An automatic single-arm brake release test system for machine-room-less elevators

Abstract

This invention discloses an automatic single-arm brake release test system for machine-room-less elevators, comprising a main control board KL-MCD-02A, a main control interface board KL-MAD-02A, two test relays KBQ1 and KBQ2, a star-sealing contactor KMF, a running contactor KMY, a brake contactor KMB, and a door lock contactor KAD. A brake operation control circuit and a test circuit are formed through the series or parallel connection of the test relays KBQ1 and KBQ2, the star-sealing contactor KMF, the running contactor KMY, the brake contactor KMB, and the door lock contactor KAD. The main control board KL-MCD-02A and the main control interface board KL-MAD-02A control and test the brake operation control circuit and the test circuit. This invention meets the operational requirements of simultaneous release and disengagement of the brake during normal elevator operation, and also meets the requirement of releasing a single brake during testing for static or dynamic brake testing.

Description

Technical Field

[0001] This invention belongs to the field of elevator testing technology, specifically an automatic single-arm brake release test system for machine-room-less elevators. Background Technology

[0002] In machine-room-less elevators, the drive unit is located within the hoistway, while the brake is mounted on the drive unit. When the elevator stops, the brake's electromagnet coil de-energizes and engages the traction sheave, stopping the drive unit and ensuring the safe entry and exit of passengers. Insufficient braking force can lead to the elevator overshooting or undershooting, and may even cause shearing accidents when passengers are entering or exiting the car. Therefore, it is necessary to periodically verify the braking force of each brake to ensure its reliability. Currently, there are three main design methods and testing procedures. The first method involves using only one brake power control circuit for both sets of brakes. This means that the same brake contactor and power supply line simultaneously control the energization and de-energization of the electromagnet coils of both brakes. During verification, one maintenance worker manually releases one set of brakes by moving the release handle, while another person uses an operator on the control cabinet side to verify the braking force of the other set of brakes. The second method involves setting up only one brake power control circuit for both sets of brakes. After passing through the brake contactor, the brake power is split into two brake power ports using terminal plugs, and then split into two independent lines to power the two sets of brakes respectively. During testing, a test box is added. After power is off, one brake power box is directly connected to the brake power port on the test box. After power is restored, one set of brakes is released, and then the braking force of the other set of brakes is verified. The third method involves setting up two independent brake power control circuits for the two sets of brakes. That is, the energization and de-energization of the electromagnet coils of the two sets of brakes are independently controlled by two brake contactors and two brake power lines. During verification, maintenance personnel use an operator to access the test menu and select the corresponding test functions for testing.

[0003] The first design method and testing method can generally only be used to perform static testing of the double-arm system using an operator. If a single-arm test is to be performed, at least two people are required to operate it. One person enters the test mode first, and the other person releases the brake. Then the first person triggers the brake again. The two people need to cooperate with each other to complete the single-arm brake release and perform static and dynamic testing of the brake's single-arm braking force. If maintenance personnel need to enter the shaft to release the brake, the operation becomes even more inconvenient, the coordination becomes more difficult, and it is extremely dangerous.

[0004] The second design method and testing approach generally only allows for static testing of both brake arms using an operator. For single-arm testing, a test box needs to be prepared first. During testing, the brake power supply must be disconnected, then one brake power line in the control cabinet must be removed and connected to the test circuit in the test box. Afterward, the brake power switch in the control cabinet and the test relay in the test box must be switched on sequentially. Only then can the single-arm braking force static and dynamic tests be performed by releasing the brake. This method requires an additional test box and on-site wiring modifications, making the configuration and process complex, inconvenient to test, demanding high skill from maintenance personnel, and inefficient.

[0005] The third design method and testing method, compared to the first two methods, requires all tests to be performed on the operator, which is simpler in terms of operation. However, it requires the elevator to be equipped with two brake contactors as standard. During normal operation of the elevator, if any brake contactor malfunctions, it will cause the elevator to fail. Therefore, adding one contactor will also increase the overall failure rate of the elevator, and the configuration cost of adding one contactor is relatively high. Summary of the Invention

[0006] To address the problems of the above solutions, this invention provides an automatic single-arm brake release test system for machine-room-less elevators.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] An automatic single-arm brake release test system for a machine-room-less elevator includes a main control board KL-MCD-02A, a main control interface board KL-MAD-02A, two test relays KBQ1 and KBQ2, a star-sealing contactor KMF, a running contactor KMY, a holding brake contactor KMB, and a door lock contactor KAD.

[0009] By testing the series or parallel connection between relays KBQ1 and KBQ2, star-sealing contactor KMF, running contactor KMY, brake contactor KMB, and door lock contactor KAD, a brake running control circuit and a test circuit are formed.

[0010] The control and testing of the brake operation control circuit and test circuit are performed by the main control board KL-MCD-02A and the main control interface board KL-MAD-02A.

[0011] Furthermore, the brake operation control circuit:

[0012] One end of the brake power supply sequentially supplies power to the left end of the YBK2 electromagnet coil 2 through the normally open contacts 43-44 of the KMY running contactor, the normally open contacts 3L2-4T2 of the KAD door lock contactor, and the normally open contacts 2T1-1L1 and 3L2-4T2 of the KMB brake contactor. Then, it supplies power to the left end of the YBK2 electromagnet coil 2 through the normally closed contacts 1-9 of the KBQ1 brake test relay 1, and supplies power to the left end of the YBK1 electromagnet coil 1 through the normally closed contacts 1-9 of the KBQ2 brake test relay 2. The other end of the brake power supply supplies power to the right end of the YBK2 electromagnet coil 2 through the normally open contacts 5T1-6L1 of the KMB brake contactor, and then supplies power to the right end of the YBK2 electromagnet coil 2 through the normally closed contacts 2-10 of the KBQ1 brake test relay 1, and supplies power to the right end of the YBK1 electromagnet coil 1 through the normally closed contacts 2-10 of the KBQ2 brake test relay 2.

[0013] Furthermore, the brake test circuit:

[0014] One end of the brake power supply is first connected to the left end of YBK1 electromagnet coil 1 through the normally open contacts 43-44 of the KMF star-sealing contactor, and then through the normally closed contacts 3-11 of KBQ1 brake test relay 1 and the normally open contacts 5-9 of KBQ2 brake test relay 2; and then through the normally closed contacts 3-11 of KBQ2 brake test relay 2 and the normally open contacts 5-9 of KBQ1 brake test relay 1 to the left end of YBK2 electromagnet coil 2. The other end of the brake power supply is first connected to the right end of YBK1 electromagnet coil 1 through the normally open contacts 53-54 of the KMF star-sealing contactor, and then through the normally open contacts 6-10 of KBQ2 brake test relay 2; and then through the normally open contacts 6-10 of KBQ1 brake test relay 1 to the right end of YBK2 electromagnet coil 2.

[0015] Furthermore, during normal elevator operation, the energization and de-energization of the brake electromagnet coil are controlled only by the brake operation control circuit. Simultaneously, the normally closed contacts 21-22 of the KMY operating contactor, the normally closed contacts 21-22 of the KMB brake contactor, the normally closed contacts 21-22 of the KAD door lock contactor, the normally closed contacts 4-12 of the KBQ1 brake test relay 1, and the normally closed contacts 4-12 of the KBQ2 brake test relay 2 are respectively connected to the input points of the main board for detection. When the KMY and KMB input detection points are disconnected and there is no low-level input, the KAD input point has no low-level input, and SBQ1 and SBQ2 have low-level input, the elevator start logic is correctly determined, and the elevator starts and runs normally.

[0016] Furthermore, in the brake power supply test circuit, KBQ1 brake test relay 1 and KBQ2 brake test relay 2 are set to an interlock relationship. When a single-arm brake release test is required, one brake test relay is energized and switched from the brake operation control circuit during normal operation to the brake power supply test circuit, thus connecting one set of brake electromagnet coil brake power supplies. The other set remains in the brake operation control circuit during normal operation.

[0017] Furthermore, when the elevator needs to undergo a dual-arm braking force test, the main control board KL-MCD-02A controls the Y8 and Y9 relays on the main control interface board KL-MAD-02A to engage, simultaneously energizing the KBQ1 brake test relay 1 and the KBQ2 brake test relay 2. Contacts 1-9, 2-10, and 3-11 of the KBQ1 brake test relay 1 and the 1-9, 2-10, and 3-11 of the KBQ2 brake test relay 2 are all disconnected, cutting off all power supply circuits to the YBK1 and YBK2 electromagnet coils. Simultaneously, it is detected that the detection points input to KBQ1 and KBQ2 are disconnected and there is no low-level signal. After a voice prompt is broadcast inside the car, the elevator doors close and the car floor commands and hall call commands are blocked. The static test of the dual-arm braking force of brakes 1 and 2 is then performed first.

[0018] Furthermore, when the elevator needs to perform a single-arm test on brake 1, the Y8 relay on the main control board KL-MCD-02A controls the main control interface board KL-MAD-02A to engage, energizing the KBQ1 brake test relay. At this time, contacts 1-9 and 3-11 of the KBQ1 brake test relay 1 open, thereby cutting off the power supply test circuit to the left end of the YBK1 electromagnet coil 1. Contacts 2-10 of the KBQ1 brake test relay 1 open, thereby cutting off the power supply test circuit to the right end of the YBK1 electromagnet coil 1. The KBQ1 brake test... When contacts 5-9 and 6-10 of relay 1 are closed, KMF is activated, thereby connecting the brake power supply test circuit to supply power to the left and right ends of YBK2 electromagnet coil 2. After YBK2 electromagnet coil is energized, the brake arm of brake 2 is released. At the same time, the detection point of KBQ1 input is detected to be disconnected and there is no low level. After a voice reminder is broadcast in the car, the elevator door closes and blocks the car floor command and the hall call command. Then the elevator automatically performs a static test of the single-arm braking force of brake 1. Only after the single-arm static test is successfully verified can the dynamic test of the single-arm braking force of brake 1 be performed.

[0019] Furthermore, when the elevator needs to perform a single-arm test on brake 2, the Y9 relay on the main control board KL-MCD-02A controls the main control interface board KL-MAD-02A to engage, energizing the KBQ2 brake test relay. At this time, contacts 1-9 and 3-11 of the KBQ2 brake test relay 2 disconnect, thus cutting off the power supply test circuit to the left end of the YBK2 electromagnet coil 2. Contact 2-10 of the KBQ2 brake test relay 2 disconnects, thus cutting off the power supply test circuit to the right end of the YBK2 electromagnet coil 2. The KBQ2 brake test... When contacts 5-9 and 6-10 of relay 2 are closed, KMF is activated, thereby connecting the brake power supply test circuit to supply power to the left and right ends of YBK1 electromagnet coil 1. After YBK1 electromagnet coil is energized, the brake arm of brake 1 is released. At the same time, the detection point of KBQ2 input is detected to be disconnected and there is no low level. After a voice reminder is broadcast in the car, the elevator door closes and blocks the car floor command and the hall call command. Then the elevator automatically performs a static test of the single-arm braking force of brake 2. Only after the single-arm static test is successfully verified can the dynamic test of the single-arm braking force of brake 2 be performed.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention meets the operational requirements of simultaneous release and disengagement of the brake during normal elevator operation, and also meets the requirements for static or dynamic braking force testing by releasing a single brake during testing, without requiring rewiring when switching between the two.

[0022] 2. In the brake power supply test circuit of this invention, two test relays are interlocked so that when the elevator is undergoing brake testing, at most one brake is energized to release the brake, preventing accidental release of two sets of brakes due to operational errors and resulting in the elevator slipping.

[0023] 3. In the brake power supply test circuit of this invention, two pairs of normally open contacts of the star-sealing contactor are set. They will only close when the main board detects that the brake test relay is energized during the test, which can effectively prevent arcing when the test relay closes. When the elevator stops after the test, the main board first disconnects the output of the star-sealing contactor, that is, first disconnects the normally open contacts of the star-sealing contactor in the brake power supply test circuit to cut off the power supply to the brake, and then restores the brake test relay to prevent the test relay from arcing under load and causing damage to the relay contacts.

[0024] 4. When both test relays are open, this invention can cut off the power supply to all brakes, forcibly stopping the elevator. It can effectively prevent the elevator from slipping due to the relay contacts sticking together and outputting two brakes at the same time during the test.

[0025] 5. This invention can automatically perform static tests on both arms of the brake and static tests on one arm of the brake. Only after the test is successful can the brake be automatically released and the braking force of the other brake be dynamically tested by issuing a dynamic test command for the single arm braking force through the operator. The test is comprehensive and safe and reliable. In addition, no special test box is required. The configuration is simple and the operation is convenient. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the brake power supply circuit of the present invention;

[0028] Figure 2 This is a schematic diagram of the control and detection loop of the present invention. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 2 As shown, an automatic single-arm brake release test system for a machine-room-less elevator consists of a main control board KL-MCD-02A, a main control interface board KL-MAD-02A, two test relays KBQ1 and KBQ2, a sealing contactor KMF, a running contactor KMY, a brake contactor KMB, and a door lock contactor KAD. Two switchable brake power supply circuits are formed through the series and parallel connection of relay and contactor contacts to supply power to the elevator brake, meeting the operational requirements of simultaneous brake release during normal operation. During testing, only one set of brakes can be released at most to perform static or dynamic testing of the other set of brakes.

[0031] One of the brake power supplies on the output side of the machine-room-less elevator transformer is the brake operation control circuit during normal operation. One end of the brake power supply, O2, sequentially supplies power to the left end of the YBK2 electromagnet coil 2 through the normally open contacts 43-44 of the KMY running contactor, the normally open contact 3L2-4T2 of the KAD door lock contactor, and the normally open contacts 2T1-1L1 and 3L2-4T2 of the KMB brake contactor. Then, it supplies power to the left end of the YBK2 electromagnet coil 2 through the normally closed contacts 1-9 of the KBQ1 brake test relay 1, and supplies power to the left end of the YBK1 electromagnet coil 1 through the normally closed contacts 1-9 of the KBQ2 brake test relay 2. The other end of the brake power supply, O1, supplies power to the right end of the YBK2 electromagnet coil 2 through the normally open contact 5T1-6L1 of the KMB brake contactor, and then supplies power to the right end of the YBK2 electromagnet coil 2 through the normally closed contacts 2-10 of the KBQ1 brake test relay 1, and supplies power to the right end of the YBK1 electromagnet coil 1 through the normally closed contacts 2-10 of the KBQ2 brake test relay 2.

[0032] The other circuit of the brake power supply on the output side of the machine-room-less elevator transformer is a test circuit. One end of the brake power supply, 02, first passes through the normally open contacts 43-44 of the KMF star-sealing contactor, then through the normally closed contacts 3-11 of the KBQ1 brake test relay 1 and the normally open contacts 5-9 of the KBQ2 brake test relay 2, and is connected to the left end of the YBK1 electromagnet coil 1; it also passes through the normally closed contacts 3-11 of the KBQ2 brake test relay 2 and the normally open contacts 5-9 of the KBQ1 brake test relay 1, and is connected to the left end of the YBK2 electromagnet coil 2. The other end of the brake power supply, 01, first passes through the normally open contacts 53-54 of the KMF star-sealing contactor, then through the normally open contacts 6-10 of the KBQ2 brake test relay 2, and is connected to the right end of the YBK1 electromagnet coil 1; it also passes through the normally open contacts 6-10 of the KBQ1 brake test relay 1, and is connected to the right end of the YBK2 electromagnet coil 2.

[0033] When the elevator is running normally, KBQ1 brake test relay 1 and KBQ2 brake test relay 2 are in a de-energized state. Since contacts 5-9 and 6-10 of KBQ2 brake test relay 2 are both in an open state, the brake power supply test circuit cannot supply power to the left end of YBK1 electromagnet coil 1 through contacts 3-11 of KBQ1 brake test relay 1 and contacts 5-9 of KBQ2 brake test relay 2, nor can it supply power to the right end of YBK1 electromagnet coil 1 through contacts 6-10 of KBQ2 brake test relay 2. Similarly, since contacts 5-9 and 6-10 of KBQ1 brake test relay 1 are both in the open state, the brake power supply test circuit cannot supply power to the left end of YBK2 electromagnet coil 2 through contacts 3-11 of KBQ2 brake test relay 2 and contacts 5-9 of KBQ1 brake test relay 1, nor can it supply power to the right end of YBK2 electromagnet coil 2 through contacts 6-10 of KBQ1 brake test relay 1. The energization and de-energization of the brake electromagnet coil are controlled only by the brake operation control circuit composed of the KMY running contactor, KMB holding brake contactor, and KAD door lock contactor. At the same time, the normally closed contacts 21-22 of the KMY running contactor, the normally closed contacts 21-22 of the KMB holding brake contactor, the normally closed contacts 21-22 of the KAD door lock contactor, the normally closed contacts 4-12 of the KBQ1 brake test relay 1, and the normally closed contacts 4-12 of the KBQ2 brake test relay 2 are respectively connected to the input points of the main board for detection. Only when the KMY and KMB input detection points are disconnected and there is no low-level input, the KAD input point has no low-level input, and SBQ1 and SBQ2 have low-level input, can the elevator starting logic be determined correctly, and the elevator can start and run normally, thus ensuring the safety of the elevator during operation.

[0034] In the brake power supply test circuit, KBQ1 brake test relay 1 and KBQ2 brake test relay 2 are interlocked. When a single-arm brake release test is required, one brake test relay is energized, switching the power supply to one brake electromagnet coil from the normal brake operation control circuit to the brake power supply test circuit, thus connecting the brake power supply to one set of brake electromagnet coils. The other circuit remains in the normal brake operation control circuit. If both brake test relays are energized simultaneously, normally closed contacts 1-9, 2-10, and 3-11 of KBQ1 and KBQ2 brake test relays 1 and 2 respectively cut off all power supplies to YBK1 and YBK2 electromagnet coils.

[0035] When the elevator needs to undergo a dual-arm braking force test, the Y8 and Y9 relays on the main control board KL-MCD-02A control the main control interface board KL-MAD-02A to simultaneously energize the KBQ1 brake test relay 1 and the KBQ2 brake test relay 2. Contacts 1-9, 2-10, and 3-11 of both the KBQ1 and KBQ2 brake test relays are disconnected, cutting off all power supply circuits to the YBK1 and YBK2 electromagnet coils. Simultaneously, the system detects that there is no low-level signal at the disconnected detection points of KBQ1 and KBQ2. After a 30-second voice prompt in the car, the elevator doors close and the car floor commands and hall call commands are blocked, allowing for a static test of the dual-arm braking force of brakes 1 and 2.

[0036] When the elevator needs to perform a single-arm test on brake 1, the Y8 relay on the main control board KL-MCD-02A controls the main control interface board KL-MAD-02A to engage, energizing the KBQ1 brake test relay. At this time, contacts 1-9 and 3-11 of the KBQ1 brake test relay 1 open, thus cutting off the power supply test circuit to the left end of the YBK1 electromagnet coil 1. Contacts 2-10 of the KBQ1 brake test relay 1 open, thus cutting off the power supply test circuit to the right end of the YBK1 electromagnet coil 1. Contacts 5-9 and 6-10 close, then KMF is activated, connecting the brake power test circuit to supply power to the left and right ends of YBK2 electromagnet coil 2. After the YBK2 electromagnet coil is energized, the brake arm of brake 2 is released. Simultaneously, the system detects that the detection point input of KBQ1 is disconnected and has no low level. After a 30-second voice reminder is played in the car, the elevator door closes and blocks car floor commands and hall call commands. Then, the elevator automatically performs a static test of the single-arm braking force of brake 1. Only after the single-arm static test is successfully verified can the dynamic test of the single-arm braking force of brake 1 be performed. To ensure the safety of the elevator during testing, the dynamic test of the single-arm braking force can only be performed when someone is maintaining the elevator. That is, maintenance personnel need to use the "Dynamic Test of Single-Arm Braking Force of Brake 1" command in the operator's test menu to trigger brake 2 to automatically release the single arm and perform a dynamic test of the braking force of brake 1.

[0037] When the elevator needs to perform a single-arm test on brake 2, the Y9 relay on the main control board KL-MCD-02A controls the main control interface board KL-MAD-02A to engage, energizing the KBQ2 brake test relay. At this time, contacts 1-9 and 3-11 of the KBQ2 brake test relay 2 open, thus cutting off the power supply test circuit to the left end of the YBK2 electromagnet coil 2. Contact 2-10 of the KBQ2 brake test relay 2 opens, thus cutting off the power supply test circuit to the right end of the YBK2 electromagnet coil 2. Contacts 5-9 and 6-10 close, then KMF is activated, connecting the brake power test circuit to supply power to the left and right ends of YBK1 electromagnet coil 1. After YBK1 electromagnet coil is energized, the brake arm of brake 1 is released. Simultaneously, the system detects that the detection point of KBQ2 input is disconnected and has no low level. After a 30-second voice reminder is played in the car, the elevator door closes and blocks car floor commands and hall call commands. Then, the elevator automatically performs a static test of the single-arm braking force of brake 2. Only after the single-arm static test is successfully verified can the dynamic test of the single-arm braking force of brake 2 be performed. To ensure the safety of the elevator during testing, the dynamic test of the single-arm braking force can only be performed when someone is maintaining the elevator. That is, maintenance personnel need to use the "Dynamic Test of Single-Arm Braking Force of Brake 2" command in the operator's test menu to trigger brake 1 to automatically release the single arm and perform a dynamic test of the braking force of brake 2.

[0038] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A machine room-less elevator automatic single-arm brake release test system, characterized by, The main control board KL-MCD-02A, the main control interface board KL-MAD-02A, two test relays KBQ1 and KBQ2, the star contactor KMF, the running contactor KMY, the brake contactor KMB and the door lock contactor KAD are included. The brake running control loop and the test loop are formed by the series or parallel connection between the test relays KBQ1 and KBQ2, the star contactor KMF, the running contactor KMY, the brake contactor KMB and the door lock contactor KAD. The brake running control loop and the test loop are controlled by the main control board KL-MCD-02A and the main control interface board KL-MAD-02A. The brake running control loop: The left end of the YBK2 electromagnet coil 2 is powered by the 1-9 normally closed contact of the KBQ1 brake test relay 1 and the left end of the YBK1 electromagnet coil 1 is powered by the 1-9 normally closed contact of the KBQ2 brake test relay 2 through the 43-44 normally open contact of the KMY running contactor, the 3L2-4T2 normally open contact of the KAD door lock contactor, the 2T1-1L1 and 3L2-4T2 normally open contact of the KMB brake contactor, and the right end of the YBK2 electromagnet coil 2 is powered by the 2-10 normally closed contact of the KBQ1 brake test relay 1 and the right end of the YBK1 electromagnet coil 1 is powered by the 2-10 normally closed contact of the KBQ2 brake test relay 2 through the 5T1-6L1 normally open contact of the KMB brake contactor.

2. The automatic single-arm brake releasing test system for roomless elevator according to claim 1, characterized in that, The brake test loop: The left end of the YBK1 electromagnet coil 1 is connected to the 3-11 normally closed contact of the KBQ1 brake test relay 1 and the 5-9 normally open contact of the KBQ2 brake test relay 2 through the 43-44 normally open contact of the KMF star contactor, and the left end of the YBK2 electromagnet coil 2 is connected to the 3-11 normally closed contact of the KBQ2 brake test relay 2 and the 5-9 normally open contact of the KBQ1 brake test relay 1, and the right end of the YBK1 electromagnet coil 1 is connected to the 6-10 normally open contact of the KBQ2 brake test relay 2 through the 53-54 normally open contact of the KMF star contactor, and the right end of the YBK2 electromagnet coil 2 is connected to the 6-10 normally open contact of the KBQ1 brake test relay 1.

3. The automatic single-arm brake release test system for a machine-room-less elevator according to claim 1, characterized in that, When the elevator is running normally, the on-off power of the brake electromagnet coil is controlled by the brake running control loop, and the 21-22 normally closed contact of the KMY running contactor, the 21-22 normally closed contact of the KMB brake contactor, the 21-22 normally closed contact of the KAD door lock contactor, the 4-12 normally closed contact of the KBQ1 brake test relay 1 and the 4-12 normally closed contact of the KBQ2 brake test relay 2 are connected to the input points of the main board for detection, and when the KMY and KMB input detection points are disconnected and have no low-level input, the KAD input point has no low-level input, and the SBQ1 and SBQ2 have low-level input, the elevator startup logic is correct, and the elevator starts running normally.

4. The machine room less elevator automatic single arm brake release test system according to claim 2, wherein, In the brake power test circuit, KBQ1 brake test relay 1 and KBQ2 brake test relay 2 are set in interlocking relationship, when single-arm brake test is needed, one brake test relay is energized to attract, the power supply of one brake electromagnet coil is switched from the brake running control circuit in normal operation to the brake power test circuit, a group of brake electromagnet coil brake power is turned on, and the other is still retained in the brake running control circuit in normal operation.

5. The machine room less elevator automatic single arm brake release test system according to claim 4, wherein, When the elevator needs to test the braking force of both arms, the main control panel KL-MCD-02A controls the Y8 relay and Y9 relay on the main control interface panel KL-MAD-02A to attract, so that KBQ1 brake test relay 1 and KBQ2 brake test relay 2 are energized at the same time; the 1-9 contact, 2-10 contact and 3-11 contact of KBQ1 brake test relay 1 and the 1-9 contact, 2-10 contact and 3-11 contact of KBQ2 brake test relay 2 are all disconnected, cutting off the power supply circuit of YBK1 electromagnet coil and YBK2 electromagnet coil; at the same time, the detection point of KBQ1 and KBQ2 input is detected to be disconnected without low-level signal, after the voice broadcast in the car reminds, the elevator closes the door and shields the car floor command and the hall call command, and then the static test of the braking force of brake 1 and brake 2 is carried out.

6. The machine room less elevator automatic single arm brake release test system according to claim 4, wherein, When the elevator needs to test the braking force of brake 1, the main control panel KL-MCD-02A controls the Y8 relay on the main control interface panel KL-MAD-02A to attract, so that KBQ1 brake test relay is energized, at this time, the 1-9 contact and 3-11 contact of KBQ1 brake test relay 1 are disconnected to cut off the power supply of the left end of YBK1 electromagnet coil 1 in the brake power test circuit, the 2-10 contact of KBQ1 brake test relay 1 is disconnected to cut off the power supply of the right end of YBK1 electromagnet coil 1 in the brake power test circuit, the 5-9 contact of KBQ1 brake test relay 1 is closed, and the 6-10 contact is closed, then KMF is actuated, so as to connect the power supply of the left end and the right end of YBK2 electromagnet coil 2 in the brake power test circuit, after YBK2 electromagnet coil is energized, the brake arm of brake 2 is released, at the same time, the detection point of KBQ1 input is detected to be disconnected without low-level, after the voice broadcast in the car reminds, the elevator closes the door and shields the car floor command and the hall call command, then the elevator automatically carries out the static test of the braking force of brake 1, and only after the single-arm static test is verified successfully, the dynamic test of the braking force of brake 1 is allowed. ​ 7. The machine room less elevator automatic single arm brake release test system according to claim 4, wherein, When the elevator needs to be tested for the single-arm brake 2, the main control board KL-MCD-02A controls the Y9 relay on the main control interface board KL-MAD-02A to be attracted to make the KBQ2 brake test relay energized. At this time, the 1-9 contact and the 3-11 contact of the KBQ2 brake test relay 2 are disconnected to cut off the brake power supply test loop to the left end of the YBK2 electromagnet coil 2, the 2-10 contact of the KBQ2 brake test relay 2 is disconnected to cut off the brake power supply test loop to the right end of the YBK2 electromagnet coil 2, the 5-9 contact and the 6-10 contact of the KBQ2 brake test relay 2 are closed, and then the KMF is actuated to connect the brake power supply test loop to the left end and the right end of the YBK1 electromagnet coil 1. After the YBK1 electromagnet coil is energized, the brake arm of the brake 1 is released, and at the same time, the detection point input by the KBQ2 is disconnected and has a low level. After the voice broadcast in the car is heard, the elevator closes the door and shields the car floor command and the hall call command. Then the elevator automatically performs the single-arm brake force static test of the brake 2. After the single-arm static test is verified to be successful, the single-arm brake force dynamic test of the brake 2 is allowed to be performed.

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