CN112125079A

CN112125079A - Car balance adjusting device and elevator

Info

Publication number: CN112125079A
Application number: CN202011039950.7A
Authority: CN
Inventors: 伍翔; 官维凌; 钟秀琼
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-12-25
Anticipated expiration: 2040-09-28
Also published as: CN112125079B

Abstract

The invention relates to a car balance adjusting device and an elevator, comprising: one end of the traveling cable is electrically connected with a control system, and the other end of the traveling cable is set as an adjusting end; a position sensor for mounting on a car and for electrical connection with the control system; and the movable suspension device comprises a mounting seat and a shifting mechanism, the mounting seat is used for mounting on the car, the shifting mechanism is movably arranged on the mounting seat and connected with the adjusting end, and the shifting mechanism can adjust the adjusting end to be in the position on the car. Therefore, the car balance adjusting device can dynamically adjust the car to keep the horizontal position and posture all the time according to the real-time running condition of the car, so that the elevator riding experience and comfort level of passengers in the car can be guaranteed, the elevator can be guaranteed to run stably, and potential safety hazards are eliminated.

Description

Car balance adjusting device and elevator

Technical Field

The invention relates to the technical field of elevators, in particular to a car balance adjusting device and an elevator.

Background

When the elevator runs, in order to supply power and transmit signals to various electric devices equipped on the car, the car is usually externally provided with a traveling cable which is connected with a control system through the traveling cable, and when the car moves upwards or downwards, the traveling cable also moves upwards or downwards correspondingly.

However, because the quantity of the passengers and the articles carried in the car and the positions of the passengers and the articles in the car are different, and when the car is at different height positions, the length of the overhanging section of the traveling cable is different, the gravity center of the car can be deflected, the car can be deflected to a certain side direction by direct representation, the riding comfort and experience of the passengers in the car are influenced, meanwhile, the stable operation of the elevator can also be influenced, and even potential safety hazards are caused.

Disclosure of Invention

Based on this, it is necessary to provide a car balance adjustment device and an elevator, and the car balance adjustment device and the elevator aim at solving the problem that the car in the prior art is askew due to gravity center deflection, so that the operation stability is influenced, and the elevator taking experience is influenced.

In one aspect, the present application provides a car balance adjustment device, the car balance adjustment device includes:

one end of the traveling cable is electrically connected with a control system, and the other end of the traveling cable is set as an adjusting end;

a position sensor for mounting on a car and for electrical connection with the control system; and

the movable suspension device comprises a mounting seat and a shifting mechanism, the mounting seat is used for being mounted on the car, the shifting mechanism is movably arranged on the mounting seat and connected with the adjusting end, and the shifting mechanism can adjust the adjusting end to be in the position on the car.

The car balance adjusting device is applied to an elevator, particularly is installed on a car and used for readjusting the car to be balanced when the car is inclined. Specifically, a position sensor is mounted on the car, the position sensor can detect and acquire position information (namely height information in a hoistway) of the car in real time and transmit the position information to a control system, and the control system can calculate and combine the running direction of the car according to the analysis of the position information and further judge the direction of the car to which the car is skewed; next, the control system controls the shifting mechanism to start moving, the adjusting end carrying the traveling cable moves on the mounting seat, and then the position of the adjusting end on the car is changed, specifically, the adjusting end moves towards the opposite direction of the car skew direction, and at the moment, the center of gravity of the car can be readjusted to the central position due to the change of the position and the length of the traveling cable suspension section, so that the balance adjustment of the car is realized. Therefore, the car balance adjusting device can dynamically adjust the car to keep the horizontal position and posture all the time according to the real-time running condition of the car, so that the elevator riding experience and comfort level of passengers in the car can be guaranteed, the elevator can be guaranteed to run stably, and potential safety hazards are eliminated.

The technical solution of the present application is further described below:

in one embodiment, the car balance adjusting device further comprises a signal conversion device, the signal conversion device is electrically connected with the control system, and the signal conversion device is electrically connected with the shifting mechanism.

In one embodiment, the mounting seat and the shifting mechanism are arranged at the bottom of the car, and the shifting mechanism can drive the adjusting end to move so as to change the position of the adjusting end at the bottom of the car.

In one embodiment, the displacement mechanism comprises a driving source, a driving member and a driven member, the driven member is connected with the traveling cable, the driving source is in driving connection with the driving member, and the driving member is in contact with the driven member and can drive the driven member to move on the mounting seat, so that the position of the traveling cable on the car is adjusted.

In one embodiment, the mounting seat is provided with a track, the driven member is arranged in the track and can move along the track, and the driven member can carry the traveling cable to any position at the bottom of the car.

In one embodiment, the displacement mechanism further includes a fixed frame, the driving source is a motor, the motor is disposed on the fixed frame, the actuating member is a roller and a rotating belt sleeved outside the roller, the driven member is a driven wheel, and the driven wheel is pressed between the track and the rotating belt.

In one embodiment, the shifting mechanism further comprises a wire hanging rack, and the wire hanging rack is respectively connected with the driven member and the traveling cable, so that the traveling cable and the mounting seat are arranged at intervals.

In one embodiment, the wire hanging frame is arranged between the fixed frame and the mounting seat.

In one embodiment, the tracks and the shifting mechanisms are arranged in two and are connected in one-to-one correspondence, and the two shifting mechanisms are respectively connected with the adjusting ends of the two travelling cables.

In another aspect, the present application also provides an elevator including the car balance adjustment apparatus as described above.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

fig. 2 is a schematic structural diagram of a car balance adjustment device according to an embodiment of the present invention;

FIG. 3 is a state diagram of the normal operation of the car in the horizontal position of the present invention;

FIG. 4 is a state diagram of the car of the present invention skewed in a first direction when ascending;

FIG. 5 is a state view of the trailing cable of FIG. 4 being moved in a second direction to level the cab;

FIG. 6 is a diagram of the car of the present invention tilted in a second direction as it travels downward;

fig. 7 is a state diagram of the car being leveled after the traveling cable in fig. 6 is moved in the first direction.

Description of reference numerals:

100. an elevator; 10. a car; 20. a traction system; 30. a control system; 40. a hoisting rope; 50. to the pouring weight; 60. a car balance adjustment device; 61. a trailing cable; 62. a movable suspension device; 621. a mounting seat; 621a, a track; 622. a displacement mechanism; 623. a drive source; 624. a driver; 625. a driven member; 626. a fixed mount; 627. a wire hanging frame.

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.

As shown in fig. 1, an elevator 100 provided in the embodiment of the present application may be specifically an elevator apparatus with various types and structures commonly found in the market, such as a machine room-less elevator, a sightseeing elevator, and the like. However, the main constituent elements of the elevator 100, regardless of the type or structure, include a control system 30, a traction system 20, a car 10, and a counterweight 50.

Wherein, the control system 30 and the traction system 20 are installed at the top of the hoistway, the car 10 is connected with the counterweight 50 through the traction rope 40, at this time, the car 10 and the counterweight 50 form weight balance, and when the car 10 moves up and down in the hoistway, the counterweight 50 can also move up and down in the hoistway synchronously. Further, the hoist ropes 40 are also connected to the traction system 20, and the movement force required for the upward or downward movement of the car 10 is provided by the traction system 20.

In addition, the elevator 100 includes a car balance adjustment device. Because of the influence of factors such as the number of passengers and articles in the car 10 and the uneven distribution position of the passengers and articles in the car 10, the center of gravity of the car 10 is often deviated, and further the car 10 is deviated to one side direction, so that the riding experience and comfort of passengers in the car 10 are influenced, and the normal and reliable operation of the elevator 100 is influenced. The car balance adjusting device can quickly and accurately correct the deflection of the car 10 so as to restore the car 10 to a horizontal posture.

With continuing reference to fig. 1, a car balance adjusting device according to an embodiment of the present application is shown, the car balance adjusting device includes: trailing cable 61, position sensor and movable suspension 62.

With reference to fig. 2, one end of the traveling cable 61 is used for electrically connecting with the control system 30, and the other end of the traveling cable 61 is set as an adjusting end; the position sensor is used for being installed on the car 10, and the position sensor is used for being electrically connected with the control system 30; the movable suspension device 62 comprises a mounting seat 621 and a shifting mechanism 622, the mounting seat 621 is used for being mounted on the car 10, the shifting mechanism 622 is movably arranged on the mounting seat 621 and connected with the adjusting end, and the shifting mechanism 622 can adjust the adjusting end to be in the position on the car 10.

In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the car balance adjustment device is applied to an elevator 100, particularly mounted on a car 10, and is used for adjusting the car 10 to be balanced again when the car 10 is inclined. Specifically, a position sensor is mounted on the car 10, the position sensor can detect and acquire position information (namely height information in a hoistway) of the car 10 in real time and transmit the position information to the control system 30, and the control system 30 can calculate and combine the running direction of the car according to analysis of the position information and further judge which direction the car 10 is skewed; next, the control system 30 controls the shifting mechanism 622 to start moving, and the adjusting end carrying the traveling cable 61 moves on the mounting seat 621, so as to change the position of the adjusting end on the car 10, specifically, the adjusting end moves in the direction opposite to the skew direction of the car 10, and at this time, due to the change of the position and length of the suspension section of the traveling cable 61, the center of gravity of the car 10 can be readjusted to the central position, that is, the balance adjustment of the car 10 is realized. Therefore, the car balance adjusting device can dynamically adjust the car 10 to keep the horizontal pose all the time according to the real-time running condition of the car 10, so that the elevator riding experience and the comfort level of passengers in the car 10 can be ensured, the elevator 100 can be ensured to run stably, and potential safety hazards are eliminated.

With continued reference to fig. 3-7, it will be readily appreciated that the direction of skew of the car 10 is related to parameters such as the height position of the car 10 within the hoistway, the length of the suspended section of the trailing cable 61, and the like. Specifically, when the car 10 moves upward (that is, when the height of the car 10 increases), the length of the suspended section of the traveling cable 61 becomes large, and accordingly the weight of the suspended section becomes large, so that the car 10 may be skewed toward the suspended section of the traveling cable 61; at this time, the control system 30 controls the shifting mechanism 622 to move the adjusting end in the opposite direction of the skew of the car 10, so that the weight of the suspended section of the traveling cable 61 is shifted, and the center of gravity of the car 10 can be adjusted, thereby achieving the purpose of re-leveling the car 10. Similarly, when the car 10 goes down (that is, when the height of the car 10 is reduced), the length of the suspended section of the traveling cable 61 is reduced, and accordingly the weight of the suspended section is reduced, at this time, the car 10 may skew toward the direction away from the suspended section of the traveling cable 61, at this time, the control system 30 controls the shifting mechanism 622 to drive the adjusting end to move toward the direction opposite to the direction in which the car 10 is skewed, and the weight of the suspended section of the traveling cable 61 can also be shifted, so that the center of gravity of the car 10 can be adjusted, and the purpose of re-leveling the car 10 can be achieved.

That is, simply, the car 10 is tilted to the left (the center of gravity is also shifted to the left), and the shifting mechanism 622 moves the adjustment end to the right to adjust the center of gravity of the car 10 to the right, so that the car 10 returns to the horizontal position. When the car 10 is tilted to the right (the center of gravity is also shifted to the right), the shift mechanism 622 moves the adjustment end to the left to adjust the center of gravity of the car 10 to the left, so that the car 10 returns to the horizontal position.

In addition, it should be noted that the traveling cable 61 is driven by the displacement mechanism 622 to flexibly move at the bottom of the car, and wind swing generated by the traveling cable 61 blown by wind can be prevented, so that the traveling cable 61 has the anti-torsion capability, and the safety and normal operation of the traveling cable are ensured. Of course, the active suspension unit 62 of the present solution can also be adapted to other suspension elements (e.g. compensating chains) similar to the trailing cable 61 for the same purpose.

In some embodiments, the position sensor is specifically configured as a rotary encoder. Rotary encoder can be along with the reciprocating of car 10, and the real-time height information of car 10 in the well is monitored out to the accurate monitoring to can feed back control system 30, calculate the section of dangling of retinue cable 61 and become long or shorten, and then just can accurately judge the incline direction of car 10, so that make accurate judgement to the moving direction of the adjustment end of retinue cable 61 for car balance adjustment device.

Further, the car balance adjusting device further includes a signal conversion device, the signal conversion device is electrically connected to the control system 30, and the signal conversion device is electrically connected to the shifting mechanism 622. Since the rotary encoder detects an analog signal representing position data of the car 10, the analog signal is transmitted to a signal conversion device and can be converted into a voltage/current signal recognized by the displacement mechanism 622, and the displacement mechanism 622 can be controlled by the control system 30 to move.

Preferably, the mounting seat 621 and the shifting mechanism 622 are both disposed at the bottom of the car 10, and the shifting mechanism 622 can drive the adjusting end to move so as to change the position of the adjusting end at the bottom of the car 10. By arranging the traveling cable 61 at the bottom of the car 10, the traveling cable 61 can highlight the gravity center adjustment effect generated by the weight distribution change of the overhanging section after being driven by the shifting mechanism 622 to realize the position change, so that the gravity center of the car 10 can be adjusted at a faster response speed.

With continued reference to fig. 2, in some embodiments, the displacement mechanism 622 includes a driving source 623, a stopper 624 and a follower 625, the follower 625 is connected to the traveling cable 61, the driving source 623 is in driving connection with the stopper 624, and the stopper 624 is in contact with the follower 625 and can drive the follower 625 to move on the mounting seat 621, so as to adjust the position of the traveling cable 61 on the car 10.

After the control system 30 obtains the real-time position of the car 10, a working instruction is output to the driving source 623, the driving source 623 drives the moving member 624 to move, the moving member 624 synchronously drives the driven member 625 to move on the mounting seat 621, the position of the adjusting end of the traveling cable 61 at the bottom of the car 10 is driven to change, and finally the car 10 with the skew is adjusted and restored to the horizontal position.

With continued reference to fig. 2, further, the mounting seat 621 is provided with a track 621a, the follower 625 is disposed in the track 621a and can move along the track 621a, and the follower 625 can carry the traveling cable 61 to reach any position at the bottom of the car 10. Therefore, the track 621a can guide and limit the moving path of the driven member 625, so that the traveling cable 61 can accurately move according to a preset direction, the accuracy of adjusting the pose of the car 10 is guaranteed, and the car 10 can be restored to an absolute horizontal pose.

Alternatively, the rail 621a is provided in a linear type in this embodiment, and therefore the displacement mechanism 622 can move with a large distance between the two opposite sides of the car 10 with the adjustment end of the traveling cable 61, so that the traveling cable 61 can cope with adjustment requirements of various skew angles. In particular, since the placement positions of passengers and articles in the cage 10 have randomness in the circumferential plane, the cage 10 may be skewed in various directions of the circumference. Based on this, the rail 621a can be set to be in various shapes such as arc, triangle, rectangle, circle, X-shape, M-shape, etc., as long as it is ensured that the shifting mechanism 622 drives the adjusting end of the traveling cable 61 to move to any position at the bottom of the car 10, thereby realizing the correction of the posture of the car 10.

With reference to fig. 2, on the basis of any of the above embodiments, the shifting mechanism 622 further includes a fixed frame 626, the driving source 623 is configured as a motor, the motor is disposed on the fixed frame 626, the actuating member 624 is configured as a roller and a rotating belt sleeved outside the roller, the driven member 625 is configured as a driven wheel, and the driven wheel is pressed between the track 621a and the rotating belt.

The motor can be fixed on the mounting seat 621 through the fixing frame 626 or directly fixed at the bottom of the car 10, so that the motor can work reliably. The motor outputs rotating power to drive the roller and the rotating belt to rotate, the rotating belt applies friction force to the driven wheel, the driven wheel can be driven to roll on the track 621a synchronously, and the purpose of driving the traveling cable 61 to move is achieved. The driving mechanism is simple in structure composition, stable in power transmission and capable of driving the traveling cable 61 to the target position at the bottom of the car 10 quickly, and the position of the car 10 can be adjusted quickly and accurately.

In other embodiments, the driving mechanism composed of the motor, the roller, the rotating belt, and the driven wheel may be implemented by a double cylinder combination of a telescopic cylinder and a rotating cylinder, or a power combination of an electric push rod and a rotating motor connected to the adjusting end, in order to drive the adjusting end of the traveling cable 61 to move on the bottom of the car 10.

With reference to fig. 2, in addition to any of the above embodiments, the shifting mechanism 622 further includes a wire hanging rack 627, and the wire hanging rack 627 is respectively connected to the follower 625 and the traveling cable 61, so that the traveling cable 61 and the mounting seat 621 are arranged at an interval. The wire hanging rack 627 can indirectly connect and fix the traveling cable 61 and the driven wheel, and ensures that the traveling cable 61 is stably installed. Meanwhile, the wire hanging rack 627 has a certain length, so that a certain safety distance is formed between the traveling cable 61 and the mounting seat 621, and the problem that the traveling cable 61 cannot interfere with the mounting seat 621 when moving is solved.

Further, the wire hanging rack 627 is disposed between the fixing frame 626 and the mounting seat 621. At this time, the fixing frame 626 and the mounting seat 621 can respectively limit the degrees of freedom of the wire hanging rack 627 in two opposite directions transversely, i.e., in directions at two ends of a straight line perpendicular to the extending direction of the guide rail, so that the driven wheel cannot be separated from the guide rail, the driven wheel is guaranteed to reliably move on the rail 621a, and the working reliability of the whole shifting mechanism 622 is further improved.

In particular, the fixing frame 626 and the wire hanging frame 627 are in clearance fit, and the wire hanging frame 627 and the mounting seat 621 are in clearance fit, so that the friction and abrasion existing all the time during the work are avoided, and the service lives of the three components are prolonged.

Further, on the basis of any of the above embodiments, the track 621a and the displacement mechanism 622 are disposed in two and connected in a one-to-one correspondence manner, and the two displacement mechanisms 622 are respectively connected to the adjusting ends of the two traveling cables 61. Specifically, the two shifting mechanisms 622 are respectively disposed on two opposite side surfaces of the mounting seat 621, and since the two shifting mechanisms 622 are respectively connected to two sides of the adjustment end of the traveling cable 61 at the same time, the adjustment end can be supported in a balanced manner, and at this time, the two shifting mechanisms 622 synchronously move along the corresponding tracks 621a, so that the traveling cable 61 can be stably and reliably driven to move.

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.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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 present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A car balance adjustment device, characterized in that the car balance adjustment device comprises:

2. The car balance adjustment device of claim 1, further comprising a signal conversion device for electrical connection with the control system, the signal conversion device being electrically connected with the displacement mechanism.

3. The car balance adjustment device of claim 1, wherein the mounting seat and the displacement mechanism are both disposed at a bottom of the car, and the displacement mechanism is capable of driving the adjustment end to move so as to change a position of the adjustment end at the bottom of the car.

4. A car balance adjustment device as defined in claim 1, wherein the displacement mechanism includes a drive source, a follower, and a follower, the follower being connected to the trailing cable, the drive source being drivingly connected to the follower, the follower being in contact with the follower and being capable of driving the follower to move on the mount, thereby adjusting the position of the trailing cable on the car.

5. The car balance adjustment device of claim 4, wherein the mounting base is provided with a track, the follower is disposed in the track and is capable of moving along the track, and the follower is capable of carrying the trailing cable to any position on the bottom of the car.

6. The car balance adjustment device of claim 5, wherein the displacement mechanism further comprises a fixed frame, the driving source is a motor, the motor is disposed on the fixed frame, the actuating member is a roller and a rotating belt sleeved outside the roller, the driven member is a driven wheel, and the driven wheel is pressed between the track and the rotating belt.

7. The car balance adjustment device of claim 6, wherein the displacement mechanism further comprises a wire rack that connects the follower and the trailing cable, respectively, such that the trailing cable is spaced from the mount.

8. The car balance adjustment device of claim 7, wherein the wire hanger is disposed between the fixed mount and the mount.

9. The car balance adjustment device of claim 5, wherein the rails and the displacement mechanisms are each provided in two and connected in one-to-one correspondence, and the two displacement mechanisms are respectively connected to the adjustment ends of the two traveling cables.

10. An elevator characterized by comprising the car balance adjustment device according to any one of claims 1 to 9.