CN110884979A

CN110884979A - Elevator system

Info

Publication number: CN110884979A
Application number: CN201911069574.3A
Authority: CN
Inventors: 陈东; 蒙良勇; 王哲
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-03-17

Abstract

The invention relates to an elevator system which comprises a car, two first guide rails, a first reverse rope pulley group, a second reverse rope pulley group, a main machine assembly and two hoisting ropes. The two traction wheels are respectively positioned at two sides of the motor, the motor is used for driving the traction wheels to rotate, and the two traction wheels are respectively arranged corresponding to the first return rope wheel set and the second return rope wheel set. The two hoisting ropes are respectively and correspondingly arranged with the first diversion rope pulley group and the second diversion rope pulley group, and the two hoisting ropes are respectively and correspondingly wound on the two hoisting wheels. When the main machine component works, the first reverse rope wheel group and the second reverse rope wheel group are driven by the combined action of the two hoisting ropes to drive the lift car to lift, and meanwhile, the first reverse rope wheel group and the second reverse rope wheel group are respectively positioned on two sides of a plane formed by connecting lines of central lines of the two first guide rails, so that the bad phenomenon that the lift car inclines in the lifting process can be avoided, the stress effect of the guide shoes and the balance degree of the lift car are favorably improved, the running stability is good, and the comfort level is improved.

Description

Elevator system

Technical Field

The invention relates to the technical field of elevators, in particular to an elevator system.

Background

With the development of modern society, elevators are more and more important in people's daily work and life, especially indispensable in office buildings or residential houses. Conventional elevator systems typically include a set of diverting pulleys on the car around which the hoisting ropes are routed to connect the rope heads to the main machine assembly. However, as the load-carrying capacity of the elevator increases and the floor height of the elevator increases continuously, the longer the guide rail limiting the running track of the car is, and the wider the car is, the more the passengers and the accompanying objects have uneven weight distribution, the unbalanced stress of the car is caused, the friction force between the guide shoes and the guide rail is increased, and the running stability of the elevator is affected.

Disclosure of Invention

Based on this, it is necessary to overcome prior art's defect, provides an elevator system, and it can be favorable to improving and lead boots atress effect and guarantee the equilibrium degree of car, and operating stability is better.

The technical scheme is as follows: an elevator system comprising: a car; the two first guide rails are respectively arranged on two opposite side surfaces of the car, and the first guide rails are positioned in the middle of the side surfaces of the car; the first rope reversing wheel group and the second rope reversing wheel group are respectively positioned on two sides of a plane formed by connecting lines of central lines of the two first guide rails; the main machine component comprises a motor, a supporting seat and two traction wheels, the motor is arranged on the supporting seat, the supporting seat is arranged on the wall of a well, the two traction wheels are respectively positioned on two sides of the motor, the motor is used for driving the traction wheels to rotate, and the two traction wheels are respectively arranged corresponding to the first return rope pulley group and the second return rope pulley group; and the two hoisting ropes are respectively and correspondingly arranged with the first diversion rope pulley group and the second diversion rope pulley group, and are respectively and correspondingly wound on the two hoisting wheels.

In the elevator system, when the main machine component works, the two hoisting ropes jointly drive the first reverse rope wheel group and the second reverse rope wheel group to drive the car to lift, and the first reverse rope wheel group and the second reverse rope wheel group are respectively positioned at two sides of the plane formed by the connecting line of the central lines of the first guide rails, so that the bad phenomenon that the car inclines in the lifting process can be avoided, the stress effect of the guide shoes and the balance degree of the car are favorably improved, the running stability is better, and the comfort level is improved.

In one embodiment, the center of gravity of the car is located on a plane formed by connecting the center lines of the two first guide rails; the center of gravity of two first guide rails coincides with the center of gravity of the car.

In one embodiment, the first diverting pulley group and the second diverting pulley group are symmetrically arranged about a plane formed by the connecting line of the central lines of the two first guide rails; the first reverse rope pulley sets are more than two, and one of the hoisting ropes is wound on the more than two first reverse rope pulley sets; the second reverse rope pulley sets are more than two, and the other hoisting rope is wound on the second reverse rope pulley sets.

In one embodiment, the elevator system further comprises a counterweight, a third reverse sheave group, a fourth reverse sheave group and two second guide rails; the third reverse rope pulley group and the fourth reverse rope pulley group are arranged on the balance weight, and the third reverse rope pulley group and the fourth reverse rope pulley group are also respectively arranged corresponding to the two hoisting ropes; the two second guide rails are respectively arranged on two opposite side surfaces of the counterweight.

In one embodiment, the two second guide rails are symmetrically arranged about a plane formed by connecting the central lines of the two first guide rails.

In one embodiment, the elevator system further includes a first rope head seat and a second rope head seat disposed on the hoistway wall, two ends of the hoisting rope are respectively connected to the first rope head seat and the second rope head seat, one of the hoisting ropes is sequentially disposed around the first reverse sheave seat, one of the traction sheaves and the third reverse sheave seat, and the other of the hoisting ropes is sequentially disposed around the second reverse sheave seat, the other of the traction sheaves and the fourth reverse sheave seat.

In one embodiment, the first reverse rope pulley set and the second reverse rope pulley set are both arranged on the bottom surface or the top surface of the car; a first upright post is arranged on a side beam of the bottom surface of the lift car, and safety tongs matched with the guide rails are arranged on the first upright post; be provided with on the top surface of car with guide rail matched with leads boots on, be provided with on the bottom surface of car with guide rail matched with leads boots down.

In one embodiment, when the first and second diverting sheave groups are both disposed on the bottom surface of the car, the bottom surface of the safety gear is closer to the bottom surface of the car than the bottom surfaces of the diverting sheave bracket of the first diverting sheave assembly and the diverting sheave bracket of the second diverting sheave assembly, the upper guide shoe is disposed between two cross beams on the top surface of the car, and the top surface of the upper guide shoe is not higher than the top surfaces of the cross beams;

when first reverse rope wheelset with second reverse rope wheelset all set up in when on the top surface of car, go up the top surface of leading boots for the diverting pulley support of first diverting pulley subassembly with the top surface of the diverting pulley support of second diverting pulley subassembly is close to more the top surface of car.

In one embodiment, the main machine assembly further comprises a brake arranged on the supporting seat, a rotating shaft connected with a power output shaft of the motor is arranged on the supporting seat, the brake is used for braking the rotating shaft, and the traction sheave is arranged on the rotating shaft.

In one embodiment, the motor and the brake are located between the two traction sheaves; or the motor and the supporting seat are of an integrated structure; or the brake is arranged on one side of one traction sheave, which faces away from the motor.

Drawings

Fig. 1 is a schematic structural view of an elevator system according to an embodiment of the present invention;

fig. 2 is a perspective view of an elevator system according to an embodiment of the present invention;

fig. 3 is another perspective view of an elevator system according to an embodiment of the present invention;

fig. 4 is a further perspective view of an elevator system according to an embodiment of the present invention;

fig. 5 is a top view of an elevator system according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an elevator system according to another embodiment of the present invention;

fig. 7 is a schematic structural view of an elevator system according to an embodiment of the present invention in which a first diverting sheave group and a second diverting sheave group are disposed on a bottom surface of a car;

fig. 8 is a diagram illustrating a positional relationship between an upper guide shoe and a cross member of a top surface of a car in an elevator system according to an embodiment of the present invention;

fig. 9 is a schematic structural view of an elevator system according to an embodiment of the present invention in which a first diverting sheave group and a second diverting sheave group are disposed on the top surface of a car;

fig. 10 is a schematic structural view of a main unit assembly in an elevator system according to an embodiment of the present invention.

Reference numerals:

10. a car; 11. a boundary beam; 12. a cross beam; 20. a first guide rail; 30. a first reverse rope pulley group; 31. a diverting pulley bracket; 40. a second reverse rope pulley group; 50. a host component; 51. a motor; 52. a supporting seat; 521. a base plate; 522. a support plate; 53. a traction sheave; 54. a brake; 55. a rotating shaft; 60. a hoisting rope; 70. balancing weight; 71. a third reverse rope pulley group; 72. a fourth reverse rope pulley group; 73. a second guide rail; 81. a first rope head seat; 82. a second rope head seat; 91. a first upright post; 92. safety tongs; 93. and an upper guide shoe.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

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

In the description of the present invention, it should be understood that 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. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In one embodiment, referring to fig. 1 to 5, an elevator system includes a car 10, two first guide rails 20, a first diverting sheave group 30, a second diverting sheave group 40, a main machine assembly 50, and two hoisting ropes 60.

The two first guide rails 20 are respectively disposed on two opposite side surfaces of the car 10, and the first guide rails 20 are located in the middle of the side surfaces of the car 10. The first diverting pulley group 30 and the second diverting pulley group 40 are respectively located at two sides of a plane formed by connecting lines of central lines of the two first guide rails 20. The main unit assembly 50 includes a motor 51, a support base 52 and two traction sheaves 53. The motor 51 is disposed on the support seat 52. The support seat 52 is provided on the wall of the hoistway. The two traction sheaves 53 are respectively located at two sides of the motor 51, the motor 51 is used for driving the traction sheaves 53 to rotate, and the two traction sheaves 53 are respectively arranged corresponding to the first diverting sheave group 30 and the second diverting sheave group 40. The two hoisting ropes 60 are respectively disposed corresponding to the first diverting sheave group 30 and the second diverting sheave group 40, and the two hoisting ropes 60 are also respectively disposed around the two hoisting sheaves 53.

In the elevator system, when the main machine component 50 works, the two hoisting ropes 60 drive the first rope diverting pulley group 30 and the second rope diverting pulley group 40 to drive the car 10 to lift under the combined action, and simultaneously, the first rope diverting pulley group 30 and the second rope diverting pulley group 40 are respectively positioned at two sides of the plane formed by the connecting line of the central lines of the first guide rails 20, so that the bad phenomenon that the car 10 inclines in the lifting process can be avoided, the shoe guide stress effect is favorably improved, the balance degree of the car 10 is ensured, the running stability is good, and the comfort degree is improved. In addition, the host computer subassembly 50 compact structure can increase the well utilization ratio, under the prerequisite that can satisfy elevator basic operation characteristic, reduces the well size to the at utmost, satisfies the operation requirement.

It should be noted that the hoisting rope 60 may be a steel wire rope, a steel belt, a steel chain, etc., and is not limited herein. Specifically, in this embodiment, in order to improve the stability of the car 10 in the lifting process, the hoisting rope 60 is made of, for example, two steel belts, and the two steel belts are wound around the traction sheave 53 and the first reverse sheave group 30 or the second reverse sheave group 40, so that the adverse phenomenon of inclination in the lifting process of the car 10 can be avoided, the improvement of the stress effect of the guide shoes and the balance degree of the car 10 are facilitated, the running stability is good, and the comfort level is improved.

Further, referring to fig. 1 to 5, the center of gravity of the car 10 is located on a plane formed by connecting the center lines of the two first guide rails 20. Specifically, the center of gravity of the two first guide rails 20 coincides with the center of gravity of the car 10. So, be favorable to improving the equilibrium degree of car 10 among the lift process, car 10 operating stability is better, and the comfort level can improve.

Further, referring to fig. 1 to 5, the first pulley set 30 and the second pulley set 40 are symmetrically disposed about a plane formed by a connecting line of center lines of the two first guide rails 20. Therefore, the direction of the resultant force of each hoisting rope 60 acting on the car 10 can pass through the gravity center of the car 10, so that the balance degree of the car 10 in the lifting process can be improved, the running stability of the car 10 is good, and the comfort level is improved.

Further, the number of the first diverting sheave groups 30 is two or more, and one of the hoisting ropes 60 is wound around the two or more first diverting sheave groups 30. In addition, the number of the second reverse sheave blocks 40 is two or more, and the other hoist rope 60 is wound around the two or more second reverse sheave blocks 40. Thus, the lift car 10 can be lifted smoothly, and the lift car 10 can be prevented from inclining in the lifting process. Specifically, there are two first diverting sheave groups 30, and the two first diverting sheave groups 30 are disposed on two opposite side edges of the car 10, respectively. Likewise, there are two second reverse sheave blocks 40, and the two second reverse sheave blocks 40 are respectively disposed on two opposite side edges of the car 10.

In one embodiment, referring to fig. 1 to 5 again, the elevator system further includes a counterweight 70, a third reverse sheave group 71, a fourth reverse sheave group 72, and two second guide rails 73. The third reverse sheave group 71 and the fourth reverse sheave group 72 are disposed on the counterweight 70, and the third reverse sheave group 71 and the fourth reverse sheave group 72 are further disposed corresponding to the two hoisting ropes 60, respectively. The two second guide rails 73 are respectively provided on two opposite side surfaces of the counterweight 70. Therefore, each part of the elevator system is compact in arrangement, the utilization rate of the shaft can be increased, the size of the shaft can be reduced to the greatest extent on the premise that the basic operation characteristics of the elevator can be met, and the use requirement can be met.

Further, referring to fig. 1 to 4, the two second guide rails 73 are symmetrically arranged about a plane formed by a connecting line of the center lines of the two first guide rails 20. So, on the one hand, structural arrangement is compact, can increase the well utilization ratio, under the prerequisite that can satisfy elevator basic operation characteristic, furthest reduces the well size, satisfies the operation requirement. On the other hand, the symmetrical design makes the center of gravity of hanging coincide with the center of gravity of car 10, can avoid the car 10 to go up and down the bad phenomenon that the in-process takes place to incline betterly, is favorable to improving and leads boots atress effect and guarantees the equilibrium degree of car 10, and the operating stability is better, and the comfort level can improve.

In one embodiment, referring again to fig. 1-4, the elevator system further includes a first rope socket 81 and a second rope socket 82 disposed on the hoistway wall. Two ends of the hoisting rope 60 are respectively connected with the first rope head seat 81 and the second rope head seat 82, one of the hoisting ropes 60 is sequentially arranged around the first reverse rope sheave seat, one of the hoisting wheels 53 and the third reverse rope sheave seat, and the other hoisting rope 60 is sequentially arranged around the second reverse rope sheave seat, the other hoisting wheel 53 and the fourth reverse rope sheave seat. Thus, the elevator system described achieves a 2:1 draw ratio. Of course, the hoisting ratio of the elevator system is not limited to 2:1, and may be set to 4:1, 8:1, or 16:1 as needed, and is not limited herein.

In one embodiment, referring to fig. 1 to 6, the first diverting pulley set 30 and the second diverting pulley set 40 illustrated in fig. 1 to 7 are both disposed on the bottom surface of the car 10, and the first diverting pulley set 30 and the second diverting pulley set 40 illustrated in fig. 9 are both disposed on the top surface of the car 10. A first upright column 91 is arranged on the boundary beam 11 of the bottom surface of the car 10, and a safety gear 92 matched with the guide rail is arranged on the first upright column 91. Be provided with on the top surface of car 10 with guide rail matched with leads boots 93 on, be provided with on the bottom surface of car 10 with guide rail matched with leads boots down.

Specifically, referring to fig. 1, 7 and 8, when the first diverting sheave group 30 and the second diverting sheave group 40 are both disposed on the bottom surface of the car 10, the bottom surface of the safety gear 92 is closer to the bottom surface of the car 10 than the bottom surfaces of the diverting sheave bracket 31 of the first diverting sheave group 30 and the diverting sheave bracket 31 of the second diverting sheave group 40, the upper guide shoe 93 is disposed between the two cross beams 12 on the top surface of the car 10, and the top surface of the upper guide shoe 93 is not higher than the top surfaces of the cross beams 12. Therefore, the depth of the pit can be correspondingly reduced, and the size of the well is reduced to a certain extent; in addition, the structural arrangement is compact, and the utilization rate of the shaft is increased.

In another embodiment, referring to fig. 9, when the first and second diverting

sheave groups

30 and 40 are both disposed on the top surface of the car 10, the top surface of the upper guide shoe 93 is closer to the top surface of the car 10 than the top surfaces of the diverting sheave bracket 31 of the first diverting sheave group 30 and the diverting sheave bracket 31 of the second diverting sheave group 40. Therefore, the height of the top layer can be correspondingly reduced, and the size of the well is reduced to a certain extent; in addition, the structural arrangement is compact, and the utilization rate of the shaft is increased.

In one embodiment, referring to fig. 1 and 10, the host assembly 50 further includes a stopper 54 disposed on the support base 52. The support seat 52 is provided with a rotating shaft 55 connected with a power output shaft of the motor 51, the brake 54 is used for braking the rotating shaft 55, and the traction sheave 53 is arranged on the rotating shaft 55.

Further, the motor 51 and the brake 54 are located between the two traction sheaves 53; alternatively, the motor 51 and the support seat 52 are integrated; alternatively, the brake 54 is disposed on a side of one of the traction sheaves 53 facing away from the motor 51.

Further, referring to fig. 1 and 10, the supporting base 52 includes a bottom plate 521 and two supporting plates 522 spaced apart from each other on the bottom plate 521. The rotating shaft 55 is rotatably mounted on the supporting plate 522, and the motor 51 is mounted on the bottom plate 521. The floor 521 is disposed on a hoistway wall. The main unit assembly 50 may be arranged in such a manner that the brake 54-the supporting plate 522-the traction sheave 53-the motor 51-the traction sheave 53-the supporting plate 522, or the traction sheave 53-the supporting plate 522-the motor 51-the brake 54-the supporting plate 522-the traction sheave 53, or the supporting plate 522-the traction sheave 53-the brake 54-the motor 51-the traction sheave 53. In addition, when the motor 51 and the support base 52 are integrally formed, the main unit 50 is disposed in such a manner that the traction sheave 53-the motor 51 and the support base 52-the brake 54-the traction sheave 53. Therefore, the arrangement of all parts of the elevator system is compact, the utilization rate of the shaft can be increased, the size of the shaft can be reduced to the greatest extent on the premise of meeting the basic operation characteristics of the elevator, and the use requirement can be met.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An elevator system, comprising:

a car;

the two first guide rails are respectively arranged on two opposite side surfaces of the car, and the first guide rails are positioned in the middle of the side surfaces of the car;

the first rope reversing wheel group and the second rope reversing wheel group are respectively positioned on two sides of a plane formed by connecting lines of central lines of the two first guide rails;

the main machine component comprises a motor, a supporting seat and two traction wheels, the motor is arranged on the supporting seat, the supporting seat is arranged on the wall of a well, the two traction wheels are respectively positioned on two sides of the motor, the motor is used for driving the traction wheels to rotate, and the two traction wheels are respectively arranged corresponding to the first return rope pulley group and the second return rope pulley group; and

the two hoisting ropes are respectively and correspondingly arranged with the first diversion sheave group and the second diversion sheave group, and are respectively and correspondingly wound on the two hoisting sheaves.

2. The elevator system of claim 1, wherein a center of gravity of the car is located on a plane formed by a line connecting centerlines of the two first guide rails; the center of gravity of two first guide rails coincides with the center of gravity of the car.

3. The elevator system of claim 1, wherein the first set of pulley sheaves and the second set of pulley sheaves are symmetrically disposed about a plane formed by a line connecting center lines of the two first guide rails; the first reverse rope pulley sets are more than two, and one of the hoisting ropes is wound on the more than two first reverse rope pulley sets; the second reverse rope pulley sets are more than two, and the other hoisting rope is wound on the second reverse rope pulley sets.

4. The elevator system of claim 1, further comprising a counterweight, a third reverse sheave group, a fourth reverse sheave group, and two second guide rails; the third reverse rope pulley group and the fourth reverse rope pulley group are arranged on the balance weight, and the third reverse rope pulley group and the fourth reverse rope pulley group are also respectively arranged corresponding to the two hoisting ropes; the two second guide rails are respectively arranged on two opposite side surfaces of the counterweight.

5. The elevator system according to claim 4, wherein the two second guide rails are disposed symmetrically with respect to a plane formed by a line connecting center lines of the two first guide rails.

6. The elevator system according to claim 4, further comprising a first rope head base and a second rope head base provided on a hoistway wall, wherein both ends of the hoisting rope are connected to the first rope head base and the second rope head base, respectively, one of the hoisting ropes is provided around the first reverse sheave base, one of the traction sheaves, and the third reverse sheave base in this order, and the other of the hoisting ropes is provided around the second reverse sheave base, the other of the traction sheaves, and the fourth reverse sheave base in this order.

7. The elevator system of claim 1, wherein the first reverse sheave group and the second reverse sheave group are both disposed on a bottom surface or a top surface of the car; a first upright post is arranged on a side beam of the bottom surface of the lift car, and safety tongs matched with the guide rails are arranged on the first upright post; be provided with on the top surface of car with guide rail matched with leads boots on, be provided with on the bottom surface of car with guide rail matched with leads boots down.

8. The elevator system of claim 7, wherein when the first and second sheave assemblies are both disposed on a bottom surface of the car, a bottom surface of the safety gear is closer to the bottom surface of the car relative to bottom surfaces of the sheave brackets of the first and second sheave assemblies, the upper guide shoe is disposed between two cross beams on a top surface of the car, and a top surface of the upper guide shoe is not higher than top surfaces of the cross beams;

9. The elevator system according to any one of claims 1 to 8, wherein the main machine assembly further comprises a brake provided on the support base, a rotating shaft connected to a power output shaft of the motor is provided on the support base, the brake is configured to brake the rotating shaft, and the traction sheave is provided on the rotating shaft.

10. The elevator system of claim 9, wherein the motor and the brake are located between the two traction sheaves; or the motor and the supporting seat are of an integrated structure; or the brake is arranged on one side of one traction sheave, which faces away from the motor.