CN106927327B - Elevator safety detection method and device - Google Patents
Elevator safety detection method and device Download PDFInfo
- Publication number
- CN106927327B CN106927327B CN201710188623.XA CN201710188623A CN106927327B CN 106927327 B CN106927327 B CN 106927327B CN 201710188623 A CN201710188623 A CN 201710188623A CN 106927327 B CN106927327 B CN 106927327B
- Authority
- CN
- China
- Prior art keywords
- elevator
- traction
- steel wire
- elongation
- radius
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1207—Checking means
- B66B7/1215—Checking means specially adapted for ropes or cables
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The embodiment of the invention discloses an elevator safety detection method, wherein the method comprises the following steps: in an elevator self-inspection mode, acquiring traction angle data of a traction wheel when an elevator car runs at a preset height at a preset speed; determining whether the operation parameters of the elevator meet alarm conditions or not according to the traction angle data and prestored traction angle data; and if the operation parameters of the elevator meet the alarm conditions, controlling the elevator to enter a fault alarm state. The elevator safety detection method can be used for automatic detection at regular intervals, overcomes the defects of the existing manual detection, and solves the problem of potential safety hazards brought to the elevator by parameters such as traction steel wires and the like.
Description
Technical Field
The invention relates to the field of power electronics, in particular to an elevator safety detection method and device.
Background
At present, the elevator runs by means of friction rolling of a traction steel wire on a driving wheel, and a load and a counterweight are hung at two ends of the traction steel wire. As the number of runs increases, the traction wire is stretched. When the traction steel wire extends to a certain length, the traction force is reduced due to the reduction of the section of the steel wire during the operation of the elevator, or the elevator suddenly stops or even changes the safety coefficient of the elevator. Most of the existing elevator traction steel wire detection methods are manual detection, and particularly, an elevator maintenance engineer is required to observe the extension position of a traction steel wire and measure the section change of a steel wire rope when maintaining an elevator each time. The manual detection has the following disadvantages: the manual detection has periodicity, and the problems cannot be found in time; needs an experienced engineer for detection, and is easy to miss detection. Therefore, the existing elevator safety detection method seriously influences the operation safety of the elevator.
Disclosure of Invention
The embodiment of the invention provides an elevator safety detection method and device, and aims to provide a new mode for the existing elevator safety detection.
In a first aspect, an elevator safety detection method is provided, which includes:
in an elevator self-inspection mode, acquiring traction angle data of a traction wheel when an elevator car runs at a preset height at a preset speed;
determining whether the operation parameters of the elevator meet alarm conditions or not according to the traction angle data and prestored traction angle data;
and if the operation parameters of the elevator meet the alarm conditions, controlling the elevator to enter a fault alarm state.
In a second aspect, there is also provided an elevator safety detection apparatus, the apparatus comprising:
the acquisition module is used for acquiring traction angle data of the traction wheel when the elevator car runs at a preset height at a preset speed in an elevator self-inspection mode;
the determining module is used for determining whether the operation parameters of the elevator meet the alarm condition according to the traction angle data and prestored traction angle data;
and the first control module is used for controlling the elevator to enter a fault alarm state if the operation parameters of the elevator meet the alarm conditions.
The embodiment of the invention obtains the traction angle data of the traction sheave when the elevator car runs at a preset height at a preset speed in the elevator self-checking mode; determining whether the operation parameters of the elevator meet alarm conditions or not according to the traction angle data and prestored traction angle data, for example, the elongation of the traction steel wire is greater than the preset safe elongation; if the operation parameters of the elevator meet the alarm conditions, the elevator enters a fault alarm state; e.g. to close the elevator and to send an alarm prompt. The method can automatically detect at regular intervals, overcomes the defects of the existing manual detection, and solves the problem of potential safety hazards brought to the elevator by dragging steel wires and the like. Meanwhile, the detection method does not need to add new hardware to the elevator so as to increase the cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of an elevator safety detection method provided by an embodiment of the invention;
fig. 2 is another schematic flow chart of an elevator safety detection method provided by the embodiment of the invention;
fig. 3 is a schematic diagram of a prior art elevator system;
FIG. 4 is a schematic view of the sectional structure of FIG. 3 taken along the line A-A;
FIG. 5 is a schematic flow chart of the sub-steps of step S203 in FIG. 2;
FIG. 6 is a schematic view of the sectional structure of FIG. 3 along the A-A direction;
fig. 7 is a schematic block diagram of an elevator safety detection device provided by an embodiment of the invention;
fig. 8 is another schematic block diagram of an elevator safety detection device provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Referring to fig. 1, fig. 1 is a schematic flow chart of an elevator safety detection method according to an embodiment of the present invention. The elevator safety detection method can be operated in a main control unit of an elevator control system and is used for ensuring the safety of the elevator by detecting operation parameters of a traction steel wire and the like of the elevator. As shown in fig. 1, the elevator safety detection method includes steps S101 to S106.
S101, judging whether the running time of the elevator reaches a preset cycle time.
In an embodiment of the present invention, the elevator safety detection method is a periodic detection, such as daily, weekly, monthly, or the like, a specific period may be a preset period time, if the detection is set to be performed once per week, the preset period time is weekly, and after the preset period time is reached, the main control unit of the elevator controls the elevator to automatically perform the periodic detection. When entering the periodic detection, whether the elevator is in a standby state and a no-load state needs to be judged, and the elevator can be ensured to enter an elevator self-detection mode for elevator safety detection only if the elevator is in the standby state and the no-load state.
S102, if the running time of the elevator reaches the preset cycle time, judging whether the elevator is in a standby state or a no-load state.
In the embodiment of the invention, the states of the elevator comprise an operation state, a closing state, a standby state and the like, and the standby state can be understood as that the elevator is in a standby operation state. The no-load state is that the elevator is in an unloaded state, namely, a no-load state. And if the running time of the elevator reaches the preset cycle time, further judging whether the elevator is in a standby state or a no-load state. Specifically, whether the elevator is in a no-load state or not can be judged according to the weight of the elevator.
S103, if the elevator is in a standby state and a no-load state, judging that the elevator enters an elevator self-checking mode.
In the embodiment of the invention, when the running time of the elevator reaches the preset cycle time and the elevator is judged to be in the standby state and the no-load state, the elevator can be controlled to enter the elevator self-checking mode. The self-checking mode is a precondition for safety detection of the elevator.
And S104, in the self-inspection mode of the elevator, acquiring traction angle data of the traction sheave when the elevator car runs at a preset speed and a preset height.
In the embodiment of the present invention, the preset speed is a preset running speed of the elevator during detection, for example, the slow car speed may be used to run from the bottom floor to the top floor at a constant speed, the slow car speed may be understood to be slower than the ordinary passenger running speed of the elevator, and the magnitude of the slow car speed is not limited specifically. The method for acquiring the traction angle data of the traction sheave at the preset running height of the elevator car specifically comprises the following steps: and acquiring traction angle data recorded by an encoder on a traction wheel in an elevator control system, wherein the traction angle data is the rotation angle of the traction wheel corresponding to the elevator car running at a preset speed and a preset height. The predetermined height may be defined by a door zone switch installed in the elevator shaft, for example, the predetermined height may be a height from a bottom floor to a top floor of the elevator, the height from the bottom floor to the top floor being an absolute value and being determined by the door zone switch.
And S105, determining whether the operation parameters of the elevator meet alarm conditions according to the traction angle data and prestored traction angle data.
In an embodiment of the present invention, the pre-stored number of traction angles is a pre-stored number of traction sheave rotation angles corresponding to the elevator car running at the preset speed and the preset height, and the pre-storage refers to storage when the elevator is just started to be used, specifically, average data of the elevator after being installed and before being used for several times. The traction angle data is prestored as comparison data, so that the safe operation of the elevator can be ensured. In addition, the operation parameters refer to parameters when the elevator is safely operated, and can be obtained by the traction angle data and the pre-stored traction angle data, and include, but are not limited to, a rotation angle of the traction sheave, an elongation of the traction wire, or an elongation of the traction wire.
Specifically, whether the operation parameters of the elevator meet an alarm condition is determined according to the traction angle data and prestored traction angle data, for example, when the traction angle data is greater than the prestored traction angle data and exceeds a preset safety threshold, it is determined that the alarm condition is met. The alarm condition may also be embodied in other forms, and is not limited herein.
And S106, if the operation parameters of the elevator meet the alarm conditions, controlling the elevator to enter a fault alarm state.
In an embodiment of the invention, the elevator enters a fault alarm state if the operating parameters of the elevator meet the alarm conditions. For example, if the traction angle data is larger than the prestored traction angle data and exceeds a preset safety threshold, the elevator door of the elevator is closed through the control system of the elevator, and an alarm prompt message is sent to the property department to prompt that the elevator needs to be shut down for maintenance.
In the embodiment, by judging whether the elevator enters the elevator self-checking mode or not, if the elevator enters the elevator self-checking mode, the traction angle data of the traction wheel when the elevator car runs at the preset speed and the preset height is obtained; determining whether the operation parameters of the elevator meet alarm conditions, such as whether the elongation of the traction steel wire is greater than a preset safe elongation, according to the traction angle data and prestored traction angle data; and if the fault condition is met, controlling the elevator to enter a fault alarm state, such as closing the elevator door and sending alarm prompt information. The elevator safety detection method can be used for automatically detecting at regular intervals, overcomes the defects of the existing manual detection, and solves the problem of potential safety hazards brought to the elevator by the parameter change of the traction steel wire. Meanwhile, the detection method does not need to add new hardware to the elevator so as to increase the cost.
Referring to fig. 2, fig. 2 is another schematic flow chart of an elevator safety detection method according to an embodiment of the present invention. The elevator safety detection method can be operated in a main control unit of an elevator control system and is used for solving the safety problem brought by the traction steel wire of the elevator by detecting the elongation of the traction steel wire of the elevator. As shown in fig. 2, the elevator safety detection method includes steps S201 to S207.
S201, in an elevator self-inspection mode, traction angle data of a traction wheel when an elevator car runs at a preset speed and a preset height is obtained.
In the embodiment of the invention, if the control system of the elevator detects that the elevator enters the self-checking mode, the traction angle data recorded by the encoder on the traction sheave in the control system of the elevator is obtained, and the traction angle data is the rotation angle of the traction sheave when the elevator car runs at the preset speed for the preset height. The predetermined height may be defined by a door zone switch installed in the elevator shaft, for example, the predetermined height may be a height from a bottom floor of the elevator to a top floor of the elevator, or may be a height between middle floors, and the height between the bottom floor and the top floor or the middle floors is an absolute value and may be determined by the door zone switch.
And S202, calculating the elongation of the traction steel wire according to the traction angle data and the pre-stored traction angle data.
In the embodiment of the invention, the pre-stored angle number of the traction sheave is pre-stored rotation angle data corresponding to the traction sheave when the elevator car runs to the preset height, and the pre-storage means storage when the elevator starts to be used, specifically average data when the elevator is used for the first time after being installed.
Specifically, before the elongation of the traction steel wire is calculated according to the traction angle data and the prestored traction angle data, whether the traction steel wire is elongated or not can be judged according to the traction angle data and the prestored traction angle data. And whether the traction steel wire is extended or not is particularly represented on the rotation angle data of the traction sheave. As described in detail with reference to fig. 3 and 4, the elevator includes a car 11, a counterweight 12, a traction sheave 13, and a traction wire 14, wherein the car 11 and the counterweight 12 are connected by the traction wire 14 to run back and forth in a hoistway of the elevator under the driving of the traction sheave 13, and the traction sheave 13 includes a first traction sheave 131 and a second traction sheave 132. In the elevator shaft, each floor is provided with a door zone switch 20, which in fig. 3 is simply illustrated as a door zone switch for 4 floors, i.e. a first floor 21, a second floor 22, a third floor 23 and a fourth floor 24. Since the distance between the door zone switches between floors is absolute, the distance from the first floor 21 to the fourth floor 24 is, for example, L. If the traction wire 14 of the elevator is extended for a long time, the traction wire 14 becomes thin and sinks down in the traction sheave 13, as shown in fig. 4, which is a sectional view of the traction sheave. Since the thinned hoisting wire 142 sinks in the rope groove of the traction sheave relative to the original hoisting wire 141, even when the elevator car 11 travels a distance L, the rotation angle of the traction sheave increases in response to the wire being thinned, and it is possible to determine whether the hoisting wire of the elevator is extended from the rotation angle data of the traction sheave.
And judging whether the traction steel wire extends or not according to the traction angle data and the prestored traction angle data. In order to accurately calculate the elongation of the traction steel wire and further accurately carry out safety detection on the elevator, the elongation of the traction steel wire can be calculated according to the traction angle data and the prestored traction angle data. Specifically, as shown in FIG. 5, the step S202 includes sub-steps S202 a-S202 d.
S202a, obtaining a first radius of the traction steel wire, wherein the first radius is the section radius of the traction steel wire when the traction steel wire is not stretched.
In an embodiment of the present invention, the first radius of the hoisting wire is obtained, wherein the first radius is a section radius of the hoisting wire when the hoisting wire is not extended, and the first radius of the hoisting wire can be obtained from the pre-stored hoisting angle data, so that the pre-stored hoisting angle data needs to store radius information when the hoisting wire is not extended. Referring to fig. 6, the radius r of the non-extended traction wire 1411I.e. the first radius of the traction wire.
S202b, calculating the sinking amount of the cross section center of the traction steel wire in the rope groove of the traction sheave, which is in contact with the rope groove of the traction sheave, according to the traction angle data and the pre-stored traction angle data.
In an embodiment of the present invention, the traction angle data and the pre-stored traction angle data first calculate a sinking amount H of a cross-section center of a traction wire in contact with a rope groove of a traction sheave in the traction wire, specifically as follows:
the floor height L (bottom to top) can be expressed by the rotation angle of the traction sheave when the traction wire is not extended, referring to equation 1-1.
L＝K*A*π*d/180 (1-1)
Wherein L is the floor height, K is a coefficient, a is the rotation angle of the traction sheave, d is the radius of the traction sheave when the traction wire is not extended, the radius of the traction sheave is specifically the distance from the center of the cross section of the traction wire in contact with the rope groove of the traction sheave to the center of the traction sheave, and specifically as shown by d in fig. 6, the radius d of the traction sheave can be measured when the elevator starts to be used and stored in the prestored traction angle data.
When the traction steel wire is stretched, the height of the floor is limited by a door switch, the height of the floor from the bottom layer to the top layer is unchanged, the height of the floor is L, and the height of the floor can also be expressed by the rotation angle of the traction sheave, and particularly refer to the formula 1-2.
L＝K*A1*π*d1/180 (1-2)
Wherein L is the floor height, K is the coefficient, A1Angle of rotation of traction sheave, d1The radius of the traction sheave is the radius of the traction sheave when the traction steel wire is extended, wherein the radius of the traction sheave is the distance from the center of the cross section of the traction steel wire contacting with the rope groove of the traction sheave to the center of the traction sheave in the extended traction steel wire, and is shown as d in FIG. 61。
The rotation angle A of the traction sheave when the traction steel wire is not extended and the rotation angle A of the traction sheave after the traction steel wire is extended1Can be obtained from the encoder, and the radius d of the traction sheave is stored in the prestored traction angle data. Thus, d can be calculated from equations 1-1 and 1-21。
d1＝d*A/A1(1-3)
Therefore, the traction wire is sunk in the rope groove of the traction sheave after being thinned, and the sunk amount H of the central point of the section of the traction wire after the traction wire is stretched is expressed by the sunk amount H, specifically shown as H in FIG. 6, and is calculated by the formula 1-4.
H＝d-d1＝d(1-A/A1) (1-4)
S202c, calculating a second radius of the traction steel wire according to the first radius, the included angle of the rope groove of the traction sheave and the sinking amount, wherein the second radius is the section radius of the traction steel wire after being extended, and the included angle of the rope groove of the traction sheave is the included angle of two planes in the rope groove of the traction sheave, which are in contact with the traction steel wire.
In an embodiment of the present invention, as shown in FIG. 6, the first radius is r1The included angle of the rope groove of the traction sheave is β, the sinking amount is H, and the second radius is r2. From the trigonometric relationship, the second radius r2Expressed as:
r2＝r1-H sin(β/2) (1-5)
s202d, calculating the elongation according to the preset height, the first radius and the second radius.
In the embodiment of the present invention, the volume is not changed according to the elongation and contraction of the traction wire. The elongation Δ L can be calculated as follows:
wherein r is1Is the first radius, d is the radius of the traction sheave when the traction steel wire is not extended, A is the rotation angle of the traction sheave, A1The rotation angle of the traction sheave, β is the rope groove included angle of the traction sheave, and L is the floor height, which are known data, therefore, the elongation of the traction steel wire can be accurately calculated according to the formula (1-6).
S203, judging whether the elongation is larger than a preset safe elongation.
In an embodiment of the invention, the preset safe elongation is set according to elevator standards. According to the requirement of 150mm on the minimum value of the buffer distance on the heavy side, one value of the preset safe elongation can be preferably selected from 150-300 mm.
S204, if the elongation is larger than the preset safe elongation, judging that the operation parameters of the elevator meet the alarm condition.
In the embodiment of the present invention, if the elongation is greater than the preset safe elongation, it may be determined that the operation parameter of the elevator satisfies the alarm condition, and then step S205 is executed; if the elongation is not greater than the preset safe elongation, step S206 is executed.
S205, if the operation parameters of the elevator meet the alarm conditions, controlling the elevator to enter a fault alarm state.
In the embodiment of the invention, if the operation parameters of the elevator meet the alarm conditions, the elevator is controlled to enter a fault alarm state. Such as the elongation of the traction wire being greater than a preset safe elongation. The elevator is shut down by its control system and an alarm prompt is sent to the relevant property department to prompt the elevator that it needs to be taken out of service for maintenance.
And S206, controlling the elevator to exit from the elevator self-checking mode.
In the embodiment of the invention, if the elongation of the traction steel wire is not greater than the preset safe elongation, the elevator is controlled to exit the self-checking mode, no alarm prompt is given, and the detection data can be sent to the related property department for reference during maintenance.
In the self-checking mode of the elevator, the traction angle data of the traction sheave, which is recorded by an encoder in an elevator control system when the elevator car runs at a preset height at a preset speed, is acquired; and judging whether the traction steel wire is extended and calculating the extension amount according to the traction angle data and the prestored traction angle data, judging whether an alarm condition is met according to the extension amount, and if so, controlling the elevator to enter a fault alarm state, such as closing the elevator and sending alarm prompt information. The elevator safety detection method can be used for automatically detecting at regular intervals, overcomes the defects of the existing manual detection, and can accurately calculate the elongation of the traction steel wire, thereby solving the problem of potential safety hazard brought to the elevator due to the fact that the elongation of the traction steel wire is not easy to detect.
Referring to fig. 7, fig. 7 is a schematic block diagram of an elevator safety detection device according to an embodiment of the present invention. The elevator safety detection device can be operated in a control system of an elevator and is mainly executed by a main control unit of the elevator control system. As shown in fig. 7, the elevator safety detecting apparatus 300 includes: a time judging module 301, a state judging module 302, a mode judging module 303, an obtaining module 304, a determining module 305 and a first control module 306.
And the time judgment module 301 is used for judging whether the running time of the elevator reaches the preset cycle time. Specifically, the elevator safety detection method is a periodic detection, such as daily, weekly, monthly, etc., a specific period may be a preset period time, and if the detection is set to be performed once per week, the main control unit of the elevator controls the elevator to automatically perform the periodic detection after the preset period time is reached. When entering the periodic detection, whether the elevator is in a standby state and a no-load state needs to be judged, and the elevator can be ensured to enter an elevator self-detection mode for elevator safety detection only if the elevator is in the standby state and the no-load state.
A state judgment module 302, configured to judge whether the elevator is in a standby state or a no-load state when the operation time of the elevator reaches the preset cycle time. The states of the elevator comprise an operation state, a closing state, a standby state and the like, and the standby state can be understood as that the elevator is in a state to be operated. The no-load state is that the elevator is in an unloaded state, namely, a no-load state. And if the running time of the elevator reaches the preset cycle time, further judging whether the elevator is in a standby state or a no-load state. Specifically, whether the elevator is in a no-load state or not can be judged according to the weight of the elevator.
And the mode determination module 303 is configured to determine that the elevator enters an elevator self-inspection mode if the elevator is in a standby state and a no-load state. When the running time of the elevator reaches the preset cycle time and the elevator is judged to be in a standby state and a no-load state, the elevator can be controlled to enter an elevator self-checking mode. The self-checking mode is a precondition for safety detection of the elevator.
The obtaining module 304 is configured to obtain traction angle data of the traction sheave when the elevator car runs at a predetermined height at a preset speed in the elevator self-inspection mode. Specifically, traction angle data recorded by an encoder on a traction sheave in an elevator control system is obtained, and the traction angle data is the rotation angle of the traction sheave when an elevator car runs at a preset speed for a preset height. The predetermined height may be defined by a door zone switch installed in the elevator shaft, for example, the predetermined height may be a height from a bottom floor to a top floor of the elevator, the height from the bottom floor to the top floor being an absolute value and being determined by the door zone switch.
And the determining module 305 is used for determining whether the operation parameters of the elevator meet the alarm condition according to the traction angle data and prestored traction angle data. The pre-stored number of traction angles is a pre-stored number of traction sheave rotation angles when the elevator car runs at the preset height at the preset speed, and the pre-storage refers to storage when the elevator starts to be used, specifically, average data of the elevator after being installed and before being used for several times. The traction angle data is prestored as comparison data, so that the safe operation of the elevator can be ensured. In addition, the operation parameters refer to parameters in the safe operation of the elevator, and may be obtained by using the traction angle data and pre-stored traction angle data, and include, but are not limited to, a rotation angle of the traction sheave, an elongation of the traction wire, or an elongation of the traction wire. And determining whether the operation parameters of the elevator meet an alarm condition according to the traction angle data and prestored traction angle data, for example, when the traction angle data is greater than the prestored traction angle data and exceeds a preset safety threshold, determining that the alarm condition is met.
And the first control module 306 is used for controlling the elevator to enter a fault alarm state if the operation parameters of the elevator meet the alarm conditions. For example, if the traction angle data is larger than the prestored traction angle data and exceeds a preset safety threshold, the elevator door of the elevator is closed through the control system of the elevator, and an alarm prompt message is sent to the property department to prompt that the elevator needs to be shut down for maintenance.
Referring to fig. 8, fig. 8 is a schematic block diagram of an elevator safety detection device according to an embodiment of the present invention. The elevator safety detection device can be operated in a control system of an elevator and is mainly executed by a main control unit of the elevator control system. As shown in fig. 8, the elevator safety detecting apparatus 400 includes: the device comprises an acquisition module 401, a first calculation module 402, a first judgment module 403, a judgment module 404, a first control module 405 and a second control module 406.
The obtaining module 401 is configured to obtain traction angle data of the traction sheave when the elevator car runs at a preset speed by a preset height in the elevator self-inspection mode. If the control system of the elevator detects that the elevator enters the self-checking mode, the traction angle data recorded by an encoder on a traction wheel in the elevator control system is obtained, and the traction angle data is the rotation angle of the traction wheel when the elevator car runs at a preset height at a preset speed. The predetermined height may be defined by a door zone switch installed in the elevator shaft, for example, the predetermined height may be a height from a bottom floor of the elevator to a top floor of the elevator, or may be a height between middle floors, and the height between the bottom floor and the top floor or the middle floors is an absolute value and may be determined by the door zone switch.
And the first calculating module 402 is configured to calculate the elongation of the traction wire according to the traction angle data and pre-stored traction angle data.
Specifically, whether the traction steel wire is extended or not can be judged according to the traction angle data and the prestored traction angle data. In order to accurately calculate the elongation of the traction steel wire and further more accurately carry out safety detection on the elevator, the elongation of the traction steel wire can be calculated according to the traction angle data and the prestored traction angle data. Based on this, the first calculation module 403 includes an acquisition sub-module 4021, a first calculation sub-module 4022, a second calculation sub-module 4023, and a third calculation sub-module 4024.
The obtaining submodule 4021 is used for obtaining a first radius of the traction steel wire, wherein the first radius is a section radius of the traction steel wire when the traction steel wire is not extended; the first calculation submodule 4022 is used for calculating the sinking amount of the section center of the traction steel wire in the traction sheave rope groove, which is in contact with the traction sheave rope groove, in the traction steel wire according to the traction angle data and prestored traction angle data; the second calculation submodule 4023 is used for calculating a second radius of the traction steel wire according to the first radius, the included angle of the rope groove of the traction wheel and the sinking amount, wherein the second radius is the section radius of the traction steel wire after the traction steel wire is extended, and the included angle of the rope groove of the traction wheel is the included angle of two planes in the traction wheel, which are in contact with the traction steel wire; a third computing submodule 4024 is configured to compute the elongation amount according to the predetermined height, the first radius, and the second radius.
A first judging module 403, configured to judge whether the elongation is greater than a preset safe elongation. Specifically, the preset safe elongation is set according to elevator standards. Specifically, the preset safe elongation is set according to elevator standards. According to the requirement of 150mm on the minimum value of the buffer distance on the heavy side, one value of the preset safe elongation can be preferably selected from 150-300 mm.
A determining module 404, configured to determine that the operation parameter of the elevator meets the alarm condition when the elongation is greater than the preset safe elongation. For example, if the elongation is greater than the preset safe elongation, it may be determined that the operation parameter of the elevator satisfies the alarm condition, and the first control module 405 is invoked; and if the elongation is not greater than the preset safe elongation, calling a second control module 406.
And the first control module 405 is used for controlling the elevator to enter a fault alarm state if the operation parameters of the elevator meet the alarm conditions. Such as the elongation of the traction wire being greater than a preset safe elongation. The elevator is shut down by its control system and an alarm prompt is sent to the relevant property department to prompt the elevator that it needs to be taken out of service for maintenance.
And a second control module 406, configured to control the elevator to exit the self-checking mode if the elongation is not greater than the preset safe elongation. Specifically, if the elongation of the traction steel wire is not greater than the preset safe elongation, the elevator is controlled to exit the self-checking mode, no alarm prompt is given, and the detection data can be sent to relevant property departments for reference during maintenance.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the terminal and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The modules in the device provided by the embodiment of the invention can be combined, divided and deleted according to actual needs.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An elevator safety detection method is characterized by comprising the following steps:
in an elevator self-inspection mode, acquiring traction angle data of a traction wheel when an elevator car runs at a preset height at a preset speed;
calculating the elongation of the traction steel wire according to the traction angle data and the prestored traction angle data;
judging whether the elongation is larger than a preset safe elongation;
if the elongation is larger than the preset safe elongation, judging that the operation parameters of the elevator meet alarm conditions;
if the operation parameters of the elevator meet the alarm conditions, controlling the elevator to enter a fault alarm state;
wherein, the length of dragging the steel wire according to dragging angle data and prestoring dragging angle data calculation, include:
acquiring a first radius of the traction steel wire, wherein the first radius is the radius of a section of the traction steel wire when the traction steel wire is not extended;
calculating the sinking amount of the cross section center of the traction steel wire in the traction sheave rope groove, which is in contact with the traction sheave rope groove, in the traction steel wire according to the traction angle data and prestored traction angle data;
calculating a second radius of the traction steel wire according to the first radius, the included angle of the rope groove of the traction wheel and the sinking amount, wherein the second radius is the section radius of the traction steel wire after being extended, and the included angle of the rope groove of the traction wheel is the included angle of two planes in the traction wheel, which are in contact with the traction steel wire;
and calculating the elongation of the traction steel wire according to the preset height, the first radius and the second radius.
2. The elevator safety detection method according to claim 1, characterized in that before the elevator self-test mode, the method comprises:
judging whether the running time of the elevator reaches a preset cycle time or not;
if the running time of the elevator reaches the preset cycle time, judging whether the elevator is in a standby state or a no-load state;
and if the elevator is in a standby state and a no-load state, judging that the elevator enters an elevator self-checking mode.
3. The elevator safety detection method according to claim 1, wherein after the determining whether the elongation is greater than a preset safety elongation, the method further comprises:
and if the elongation is not greater than the preset safe elongation, controlling the elevator to exit the elevator self-checking mode.
4. An elevator safety detection device, characterized by comprising:
the acquisition module is used for acquiring traction angle data of the traction wheel when the elevator car runs at a preset height at a preset speed in an elevator self-inspection mode;
the first calculation module is used for calculating the elongation of the traction steel wire according to the traction angle data and prestored traction angle data;
the first judgment module is used for judging whether the elongation is greater than a preset safe elongation;
the judging module is used for judging that the operation parameters of the elevator meet the alarm condition when the elongation is greater than the preset safe elongation;
the first control module is used for controlling the elevator to enter a fault alarm state if the operation parameters of the elevator meet the alarm conditions;
wherein the first computing module comprises:
the acquisition submodule is used for acquiring a first radius of the traction steel wire, wherein the first radius is the radius of the section of the traction steel wire when the traction steel wire is not stretched;
the first calculation submodule is used for calculating the sinking amount of the section center of the traction steel wire in the traction sheave rope groove, which is in contact with the traction sheave rope groove, in the traction steel wire according to the traction angle data and prestored traction angle data;
the second calculation submodule is used for calculating a second radius of the traction steel wire according to the first radius, the included angle of the rope groove of the traction wheel and the sinking amount, wherein the second radius is the section radius of the traction steel wire after being extended, and the included angle of the rope groove of the traction wheel is the included angle of two planes in the traction wheel, which are in contact with the traction steel wire;
and the third calculation submodule is used for calculating the elongation of the traction steel wire according to the preset height, the first radius and the second radius.
5. The elevator safety detection device according to claim 4, comprising:
the time judgment module is used for judging whether the running time of the elevator reaches the preset cycle time or not;
the state judgment module is used for judging whether the elevator is in a standby state and a no-load state when the running time of the elevator reaches the preset cycle time;
and the mode judging module is used for judging that the elevator enters an elevator self-checking mode if the elevator is in a standby state and a no-load state.
6. The elevator safety detection device according to claim 4, characterized in that the elevator safety detection device further comprises:
and the second control module is used for controlling the elevator to exit the self-checking mode when the elongation is not greater than the preset safe elongation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188623.XA CN106927327B (en) | 2017-03-27 | 2017-03-27 | Elevator safety detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188623.XA CN106927327B (en) | 2017-03-27 | 2017-03-27 | Elevator safety detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106927327A CN106927327A (en) | 2017-07-07 |
| CN106927327B true CN106927327B (en) | 2020-06-16 |
Family
ID=59426644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710188623.XA Active CN106927327B (en) | 2017-03-27 | 2017-03-27 | Elevator safety detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106927327B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110371814B (en) * | 2019-06-17 | 2021-09-17 | 重庆韩代电梯工程有限公司 | Elevator operation monitoring system and elevator operation monitoring method |
| US11718501B2 (en) | 2020-04-06 | 2023-08-08 | Otis Elevator Company | Elevator sheave wear detection |
| CN112265889A (en) * | 2020-10-26 | 2021-01-26 | 广州广日电梯工业有限公司 | Detection method and detection device for elevator steel wire rope |
| CN112299181A (en) * | 2020-11-25 | 2021-02-02 | 广东省特种设备检测研究院梅州检测院 | Elevator monitoring system based on Internet of things |
| CN114194964A (en) * | 2021-12-16 | 2022-03-18 | 西子快速科技有限公司 | Operation mode for lifting sightseeing elevator in stable scenic spot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264622A (en) * | 2008-12-23 | 2011-11-30 | 因温特奥股份公司 | Elevator installation |
| CN104760858A (en) * | 2015-05-06 | 2015-07-08 | 上海爱登堡电梯（宜昌）有限公司 | Safety control system of elevator |
| CN105600627A (en) * | 2014-12-11 | 2016-05-25 | 冯春魁 | Method and system for obtaining, controlling and operating elevator parameters and monitoring load |
| CN205328390U (en) * | 2016-01-22 | 2016-06-22 | 日立电梯（中国）有限公司 | Elevator car position and speed detecting system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2460753A1 (en) * | 2010-12-03 | 2012-06-06 | Inventio AG | Method for testing elevator brakes |
| CN106115404A (en) * | 2016-08-26 | 2016-11-16 | 广州永日电梯有限公司 | A kind of elevator wire rope skidding detection method |
-
2017
- 2017-03-27 CN CN201710188623.XA patent/CN106927327B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264622A (en) * | 2008-12-23 | 2011-11-30 | 因温特奥股份公司 | Elevator installation |
| CN105600627A (en) * | 2014-12-11 | 2016-05-25 | 冯春魁 | Method and system for obtaining, controlling and operating elevator parameters and monitoring load |
| CN104760858A (en) * | 2015-05-06 | 2015-07-08 | 上海爱登堡电梯（宜昌）有限公司 | Safety control system of elevator |
| CN205328390U (en) * | 2016-01-22 | 2016-06-22 | 日立电梯（中国）有限公司 | Elevator car position and speed detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106927327A (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106927327B (en) | Elevator safety detection method and device | |
| CN111108054B (en) | Fracture detection device | |
| JP4292155B2 (en) | Checking method for excessive resistance and effective braking operation | |
| JP4849397B2 (en) | Elevator abnormality detection device | |
| US10252879B2 (en) | Brake operation management in elevators | |
| JP6049902B2 (en) | Elevator diagnostic equipment | |
| US20200180910A1 (en) | Method and an elevator system for defining an elongation of an elevator car suspension means | |
| KR102028293B1 (en) | Breaking detection device | |
| JP4994633B2 (en) | Elevator automatic inspection device | |
| KR20190089979A (en) | Break detection device | |
| KR20190007877A (en) | An safety elevator equipped with anti-skid device | |
| US10486935B2 (en) | Elevator diagnosing device | |
| CN107792740A (en) | Elevator brake abatement detecting method, device, equipment and storage medium | |
| JP2009023768A (en) | Rope slip detector of elevator | |
| CN104210916A (en) | Elevator load detection method and load detection device | |
| CN111132921B (en) | Method for defining the condition of a suspension device of an elevator car, elevator safety control unit and elevator system | |
| JP2002003118A (en) | Elevator device | |
| JP5573300B2 (en) | Elevator control device | |
| JP7047972B2 (en) | Elevator slip detection system | |
| JP6278859B2 (en) | Elevator maintenance method and elevator system | |
| CN112240836A (en) | Traction performance monitoring method and device for traction type elevator and elevator | |
| JP4965814B2 (en) | Elevator main rope slip detection device | |
| US20240025700A1 (en) | Method and system for estimating rope slip in an elevator system | |
| KR20170078940A (en) | Frictional coefficient measuring device of an escalator and moving walk for slipping prevention | |
| JPH11209030A (en) | Elevator device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |