CN111717752A - Method, apparatus, storage medium and device for checking braking performance of elevator brake - Google Patents
Method, apparatus, storage medium and device for checking braking performance of elevator brake Download PDFInfo
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- CN111717752A CN111717752A CN202010564240.XA CN202010564240A CN111717752A CN 111717752 A CN111717752 A CN 111717752A CN 202010564240 A CN202010564240 A CN 202010564240A CN 111717752 A CN111717752 A CN 111717752A
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- 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
- B66B5/0037—Performance analysers
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- 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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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Abstract
The invention discloses a method, equipment, a storage medium and a device for testing the braking performance of an elevator brake, wherein the method comprises the following steps: when the elevator is detected to be in an idle state, controlling an elevator brake of the elevator to enter a first running mode, acquiring a barring torque value in the first running mode, determining an external torque according to the barring torque value, controlling the elevator brake to enter a second running mode, applying the external torque to a traction sheave of the elevator, acquiring the current state of the traction sheave, and judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state; according to the invention, the external torque is determined according to the turning moment value in the first operation mode, the external torque is applied to the traction sheave of the elevator in the second operation mode, and whether the braking performance of the elevator brake meets the preset standard or not is judged according to the current state of the traction sheave, so that the braking performance of a single group of elevator brakes can be tested under the condition of no test load, and the testing time and the testing cost are shortened.
Description
Technical Field
The invention relates to the technical field of elevator equipment inspection, in particular to a method, equipment, a storage medium and a device for inspecting the braking performance of an elevator brake.
Background
At present, a method for checking the braking performance of an elevator brake is to load a test load equivalent to 1.25 times of a rated load capacity in a car, cut off power supply to a motor and the brake when the car is moving at a normal operating speed, observe whether the brake can stop the operation of a driving main machine, and judge whether a detection item is qualified.
Although the above-mentioned inspection method is simple and clear, it has the following problems: (1) a large amount of test loads need to be carried, the labor intensity is high, the used time is long, the cost is high, and the effective implementation of the test loads is seriously hindered; (2) according to the method, the action condition and the braking effect of the brake are observed by cutting off a main power supply or a safety circuit, and as two groups of mechanical parts of the brake act simultaneously, the braking capability of a single group of brakes required by 12.4.2.1 in the national standard elevator manufacturing and installation safety Specification (GB7588-2003) and 4.2.2.2 in the national standard elevator traction machine (GB/T24478-2009) cannot be verified.
Therefore, how to test the braking performance of a single group of elevator brakes under the condition of not loading test loads is an urgent technical problem to be solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method, equipment, a storage medium and a device for testing the braking performance of an elevator brake, and aims to solve the technical problem of testing the braking performance of a single-group elevator brake under the condition of not loading a test load in the prior art.
In order to achieve the above object, the present invention provides a method for checking braking performance of an elevator brake, comprising the steps of:
controlling an elevator brake of the elevator to enter a first running mode when the elevator is detected to be in an idle state;
acquiring a turning moment value in the first running mode, and determining an external moment according to the turning moment value;
controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave;
and judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
Preferably, the acquiring the turning moment value in the first operation mode and determining the applied moment according to the turning moment value includes:
acquiring a barring moment value in the first running mode, and determining an elevator balance coefficient of the elevator according to the barring moment value;
determining a first moment of a traction sheave of the elevator in the first operating mode according to the elevator balance coefficient;
and determining the external moment of the traction sheave according to the first moment.
Preferably, the determining a first moment of the traction sheave of the elevator in the first operation mode according to the elevator balance coefficient includes:
obtaining a first torque direction of a traction sheave of the elevator in the first mode of operation;
determining a first moment value of the traction sheave according to the elevator balance coefficient, and determining a first moment according to the first moment direction and the first moment value.
Preferably, the determining an applied torque of the traction sheave from the first torque comprises:
determining a second torque value according to the first torque value and a preset rated load capacity;
taking the first moment direction as an external moment direction, and determining an external moment value according to the second moment value;
and determining the external moment of the traction sheave according to the external moment direction and the external moment value.
Preferably, the determining a second torque value according to the first torque value and a preset rated load capacity includes:
acquiring the pitch circle diameter of a traction wheel gear, the pitch circle diameter of a traction wheel steel wire rope groove and the pitch circle diameter of a gear meshing part of a torque-measuring barring gear;
calculating a second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the meshing position of the force-measuring torque barring gear and a preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
Preferably, the judging whether the braking performance of the elevator brake meets a preset standard according to the current state includes:
judging whether the current state is in a preset state or not;
and when the current state is in a preset state, judging that the braking performance of the elevator brake meets a preset standard.
Preferably, after the determining whether the current state is in the preset state, the method further includes:
when the current state is not in a preset state, calculating a distance deviation value between the additional torque value and the second torque value according to a preset distance formula;
adjusting the external torque value according to the distance deviation value to obtain a target torque value;
determining a target moment of the traction sheave according to the external moment direction and the target moment value;
and taking the target torque as a new external torque, executing the step of controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave.
In order to achieve the above object, the present invention further provides a brake performance testing apparatus of an elevator brake, including a memory, a processor, and a brake performance testing program of an elevator brake stored on the memory and operable on the processor, the brake performance testing program of an elevator brake being configured to implement the steps of the brake performance testing method of an elevator brake as described above.
In order to achieve the above object, the present invention also proposes a storage medium having stored thereon a brake performance testing program for an elevator brake, which when executed by a processor implements the steps of the method for testing the brake performance of an elevator brake as described above.
In order to achieve the above object, the present invention also provides a brake performance testing apparatus for an elevator brake, including: the device comprises a control module, an external torque determining module, a torque applying module and a checking module;
the control module is used for controlling an elevator brake of the elevator to enter a first running mode when the elevator is detected to be in an idle state;
the external torque determining module is used for acquiring a turning moment value in the first operation mode and determining an external torque according to the turning moment value;
the torque application module is used for controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator and acquiring the current state of the traction sheave;
and the inspection module is used for judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
In the invention, when an elevator is detected to be in an idle load state, an elevator brake of the elevator is controlled to enter a first running mode, a barring torque value under the first running mode is obtained, an external torque is determined according to the barring torque value, the elevator brake is controlled to enter a second running mode, the external torque is applied to a traction sheave of the elevator, the current state of the traction sheave is obtained, and whether the braking performance of the elevator brake meets a preset standard or not is judged according to the current state; according to the invention, the external torque is determined according to the turning moment value in the first operation mode, the external torque is applied to the traction sheave of the elevator in the second operation mode, and whether the braking performance of the elevator brake meets the preset standard or not is judged according to the current state of the traction sheave, so that the braking performance of a single group of elevator brakes can be tested under the condition of no test load, the testing time and cost are shortened, and the labor intensity and the safety risk are greatly reduced.
Drawings
Fig. 1 is a schematic structural view of a brake performance testing apparatus of an elevator brake in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a first embodiment of a brake performance testing method of an elevator brake according to the present invention;
fig. 3 is a schematic view of a detection structure of an embodiment of the method for testing the braking performance of the elevator brake of the invention;
fig. 4 is a schematic flow chart of a braking performance testing method of an elevator brake according to a second embodiment of the invention;
fig. 5 is a schematic flow chart of a method for checking the braking performance of an elevator brake according to a third embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for checking the braking performance of an elevator brake according to a third embodiment of the present invention;
fig. 7 is a block diagram showing the construction of the first embodiment of the braking performance verifying unit of the elevator brake according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
The reference numbers illustrate:
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a brake performance testing device of an elevator brake in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the brake performance verifying apparatus of an elevator brake may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the arrangement shown in fig. 1 does not constitute a limitation of the braking performance testing apparatus of an elevator brake and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, identified as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a brake performance verification program for an elevator brake.
In the brake performance testing apparatus of the elevator brake shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the brake performance verifying apparatus of the elevator brake calls the brake performance verifying program of the elevator brake stored in the memory 1005 through the processor 1001 and performs the brake performance verifying method of the elevator brake provided by the embodiment of the present invention.
Based on the hardware structure, the embodiment of the brake performance testing method of the elevator brake is provided.
Referring to fig. 2, fig. 2 is a flow chart illustrating a first embodiment of the method for testing the braking performance of the elevator brake according to the present invention, and the first embodiment of the method for testing the braking performance of the elevator brake according to the present invention is provided.
In a first embodiment, the method for verifying the braking performance of an elevator brake comprises the following steps:
step S10: controlling an elevator brake of the elevator to enter a first operating mode when the elevator is detected to be in an unloaded state.
It should be understood that the execution subject of the present embodiment is the braking performance inspection device of the elevator brake, wherein the braking performance inspection device of the elevator brake may be an electronic device such as a personal computer or a server.
It should be noted that the empty state may be a state in which the car of the elevator is not loaded at all. For example, no one or goods are in the car of the elevator;
the first operating mode may be that all of the elevator brakes are in a released state. For example, the elevator brake consists of an elevator brake a and an elevator brake B, and controlling the elevator brake of the elevator to enter the first operation mode can be that two groups of brakes are opened simultaneously by using a brake release wrench or an electric brake release device to be in a release state; (ii) a
The released state may be that the brake shoe in the elevator brake is spread out completely out of engagement with the brake drum.
Step S20: and acquiring the turning moment value in the first operation mode, and determining an external moment according to the turning moment value.
It should be understood that obtaining the turning moment value in the first operation mode and determining the external moment according to the turning moment value may be obtaining the turning moment value in the first operation mode, determining an elevator balance coefficient of the elevator according to the turning moment value, determining a first moment of a traction sheave of the elevator in the first operation mode according to the elevator balance coefficient, and determining the external moment of the traction sheave according to the first moment.
It should be noted that the turning moment value may be measured by a moment turning device.
It should be understood that the determining of the elevator balance coefficient of the elevator according to the barring moment value may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel steel wire rope groove and a pitch circle diameter of a moment-measuring barring device gear engagement part, and calculate the elevator balance coefficient of the elevator through an elevator balance coefficient formula according to the barring moment value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the moment-measuring barring device gear engagement part and a preset rated load capacity;
the formula of the elevator balance coefficient is as follows:
in the formula, k is the balance coefficient of the elevator, M is the turning moment value, R is the pitch circle diameter of the traction wheel gear, and R is1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
It can be understood that the specific meanings of the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel wire rope groove and the pitch circle diameter of the meshing part of the torque-measuring jigger gear are shown in the detection structure schematic diagram of fig. 3.
It is to be understood that the determining of the first moment of the traction sheave of the elevator in the first operating mode depending on the elevator balancing factor may be taking a first moment direction of the traction sheave of the elevator in the first operating mode, determining a first moment value of the traction sheave depending on the elevator balancing factor, and determining the first moment depending on the first moment direction and the first moment value.
It should be understood that the determining of the first moment value of the traction sheave according to the elevator balance coefficient may be obtaining a pitch circle diameter of a steel wire rope groove of the traction sheave, calculating the first moment value of the traction sheave through a first moment calculation formula according to the elevator balance coefficient, the pitch circle diameter of the steel wire rope groove of the traction sheave and a preset rated load weight, and determining the first moment according to the first moment direction and the first moment value;
the first moment value calculation formula is as follows:
M1＝k×Q×g×0.5×R1
in the formula, M1Is a first moment value, k is the balance coefficient of the elevator, Q is the preset rated load capacity, g is the gravity constant, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave.
It can be understood that the determining of the external torque of the traction sheave according to the first torque may be determining a second torque value according to the first torque value and a preset rated load capacity, regarding the first torque direction as an external torque direction, determining an external torque value according to the second torque value, and determining the external torque of the traction sheave according to the external torque direction and the external torque value.
It should be understood that the determining of the second torque value according to the first torque value and the preset rated load capacity may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel wire rope groove and a pitch circle diameter of a force-measuring barring gear meshing position, and calculate the second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel wire rope groove, the pitch circle diameter of the force-measuring barring gear meshing position and the preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
Step S30: and controlling the elevator brake to enter a second operation mode, applying the applied torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave.
It should be noted that the second operation mode may be that one of the elevator brakes is in a released state and one of the elevator brakes is in a tightened state. For example, the elevator brake consists of an elevator brake A and an elevator brake B, and the control of the elevator brake to enter the second operation mode can be realized by releasing the elevator brake A by using a brake release wrench to enable the elevator brake A to be in a released state; because all the operations of the method are tested under the condition that the elevator is powered off, the brake B is in a contracting brake/clasping state at the moment;
controlling the elevator brake to enter the second operation mode, namely releasing the elevator brake B by using a brake release wrench to enable the elevator brake B to be in a released state; the elevator brake a is in a hugging state.
The holding state can be that the brake shoe in the elevator brake compresses tightly, holds the brake wheel completely tightly, and ensures that the motor does not rotate.
It should be understood that the brake releasing wrench releases the elevator brake A to enable the elevator brake A to be in a release state, because all operations of the method are tested under the condition that the elevator is powered off, at the moment, the elevator brake B is in a contracting brake/contracting state, and the brake performance of the elevator brake judged according to the current state is the brake performance of the elevator brake B; and the brake releasing spanner releases the elevator brake B, when the elevator brake B is in a released state, the brake A is kept in a tightly-holding state, and the brake performance of the elevator brake judged according to the current state is the brake performance of the elevator brake A.
Step S40: and judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
It should be understood that the judgment of whether the braking performance of the elevator brake meets the preset standard according to the current state may be a judgment of whether the current state is in a preset state, and when the current state is in the preset state, the judgment of whether the braking performance of the elevator brake meets the preset standard;
or judging whether the current state is in a preset state, when the current state is not in the preset state, calculating a distance deviation value between the applied torque value and the second torque value according to a preset distance formula, adjusting the applied torque value according to the distance deviation value to obtain a target torque value, determining a target torque of the traction sheave according to the applied torque direction and the target torque value, and taking the target torque as a new applied torque.
It should be understood that the determining whether the current state is in the preset state may be determining whether the current state is in a static state.
When the current state is in a static state, the braking static moment of the elevator brake meets the requirement, namely the braking performance of the elevator brake meets the preset standard. The preset standard can be 12.4.2.1 in the national standard elevator manufacturing and installation safety code (GB7588-2003) and the braking capacity of a single set of brakes required by 4.2.2.2 in the national standard elevator traction machine (GB/T24478-2009).
And when the current state is not in the preset state, the external torque value is over large. In this case, it is necessary to reduce the applied torque value as close as possible to the second torque value. Therefore, the distance deviation value between the applied torque value and the second torque value can be calculated according to the preset distance formula.
It should be noted that the preset distance formula may be any one of an euclidean distance formula, a weighted euclidean distance formula, a manhattan distance formula, and a threshold costas distance formula, which is not limited in this embodiment.
It should be understood that, adjusting the applied torque value according to the distance deviation value to obtain the target torque value may be determining a torque adjustment value according to the distance deviation value, and adjusting the applied torque value according to the torque adjustment value to obtain the target torque value.
It is understood that determining the torque adjustment value from the distance deviation value may be taking the distance deviation value directly as the torque adjustment value; or the distance deviation value is multiplied by a preset ratio to obtain a calculation result, and the calculation result is used as a moment adjustment value. The preset ratio may be 0.5, which is not limited in this embodiment.
It should be understood that the step of applying the additional torque to the traction sheave of the elevator, acquiring the current state of the traction sheave, and determining whether the braking performance of the elevator brake meets a preset standard according to the current state may be performed after the target torque is used as a new additional torque.
Further, for ease of understanding, the following is exemplified:
the invention provides a method for testing the braking performance of an elevator brake, which comprises the following steps of:
(1) measuring the rated load Q of a lift car of a gearless drive elevator, the pitch circle diameter R of a traction wheel gear and the pitch circle diameter R of a traction wheel steel wire rope groove1The pitch circle diameter r at the meshing position of the force measuring rectangular barring gear;
(2) enabling the lift car of the elevator to be in an idle state, installing a force-measuring turning gear and keeping the force-measuring turning gear static, controlling all brakes to release, and obtaining a reading on the force-measuring turning gear, wherein the reading is recorded as M;
(3) calculating an elevator balance coefficient k:
(4) calculating the moment M of the weight difference between the counterweight side and the car side acting on the circle center of the traction sheave when the car is in no load1，M1＝k×Q×g×0.5×R1；
(5) Continuously keeping the lift car in an idle load state, installing a torque measuring barring gear, and controlling one group of brakes to release;
(6) calculating M2：M2Is equal to M1The sum of the moment and the moment is equivalent to the moment generated to the circle center of the traction sheave when the car is loaded with 1.25 times of rated load Q:
(7) applying a force M corresponding to the center of a circle to the traction sheave through the force measuring jigger device1The moment and the moment value in the same direction are more than M2Moment of (D), noted as M3；
(8) If the traction sheave still keeps the static state at the moment, the braking static moment of the group of brakes which are not released is indicated to meet the requirement;
(9) another set of brakes was tested in the same way.
In a first embodiment, when an elevator is detected to be in an idle load state, controlling an elevator brake of the elevator to enter a first operation mode, acquiring a barring torque value in the first operation mode, determining an external torque according to the barring torque value, controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, acquiring the current state of the traction sheave, and judging whether the braking performance of the elevator brake meets a preset standard according to the current state; in the embodiment, the external torque is determined according to the turning moment value in the first operation mode, the external torque is applied to the traction sheave of the elevator in the second operation mode, and whether the braking performance of the elevator brake meets the preset standard or not is judged according to the current state of the traction sheave, so that the braking performance of a single group of elevator brakes can be tested under the condition of no loading of test load, the testing time and cost are shortened, and the labor intensity and the safety risk are greatly reduced.
Referring to fig. 4, fig. 4 is a flow chart illustrating a second embodiment of the method for checking the braking performance of the elevator brake according to the present invention, and the second embodiment of the method for checking the braking performance of the elevator brake according to the present invention is proposed based on the first embodiment illustrated in fig. 2.
In the second embodiment, the step S20 includes:
step S201: and acquiring a barring moment value in the first running mode, and determining an elevator balance coefficient of the elevator according to the barring moment value.
It should be noted that the turning moment value may be measured by a moment turning device.
It should be understood that the determining of the elevator balance coefficient of the elevator according to the barring moment value may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel steel wire rope groove and a pitch circle diameter of a moment-measuring barring device gear engagement part, and calculate the elevator balance coefficient of the elevator through an elevator balance coefficient formula according to the barring moment value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the moment-measuring barring device gear engagement part and a preset rated load capacity;
the formula of the elevator balance coefficient is as follows:
in the formula, k is the balance coefficient of the elevator, M is the turning moment value, R is the pitch circle diameter of the traction wheel gear, and R is1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
Step S202: determining a first moment of a traction sheave of the elevator in the first operating mode according to the elevator balance coefficient.
It is to be understood that the determining of the first moment of the traction sheave of the elevator in the first operating mode depending on the elevator balancing factor may be taking a first moment direction of the traction sheave of the elevator in the first operating mode, determining a first moment value of the traction sheave depending on the elevator balancing factor, and determining the first moment depending on the first moment direction and the first moment value.
It should be understood that the determining of the first moment value of the traction sheave according to the elevator balance coefficient may be obtaining a pitch circle diameter of a steel wire rope groove of the traction sheave, calculating the first moment value of the traction sheave through a first moment calculation formula according to the elevator balance coefficient, the pitch circle diameter of the steel wire rope groove of the traction sheave and a preset rated load weight, and determining the first moment according to the first moment direction and the first moment value;
the first moment value calculation formula is as follows:
M1＝k×Q×g×0.5×R1
in the formula, M1Is a first moment value, k is the balance coefficient of the elevator, Q is the preset rated load capacity, g is the gravity constant, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave.
Step S203: and determining the external moment of the traction sheave according to the first moment.
It can be understood that the determining of the external torque of the traction sheave according to the first torque may be determining a second torque value according to the first torque value and a preset rated load capacity, regarding the first torque direction as an external torque direction, determining an external torque value according to the second torque value, and determining the external torque of the traction sheave according to the external torque direction and the external torque value.
It should be understood that the determining of the second torque value according to the first torque value and the preset rated load capacity may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel wire rope groove and a pitch circle diameter of a force-measuring barring gear meshing position, and calculate the second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel wire rope groove, the pitch circle diameter of the force-measuring barring gear meshing position and the preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
In a second embodiment, a barring torque value in the first operation mode is obtained, an elevator balance coefficient of the elevator is determined according to the barring torque value, a first torque of a traction sheave of the elevator in the first operation mode is determined according to the elevator balance coefficient, and an external torque of the traction sheave is determined according to the first torque; according to the embodiment, the balance coefficient of the elevator is determined through the turning moment value, the first moment is determined according to the balance coefficient of the elevator, and the external moment is determined according to the first moment, so that the balance coefficient of the elevator can be detected under the condition of no load, and the external moment is determined.
Referring to fig. 5, fig. 5 is a flow chart illustrating a method for checking the braking performance of an elevator brake according to a third embodiment of the present invention, and the method for checking the braking performance of an elevator brake according to the third embodiment of the present invention is proposed based on the second embodiment shown in fig. 4.
In a third embodiment, the step S202 includes:
step S2021: a first torque direction of a traction sheave of the elevator in the first mode of operation is obtained.
It can be understood that obtaining the first torque direction of the traction sheave of the elevator in the first operation mode may be obtaining a torque direction in which a difference in weight between the counterweight side and the car side of the elevator in the first operation mode acts on a center of the traction sheave, and taking the torque direction as the first torque direction.
Step S2022: determining a first moment value of the traction sheave according to the elevator balance coefficient, and determining a first moment according to the first moment direction and the first moment value.
It should be understood that the determining of the first moment value of the traction sheave according to the elevator balance coefficient may be obtaining a pitch circle diameter of a steel wire rope groove of the traction sheave, calculating the first moment value of the traction sheave through a first moment calculation formula according to the elevator balance coefficient, the pitch circle diameter of the steel wire rope groove of the traction sheave and a preset rated load weight, and determining the first moment according to the first moment direction and the first moment value;
the first moment value calculation formula is as follows:
M1＝k×Q×g×0.5×R1
in the formula, M1Is a first moment value, k is the balance coefficient of the elevator, Q is the preset rated load capacity, g is the gravity constant, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave.
In a third embodiment, the step S203 includes:
step S2031: and determining a second torque value according to the first torque value and a preset rated load capacity.
Further, the step S2031 includes:
acquiring the pitch circle diameter of a traction wheel gear, the pitch circle diameter of a traction wheel steel wire rope groove and the pitch circle diameter of a gear meshing part of a torque-measuring barring gear;
calculating a second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the meshing position of the force-measuring torque barring gear and a preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the gear meshing part of the force measuring rectangular barring gear, and Q is pre-pitch diameterAnd g is a gravity constant.
Step S2032: and taking the first moment direction as an external moment direction, and determining an external moment value according to the second moment value.
It will be appreciated that determining an applied torque value from the second torque value may be taking the second torque value as the applied torque value; or the value larger than the second moment value can be taken as the external moment; the external torque value may be set to zero first, and then the external torque value is gradually increased until the external torque value is equal to the second torque value, which is not limited in this embodiment.
Step S2033: and determining the external moment of the traction sheave according to the external moment direction and the external moment value.
Understandably, because the moment is a vector, it has a direction and magnitude. Therefore, the applied torque of the traction sheave can be directly determined according to the applied torque direction and the applied torque value.
In a third embodiment, a first torque direction of a traction sheave of the elevator in the first operation mode is obtained, a first torque value of the traction sheave is determined according to the elevator balance coefficient, a first torque is determined according to the first torque direction and the first torque value, a second torque value is determined according to the first torque value and a preset rated load capacity, the first torque direction is used as an external torque direction, an external torque value is determined according to the second torque value, and an external torque of the traction sheave is determined according to the external torque direction and the external torque value; the first moment is determined through the first moment direction and the elevator balance coefficient, and the external moment is determined according to the first moment, so that the external moment determining speed can be increased;
in the third embodiment, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove and the pitch circle diameter of the meshing position of the torque-measuring barring gear are obtained, and the second torque value is calculated through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the meshing position of the torque-measuring barring gear and the preset rated load capacity; according to the embodiment, the second moment value is directly calculated through the moment calculation formula according to the parameters of the traction sheave and the parameters of the force-measuring moment barring gear, so that the second moment value can be quickly determined.
Referring to fig. 6, fig. 6 is a flow chart illustrating a fourth embodiment of the method for testing the braking performance of the elevator brake according to the present invention, and the fourth embodiment of the method for testing the braking performance of the elevator brake according to the present invention is provided based on the first embodiment illustrated in fig. 2.
In the fourth embodiment, the step S40 includes:
step S401: and judging whether the current state is in a preset state or not.
It should be understood that the determining whether the current state is in the preset state may be determining whether the current state is in a static state.
Step S402: and when the current state is in a preset state, judging that the braking performance of the elevator brake meets a preset standard.
It can be understood that when the current state is in a static state, the braking static moment of the elevator brake meets the requirement, namely the braking performance of the elevator brake meets the preset standard. The preset standard can be 12.4.2.1 pieces in the national standard elevator manufacturing and installation safety specification (GB7588-2003) and the braking capability of a single group of brakes required by 4.2.2.2 pieces in the national standard elevator traction machine (GB/T24478-2009).
Further, after the step S401, the method further includes:
step S402': and when the current state is not in a preset state, calculating a distance deviation value between the additional torque value and the second torque value according to a preset distance formula.
It should be noted that the preset distance formula may be any one of an euclidean distance formula, a weighted euclidean distance formula, a manhattan distance formula, and a threshold costas distance formula, which is not limited in this embodiment.
It can be understood that when the current state is not in the preset state, the applied torque value is over-large. In this case, it is necessary to reduce the applied torque value as close as possible to the second torque value. Therefore, the distance deviation value between the applied torque value and the second torque value can be calculated according to the preset distance formula.
Step S403': and adjusting the external torque value according to the distance deviation value to obtain a target torque value.
It should be understood that, adjusting the applied torque value according to the distance deviation value to obtain the target torque value may be determining a torque adjustment value according to the distance deviation value, and adjusting the applied torque value according to the torque adjustment value to obtain the target torque value.
It is understood that determining the torque adjustment value from the distance deviation value may be taking the distance deviation value directly as the torque adjustment value; or the distance deviation value is multiplied by a preset ratio to obtain a calculation result, and the calculation result is used as a moment adjustment value. The preset ratio may be 0.5, which is not limited in this embodiment.
Step S404': and determining the target moment of the traction sheave according to the direction of the applied moment and the target moment value.
It should be understood that because the moment is a vector, it has a direction and magnitude. Therefore, the target moment of the traction sheave can be directly determined according to the applied moment direction and the target moment value.
Step S405': and taking the target torque as a new external torque, executing the step of controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave.
It can be understood that the step of applying the additional torque to the traction sheave of the elevator, acquiring the current state of the traction sheave, and judging whether the braking performance of the elevator brake meets the preset standard according to the current state can be executed after the target torque is used as the new additional torque.
In the fourth embodiment, by judging whether the current state is in a preset state or not, when the current state is in the preset state, the braking performance of the elevator brake is judged to meet the preset standard, so that whether the braking performance of the elevator brake meets the preset standard or not can be accurately judged according to the current state of the traction sheave;
in a fourth embodiment, when the current state is not in a preset state, calculating a distance deviation value between the applied torque value and the second torque value according to a preset distance formula, adjusting the applied torque value according to the distance deviation value to obtain a target torque value, determining a target torque of the traction sheave according to the applied torque direction and the target torque value, taking the target torque as a new applied torque, and executing the step of controlling the elevator brake to enter a second operation mode, applying the applied torque to the traction sheave of the elevator, and obtaining the current state of the traction sheave; the embodiment updates the target torque through a preset distance formula, so that the braking performance of the elevator brake can be detected more accurately.
Furthermore, an embodiment of the present invention also provides a storage medium, on which a brake performance inspection program of an elevator brake is stored, which when executed by a processor implements the steps of the brake performance inspection method of an elevator brake as described above.
In addition, referring to fig. 7, an embodiment of the present invention further provides a braking performance testing apparatus for an elevator brake, including: a control module 10, an applied torque determination module 20, a torque application module 30, and a verification module 40;
the control module 10 is configured to control an elevator brake of the elevator to enter a first operating mode when the elevator is detected to be in an empty state.
It should be noted that the empty state may be a state in which the car of the elevator is not loaded at all. For example, no one or goods are in the car of the elevator;
the first operating mode may be that all of the elevator brakes are in a released state. For example, the elevator brake consists of an elevator brake a and an elevator brake B, and controlling the elevator brake of the elevator to enter the first operation mode can be that two groups of brakes are opened simultaneously by using a brake release wrench or an electric brake release device to be in a release state;
the released state may be that the brake shoe in the elevator brake is spread out completely out of engagement with the brake drum.
The applied torque determining module 20 is configured to obtain a turning moment value in the first operation mode, and determine an applied torque according to the turning moment value.
It should be understood that obtaining the turning moment value in the first operation mode and determining the external moment according to the turning moment value may be obtaining the turning moment value in the first operation mode, determining an elevator balance coefficient of the elevator according to the turning moment value, determining a first moment of a traction sheave of the elevator in the first operation mode according to the elevator balance coefficient, and determining the external moment of the traction sheave according to the first moment.
It should be noted that the turning moment value may be measured by a moment turning device.
It should be understood that the determining of the elevator balance coefficient of the elevator according to the barring moment value may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel steel wire rope groove and a pitch circle diameter of a moment-measuring barring device gear engagement part, and calculate the elevator balance coefficient of the elevator through an elevator balance coefficient formula according to the barring moment value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the moment-measuring barring device gear engagement part and a preset rated load capacity;
the formula of the elevator balance coefficient is as follows:
in the formula, k is the balance coefficient of the elevator, M is the turning moment value, R is the pitch circle diameter of the traction wheel gear, and R is1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
It can be understood that the specific meanings of the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel wire rope groove and the pitch circle diameter of the meshing part of the torque-measuring jigger gear are shown in the detection structure schematic diagram of fig. 3.
It is to be understood that the determining of the first moment of the traction sheave of the elevator in the first operating mode depending on the elevator balancing factor may be taking a first moment direction of the traction sheave of the elevator in the first operating mode, determining a first moment value of the traction sheave depending on the elevator balancing factor, and determining the first moment depending on the first moment direction and the first moment value.
It should be understood that the determining of the first moment value of the traction sheave according to the elevator balance coefficient may be obtaining a pitch circle diameter of a steel wire rope groove of the traction sheave, calculating the first moment value of the traction sheave through a first moment calculation formula according to the elevator balance coefficient, the pitch circle diameter of the steel wire rope groove of the traction sheave and a preset rated load weight, and determining the first moment according to the first moment direction and the first moment value;
the first moment value calculation formula is as follows:
M1＝k×Q×g×0.5×R1
in the formula, M1Is a first moment value, k is the balance coefficient of the elevator, Q is the preset rated load capacity, g is the gravity constant, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave.
It can be understood that the determining of the external torque of the traction sheave according to the first torque may be determining a second torque value according to the first torque value and a preset rated load capacity, regarding the first torque direction as an external torque direction, determining an external torque value according to the second torque value, and determining the external torque of the traction sheave according to the external torque direction and the external torque value.
It should be understood that the determining of the second torque value according to the first torque value and the preset rated load capacity may be to obtain a pitch circle diameter of a traction wheel gear, a pitch circle diameter of a traction wheel wire rope groove and a pitch circle diameter of a force-measuring barring gear meshing position, and calculate the second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel wire rope groove, the pitch circle diameter of the force-measuring barring gear meshing position and the preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
The torque applying module 30 is configured to control the elevator brake to enter a second operation mode, apply the applied torque to the traction sheave of the elevator, and obtain a current state of the traction sheave.
It should be noted that the second operation mode may be that one of the elevator brakes is in a released state and one of the elevator brakes is in a tightened state. For example, the elevator brake consists of an elevator brake A and an elevator brake B, and the control of the elevator brake to enter the second operation mode can be realized by releasing the elevator brake A by a brake releasing wrench so as to enable the elevator brake A to be in a released state; because all the operations of the method are tested under the condition that the elevator is powered off, the brake B is in a contracting brake/clasping state at the moment;
the elevator brake is controlled to enter the second operation mode, or the elevator brake B can be released by a brake releasing wrench to be in a released state; the elevator brake a is in a hugging state.
The holding state can be that the brake shoe in the elevator brake compresses tightly, holds the brake wheel completely tightly, and ensures that the motor does not rotate.
It should be understood that the brake releasing wrench releases the elevator brake A to enable the elevator brake A to be in a release state, because all operations of the method are tested under the condition that the elevator is powered off, at the moment, the elevator brake B is in a contracting brake/contracting state, and the brake performance of the elevator brake judged according to the current state is the brake performance of the elevator brake B; and the brake releasing spanner releases the elevator brake B, when the elevator brake B is in a released state, the brake A is kept in a tightly-holding state, and the brake performance of the elevator brake judged according to the current state is the brake performance of the elevator brake A.
And the checking module 40 is used for judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
It should be understood that the judgment of whether the braking performance of the elevator brake meets the preset standard according to the current state may be a judgment of whether the current state is in a preset state, and when the current state is in the preset state, the judgment of whether the braking performance of the elevator brake meets the preset standard;
or judging whether the current state is in a preset state, when the current state is not in the preset state, calculating a distance deviation value between the applied torque value and the second torque value according to a preset distance formula, adjusting the applied torque value according to the distance deviation value to obtain a target torque value, determining a target torque of the traction sheave according to the applied torque direction and the target torque value, and taking the target torque as a new applied torque.
It should be understood that the determining whether the current state is in the preset state may be determining whether the current state is in a static state.
When the current state is in a static state, the braking static moment of the elevator brake meets the requirement, namely the braking performance of the elevator brake meets the preset standard. The preset standard can be 12.4.2.1 in the national standard elevator manufacturing and installation safety code (GB7588-2003) and the braking capacity of a single set of brakes required by 4.2.2.2 in the national standard elevator traction machine (GB/T24478-2009).
And when the current state is not in the preset state, the external torque value is over large. In this case, it is necessary to reduce the applied torque value as close as possible to the second torque value. Therefore, the distance deviation value between the applied torque value and the second torque value can be calculated according to the preset distance formula.
It should be noted that the preset distance formula may be any one of an euclidean distance formula, a weighted euclidean distance formula, a manhattan distance formula, and a threshold costas distance formula, which is not limited in this embodiment.
It should be understood that, adjusting the applied torque value according to the distance deviation value to obtain the target torque value may be determining a torque adjustment value according to the distance deviation value, and adjusting the applied torque value according to the torque adjustment value to obtain the target torque value.
It is understood that determining the torque adjustment value from the distance deviation value may be taking the distance deviation value directly as the torque adjustment value; or the distance deviation value is multiplied by a preset ratio to obtain a calculation result, and the calculation result is used as a moment adjustment value. The preset ratio may be 0.5, which is not limited in this embodiment.
It should be understood that the step of applying the additional torque to the traction sheave of the elevator, acquiring the current state of the traction sheave, and determining whether the braking performance of the elevator brake meets a preset standard according to the current state may be performed after the target torque is used as a new additional torque.
Further, for ease of understanding, the following is exemplified:
the invention provides a method for testing the braking performance of an elevator brake, which comprises the following steps of:
(1) measuringRated load Q of lift car of certain gearless drive elevator, pitch circle diameter R of traction wheel gear, and pitch circle diameter R of traction wheel steel wire rope groove1The pitch circle diameter r at the meshing position of the force measuring rectangular barring gear;
(2) enabling the lift car of the elevator to be in an idle state, installing a force-measuring turning gear and keeping the force-measuring turning gear static, controlling all brakes to release, and obtaining a reading on the force-measuring turning gear, wherein the reading is recorded as M;
(3) calculating an elevator balance coefficient k:
(4) calculating the moment M of the weight difference between the counterweight side and the car side acting on the circle center of the traction sheave when the car is in no load1，M1＝k×Q×g×0.5×R1；
(5) Continuously keeping the lift car in an idle load state, installing a torque measuring barring gear, and controlling one group of brakes to release;
(6) calculating M2：M2Is equal to M1The sum of the moment and the moment is equivalent to the moment generated to the circle center of the traction sheave when the car is loaded with 1.25 times of rated load Q:
(7) applying a force M corresponding to the center of a circle to the traction sheave through the force measuring jigger device1The moment and the moment value in the same direction are more than M2Moment of (D), noted as M3；
(8) If the traction sheave still keeps the static state at the moment, the braking static moment of the group of brakes which are not released is indicated to meet the requirement;
(9) another set of brakes was tested in the same way.
In this embodiment, when an elevator is detected to be in an unloaded state, controlling an elevator brake of the elevator to enter a first operation mode, acquiring a barring torque value in the first operation mode, determining an external torque according to the barring torque value, controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, acquiring a current state of the traction sheave, and judging whether the braking performance of the elevator brake meets a preset standard according to the current state; in the embodiment, the external torque is determined according to the turning moment value in the first operation mode, the external torque is applied to the traction sheave of the elevator in the second operation mode, and whether the braking performance of the elevator brake meets the preset standard or not is judged according to the current state of the traction sheave, so that the braking performance of a single group of elevator brakes can be tested under the condition of no loading of test load, the testing time and cost are shortened, and the labor intensity and the safety risk are greatly reduced.
Other embodiments or specific implementation manners of the device for testing the braking performance of the elevator brake can refer to the method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be substantially implemented or a part contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for checking braking performance of an elevator brake, characterized in that the method for checking braking performance of an elevator brake comprises the steps of:
controlling an elevator brake of the elevator to enter a first running mode when the elevator is detected to be in an idle state;
acquiring a turning moment value in the first running mode, and determining an external moment according to the turning moment value;
controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave;
and judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
2. The method for checking braking performance of an elevator brake according to claim 1, wherein the step of obtaining a turning moment value in the first operation mode and determining an applied moment according to the turning moment value comprises:
acquiring a barring moment value in the first running mode, and determining an elevator balance coefficient of the elevator according to the barring moment value;
determining a first moment of a traction sheave of the elevator in the first operating mode according to the elevator balance coefficient;
and determining the external moment of the traction sheave according to the first moment.
3. The method for checking the braking performance of an elevator brake according to claim 2, wherein the step of determining the first moment of the traction sheave of the elevator in the first operating mode based on the elevator balance coefficient comprises:
obtaining a first torque direction of a traction sheave of the elevator in the first mode of operation;
determining a first moment value of the traction sheave according to the elevator balance coefficient, and determining a first moment according to the first moment direction and the first moment value.
4. The method for checking braking performance of an elevator brake according to claim 3, wherein the step of determining an applied torque of the traction sheave based on the first torque comprises:
determining a second torque value according to the first torque value and a preset rated load capacity;
taking the first moment direction as an external moment direction, and determining an external moment value according to the second moment value;
and determining the external moment of the traction sheave according to the external moment direction and the external moment value.
5. The method for checking the braking performance of an elevator brake according to claim 4, wherein the step of determining the second torque value according to the first torque value and a preset rated load capacity comprises:
acquiring the pitch circle diameter of a traction wheel gear, the pitch circle diameter of a traction wheel steel wire rope groove and the pitch circle diameter of a gear meshing part of a torque-measuring barring gear;
calculating a second torque value through a torque calculation formula according to the first torque value, the pitch circle diameter of the traction wheel gear, the pitch circle diameter of the traction wheel steel wire rope groove, the pitch circle diameter of the meshing position of the force-measuring torque barring gear and a preset rated load capacity;
the moment calculation formula is as follows:
in the formula, M2Is a second moment value, M1Is a first moment value, R is the pitch diameter of the traction wheel gear, R1Is the pitch circle diameter of the steel wire rope groove of the traction sheave, r is the pitch circle diameter of the meshing part of the gear of the force measuring rectangular barring gear, Q is the preset rated load capacity, and g is the gravity constant.
6. The method for checking the braking performance of the elevator brake according to claim 5, wherein the step of determining whether the braking performance of the elevator brake meets a preset standard according to the current state specifically comprises:
judging whether the current state is in a preset state or not;
and when the current state is in a preset state, judging that the braking performance of the elevator brake meets a preset standard.
7. The method of checking braking performance of an elevator brake according to claim 6, wherein after the step of determining whether the current state is in a preset state, the method of checking braking performance of an elevator brake further comprises:
when the current state is not in a preset state, calculating a distance deviation value between the additional torque value and the second torque value according to a preset distance formula;
adjusting the external torque value according to the distance deviation value to obtain a target torque value;
determining a target moment of the traction sheave according to the external moment direction and the target moment value;
and taking the target torque as a new external torque, executing the step of controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator, and acquiring the current state of the traction sheave.
8. A brake performance verifying apparatus of an elevator brake, characterized in that the brake performance verifying apparatus of the elevator brake comprises: memory, a processor and a brake performance testing program of an elevator brake stored on the memory and operable on the processor, which when executed by the processor implements the steps of the method of brake performance testing of an elevator brake according to any of claims 1 to 7.
9. A storage medium, characterized in that the storage medium has stored thereon a brake performance testing program of an elevator brake, which when executed by a processor implements the steps of the brake performance testing method of an elevator brake according to any one of claims 1 to 7.
10. A brake performance testing apparatus of an elevator brake, characterized by comprising: the device comprises a control module, an external torque determining module, a torque applying module and a checking module;
the control module is used for controlling an elevator brake of the elevator to enter a first running mode when the elevator is detected to be in an idle state;
the external torque determining module is used for acquiring a turning moment value in the first operation mode and determining an external torque according to the turning moment value;
the torque application module is used for controlling the elevator brake to enter a second operation mode, applying the external torque to a traction sheave of the elevator and acquiring the current state of the traction sheave;
and the inspection module is used for judging whether the braking performance of the elevator brake meets a preset standard or not according to the current state.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583121A (en) * | 2012-01-19 | 2012-07-18 | 李典伟 | Method for testing elevator balance coefficient by aid of elevator handwheel |
| CN105060053A (en) * | 2015-08-10 | 2015-11-18 | 沈阳市蓝光自动化技术有限公司 | Method for detecting balance coefficient of elevator |
| CN105480803A (en) * | 2016-01-22 | 2016-04-13 | 袁传森 | Portable tester for braking torque of elevator brake in use |
| CN106006267A (en) * | 2016-06-30 | 2016-10-12 | 无锡英威腾电梯控制技术有限公司 | Contracting brake force self-detection and contracting brake failure protection method for elevator and contracting brake force self-detection and contracting brake failure protection system for elevator |
| US20160304314A1 (en) * | 2013-12-19 | 2016-10-20 | Otis Elevator Company | Detection method for elevator brake moment |
| CN111217219A (en) * | 2020-01-08 | 2020-06-02 | 长沙纵横电梯工程有限公司 | Elevator braking torque detection method and detection device |
-
2020
- 2020-06-18 CN CN202010564240.XA patent/CN111717752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583121A (en) * | 2012-01-19 | 2012-07-18 | 李典伟 | Method for testing elevator balance coefficient by aid of elevator handwheel |
| US20160304314A1 (en) * | 2013-12-19 | 2016-10-20 | Otis Elevator Company | Detection method for elevator brake moment |
| CN105060053A (en) * | 2015-08-10 | 2015-11-18 | 沈阳市蓝光自动化技术有限公司 | Method for detecting balance coefficient of elevator |
| CN105480803A (en) * | 2016-01-22 | 2016-04-13 | 袁传森 | Portable tester for braking torque of elevator brake in use |
| CN106006267A (en) * | 2016-06-30 | 2016-10-12 | 无锡英威腾电梯控制技术有限公司 | Contracting brake force self-detection and contracting brake failure protection method for elevator and contracting brake force self-detection and contracting brake failure protection system for elevator |
| CN111217219A (en) * | 2020-01-08 | 2020-06-02 | 长沙纵横电梯工程有限公司 | Elevator braking torque detection method and detection device |
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