Shake suppression device for flexible body of elevator

Abstract

The invention discloses an elevator flexible body shaking restraining device which comprises a mass body, a driving component and a first controller. The driving part is fixed on the mass body and drives the mass body to slide up and down along the flexible body in the hoistway; the first controller controls the driving component, so that the mass body is located at the intersection of the shaking area and the safety area of the elevator flexible body. The shaking area refers to the part, deviating from the static position where the elevator flexible body does not shake due to shaking, in the elevator flexible body, and the safety area refers to the part, larger than a preset safety distance from the end of the elevator flexible body and the elevator component in direct contact with the elevator flexible body, in the elevator flexible body. The shaking restraining device for the flexible body of the elevator can move to the shaking area on the flexible body, dynamically adapts to the changing shaking area in the running process of the elevator, and obtains a better shaking restraining effect.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a device for suppressing sway of a flexible body of an elevator. Background Art

[0002] During the operation of the elevator, the building will sway to a certain extent due to earthquakes or strong winds. The swaying of the building, or the airflow in the shaft, will cause the elevator flexible body (such as the steel wire rope / belt, compensation chain, accompanying cable, etc. that suspends the elevator car, collectively referred to as the flexible body) to sway to a certain extent in the horizontal direction. The swaying of the flexible body may cause damage to the flexible body itself or the object being collided due to collision or entanglement with equipment in the shaft, and may even endanger the safety of the elevator operation. Therefore, it is necessary to monitor and suppress the swaying of the elevator flexible body.

[0003] At present, a common way to suppress the sway of the elevator flexible body is to detect the sway of the flexible body, and then the controller controls the actuator according to the detection result to suppress the sway of the flexible body. For example:

[0004] Document 1 (CN201980101833.8) provides a cable body vibration reduction device, which can suppress the displacement instability of the cable body of the elevator by a negative restoring force that amplifies the displacement. The vibration reduction device (21) has a first displacement measuring unit, a first displacement amplifier and a control unit (24). The first displacement measuring unit measures the lateral displacement of the cable body centered on the equilibrium position (20) at the first position (P1) in the length direction of the cable body of the elevator (1). The first displacement amplifier applies a negative restoring force that amplifies the displacement of the cable body to the cable body. The control unit (24) causes the first displacement amplifier to apply a negative restoring force that is smaller than the positive restoring force based on the displacement measured by the first displacement measuring unit. The positive restoring force is a force that returns the cable body to the equilibrium position (20).

[0005] The elevator system provided in document 2 (CN201080068334.2) includes: a first mass that can move in a hoistway; a second mass that can move in the hoistway; a plurality of elongated members that couple the first mass to the second mass; at least one damper that selectively contacts at least one of the elongated members in response to lateral movement of at least one of the elongated members; a sensor that detects contact between the damper and the at least one of the elongated members, wherein the sensor provides a detection of contact between the damper and the at least one of the elongated members. an indication of at least one characteristic of the hoistway; a controller that controls at least one aspect of elevator system operation in response to the detected contact, wherein the controller selects the at least one aspect of elevator system operation for adjustment based on the magnitude of the indication from the sensor, the at least one aspect comprising at least one of: limiting the length of elevator travel to an upper or lower landing of the hoistway; causing an elevator car to move to a designated location within the hoistway that is considered a favorable location during a sway condition; causing the elevator car to go to the nearest landing and causing a door of the elevator car to open to allow passengers to exit the elevator car.

[0006] The shock absorbing devices or dampers configured in the above-mentioned prior art solutions are all arranged near the restraining parts of the flexible body, such as the parts near the driving wheel or the anti-ropes wheel of the flexible body. However, the parts where the flexible body shakes more are mostly located in the middle part between the restraining parts at both ends of the flexible body, and the parts vary with the position of the car. Therefore, the above-mentioned prior art solutions have limited effect on suppressing the shaking of the flexible body, especially for elevators with long flexible bodies and high lifting heights.

[0007] Therefore, how to provide a technical solution for suppressing the swaying of the elevator flexible body, which can dynamically adapt to the changes in the swaying position of the flexible body when the car is in different positions, becomes a technical problem to be solved. Summary of the invention

[0008] In order to solve the above technical problems, the present invention discloses a device for suppressing sway of an elevator flexible body, comprising a mass body, a driving component and a first controller; the driving component is fixed on the mass body, driving the mass body to slide up and down along the flexible body in the hoistway; the first controller controls the driving component so that the mass body is located at the intersection of a swaying area and a safety area of ​​the elevator flexible body; the swaying area refers to a part of the elevator flexible body that deviates from a static position when not swaying due to swaying, and the safety area refers to a part of the elevator flexible body that is greater than a preset safety distance from the end of the elevator flexible body and the elevator components that are in direct contact with the elevator flexible body.

[0009] Preferably, the first controller controls the driving component according to the following rule: when the mass body moves away from the static position of the elevator flexible body when the elevator flexible body is not shaking together with the elevator flexible body, the first controller controls the driving component so that the mass body slides toward the point of the maximum shaking amplitude of the elevator flexible body; when the mass body moves close to the static position of the elevator flexible body together with the elevator flexible body, the first controller controls the driving component so that the mass body slides away from the point of the maximum shaking amplitude of the elevator flexible body.

[0010] Preferably, the ratio α of the linear density of the sway suppression device in the length direction of the flexible body to the linear density of the elevator flexible body satisfies min≤α≤max, or the ratio β of the mass of the sway suppression device to the mass of the flexible body of a preset length satisfies min≤β≤max, wherein min and max are both positive real numbers; the preset length refers to the effective length of the sway suppression device to limit the bending deformation of the flexible body.

[0011] Preferably, the driving component includes a first clamping member and a second clamping member, the first clamping member and the second clamping member respectively have a first edge and a second edge, and when the first edge and the second edge are combined, a middle hole is formed, and the shape of the middle hole matches the cross-sectional shape of the elevator flexible body, so that when the first clamping member and the second clamping member are close to each other in such a way that the first edge and the second edge relatively form the middle hole, the middle hole can accommodate the elevator flexible body.

[0012] Preferably, the driving component also includes an elastic member, which is respectively connected to the first clamping member and the second clamping member, and makes the pressure applied by the first clamping member and the second clamping member to the elevator flexible body not less than a pressure threshold, and the friction coefficient between the contact part of the first clamping member and the second clamping member and the flexible body is such that, when the pressure is not less than the pressure threshold, there is only rolling friction but no sliding friction between the first clamping member and the second clamping member and the flexible body.

[0013] Preferably, the first pressing member and the second pressing member are cylindrical rollers, and the shape of one side of the cross section of the cylindrical roller through the straight line where the center of the cylindrical roller is located is half of the central hole.

[0014] Preferably, the first controller controls the sliding of the mass body by controlling the rolling of at least one of the first pressing member and the second pressing member.

[0015] Preferably, the swaying area is determined by utilizing the swaying information of the building and the elevator operation information according to a pre-established elevator flexible body swaying model.

[0016] Preferably, the sway suppression device further comprises: a sway detection component for detecting sway at the position of the mass body in the elevator flexible body; and the first controller controls the driving component according to the detection result of the sway detection component.

[0017] Preferably, the first controller controls the mass body so that the distance between the mass body and the maximum shaking position in the shaking area does not exceed a threshold.

[0018] Preferably, the method by which the first controller determines the maximum shaking position according to the detection result of the shaking detection component is:

[0019] Step A1, controlling the driving component to move a preset movement amount in a first direction;

[0020] Step A2, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A1 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the first maximum shaking position;

[0021] Step A3, controlling the driving component to move a preset movement amount in the second direction;

[0022] Step A4, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A3 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the second maximum shaking position;

[0023] Step A5, the one with the larger shaking between the first maximum shaking position and the second maximum shaking position is output as the maximum shaking position.

[0024] Preferably, the sway detection component is equipped with a distance measuring sensor, which determines the sway of the mass body in the elevator flexible body according to the measured distance between the sensor and the shaft wall.

[0025] Preferably, there are two ranging sensors, and the ranging directions are perpendicular to each other in the horizontal direction.

[0026] Preferably, the sway detection component has a sensor for measuring the deviation angle or posture of the mass body relative to the vertical direction, and the sway detection component determines the sway of the position of the mass body in the elevator flexible body according to the detection result of the sensor.

[0027] Preferably, the sway suppression device also includes a sway suppression component and a second controller, and the second controller controls the sway suppression component according to the detection result of the sway detection component, so that the air generates a force on the sway suppression component, and the force is used to suppress the sway of the elevator flexible body.

[0028] Preferably, the second controller determines the swaying direction and amplitude of the elevator flexible body according to the detection results of the swaying detection component, determines the direction and magnitude of the force required to suppress the swaying of the elevator flexible body, and controls the swaying suppression component accordingly to generate a force of the direction and magnitude required to suppress the swaying of the elevator flexible body.

[0029] Preferably, the second controller performs closed-loop control on the sway of the elevator flexible body with the sway amplitude of the elevator flexible body as the controlled quantity, that is, takes the expected sway amplitude of the elevator flexible body as the controllable input, calculates the difference between the expected sway amplitude of the elevator flexible body and the actual sway amplitude of the elevator flexible body, and sends the difference as input to the sway suppression component, which generates the control instructions required to suppress the actual sway amplitude of the elevator flexible body.

[0030] Preferably, the sway suppression component is a fan, and the second controller can change the air outlet direction of the fan by changing the rotation direction of the fan blades, thereby changing the direction of the force required to suppress the sway of the elevator flexible body.

[0031] Preferably, the sway suppression components include two components, and the directions of the forces generated by the components and required for suppressing the sway of the elevator flexible body are perpendicular to each other in the horizontal direction.

[0032] Preferably, the distance between the two sway suppression components in the vertical direction is not less than a distance threshold.

[0033] Preferably, the sway suppression device further comprises an energy storage device for providing required energy to energy-consuming components in the sway suppression device, and the energy storage device receives energy from the outside in a wired or wireless manner.

[0034] Preferably, when the charging condition is established, the first controller controls the sway suppression device to slide to the vicinity of the elevator car so as to receive charging from the elevator car.

[0035] Preferably, the charging condition includes: the remaining energy of the energy storage device is lower than a threshold value.

[0036] Preferably, the charging condition further includes: the shaking amplitude of the flexible body is smaller than a threshold value and / or there are no passengers in the car or the elevator is in an idle state.

[0037] Preferably, the sway suppression device also includes a communication unit for establishing communication between the sway suppression device and the elevator. When the charging condition is met or the sway suppression device has reached the charging position near the elevator car, communication between the elevator is established to start the wireless charging transmitter located in the elevator car to charge the wireless charging receiver located in the energy storage device of the sway suppression device.

[0038] Beneficial technical effects

[0039] Compared with the prior art, the elevator flexible body sway suppression device of the present invention can move to the sway area on the flexible body, dynamically adapt to the changing sway area during the operation of the elevator, and achieve better sway suppression effect; at the same time, the elevator flexible body sway suppression device of the present invention is attached to the flexible body, does not require an external bracket, and will not interfere with the operation of the car or counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The structure examples of two elevator systems in Embodiment 1 and the setting position examples of the elevator flexible body sway suppression device in Embodiment 1 in the elevator system;

[0041] Figure 2 This is a schematic structural diagram of an elevator flexible body sway suppression device according to Embodiment 2;

[0042] Figure 3 This is a schematic diagram of the structure of the elevator flexible body sway suppression device of Example 3. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention. It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0044] Example 1

[0045] This embodiment provides an elevator flexible body sway suppression device, comprising a mass body, a driving component and a first controller; the driving component is fixed to the mass body, driving the mass body to slide up and down along the flexible body in the hoistway;

[0046] The first controller controls the driving component so that the mass body is located at the intersection of the shaking area and the safety area of ​​the elevator flexible body; the shaking area refers to the part of the elevator flexible body that deviates from the static position when not shaking due to shaking, and the safety area refers to the part of the elevator flexible body that is greater than a preset safety distance from the end of the elevator flexible body and the elevator components that are in direct contact with the elevator flexible body.

[0047] When the elevator car (especially medium- and high-speed elevators with a large lifting height) moves up and down in the hoistway, and especially when the building where the elevator is located shakes due to factors such as strong winds, the flexible bodies in the elevator system (such as steel wire ropes used to suspend the car and counterweight, accompanying cables, compensating cables, etc.) will shake to varying degrees. The location, range and amplitude of the shaking are closely related to many factors such as the car position, car movement speed, airflow in the hoistway, and building shaking.

[0048] Figure 1 An exemplary two-elevator system is shown in FIG. Figure 1 In the elevator system shown in a, the upper part of the car 5 and the counterweight 6 are suspended on the driving wheel 8 and the guide wheel 10 through the suspension rope 3; the accompanying cable 4 is connected between the accompanying cable fixing device 7 for fixing the accompanying cable 4 on the shaft wall in the middle of the shaft and the car 5, and the accompanying cable 4 is used to transmit power and electrical signals; the lower part of the car 5 and the counterweight 6 is connected with a compensating cable 2, which is used to compensate for the mass difference between the suspension rope 3 on the car side and the counterweight side, and the compensating cable 2 is tensioned and guided by the tensioning wheel 9 (usually set in this way in medium and high-speed elevators). The suspension rope 3, the accompanying cable 4 and the compensating cable 2 are collectively referred to as a flexible body. Figure 1 The elevator system shown in b is Figure 1 The difference between the elevator system of a is that the compensating cable 2 sags naturally and is not tensioned by the tensioning wheel 9 (which is usually arranged in this way in low-speed elevators).

[0049] for Figure 1 As for the suspension rope 3 in a, its actual shaking may occur at any position and range of the part of the suspension rope 3 located between the driving wheel 8 and the car and the part located between the guide wheel 10 and the counterweight 6, that is, the shaking area can be a section of any length in the part located between the driving wheel 8 and the car and / or a section of any length in the part located between the guide wheel 10 and the counterweight 6. Therefore, its possible shaking area is the collection of the part of the suspension rope 3 located between the driving wheel 8 and the car and the part located between the guide wheel 10 and the counterweight 6; for the part of the suspension rope 3 located between the driving wheel 8 and the car, its safe area is the part of the suspension rope 3 located between the driving wheel 8 and the car and the part between the guide wheel 10 and the counterweight 6, after removing the section from the driving wheel 8 to the safe distance from the driving wheel 8 and the section from the car 5 to the safe distance from the car 5. Similarly, the safe area of ​​the part of the suspension rope 3 located between the guide wheel 10 and the counterweight 6 can be determined. Figure 1 The method for determining the possible swaying area and the safe area of ​​the compensation cable 2 in a is the same as Figure 1 The suspension rope 3 in a is the same.

[0050] for Figure 1For the compensating cable 2 in b, the actual shaking may occur at any position and range of the entire compensating cable 2 located under the counterweight and the car, that is, the shaking area can be a section of any length in the compensating cable 2 located between the counterweight 6 and the car 5. Therefore, the possible shaking area is the entire compensating cable 2 located between the counterweight 6 and the car 5; and the safe area is the remaining part after removing a section of a safety distance from each end of the compensating cable 2. Figure 1 The method for determining the possible swaying area and the safe area of ​​the accompanying cable 4 in b is the same as Figure 1 The compensating cable 2 in b is the same.

[0051] From the above analysis, it can be seen that the shaking area of ​​the actual shaking of the elevator flexible body must be a part of its possible shaking area. Theoretically, the intersection of the shaking area and the safety area may be empty or non-empty. The shaking area may (truly) contain the safety area, or the safety area may (truly) contain the shaking area.

[0052] Figure 1 c Figure 1 b is taken as an example to illustrate the installation position of the elevator flexible body sway suppression device 1 in the elevator. Figure 1 c indicates the approximate position of the possible swaying area. For example, the possible swaying area of ​​the suspension rope 3 in the entire elevator system can be divided into two areas, one is located between the car 5 and the driving wheel 8, and the other is located between the counterweight 6 and the guide wheel 10. The sway suppression device 1 is respectively arranged in these two possible swaying areas, and is used to suppress the swaying occurring in the respective possible swaying areas (note: the swaying area refers to the deviation of the flexible body from the static area of ​​the flexible body when there is no swaying caused by a certain actual swaying);

[0053] When there is no tensioning wheel 9, the actual swaying of the compensating cable 2 may occur at any position and range in the entire compensating cable 2 located at the bottom of the counterweight and the bottom of the car, that is, the swaying area can be a section of any length in the compensating cable 2 located between the counterweight 6 and the car 5, so its possible swaying area is the entire compensating cable 2 located between the counterweight 6 and the car 5. For a possible swaying area, one sway suppression device 1 can be set, and of course, multiple sway suppression devices 1 can also be set. However, if for a continuous swaying area, when multiple S-shaped sway bends may occur according to the sway model, in order to be able to suppress multiple sway bends at the same time, multiple sway suppression devices 1 can be set according to the number of multiple sway bends. The method for determining the possible swaying area of ​​the accompanying cable 4 is the same as that of the compensating cable 2, and the setting of the sway suppression device 1 is also the same as that of the compensating cable 2.

[0054] Figure 1c also shows the compensation cable 2 deviating from the static position when it is not swaying. At this time, the mass body of the sway suppression device 1 slides to the position with a larger sway amplitude.

[0055] In addition, corresponding sway suppression devices 1 can be provided on the two vertical parts of the accompanying cable and the compensating cable respectively, so as to suppress the sway in each vertical part respectively. In this case, the sway suppression device 1 is only responsible for suppressing the sway of the vertical part where it is located, and will not move from one vertical part to another vertical part.

[0056] From the above description, it can be seen that the sway suppression device has a certain mass. Under the action of gravity, when it sways with the flexible body and leaves the static position (horizontal direction) when there is no sway, it will play a damping role similar to that of a damper, thereby being able to suppress the sway of the flexible body.

[0057] Considering that the sway suppression device uses the damping effect generated by its own mass to suppress the sway of the flexible body, the mass of the sway suppression device needs to meet certain conditions. It is not difficult to understand that if the mass is too small, it is difficult to play a damping role, but if the mass is too large, it will bring higher requirements for the tensile strength and other properties of the flexible body (in addition, when the mass is too large, although there will be no swaying at the location of the sway suppression device, the flexible body between the sway suppression device and the car or counterweight will form new sway). In order to solve this problem, the sway suppression device (mass or linear density) is defined as follows:

[0058] The ratio α of the linear density of the sway suppression device in the length direction of the flexible body to the linear density of the elevator flexible body satisfies min≤α≤max, or the ratio β of the mass of the sway suppression device to the mass of the flexible body of a preset length satisfies min≤β≤max, where min and max are both positive real numbers; the preset length refers to the effective length of the sway suppression device to limit the bending deformation of the flexible body.

[0059] It can be seen from the above description that in order to make the sway suppression device have the best suppression effect on the sway of the flexible body, it is best to make the sway suppression device always located in the sway area and the safe area. The safe area can be predetermined according to the position and arrangement of the flexible body in the elevator system, but the sway area will change with the sway change of the building where the elevator is located, the change of the car position, the change of the air flow in the hoistway, the change of the car moving speed, etc. Therefore, for the determination of the sway area, the actual sway of the flexible body can be detected by the sway detection device to determine the sway area, and the sway model of the flexible body between the sway influencing factors of the flexible body (such as the sway and structure of the building where the elevator is located, the car position and the car moving speed, etc.) and the sway area of ​​the flexible body can be established in advance, and then the sway area of ​​the elevator flexible body can be determined according to the actual value of the sway influencing factors of the flexible body and the pre-established elevator flexible body sway model.

[0060] In this embodiment, the mass body of the sway suppression device 1 is moved to the swaying area of ​​the elevator flexible body, especially to the position with a larger swaying amplitude, and its mass is used to produce a damping effect on the swaying of the flexible body to reduce the swaying amplitude of the flexible body.

[0061] Example 2

[0062] This embodiment further defines and explains the embodiment 1.

[0063] The first controller controls the driving component according to the following rule: when the mass body moves away from the static position of the elevator flexible body when the elevator flexible body is not shaking together with the elevator flexible body, the first controller controls the driving component so that the mass body slides toward the point of the maximum shaking amplitude of the elevator flexible body; when the mass body moves close to the static position of the elevator flexible body together with the elevator flexible body, the first controller controls the driving component so that the mass body slides away from the point of the maximum shaking amplitude of the elevator flexible body.

[0064] The sway suppression device further includes a sway detection component for detecting sway at the position where the mass body 15 is located in the elevator flexible body 2; the first controller controls the driving component according to the detection result of the sway detection component. The first controller controls so that the mass body 15 is located in the sway area where the distance from the maximum sway position does not exceed a threshold.

[0065] The method for the first controller to determine the maximum shaking position according to the detection result of the shaking detection component is:

[0066] Step A1, controlling the driving component to move a preset movement amount in a first direction;

[0067] Step A2, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A1 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the first maximum shaking position;

[0068] Step A3, controlling the driving component to move a preset movement amount in the second direction;

[0069] Step A4, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A3 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the second maximum shaking position;

[0070] Step A5, the one with the larger shaking between the first maximum shaking position and the second maximum shaking position is output as the maximum shaking position.

[0071] The sway detection component is equipped with a distance measuring sensor, which determines the sway of the mass body in the elevator flexible body according to the measured distance between the distance measuring sensor and the hoistway wall. There are two distance measuring sensors, and the distance measuring directions are perpendicular to each other in the horizontal direction.

[0072] Alternatively, the sway detection component has a sensor (such as a gyroscope, IMU, etc.) for measuring the deviation angle or posture of the mass body 15 relative to the vertical direction. The sway detection component determines the sway of the mass body at the position of the elevator flexible body based on the detection result of the sensor (the greater the deviation angle, the greater the sway).

[0073] An exemplary structure of the elevator flexible body sway suppression device 1 is given below.

[0074] like Figure 2 As shown, this embodiment shows an exemplary structure of an elevator flexible body sway suppression device 1. The elevator flexible body sway suppression device 1 includes a mass body 15, a driving component and a first controller (not shown in the figure). The driving component is fixed to the mass body 15, and the first controller can be fixed to the mass body 15, or it can be set outside the mass body 15, such as on the car.

[0075] The driving component includes a first clamping member 11 and a second clamping member 12, and the first clamping member 11 and the second clamping member 12 respectively have a first edge 111 and a second edge 121. When the first edge 111 and the second edge 121 are combined, a middle hole 20 is formed. The shape of the middle hole matches the cross-sectional shape of the elevator flexible body, so that when the first clamping member 11 and the second clamping member 12 are close to each other in a manner that the first edge 111 and the second edge 121 relatively form the middle hole 20, the middle hole 20 can accommodate the elevator flexible body 2.

[0076] The driving component also includes an elastic member 13, which is connected to the first pressing member 11 and the second pressing member 12 respectively, and makes the pressure applied by the first pressing member 11 and the second pressing member 12 to the elevator flexible body 2 not less than a pressure threshold, and the friction coefficient between the contact part of the first pressing member 11 and the second pressing member 12 and the flexible body 2 is such that when the pressure is not less than the pressure threshold, there is only rolling friction but no sliding friction between the first pressing member 11 and the second pressing member 12 and the flexible body 2.

[0077] The first pressing member 11 and the second pressing member 12 are cylindrical rollers, and the shape of one side of the cross section of the cylindrical roller through the straight line where the center of the cylindrical roller is located is half of the central hole 20.

[0078] The first controller controls the sliding of the mass body 15 by controlling the rolling of at least one of the first pressing member 11 and the second pressing member 12 .

[0079] Example 3

[0080] like Figure 3 As shown, in this embodiment, based on embodiment 2, the sway suppression device 1 also includes a sway suppression component 14 and a second controller (not shown in the figure). The second controller controls the sway suppression component 14 according to the detection result of the sway detection component, so that the air generates a force on the sway suppression component 14, and the force is used to suppress the sway of the elevator flexible body 2.

[0081] The second controller determines the shaking direction and amplitude of the elevator flexible body 2 according to the detection result of the shaking detection component, determines the direction and magnitude of the force required to suppress the shaking of the elevator flexible body 2, and controls the shaking suppression component 14 accordingly to generate the force of the direction and magnitude required to suppress the shaking of the elevator flexible body 2. When there are two or more shaking detection components in the horizontal direction, control is performed separately in each direction.

[0082] The second controller performs closed-loop control on the sway of the elevator flexible body 2 with the sway amplitude of the elevator flexible body 2 as the controlled quantity, that is, takes the expected sway amplitude of the elevator flexible body 2 as the controllable input, calculates the difference between the expected sway amplitude of the elevator flexible body 2 and the actual sway amplitude of the elevator flexible body 2, and sends the difference as input to the sway suppression component 14, which generates the control instructions required to suppress the actual sway amplitude of the elevator flexible body.

[0083] Preferably, the sway suppression component 14 is a fan, and the second controller can change the air outlet direction of the fan by changing the rotation direction of the fan blades, thereby changing the direction of the force required to suppress the sway of the elevator flexible body 2. The sway suppression component 14 includes two, and the directions of the forces required to suppress the sway of the elevator flexible body 2 generated by the two sway suppression components are perpendicular to each other in the horizontal direction. The distance between the two sway suppression components in the vertical direction is not less than the distance threshold, in order to avoid mutual interference between airflows.

[0084] In this embodiment, the sway suppression component 14 is added to actively apply a force to suppress sway, which can work together with gravity to achieve a better sway suppression effect.

[0085] Example 4

[0086] On the basis of Example 1, Example 2 or Example 3, the sway suppression device further includes an energy storage device for providing required energy to energy-consuming components in the sway suppression device, and the energy storage device receives energy from the outside in a wired or wireless manner.

[0087] When the charging condition is met, the first controller controls the sway suppression device to slide to the vicinity of the elevator car so as to receive charging from the elevator car (preferably wireless charging).

[0088] The charging conditions include: the remaining energy of the energy storage device is lower than a threshold, or the swing amplitude of the flexible body is smaller than a threshold and / or there are no passengers in the car or the elevator is in an idle state.

[0089] The sway suppression device also includes a communication unit for establishing communication between the sway suppression device and the elevator. When the charging condition is met or the sway suppression device has reached a charging position near the elevator car, communication between the elevators is established to start a wireless charging transmitter located in the elevator car to charge a wireless charging receiver located in the energy storage device of the sway suppression device.

Claims

1. An elevator flexible body sway suppression device, characterized in that: It includes a mass body, a driving component and a first controller; The driving component is fixed on the mass body, driving the mass body to slide up and down along the flexible body in the well; The first controller controls the driving component so that the mass body is located at the intersection of the shaking area and the safety area of ​​the elevator flexible body; the shaking area refers to the part of the elevator flexible body that deviates from the static position when not shaking due to shaking, and the safety area refers to the part of the elevator flexible body that is greater than a preset safety distance from the end of the elevator flexible body and the elevator components that are in direct contact with the elevator flexible body.

2. The elevator flexible body sway suppression device according to claim 1, characterized in that: The first controller controls the driving component according to the following rules: When the mass body moves away from the static position of the elevator flexible body when the elevator flexible body is not shaking together with the elevator flexible body, the first controller controls the driving component so that the mass body slides toward the point of the maximum shaking amplitude of the elevator flexible body; when the mass body moves toward the static position of the elevator flexible body together with the elevator flexible body, the first controller controls the driving component so that the mass body slides away from the point of the maximum shaking amplitude of the elevator flexible body.

3. The elevator flexible body sway suppression device according to claim 1, characterized in that: The ratio α of the linear density of the sway suppression device in the length direction of the flexible body to the linear density of the elevator flexible body satisfies min≤α≤max, or the ratio β of the mass of the sway suppression device to the mass of the flexible body of a preset length satisfies min≤β≤max, wherein min and max are both positive real numbers; the preset length refers to the effective length of the sway suppression device to limit the bending deformation of the flexible body.

4. The elevator flexible body sway suppression device according to claim 1, characterized in that: The driving component includes a first clamping member and a second clamping member, the first clamping member and the second clamping member respectively have a first edge and a second edge, and when the first edge and the second edge are combined, a middle hole is formed, and the shape of the middle hole matches the cross-sectional shape of the elevator flexible body, so that when the first clamping member and the second clamping member are close to each other in a manner that the first edge and the second edge relatively form the middle hole, the middle hole can accommodate the elevator flexible body.

5. The elevator flexible body sway suppression device according to claim 4, characterized in that: The driving component also includes an elastic member, which is respectively connected to the first clamping member and the second clamping member, and makes the pressure applied by the first clamping member and the second clamping member to the elevator flexible body not less than a pressure threshold, and the friction coefficient between the contact part of the first clamping member and the second clamping member and the flexible body is such that when the pressure is not less than the pressure threshold, there is only rolling friction but no sliding friction between the first clamping member and the second clamping member and the flexible body.

6. The elevator flexible body sway suppression device according to claim 5, characterized in that: The first pressing member and the second pressing member are cylindrical rollers, and the shape of one side of the cross section of the cylindrical roller through the straight line where the center of the cylindrical roller is located is half of the central hole.

7. The elevator flexible body sway suppression device according to claim 6, characterized in that: The first controller controls the sliding of the mass body by controlling the rolling of at least one of the first pressing member and the second pressing member.

8. The elevator flexible body sway suppression device according to claim 1, characterized in that: The swaying area is determined by utilizing the swaying information of the building and the operation information of the elevator according to a pre-established elevator flexible body swaying model.

9. The elevator flexible body sway suppression device according to claim 1, characterized in that: The sway suppression device further comprises: A sway detection component, used to detect the sway of the mass body in the elevator flexible body; The first controller controls the driving component according to the detection result of the shaking detection component.

10. The elevator flexible body sway suppression device according to claim 9, characterized in that: The first controller controls the mass body so that the distance between the mass body and the maximum shaking position in the shaking area does not exceed a threshold.

11. The elevator flexible body sway suppression device according to claim 10, characterized in that: The method in which the first controller determines the maximum shaking position according to the detection result of the shaking detection component is: Step A1, controlling the driving component to move a preset movement amount in a first direction; Step A2, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A1 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the first maximum shaking position; Step A3, controlling the driving component to move a preset movement amount in the second direction; Step A4, detecting the shaking at the new position, when the shaking at the new position is greater than the shaking amount before the movement, retaining the new position, and then returning to step A3 until the shaking at the new position is less than the shaking amount before the most recent movement, and taking the position before the most recent movement as the second maximum shaking position; Step A5, the one with the larger shaking between the first maximum shaking position and the second maximum shaking position is output as the maximum shaking position.

12. The elevator flexible body sway suppression device according to claim 9, characterized in that: The sway detection component is equipped with a distance measuring sensor, which determines the sway of the mass body in the elevator flexible body according to the measured distance between the sensor and the shaft wall.

13. The elevator flexible body sway suppression device according to claim 12, characterized in that: There are two distance measuring sensors, and the distance measuring directions are perpendicular to each other in the horizontal direction.

14. The elevator flexible body sway suppression device according to claim 12, characterized in that: The sway detection component is provided with a sensor for measuring the deviation angle or posture of the mass body relative to the vertical direction. The sway detection component determines the sway of the mass body at the position in the elevator flexible body according to the detection result of the sensor.

15. The elevator flexible body sway suppression device according to claim 9, characterized in that: The sway suppression device also includes a sway suppression component and a second controller. The second controller controls the sway suppression component according to the detection result of the sway detection component, so that the air generates a force on the sway suppression component, and the force is used to suppress the sway of the elevator flexible body.

16. The elevator flexible body sway suppression device according to claim 15, characterized in that: The second controller determines the swaying direction and amplitude of the elevator flexible body according to the detection result of the swaying detection component, determines the direction and magnitude of the force required to suppress the swaying of the elevator flexible body, and controls the swaying suppression component accordingly to generate the force of the direction and magnitude required to suppress the swaying of the elevator flexible body.

17. The elevator flexible body sway suppression device according to claim 16, characterized in that: The second controller uses the sway amplitude of the elevator flexible body as the controlled quantity to perform closed-loop control on the sway of the elevator flexible body, that is, uses the expected sway amplitude of the elevator flexible body as a controllable input, calculates the difference between the expected sway amplitude of the elevator flexible body and the actual sway amplitude of the elevator flexible body, and sends the difference as input to the sway suppression component, which generates the control instructions required to suppress the actual sway amplitude of the elevator flexible body.

18. The elevator flexible body sway suppression device according to claim 15, characterized in that: The sway suppression component is a fan, and the second controller can change the air outlet direction of the fan by changing the rotation direction of the fan blades, thereby changing the direction of the force required to suppress the sway of the elevator flexible body.

19. The elevator flexible body sway suppression device according to claim 15, characterized in that: The sway suppression components include two components, and the directions of the forces generated by the components and required for suppressing the sway of the elevator flexible body are perpendicular to each other in the horizontal direction.

20. The elevator flexible body sway suppression device according to claim 19, characterized in that: The distance between the two sway suppression components in the vertical direction is not less than a distance threshold.

21. The elevator flexible body sway suppression device according to claim 1, characterized in that: The sway suppression device further comprises an energy storage device for providing required energy to energy-consuming components in the sway suppression device, and the energy storage device receives energy from the outside in a wired or wireless manner.

22. The elevator flexible body sway suppression device according to claim 21, characterized in that: When the charging condition is established, the first controller controls the sway suppression device to slide to the vicinity of the elevator car so as to receive charging from the elevator car.

23. The elevator flexible body sway suppression device according to claim 22, characterized in that: The charging condition includes: the remaining energy of the energy storage device is lower than a threshold value.

24. The elevator flexible body sway suppression device according to claim 23, characterized in that: The charging conditions also include: the shaking amplitude of the flexible body is less than a threshold value and / or there are no passengers in the car or the elevator is in an idle state.

25. The elevator flexible body sway suppression device according to claim 22, characterized in that: The sway suppression device also includes a communication unit for establishing communication between the sway suppression device and the elevator. When the charging condition is met or the sway suppression device has reached a charging position near the elevator car, communication between the elevators is established to start a wireless charging transmitter located in the elevator car to charge a wireless charging receiver located in the energy storage device of the sway suppression device.

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