulley 55, the car diverting pulley 52 and the car guide pulley 54 of the traction machine 20 along the depth direction of the car 30 are close to or located in the same plane, so that the times of winding the traction rope 51 on the car diverting pulley 52, the car guide pulley 54, the counterweight guide pulley 55, the traction sheave 21 and the counterweight diverting pulley 53 of the traction machine 20 are small, the whole structure arrangement is simplified, the service life of the traction rope 51 is prolonged, and the reliability of lifting movement of the traction rope 51 driving the car 30 and the counterweight 40 in the elevator hoistway 10 is improved.

In some embodiments, the machine 20 is mounted above the car 30 and the counterweight 40. The traction machine 20 drives the traction sheave 21 to rotate, and a sufficient friction force is formed between the traction sheave 21 and the traction ropes 51, so that the traction sheave 21 can form upward traction force or downward release force on the car 30 and the counterweight 40, and the car 30 and the counterweight 40 can be driven to stably lift and run.

Further, a counterweight guide wheel 55 is mounted above the traction sheave 21 of the hoisting machine 20. The counterweight guide wheels 55 can better guide the movement of the traction ropes 51, so that the guide movement of the counterweight 40 is realized, and the counterweight guide wheels 55 are arranged above the traction sheave 21, so that the traction ropes 51 are more convenient to wind.

With continued reference to fig. 1, it is preferable that two counterweight guide wheels 55 are provided, and the two counterweight guide wheels 55 are disposed above the traction sheave 21 of the traction machine 20 at intervals along the depth direction of the car 30. After the traction rope 51 is wound and led out from the counterweight diverting pulley 53, the first counterweight guide wheel 55, the traction sheave 21 and the second counterweight guide wheel 55 are wound and led out in sequence, so that the traction driving force is optimized, and the traction capacity of the traction rope 51 on the counterweight 40 is improved. It should be noted that, in actual use, the number of the counterweight guide wheels 55 may be three, four or more, and may be flexibly selected according to actual needs.

In still other embodiments, the machineroom-less elevator system further includes a fixing base 60, both ends of the fixing base 60 are connected to the first counterweight 40 guide rail and the second counterweight 40 guide rail, respectively, or the fixing base 60 is mounted on a hoistway wall of the elevator hoistway 10, and the traction machine 20 is mounted on the fixing base 60. The fixing base 60 is installed in a simple manner.

The fixing seat 60 is installed on one side of the car 30 away from the car door and above the counterweight 40, and the fixing seat 60 extends along the width direction of the car 30. The fixing base 60 has enough installation space for loading and supporting the traction machine 20, so that the traction machine 20 is ensured to be stably installed and reliable in operation. Alternatively, the fixing base 60 may be a concrete block manufactured in situ, or may be a metal frame or a metal box installed.

In other embodiments, the first end of the hoist rope 51 is provided with a counterweight rope head 511, the counterweight rope head 511 is mounted on the side of the traction sheave 21 of the traction machine 20 remote from the counterweight guide wheel 55, and the counterweight rope head 511 is mounted on the fixing base 60. The first end of the hoisting rope 51 can thus be reliably fixed to the fixing base 60 by the counterweight rope head 511, so that the hoisting rope 51 can be wound around the counterweight diverting sheave 53 or the like while reliably carrying the weight of the counterweight 40.

With continued reference to fig. 1, in addition, in any of the above embodiments, the elevator system without machine room further includes a support beam 70, the support beam 70 extends along the width direction of the car 30, and two ends of the support beam 70 are respectively connected with the first car 30 guide rail and the second car 30 guide rail; alternatively, both ends of the support beam 70 are connected to the first hoistway sidewall and the second hoistway sidewall, respectively. The support beam 70 is installed in a simple manner. The car guide wheel 54 is mounted to a side of the car diverting pulley 52 adjacent to the counterweight 40, and the car guide wheel 54 is mounted to the support beam 70. The support beam 70 can well load the fixed car guide wheels 54 so that the car guide wheels 54 effectively load and guide the hoist ropes 51.

Alternatively, the supporting beam 70 may be a cast-in-situ concrete beam body, or may be a metal beam body such as a steel beam, which is installed, and may be flexibly selected according to actual needs.

Further, a second end of the traction rope 51 is provided with a car rope end 512, and the car rope end 512 is arranged at one side of the car diverting pulley 52 far away from the car guide wheel 54; car rope ends 512 are mounted on the support beam 70; alternatively, the car rope head 512 is mounted on the top wall of the elevator hoistway 10. Therefore, the second end of the hoisting rope 51 can be reliably fixed on the supporting beam 70 or the top wall of the hoistway, both ends of the hoisting rope 51 are reliably fixed, the hoisting rope 51 is ensured to effectively bear the weight of the counterweight 40, the car 30, the elevator passengers and the like, and the operation safety of the elevator system without machine room is improved.

Alternatively, the car rope end 512 and the counterweight rope end 511 may be mounted by any one of anchoring, screwing, etc., and may be specifically selected according to actual needs.

In addition, in accordance with any of the above embodiments, the elevator hoistway 10 includes a first hoistway sidewall, a second hoistway sidewall, and a hoistway rear wall, the first hoistway sidewall being disposed opposite the second hoistway sidewall, the hoistway rear wall being connected between the first hoistway sidewall and the second hoistway sidewall; the elevator system without machine room further comprises a first counterweight 40 guide rail and a second counterweight 40 guide rail, wherein the first counterweight 40 guide rail and the second counterweight 40 guide rail are arranged on one side of the car 30 away from the car door and are arranged on the rear wall of the hoistway at intervals; alternatively, the first counterweight 40 guide rail is mounted on the first hoistway sidewall, the second counterweight 40 guide rail is mounted on the second hoistway sidewall, and both sides of the counterweight 40 are respectively in sliding fit with the first counterweight 40 guide rail and the second counterweight 40 guide rail.

Further, the elevator hoistway 10 includes a first hoistway sidewall, a second hoistway sidewall, and a hoistway rear wall, the first hoistway sidewall being disposed opposite the second hoistway sidewall, the hoistway rear wall being connected between the first hoistway sidewall and the second hoistway sidewall; the elevator system without machine room further comprises a first elevator car 30 guide rail and a second elevator car 30 guide rail, wherein the first elevator car 30 guide rail is arranged on the side wall of the first hoistway, the second elevator car 30 guide rail is arranged on the side wall of the second hoistway, and two sides of the elevator car 30 are respectively in sliding fit with the first elevator car 30 guide rail and the second elevator car 30 guide rail.

When the elevator runs, the first counterweight 40 guide rail and the second counterweight 40 guide rail can play a role in left and right lateral limiting and longitudinal guiding on the counterweight 40 moving in a lifting manner, and similarly, the first car 30 guide rail and the second car 30 guide rail can play a role in left and right lateral limiting and longitudinal guiding on the car 30 moving in a lifting manner, so that stable running of the counterweight 40 and the car 30 is ensured, and experience and safety of passengers are improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims (10)

1. A machine-room-less elevator system, which comprises an elevator shaft, and a traction machine, a lift car, a counterweight and a rope sheave assembly which are arranged in the elevator shaft, and is characterized in that,

the elevator is characterized in that the counterweight is mounted on the rear side of the elevator car, which deviates from the elevator door, the rope wheel assembly comprises a hoisting rope, an elevator car diverting pulley, a counterweight diverting pulley, an elevator car guiding wheel and a counterweight guiding wheel, the elevator car diverting pulley is mounted on the top of the elevator car, the counterweight diverting pulley is mounted on the top of the counterweight, the elevator car guiding wheel is mounted on the upper side of the elevator car, the hoisting wheel of the elevator car, the counterweight diverting pulley, the counterweight guiding wheel, the elevator car diverting pulley and the elevator car guiding wheel are close to or located in the same plane along the central line of the elevator car depth direction, and the hoisting rope is wound on the elevator car diverting pulley, the elevator car guiding wheel, the counterweight guiding wheel and the counterweight diverting pulley are mounted on the elevator shaft so that the elevator and the elevator can do lifting motion.

2. The machineroom-less elevator system of claim 1, wherein the traction machine is mounted above the car and the counterweight.

3. The machineroom-less elevator system of claim 1, wherein the counterweight guide wheel is mounted above a traction sheave of the machine.

4. The machineroom-less elevator system according to claim 3, wherein the counterweight guide wheels are provided in two, and the two counterweight guide wheels are disposed above the traction sheave of the hoisting machine at intervals along the depth direction of the car.

5. The machineroom-less elevator system of claim 1, further comprising a fixed base, both ends of the fixed base being connected to a first counterweight guide rail and a second counterweight guide rail, respectively, or the fixed base being mounted on a hoistway wall of the elevator hoistway, the hoisting machine being mounted on the fixed base;

the fixing seat is arranged on one side of the car, which is away from the car door, and is positioned above the counterweight, and the fixing seat extends along the width direction of the car.

6. The machineroom-less elevator system of claim 5, wherein the first end of the hoist rope is provided with a counterweight rope head mounted on a side of the traction sheave of the hoisting machine away from the counterweight guide sheave, the counterweight rope head being mounted on the fixed base.

7. The machineroom-less elevator system of claim 1, further comprising a support beam, wherein the car guide wheel is mounted to a side of the car diverting sheave adjacent the counterweight, and wherein the car guide wheel is mounted to the support beam;

the support beam extends along the width direction of the car, and two ends of the support beam are respectively connected with the first car guide rail and the second car guide rail; alternatively, the two ends of the supporting beam are respectively connected with the first well side wall and the second well side wall.

8. The machineroom-less elevator system of claim 7, wherein the second end of the hoist rope is provided with a car rope head mounted to a side of the car diverting sheave remote from the car guide sheave;

the car rope head is arranged on the supporting beam; or the car rope head is arranged on the top wall of the elevator shaft.

9. The machineroom-less elevator system of claim 1, wherein the elevator hoistway comprises a first hoistway sidewall, a second hoistway sidewall, and a hoistway back wall, the first hoistway sidewall disposed opposite the second hoistway sidewall, the hoistway back wall connected between the first hoistway sidewall and the second hoistway sidewall;

the elevator system without the machine room further comprises a first counterweight guide rail and a second counterweight guide rail, wherein the first counterweight guide rail and the second counterweight guide rail are arranged on one side of the car, which is away from the car door, and are arranged on the rear wall of the hoistway at intervals; or, the first counterweight guide rail is arranged on the first hoistway side wall, the second counterweight guide rail is arranged on the second hoistway side wall, and two sides of the counterweight are respectively in sliding fit with the first counterweight guide rail and the second counterweight guide rail.

10. The machineroom-less elevator system of claim 1, wherein the elevator hoistway comprises a first hoistway sidewall, a second hoistway sidewall, and a hoistway back wall, the first hoistway sidewall disposed opposite the second hoistway sidewall, the hoistway back wall connected between the first hoistway sidewall and the second hoistway sidewall;

the elevator system without the machine room further comprises a first elevator car guide rail and a second elevator car guide rail, wherein the first elevator car guide rail is arranged on the side wall of the first hoistway, the second elevator car guide rail is arranged on the side wall of the second hoistway, and two sides of the elevator car are respectively in sliding fit with the first elevator car guide rail and the second elevator car guide rail.

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