Damping device for elevator car and elevator system having the same

Abstract

The present invention provides a damping device for an elevator car, which includes a moving member and a plurality of fixed members. The moving member is movably arranged on the elevator car; the plurality of fixed members are respectively arranged at a plurality of leveling positions of the elevator hoistway. Each fixed member is an elastic damping member, and each damping member has a damping space with at least one side open. The damping space includes a first space and a second space communicating with the first space. When the elevator car stops at a predetermined stop position on a certain leveling floor, the moving member moves to the opening of the damping member and extends into the first space. And when the elevator car stopped at a certain leveling floor moves upward or downward relative to the predetermined stop position by a predetermined distance, the moving member enters the second space and frictionally cooperates with the inner wall of the second space to reduce the up-and-down shaking of the elevator car when passengers get on and off. The damping device has the advantages of large frictional force and long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more particularly, to a damping device for an elevator car and an elevator system having the same. Background Art

[0002] In the technical field of elevators, due to the elasticity of the elevator traction suspension device, elastic elongation will occur when passengers enter and exit the elevator car, causing the elevator car to sink. Especially when there is a large lifting height, the elastic elongation of the elevator traction suspension device is relatively large, resulting in a large amount of sinking of the elevator car. Thus, when the elevator car is located on the lower floors, when passengers enter and exit the elevator car, the elevator car will exhibit very obvious up and down shaking. This kind of up and down shaking will cause concern to passengers, who will think that there is a problem with the elevator.

[0003] In order to suppress such shaking, generally, a car damping device (Car Damping Device), abbreviated as CDD, is configured on the elevator car. The traditional car damping device generates a clamping force acting on the car guide rail through a complex electromechanical device at the position where the car is leveled, so as to apply a clamping force to the elevator car. In this way, the car damping device can attenuate the vibration of the elevator car, thereby improving the comfort of passengers. However, due to the need for guide rail oil lubrication for sliding guide shoes, the friction force generated by the CDD clamping force is generally small and is not sufficient to overcome the weight when passengers enter and exit the elevator car. Therefore, the elevator car still moves up and down when passengers enter and exit the elevator car. In order to increase the clamping force in such cases, a larger electromechanical device is required, which leads to an increase in the cost of the car damping device, increases the difficulty of layout and the impact on the hoistway space. Since the working rate of the traditional CDD is 100%, that is, the CDD will act when the elevator stops at any floor, the surface of the clamping component of the CDD in contact with the guide rail rubs repeatedly, resulting in a reduction in the life of the clamping component; in addition, due to the high number of actions of the CDD, the service lives of the mechanical components and electrical components of the CDD will also be affected. Summary of the Invention

[0004] To solve the above problems in the prior art, an embodiment of the present invention provides a damping device for an elevator car and an elevator system having the same, and the damping device has the advantages of large friction force, long life, simple structure and low cost.

[0005] One aspect of the present invention provides a damping device for an elevator car, including a moving member and a plurality of fixed members. The moving member is movably disposed on the elevator car; the plurality of fixed members are respectively disposed at a plurality of leveling positions of an elevator hoistway. Each fixed member is an elastic damping member, and each damping member has a damping space with at least one open side. The damping space includes a first space and a second space communicating with the first space. When the elevator car stops at a predetermined stop position on a certain leveling floor, the moving member moves to the opening of the damping member and extends into the first space. And when the elevator car parked on a certain leveling floor moves upward or downward relative to the predetermined stop position by a predetermined distance, the moving member enters the second space and frictionally cooperates with the inner wall of the second space to reduce the up-and-down shaking of the elevator car when passengers get in and out.

[0006] For the damping device for an elevator car according to an embodiment of the present invention, by cooperating the moving member provided on the elevator car with the fixed members provided at the leveling positions. Specifically, after the elevator car stops at a predetermined position, the moving member can move to the opening of the damping member and extend into the first space. When the elevator car moves upward or downward relative to the predetermined stop position by a predetermined distance, the moving member enters the second space from the first space and frictionally cooperates with the inner wall of the second space. Compared with the prior art, in the present invention, the friction between the moving member and the inner wall of the second space can make there be a frictional force between the moving member and the fixed members, so that the fixed members can hinder the upward or downward movement of the moving member, and thus hinder the movement of the elevator car, thereby reducing the up-and-down shaking of the elevator car when passengers get in and out.

[0007] In addition, there may be a gap between the moving member of the present invention and the inner wall of the first space. Thus, the moving member only frictionally contacts with the inner wall of the second space when the elevator car moves upward or downward relative to the predetermined stop position by a predetermined distance. Therefore, compared with the prior art, the moving member and the fixed members are not always in repeated friction, so the damping device of the present invention has a longer service life.

[0008] In some embodiments, the fixed member includes: a first damping member; and a second damping member, the second damping member is connected to and spaced apart from the first damping member to form the damping space between the second damping member and the first damping member.

[0009] In some embodiments, the opposite partial wall surfaces of the first damping member and the second damping member are recessed to form the first space.

[0010] In some embodiments, the opposite partial wall surfaces in the middle of the first damping member and the second damping member are recessed to form the first space, and the partial wall surfaces at both ends of the first damping member and the second damping member are opposite to each other to respectively form two second spaces located at both ends of the first space.

[0011] In some embodiments, at both ends of the first damping member and the second damping member in the extending direction, each end of the first damping member is spaced apart from the corresponding end of the second damping member by a distance L, respectively forming openings of the two second spaces, and the distance L is greater than or equal to the diameter of the part of the moving member extending into the damping space.

[0012] In some embodiments, the first damping member and the second damping member are connected by a first connecting member, and the first connecting member is arranged at multiple leveling positions of the elevator hoistway.

[0013] In some embodiments, the predetermined distance is greater than 0 and less than 40 mm.

[0014] In some embodiments, the predetermined distance is greater than 1 mm and less than 10 mm.

[0015] In some embodiments, the damping device for the elevator car further includes a fixed seat, the fixed seat is fixed to the elevator car, and the moving member is movably arranged on the fixed seat.

[0016] In some embodiments, the moving member includes: a moving part, the moving part is movably arranged on the fixed seat; and a transmission part, the transmission part is located at the door position of the elevator car, and is adapted to drive the transmission part to move when the door is opened, and the transmission part is connected to the moving part to drive the moving part to move.

[0017] In some embodiments, the fixed seat has a moving round hole, the moving part is cylindrical and movably arranged in the moving round hole.

[0018] In some embodiments, the damping device for the elevator car further includes an elastic member, and the elastic member is arranged between the transmission part and the fixed seat.

[0019] In some embodiments, the damping device for the elevator car further includes a guiding member, the guiding member is connected between the transmission part and the fixed seat, and the elastic member is sleeved on the guiding member.

[0020] In some embodiments, there are two guiding members, the two guiding members are respectively located at both ends of the transmission part, and each guiding member is sleeved with an elastic member.

[0021] In some embodiments, the damping device for the elevator car further includes a second connecting member, and the second connecting member is connected between the fixed seat and the elevator car.

[0022] Another aspect of the present invention provides an elevator system, including an elevator car and a damping device for the elevator car as described above. A plurality of fixing members of the damping device for the elevator car are only provided at each floor below or equal to a predetermined floor N, and no fixing members are provided at each floor above the predetermined floor N, so that when the floor where the elevator car stops is higher than the predetermined floor N, the damping device for the elevator car does not exert a damping effect on the elevator car.

[0023] In the elevator system according to an embodiment of the present invention, by matching the moving member provided on the elevator car with the fixing member provided at the leveling position, specifically, after the elevator car stops at a predetermined position, the moving member can move to the opening of the damping member and extend into the first space. When the distance that the elevator car moves upward or downward relative to the predetermined stopping position reaches a predetermined distance, the moving member enters the second space from the first space and frictionally cooperates with the inner wall of the second space. Compared with the prior art, in the present invention, by the friction between the moving member and the inner wall of the second space, a frictional force can be generated between the moving member and the fixing member, so that the fixing member can hinder the upward or downward movement of the moving member, and further hinder the movement of the elevator car, thereby reducing the up and down shaking of the elevator car when passengers get on and off.

[0024] In addition, there may be a gap between the moving member of the present invention and the inner wall of the first space, so that the moving member only frictions with the inner wall of the second space when the distance that the elevator car moves upward or downward relative to the predetermined stopping position reaches a predetermined distance. Therefore, compared with the prior art, the moving member and the fixing member are not always in repeated friction, so the damping device of the present invention has a longer service life.

[0025] In some embodiments, when the elevator car is located at the predetermined floor N or a floor below the predetermined floor N, the elongation dL of the car-side hoisting rope under a predetermined tension F is greater than a predetermined elongation ΔL; when the elevator car is located at a floor above the predetermined floor N, the elongation dL of the car-side hoisting rope under the predetermined tension F is not greater than the predetermined elongation ΔL.

[0026] In some embodiments, the elongation dL of the car-side hoisting rope under a predetermined tension F when the elevator car is located at a certain floor is calculated according to the following formula:

[0027] dL = (LF) / (knES) where,

[0028] E is the elastic modulus of the car-side hoisting rope;

[0029] S is the cross-sectional area of the metal of the car-side hoisting rope;

[0030] L is the original length of the car-side hoisting rope when the elevator car is located at a certain floor;

[0031] n is the number of hoisting ropes on the car side;

[0032] k is the hoisting ratio.

[0033] In some embodiments, the elastic modulus E of the hoisting ropes on the car side and the area S of the metal cross-section of the hoisting ropes on the car side are known parameters; the original length L of the hoisting ropes on the car side is estimated as the distance between the elevator car and the hoisting wheel of the elevator system.

[0034] In some embodiments, when the predetermined tensile force F is 75 Kg, the predetermined elongation ΔL can be set to any value in the range of 1 to 5 mm.

[0035] In some embodiments, when the predetermined tensile force F is 75 Kg, the predetermined elongation ΔL is set to 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To more fully understand the present invention and its advantages, reference will now be made to the following description taken in conjunction with the accompanying drawings, in which:

[0038] Figure 1 is a schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an inoperative state;

[0039] Figure 2 is a cross-sectional schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an inoperative state;

[0040] Figure 3 is a schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an operative state;

[0041] Figure 4 is a cross-sectional schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an operative state;

[0042] Figure 5 is a schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an inoperative state;

[0043] Figure 6 is a cross-sectional schematic diagram of an elevator system according to an embodiment of the present invention, in which the damping device is in an inoperative state;

[0044] Figure 7It is a schematic diagram of an elevator system according to an embodiment of the present invention.

[0045] Reference numerals:

[0046] Elevator system 1000, elevator car 200, door body 201, sill 202, crossbeam 203, elevator hoistway 300, inner wall of the hoistway 301, car-side hoisting ropes 400, hoisting wheel 500,

[0047] Damping device 100,

[0048] Moving member 1, moving part 11, transmission part 12,

[0049] Fixed member 2,

[0050] Damping space 21, first space 211, second space 212,

[0051] First damping member 22, second damping member 23,

[0052] First connecting member 3, fixed seat 4, moving circular hole 41, positioning part 42,

[0053] Elastic member 5, guiding member 6, second connecting member 7, positioning member 8. Detailed implementation manners

[0054] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention. Additionally, the various embodiments provided herein and the technical features in the embodiments can be combined with each other in any manner.

[0055] The terms used herein are merely for describing specific embodiments and are not intended to limit the present invention. In addition, the terms "including", "comprising", etc. as used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components. All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0056] Next, refer to Figures 1 - 7 Describe the damping device 100 for the elevator car 200 and the elevator system 1000 according to an embodiment of the present invention.

[0057] As Figures 1 - 4As shown, a damping device 100 for an elevator car 200 according to an embodiment of the present invention includes a moving part 1 and a plurality of fixed parts 2.

[0058] Specifically, refer to Figures 1 - 4 , a moving member 1 is movably arranged on the elevator car 200; a plurality of fixed members 2 are respectively arranged at a plurality of levels of the elevator shaft 300, each fixed member 2 is an elastic damping member, each damping member has a damping space 21 with at least one side opening, and the damping space 21 includes a first space 211 and a second space 212 connected to the first space 211. When the elevator car 200 stops at a predetermined stop position at a certain level, the moving member 1 moves to the opening of the damping member and extends into the first space 211, and when the elevator car 200 stopped at a certain level moves up or down relative to the predetermined stop position to a predetermined distance, the moving member 1 enters the second space 212 and frictionally cooperates with the inner wall of the second space 212 to reduce the up and down shaking of the elevator car 200 when passengers enter and exit.

[0059] Among them, the level floor can be understood as the position where passengers get on and off the elevator car 200. During the operation of the elevator car 200, in order to pick up and drop off passengers, the elevator car 200 needs to stop at the level floor. The position of the elevator car 200 after the elevator car 200 stops and before the door 201 of the elevator car 200 opens can be understood as the predetermined stopping position. In other words, after the elevator car 200 reaches a certain level and the speed drops to zero, but before the door 201 of the elevator car 200 opens, that is, before passengers get on and off the elevator car 200, the position of the elevator car 200 is the predetermined stopping position.

[0060] After the elevator car 200 stops at the predetermined position, the moving member 1 can move to the opening of the damping member and extend into the first space 211. At this time, the moving member 1 can contact the inner wall of the first space 211, and a gap can also be left between the moving member 1 and the inner wall of the first space 211. After the elevator car 200 stops and the door body 201 of the elevator car 200 is opened, there may be passengers getting on and off the elevator car 200. It is understandable that in the process of passengers leaving the elevator car 200, the elevator car 200 may move upwards; in the process of passengers entering the elevator car 200, the elevator car 200 may move downwards.

[0061] When the distance that the elevator car 200 moves upward or downward relative to the predetermined stopping position reaches a predetermined distance, the moving part 1 enters the second space 212 from the first space 211 and frictionally cooperates with the inner wall of the second space 212. As a result, the friction between the moving part 1 and the inner wall of the second space 212 can create friction between the moving part 1 and the fixed part 2, so that the fixed part 2 can hinder the moving part 1 from moving upward or downward. Since the moving part 1 is arranged on the elevator car 200, the fixed part 2 can indirectly hinder the movement of the elevator car 200, thereby reducing the up and down shaking of the elevator car 200 when passengers enter and exit.

[0062] It can be understood that the movable part 1 is movably arranged on the elevator car 200, so that after the elevator car 200 stops at a predetermined position, the movable part 1 can be moved to the opening of the damping part and extend into the first space 211; multiple fixed parts 2 are respectively arranged at multiple levels of the elevator shaft 300, which can be understood as a fixed part 2 is provided at each of the multiple levels, so that the fixed part 2 can cooperate with the movable part 1 at the level where the fixed part 2 is provided, so that the shaking of the elevator car 200 can be reduced when passengers get on and off the elevator car 200.

[0063] Wherein, each fixed member 2 is an elastic damping member, and each damping member has a damping space 21 with at least one side opening. Here, the damping space 21 of each damping member can be open on one side, thereby facilitating the moving member 1 to enter the damping space 21 from the opening; the damping space 21 of each damping member can also have openings on multiple sides, and the number of openings is not limited here. Further, the damping space 21 can include a first space 211 and a second space 212 connected to the first space 211, thereby facilitating the moving member 1 to enter the second space 212 from the first space 211. Since the damping member is elastic, while there is a damping effect between the moving member 1 and the fixed member 2, the moving member 1 can more easily enter the first space 211, and also more easily enter the second space 212 from the first space 211.

[0064] In the related art, due to its own elasticity, the elevator traction suspension device will elastically stretch when passengers enter and exit the elevator car, causing the elevator car to sink. In particular, when there is a large lifting height, the elastic extension of the elevator traction suspension device is relatively large, causing a large amount of sinking of the elevator car. In this way, when the elevator car is on the lower floor, the passengers enter and exit the elevator car, causing the elevator car to shake up and down very obviously. This up and down shaking will cause passengers to worry and think that there is something wrong with the elevator.

[0065] To suppress such shaking, generally, a car damping device (CDD) is configured on the elevator car. The traditional car damping device generates a clamping force on the car guide rail through a complex electromechanical device at the leveling position of the car, so as to apply a clamping force to the elevator car. In this way, the car damping device can attenuate the vibration of the elevator car, thereby improving the comfort of passengers. However, considering that the sliding guide shoes require guide rail oil lubrication, the friction force generated by the clamping force of the CDD is generally small and insufficient to overcome the weight of passengers when entering and leaving the elevator car. Therefore, the elevator car still moves up and down when passengers enter and leave the elevator car. To increase the clamping force in such cases, a larger electromechanical device is required, which leads to an increase in the cost of the car damping device, an increase in the difficulty of layout, and an impact on the hoistway space. Since the working rate of the traditional CDD is 100%, that is, the CDD will act when the elevator stops at any floor. In this way, the surface of the clamping component of the CDD in contact with the guide rail rubs repeatedly, resulting in a reduction in the service life of the clamping component. In addition, due to the high number of actions of the CDD, the service lives of the mechanical and electrical components of the CDD will also be affected.

[0066] According to the damping device 100 for an elevator car 200 in an embodiment of the present invention, by cooperating a moving member 1 provided on the elevator car 200 with a fixed member 2 provided at the leveling position. Specifically, after the elevator car 200 stops at a predetermined position, the moving member 1 can move to the opening of the damping member and extend into the first space 211. When the elevator car 200 moves upward or downward relative to the predetermined stop position by a predetermined distance, the moving member 1 enters the second space 212 from the first space 211 and frictionally cooperates with the inner wall of the second space 212. Compared with the prior art, in the present invention, by the friction between the moving member 1 and the inner wall of the second space 212, a frictional force can be generated between the moving member 1 and the fixed member 2, so that the fixed member 2 can hinder the upward or downward movement of the moving member 1, and further hinder the movement of the elevator car 200, thereby reducing the up and down shaking of the elevator car 200 when passengers enter and leave.

[0067] In addition, there may be a gap between the moving member 1 of the present invention and the inner wall of the first space 211. Therefore, when the elevator car 200 moves upward or downward relative to the predetermined stop position by a predetermined distance, it will only friction with the inner wall of the second space 212. Therefore, compared with the prior art, the moving member 1 and the fixed member 2 are not always in repeated friction, so the damping device 100 of the present invention has a longer service life.

[0068] In some embodiments of the present invention, such as Figure 1 and Figure 3As shown, the fixing member 2 may include a first damping member 22 and a second damping member 23. The second damping member 23 is connected to and spaced apart from the first damping member 22 to form a damping space 21 between the second damping member 23 and the first damping member 22. Thus, by providing two damping members: the first damping member 22 and the second damping member 23, and spacing the first damping member 22 and the second damping member 23 apart, it is convenient to form the damping space 21, so that the fixing member 2 has a damping effect on the moving member 1.

[0069] Of course, in some examples not shown in the drawings of the present invention, the fixing member 2 may also be a solid member. A groove or a through hole may be formed in the fixing member 2. The groove or the through hole formed in the fixing member 2 can be understood as the damping space 21. The moving member 1 can extend into the damping space 21 from the concave side of the groove or the opening side of the through hole to cooperate with the fixing member 2.

[0070] Of course, the fixing member 2 may also have other structures, and the damping space 21 may also have other setting methods. Here, only examples are given and it should not be construed as a limitation of the present invention. As long as the damping space 21 is provided on the fixing member 2, it falls within the protection scope of the present invention.

[0071] According to some embodiments of the present invention, as Figure 2 and Figure 3 shown, the opposite partial wall surfaces of the first damping member 22 and the second damping member 23 are recessed to form a first space 211. It should be noted that since the first damping member 22 and the second damping member 23 are spaced apart, the first damping member 22 and the second damping member 23 have opposite wall surfaces. The opposite partial wall surfaces being recessed can form the first space 211, and the other opposite non-recessed wall surfaces can form a second space 212. Thus, it is convenient to form the first space 211 and the second space 212 on the fixing member 2, and at the same time, the first space 211 and the second space 212 can be made to communicate.

[0072] Further, in combination with Figure 3 , the opposite partial wall surfaces in the middle of the first damping member 22 and the second damping member 23 are recessed to form a first space 211, and the partial wall surfaces at both ends of the first damping member 22 and the second damping member 23 are opposite to each other to respectively form two second spaces 212 located at both ends of the first space 211. Here, the middle of the first damping member 22 can be understood as the part between the two ends of the first damping member 22, and the middle of the second damping member 23 can be understood as the part between the two ends of the second damping member 23. The partial wall surfaces in the middle of the first damping member 22 and the partial wall surfaces in the middle of the second damping member 22 corresponding to the first damping member 22 are both recessed, so that the first space 211 can be formed in the middle of the first damping member 22 and the second damping member 23.

[0073] Among them, the partial wall surfaces at both ends of the first damping member 22 and the second damping member 23 are opposite to each other, which is convenient for forming second spaces 212 at both ends of the first space 211 respectively. Therefore, when the elevator car 200 moves upward, the moving member 1 can move upward from the first space 211 to the second space 212; when the elevator car 200 moves downward, the moving member 1 can move downward from the first space 211 to the second space 212.

[0074] According to some embodiments of the present invention, at both ends in the extending direction of the first damping member 22 and the second damping member 23, each end of the first damping member 22 is spaced apart from the corresponding end of the second damping member 23 by a distance L, forming openings of two second spaces 212 respectively, and the distance L is greater than or equal to the diameter of the part of the moving member 1 extending into the damping space 21. Thus, in the situation where the elevator fails, the door body 201 cannot be closed and the elevator car 200 needs to move upward or downward, the distance L being greater than or equal to the diameter of the part of the moving member 1 extending into the damping space 21 is convenient for the part of the moving member 1 extending into the damping space 21 to smoothly disengage from the damping space 21, thereby avoiding damage to the damping device 1000 caused by the door body 201 being unable to close and the elevator car 200 moving.

[0075] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the first damping member 22 and the second damping member 23 are connected by a first connecting member 3, and the first connecting member 3 is arranged at multiple leveling positions of the elevator hoistway 300. It can be understood that the first connecting member 3 is convenient for connecting the first damping member 22 and the second damping member 23 together, and further convenient for the first damping member 22 and the second damping member 23 to be arranged at intervals, so as to facilitate the formation of the damping space 21 between the first damping member 22 and the second damping member 23. The first connecting member 3 being arranged at multiple leveling positions of the elevator hoistway 300 enables the first damping member 22 and the second damping member 23 to be arranged at the position where the first connecting member 3 is arranged, so that at multiple leveling positions where the first connecting member 3 is arranged, the moving member 1 can cooperate with the damping member, and the damping member can hinder the upward or downward movement of the moving member 1, and further hinder the movement of the elevator car 200, thereby reducing the up and down shaking of the elevator car 200 when passengers get in and out.

[0076] Furthermore, the first connecting member 3 and the inner wall 301 of the elevator hoistway 300 can be connected by fasteners. For example, the fasteners can be bolts, screws or pin posts, etc.; the first connecting member 3 and the inner wall 301 of the elevator hoistway 300 can also be connected by welding. Here, the connection method of the first connecting member 3 and the elevator hoistway 300 is not specifically limited.

[0077] According to some embodiments of the present invention, as Figures 1 - 4As shown, the predetermined distance is greater than 0 and less than 40 mm. As can be seen from the foregoing, there may be a gap between the moving member 1 of the present invention and the inner wall of the first space 211. Thus, when the elevator car 200 moves upward or downward relative to the predetermined docking position by a distance reaching the predetermined distance, it will rub against the inner wall of the second space 212. The predetermined distance being greater than 0 and less than 40 mm can ensure that without affecting the comfort of passengers during small-amplitude shaking, the moving member 1 and the fixed member 2 will not always be in repeated friction, thereby increasing the service life of the damping device 100.

[0078] Preferably, the predetermined distance may be greater than 1 mm and less than 10 mm.

[0079] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the damping device 100 further includes a fixed seat 4. The fixed seat 4 is fixed to the elevator car 200, and the moving member 1 is movably disposed on the fixed seat 4. In the example as Figure 1 shown, the fixed seat 4 can be fixed on the sill 202 of the elevator car 200; in other examples as Figure 5 and Figure 6 shown, the fixed seat 4 can also be fixed on the cross beam 203 of the elevator car 200; of course, the fixed seat 4 can also be disposed on other components of the elevator car 200. Here, it is only for illustrative purposes and should not be construed as a limitation to the present invention.

[0080] Among them, the fixed seat 4 and the elevator car 200 can be connected by fasteners. For example, the fasteners can be bolts, screws or pin columns, etc.; the fixed seat 4 and the elevator car 200 can also be connected by welding. Here, the connection method between the fixed seat 4 and the elevator car 200 is not specifically limited.

[0081] Among them, the fixed seat 4 can provide support for the moving member 1. The moving member 1 being movably disposed on the fixed seat 4 can enable the moving member 1 to smoothly move to the opening of the damping member to extend into the first space 211 after the elevator car 200 reaches the leveling position.

[0082] In some specific examples, as Figure 1 shown, the damping device 100 further includes a second connecting member 7. The second connecting member 7 is connected between the fixed seat 4 and the elevator car 200. It can be understood that the shape of the second connecting member 7 can be selected and processed according to actual needs. Thus, the fixed seat 4 can be conveniently connected to the elevator car 200 through the second connecting member 7. Here, in the example as Figure 1In the illustrated example, the second connecting member 7 can be connected to the sill 202 of the elevator car 200; in some other examples not shown in the drawings, the second connecting member 7 can also be connected to the car body of the elevator car 200; of course, the second connecting member 7 can also be provided on other components of the elevator car 200. This is only for illustrative purposes and should not be construed as a limitation of the present invention.

[0083] Wherein, the second connecting member 7 and the elevator car 200 can be connected by fasteners. For example, the fasteners can be bolts, screws or pin posts, etc.; the second connecting member 7 and the elevator car 200 can also be connected by welding. The connection manner between the second connecting member 7 and the elevator car 200 is not specifically limited herein.

[0084] Wherein, the second connecting member 7 and the fixed seat 4 can be connected by fasteners. For example, the fasteners can be bolts, screws or pin posts, etc.; the second connecting member 7 and the fixed seat 4 can also be connected by welding. The connection manner between the second connecting member 7 and the fixed seat 4 is not specifically limited herein.

[0085] According to some embodiments of the present invention, as Figures 1 - 4 shown, the moving member 1 includes a moving part 11 and a transmission part 12. The moving part 11 is movably arranged on the fixed seat 4; the transmission part 12 is located at the position of the door 201 of the elevator car 200. When the door 201 is opened, it is adapted to drive the transmission part 12 to move. The transmission part 12 is connected to the moving part 11 to drive the moving part 11 to move. It can be understood that the transmission part 12 being located at the position of the door 201 facilitates driving the transmission part 12 to move when the door 201 is opened. Since the transmission part 12 is connected to the moving part 11, the transmission part 12 can drive the moving part 11 to move, and thus it is convenient to realize that the moving member 1 is movably arranged on the fixed seat 4.

[0086] Of course, the driving manner of the transmission part 12 is not limited thereto. The damping device 100 can also include a driving member, and the driving member can be a motor, a cylinder, a hydraulic press, etc., but is not limited thereto. The driving member can be connected to the transmission part 12 to drive the transmission part 12 to move.

[0087] Furthermore, in combination with Figure 4 , the fixed seat 4 can have a moving round hole 41, and the moving part 11 is cylindrical and movably arranged in the moving round hole 41. Thus, through the moving round hole 41 and the cylindrical moving part 11, it is convenient for the moving part 11 to move in the fixed seat 4. Of course, the moving part 11 can also be a triangular prism, a quadrangular prism, a pentagonal prism, etc., and the fixed seat 4 can also have holes corresponding to the triangular prism, quadrangular prism, pentagonal prism, etc. The shape of the hole on the fixed seat 4 and the shape of the moving part 11 are not overly limited herein.

[0088] In some embodiments of the present invention, as Figure 1 and Figure 2As shown, the damping device 100 further includes an elastic member 5, and the elastic member 5 is disposed between the transmission part 12 and the fixed seat 4. It can be understood that one end of the elastic member 5 can abut against the transmission part 12, and the other end of the elastic member 5 can abut against the fixed seat 4. Thus, when the door body 201 of the elevator car 200 is opened, the transmission part 12 is driven to move. While the transmission part 12 pushes the moving part 11, it also pushes the elastic member 5 to undergo elastic deformation. After the door body 201 of the elevator car 200 is closed, the elastic member 5 drives the transmission part 12 to reset, and the transmission part 12 drives the moving part 11 to extend out of the damping space 21. For example, the elastic member 5 can be a spring, and this spring can be a helical spring; the elastic member 5 can also include an elastic block made of an elastic material.

[0089] According to some embodiments of the present invention, as Figure 2 and Figure 4 shown, the damping device 100 further includes a guide member 6, and the guide member 6 is connected between the transmission part 12 and the fixed seat 4, and the elastic member 5 is sleeved on the guide member 6. Thus, the guide member 6 can provide guidance for the elastic member 5, facilitating the elastic deformation of the elastic member 5 between the transmission part 12 and the fixed seat 4.

[0090] Further, referring to Figure 2 and Figure 4 , there can be two guide members 6, and the two guide members 6 are respectively located at both ends of the transmission part 12, and each guide member 6 is sleeved with an elastic member 5. Thus, the two guide members 6 can respectively provide guidance for an elastic member 5, facilitating the arrangement of an elastic member 5 at both ends of the transmission part 12, making the thrust of the elastic member 5 on the transmission part 12 uniform, thereby avoiding the transmission part 12 being eccentric due to the thrust only at one end.

[0091] In some specific examples, in combination with Figure 1 and Figure 2 , the extending direction of the transmission part 12 is perpendicular to that of the moving part 11. In the extending direction of the transmission part 12, both ends of the transmission part 12 protrude from the moving part 11 respectively. One end of each of the two guide members 6 abuts against the part of the transmission part 12 that protrudes from the moving part 11. Therefore, the fact that both ends of the transmission part 12 protrude from the moving part 11 respectively can facilitate the arrangement of the guide member 6 and the elastic member 5 between the transmission part 12 and the fixed seat 4.

[0092] Further, one end of each guide member 6 can be embedded in the part of the corresponding transmission part 12 that protrudes from the moving part 11, and each guide member 6 is movably disposed in the fixed seat 4. Specifically, the fixed seat 4 has two positioning parts 42, through holes are formed in each positioning part 42, the other end of each guide member 6 passes through the through hole, and positioning members 8 are respectively provided at the other end of each guide member 6. The elastic member 5 is sleeved on the guide member 6 and one end abuts against the part of the transmission part 12 that protrudes from the moving part 11, and the other end abuts against the positioning part 42.

[0093] It can be understood that the transmission part 12 can drive the moving part 11 to move toward the damping part while driving the guide part 6 to move, and drive the elastic part 5 to undergo elastic deformation. When the driving force applied to the transmission part 12 disappears, the elastic part 5 drives the transmission part 12 to move away from the damping part to restore the deformation. The transmission part 12 drives the moving part 11 and the guide part 6 to move away from the damping part. At this time, the moving part 11 can extend out of the damping space 21, thereby facilitating the moving part 1 to move with the elevator car 200 in the hoistway to move to the next level to be reached. When the guide part 6 moves to a certain limit with the transmission part 12 in the direction away from the damping part, the positioning part 8 stops with the positioning part 42 of the fixed seat 4, thereby preventing the moving part 1 from escaping from the fixed seat 4 and causing damage to the damping device 100.

[0094] like Figure 7 As shown, the elevator system 1000 according to the embodiment of the present invention includes an elevator car 200 and a damping device 100 for the elevator car 200 as described above. A plurality of fixing members 2 of the damping device 100 for the elevator car 200 are only arranged at each floor lower than or equal to a predetermined floor N (N is an integer greater than 1), and no fixing members 2 are arranged at each floor higher than the predetermined floor N, so that when the floor where the elevator car 200 stops is higher than the predetermined floor N, the damping device 100 for the elevator car 200 will not produce a damping effect on the elevator car 200. The reason for such arrangement is that at a high floor (higher than the predetermined floor N), the up and down shaking amount of the elevator car 200 when passengers enter and exit is small, and will not cause discomfort to passengers, so there is no need to reduce the up and down shaking of the elevator car 200.

[0095] According to the elevator system 1000 of the embodiment of the present invention, by matching the moving part 1 provided on the elevator car 200 with the fixed part 2 provided at the leveling, specifically, after the elevator car 200 stops at the predetermined position, the moving part 1 can move to the opening of the damping member and extend into the first space 211, when the distance the elevator car 200 moves upward or downward relative to the predetermined stopping position reaches a predetermined distance, the moving part 1 enters the second space 212 from the first space 211 and frictionally matches with the inner wall of the second space 212. Compared with the prior art, the present invention can make the moving part 1 and the fixed part 2 have friction through the friction between the moving part 1 and the inner wall of the second space 212, so that the fixed part 2 can hinder the moving part 1 from moving upward or downward, and then hinder the movement of the elevator car 200, thereby reducing the up and down shaking of the elevator car 200 when passengers enter and exit.

[0096] In addition, there may be a gap between the moving member 1 of the present invention and the inner wall of the first space 211, so that the elevator car 200 rubs against the inner wall of the second space 212 only when the distance of upward or downward movement relative to the predetermined docking position reaches a predetermined distance. Therefore, compared with the prior art, the moving member 1 and the fixed member 2 are not always in repeated friction, so that the damping device 100 of the present invention has a longer service life.

[0097] In some embodiments of the present invention, as Figure 7 shown, when the elevator car 200 is located at the predetermined floor N or a floor lower than the predetermined floor N, the elongation dL of the car-side hoisting rope 400 under the predetermined tension F is not greater than the predetermined elongation ΔL. When the elevator car 200 is located at a floor higher than the predetermined floor N, the elongation dL of the car-side hoisting rope 400 under the predetermined tension F is greater than the predetermined elongation ΔL. In this way, a suitable predetermined floor N can be selected according to the elongation dL of the car-side hoisting rope 400 to reduce the number of fixed members 2 provided.

[0098] In some embodiments of the present invention, in combination with Figure 7 , the elongation dL of the car-side hoisting rope 400 under the predetermined tension F when the elevator car 200 is located on a certain floor is calculated according to the following formula: dL = (LF) / (knES). Wherein, E is the elastic modulus of the car-side hoisting rope 400; S is the cross-sectional area of the metal of the car-side hoisting rope 400; L is the original length of the car-side hoisting rope 400 when the elevator car 200 is located on a certain floor; n is the number of car-side hoisting ropes 400; k is the hoisting ratio.

[0099] Furthermore, the elastic modulus E of the car-side hoisting rope 400 and the cross-sectional area S of the metal of the car-side hoisting rope 400 are known parameters; the original length L of the car-side hoisting rope 400 is estimated as the distance between the elevator car 200 and the hoisting wheel 500 of the elevator system 1000.

[0100] Optionally, when the predetermined tension F is 75 Kg, the predetermined elongation ΔL can be set to any value in the range of 1 to 5 mm.

[0101] Optionally, when the predetermined tension F is 75 Kg, the predetermined elongation ΔL is set to 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

[0102] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0103] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0105] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

[0106] Those skilled in the art can understand that the features recited in the various embodiments and / or claims of the present invention can be combined or combined in various ways, even if such combinations or combinations are not explicitly recited in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features recited in the various embodiments and / or claims of the present invention can be combined and combined in various ways. All such combinations and / or combinations fall within the scope of the present invention.

[0107] Although the present invention has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A damping device for an elevator car, characterized in that, Comprising: A moving member movably disposed on the elevator car; And A plurality of fixing members respectively disposed at a plurality of leveling positions of the elevator hoistway. Each of the fixing members is an elastic damping member. Each damping member has a damping space with at least one open side. The damping space includes a first space and a second space communicating with the first space. When the elevator car stops at a predetermined stop position on a certain leveling floor, the moving member moves to the opening of the damping member and extends into the first space. And when the elevator car parked on a certain leveling floor moves up or down relative to the predetermined stop position by a predetermined distance, the moving member enters the second space and frictionally cooperates with the inner wall of the second space to reduce the up and down shaking of the elevator car when passengers get in and out.

2. The damping device for an elevator car according to claim 1, characterized in that, The fixing member includes: A first damping member; and A second damping member connected to and spaced apart from the first damping member to form the damping space between the second damping member and the first damping member.

3. The damping device for an elevator car according to claim 2, characterized in that, The relatively facing partial wall surfaces of the first damping member and the second damping member are recessed to form the first space.

4. The damping device for an elevator car according to claim 3, characterized in that, The relatively facing partial wall surfaces in the middle of the first damping member and the second damping member are recessed to form the first space. The relatively facing partial wall surfaces at both ends of the first damping member and the second damping member respectively form two second spaces located at both ends of the first space.

5. The damping device for an elevator car according to claim 4, characterized in that, At both ends of the first damping member and the second damping member in the extending direction, each end of the first damping member is spaced apart from the corresponding end of the second damping member by a distance L to respectively form openings of the two second spaces. The distance L is greater than or equal to the diameter of the part of the moving member extending into the damping space.

6. The damping device for an elevator car according to claim 2, characterized in that, The first damping member and the second damping member are connected by a first connecting member disposed at a plurality of leveling positions of the elevator hoistway.

7. The damping device for an elevator car according to claim 1, characterized in that, The predetermined distance is greater than 0 and less than 40 mm.

8. The damping device for an elevator car according to claim 1, characterized in that, The predetermined distance is greater than 1 mm and less than 10 mm.

9. The damping device for an elevator car according to any one of claims 1-8, characterized in that, Further comprising: A fixing seat fixed to the elevator car, and the moving member is movably disposed on the fixing seat.

10. The damping device for an elevator car according to claim 9, characterized in that, The moving member includes: A moving part movably disposed on the fixing seat; and A transmission part located at the position of the door body of the elevator car. When the door body is opened, it is adapted to drive the transmission part to move. The transmission part is connected to the moving part to drive the moving part to move.

11. The damping device for an elevator car according to claim 10, characterized in that, The fixing seat has a moving round hole, and the moving part is cylindrical and movably disposed in the moving round hole.

12. The damping device for an elevator car according to claim 10, characterized in that, Further comprising: An elastic member disposed between the transmission part and the fixing seat.

13. The damping device for an elevator car according to claim 12, characterized in that, Further comprising: A guiding member connected between the transmission part and the fixing seat, and the elastic member is sleeved on the guiding member.

14. The damping device for an elevator car according to claim 13, characterized in that, There are two guiding members, and the two guiding members are respectively located at both ends of the transmission part. Each guiding member is sleeved with an elastic member.

15. The damping device for an elevator car according to claim 9, characterized in that, Further comprising: A second connecting member connected between the fixing seat and the elevator car.

16. An elevator system, comprising: An elevator car; And A damping device for an elevator car according to any one of claims 1-15, characterized in that a plurality of fixing members of the damping device for the elevator car are only provided at each floor below or equal to a predetermined floor N, and no fixing members are provided at each floor above the predetermined floor N, so that when the floor where the elevator car stops is higher than the predetermined floor N, the damping device for the elevator car does not exert a damping effect on the elevator car.

17. The elevator system according to claim 16, characterized in that, when the elevator car is at the predetermined floor N or a floor below the predetermined floor N, the elongation dL of the car-side hoisting rope under a predetermined tension F is greater than a predetermined elongation ΔL; when the elevator car is at a floor above the predetermined floor N, the elongation dL of the car-side hoisting rope under the predetermined tension F is not greater than the predetermined elongation ΔL.

18. The elevator system according to claim 17, characterized in that, the elongation dL of the car-side hoisting rope under a predetermined tension F when the elevator car is at a certain floor is calculated according to the following formula: dL=(LF) / (knES) where, E is the elastic modulus of the car-side hoisting rope; S is the area of the metal cross-section of the car-side hoisting rope; L is the original length of the car-side hoisting rope when the elevator car is at a certain floor; n is the number of car-side hoisting ropes; k is the winding ratio.

19. The elevator system according to claim 18, characterized in that, the elastic modulus E of the car-side hoisting rope and the area S of the metal cross-section of the car-side hoisting rope are known parameters; the original length L of the car-side hoisting rope is estimated as the distance between the elevator car and the traction sheave of the elevator system.

20. The elevator system according to claim 18, wherein, When the predetermined tension F is 75 Kg, the predetermined elongation ΔL can be set to any value in the range of 1 to 5 mm.

21. The elevator system according to claim 18, characterized in that, When the predetermined tension F is 75 Kg, the predetermined elongation ΔL is set to 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

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