Elevator traction machine brake on-load reliability test device

Abstract

The utility model provides an elevator traction machine brake on-load reliability test device. The elevator traction machine brake on-load reliability test device comprises a control cabinet and a mechanical device. The control cabinet comprises a touch screen, a programmable controller, a programmable power supply and a frequency converter; the touch screen is interconnected with the programmable controller through a communication line, and the frequency converter is interconnected with the programmable controller through a communication line; the frequency converter is interconnected with the mechanical device through a power cable and an encoder communication line; the programmable power supply is interconnected with the programmable controller through a communication line; the mechanical device comprises a tested brake; the programmable power supply is connected with the tested brake through a cable to realize the opening and closing of the tested brake, and the device can satisfy a static load reliability test mode and a dynamic load reliability test mode. And secondly, the dynamic load reliability test mode further comprises a variable inertia dynamic load reliability test mode and a timing and constant-speed wear dynamic load reliability test mode, and the test device can realize automatic control of a process and automatic acquisition of test data.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator hoisting machine technical field, especially is a kind of elevator hoisting machine brake reliability test device with load. BACKGROUND

[0002] Elevator hoisting machine as the core security component of traction drive elevator, plays an important role to the safety and comfort of traction drive elevator.Brake as the braking component of elevator hoisting machine, has extremely important influence to the braking reliability and stability of traction drive elevator.

[0003] China Elevator Association released new verification standard "T / CEA 0033—2022 drive host brake reliability test method" on March 1, 2023, and drive host brake should meet the relevant provisions of GB / T7588.1 and TSG T7007—2022.The same brake can only carry out static load reliability test or dynamic load reliability test, or first carry out static load reliability test and then carry out dynamic load reliability test.The utility model is developed to respond to new standard, can first carry out static load reliability test and then carry out dynamic load reliability test, and the reliability and safety of elevator hoisting machine brake under load working condition are verified through laboratory test. SUMMARY

[0004] The utility model aims at providing a kind of elevator hoisting machine brake reliability test device, i.e.it can meet static load reliability test mode, also meet dynamic load reliability test mode.Secondly, dynamic load reliability test mode also includes two modes of variable inertia dynamic load reliability test and timing constant speed wear dynamic load reliability test, and test device can realize the automatic control of process and the automatic acquisition of test data.

[0005] To achieve the above object, the utility model is realized through the following technical scheme: a kind of elevator hoisting machine brake reliability test device, including control cabinet and mechanical device;Wherein: the control cabinet includes touch screen, programmable controller, program-controlled power supply and frequency converter;The touch screen is interconnected with the programmable controller by communication line, realizes the data interaction of the touch screen and the programmable controller;The frequency converter is interconnected with the programmable controller by communication line, realizes data interaction;The frequency converter is interconnected with the mechanical device by power cable and encoder communication line;The program-controlled power supply is interconnected with the programmable controller by communication line, realizes the data interaction of the program-controlled power supply and the programmable controller;The mechanical device includes test brake;The program-controlled power supply is connected with the test brake by cable, realizes the opening and closure of the test brake.

[0006] Further as improvement of the technical scheme of the utility model, the mechanical device further includes a driving host, a variable inertia device, a torque and rotating speed sensor, an elevator hoisting machine connecting flange, an elevator hoisting machine and multiple shaft couplings; the driving host is connected with the variable inertia device through the shaft couplings; the variable inertia device is connected with the torque and rotating speed sensor through the shaft couplings; the variable inertia device is connected with the elevator hoisting machine through the elevator hoisting machine connecting flange; the test brake is installed on the elevator hoisting machine; the driving host, the torque and rotating speed sensor and the test brake are connected with the control cabinet through power cables and communication cables respectively.

[0007] Further as improvement of the technical scheme of the utility model, the test brake is electrically connected with a brake microswitch; the programmable controller is electrically connected with the torque and rotating speed sensor and the brake microswitch through shielding cables respectively.

[0008] Further as improvement of the technical scheme of the utility model, the frequency converter is interconnected with the driving host through power cables and encoder communication lines.

[0009] Further as improvement of the technical scheme of the utility model, the mechanical device further includes a casting platform and a fastener; the driving host, the variable inertia device, the torque and rotating speed sensor and the elevator hoisting machine are all fixed on the casting platform through the fastener.

[0010] The utility model has the following beneficial effects:

[0011] The utility model provides a kind of elevator hoisting machine brake reliability test device under load, i.e.it can satisfy static load reliability test mode, also satisfy dynamic load reliability test mode.Secondly dynamic load reliability test mode also includes two kinds of mode of variable inertia dynamic load reliability test and timing constant speed wear dynamic load reliability test, test device can realize the automatic control of process and the automatic acquisition of test data, the reliability and safety of elevator hoisting machine brake under load working condition are verified by laboratory test. BRIEF DESCRIPTION OF DRAWINGS

[0012] Other features, objects and advantages of the utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 It is whole structure schematic diagram of the utility model a kind of elevator hoisting machine brake reliability test device under load;

[0014] Figure 2 It is static load reliability test mode flow chart schematic diagram of the utility model embodiment;

[0015] Figure 3The utility model discloses embodiment dynamic load reliability test mode in fixed time fixed speed wear dynamic load reliability test mode flow schematic diagram of mode.

[0016] Figure 4 The utility model discloses embodiment dynamic load reliability test mode in variable inertia dynamic load reliability test mode flow schematic diagram of mode.

[0017] In the drawing, 1 is control cabinet, 2 is mechanical device, 3 is brake micro-motion switch, 11 is touch screen, 12 is programmable controller, 13 is program-controlled power supply, 14 is frequency converter, 21 is the brake under test, 22 is drive host computer, 23 is variable inertia device, 24 is torque speed sensor, 25 is elevator traction machine connecting flange, 26 is elevator traction machine, 27 is shaft coupling, 28 is casting platform, 29 is fastener. DETAILED DESCRIPTION

[0018] The utility model will be described in detail below in combination with the drawings and specific embodiments, here with the illustrative embodiment of the utility model and the explanation is used to explain the utility model, but not as the limitation of the utility model.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0020] In the utility model, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0021] In addition, in the utility model, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that ordinary skilled persons in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0022] The utility model is further explained in detail below in combination with the drawings.

[0023] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of elevator hoisting machine brake load reliability test device, including control cabinet 1 and mechanical device 2;Wherein: the control cabinet 1 includes touch screen 11, programmable controller 12, program-controlled power supply 13 and frequency converter 14;The touch screen 11 is interconnected with the programmable controller 12 by communication line, realizes the data interaction of the touch screen 11 with the programmable controller 12;The frequency converter 14 is interconnected with the programmable controller 12 by communication line, realizes data interaction;The frequency converter 14 is interconnected with the mechanical device 2 by power cable and encoder communication line;The program-controlled power supply 13 is interconnected with the programmable controller 12 by communication line, realizes the data interaction of the program-controlled power supply 13 with the programmable controller 12;The mechanical device 2 includes test brake 21;The program-controlled power supply 13 is connected with the test brake 21 by cable, realizes the opening and closure of the test brake 21.The utility model can satisfy static load reliability test mode, also satisfy dynamic load reliability test mode.Secondly dynamic load reliability test mode also includes two modes of variable inertia dynamic load reliability test and timing constant speed wear dynamic load reliability test, and test device can realize the automatic control of flow and the automatic acquisition of test data, and the reliability and safety of elevator hoisting machine brake under load working condition are verified through laboratory test.

[0024] Specifically, in the embodiment, the mechanical device 2 further includes a drive host 22, a variable inertia device 23, a torque and speed sensor 24, an elevator hoisting machine connecting flange 25, an elevator hoisting machine 26, and a plurality of shaft couplings 27; the drive host is connected with the variable inertia device 23 through the shaft couplings 27; the variable inertia device 23 is connected with the torque and speed sensor 24 through the shaft couplings 27; the variable inertia device 23 is connected with the elevator hoisting machine 26 through the elevator hoisting machine connecting flange 25; the test brake 21 is installed on the elevator hoisting machine 26; the drive host 22, the torque and speed sensor 24, and the test brake 21 are connected with the control cabinet 1 through power cables and communication cables respectively.

[0025] Specifically, in the embodiment, the test brake 21 is electrically connected with a brake microswitch 3; the programmable controller 12 is electrically connected with the torque and speed sensor 24 and the brake microswitch 3 through shield cables respectively.

[0026] Specifically, in the embodiment, the frequency converter 14 is interconnected with the drive host 22 through power cable and encoder communication line.

[0027] Specifically, in the embodiment, the mechanical device 2 further comprises a casting platform 28 and fasteners 29; the drive host 22, the variable inertia device 23, the torque and speed sensor 24 and the elevator hoisting machine 26 are all fixed on the casting platform 28 through the fasteners 29.

[0028] Embodiment:

[0029] 1. An elevator hoisting machine brake load reliability test device, comprising static load reliability test and dynamic load reliability test;

[0030] 2. The dynamic load reliability test further comprises two modes of variable inertia dynamic load reliability test and timing and constant speed wear dynamic load reliability test.

[0031] 3. The elevator hoisting machine brake load reliability test device is composed of a control cabinet 1 and a mechanical device 2.

[0032] 4. The control cabinet 1 is composed of a touch screen 11, a programmable controller 12, a program-controlled power supply 13, a frequency converter 14 and commonly used electrical components.

[0033] 5. The touch screen 11 provides a man-machine interface for the elevator hoisting machine brake dynamic life test device, which can set test device parameters, display test device states and graphical curves, etc. The test parameter setting is an open setting interface, which can meet the needs of setting different parameters for different products or verifying different working conditions for the same product. The touch screen 11 is interconnected with the programmable controller through communication lines to realize data interaction between the touch screen 11 and the programmable controller.

[0034] 6. The frequency converter 14 is the driving unit of the elevator hoisting machine brake dynamic life test device, which can control the drive host 22 according to the set parameters and selected test mode, realize the control of speed, torque and running direction of the elevator hoisting machine brake dynamic life test device. The frequency converter 14 is interconnected with the programmable controller 12 through communication lines to realize data interaction; the frequency converter 14 is interconnected with the drive host 22 through power cables and encoder communication lines.

[0035] 7. The program-controlled power supply 13 is mainly used for controlling the on-off of the test brake 21, and controls the action of the brake through the program-controlled power supply 13 to simulate the corresponding current or voltage curve. The program-controlled power supply 13 is interconnected with the programmable controller 12 through communication lines to realize data interaction between the program-controlled power supply 13 and the programmable controller 12; the program-controlled power supply 13 is connected with the test brake 21 through cables to realize the opening and closing of the brake.

[0036] 8. Programmable controller 12 controls the whole system, including management, automatic process control, data processing and data recording. Programmable controller 12 is connected with touch screen 11, frequency converter 14 and program-controlled power supply 13 through communication lines to realize data interaction. Programmable controller 12 is connected with torque and speed sensor 24 and brake micro switch 3 through shielded cable to realize reading of torque, speed and brake action times of the experimental device.

[0037] 9. Mechanical device 2 is composed of drive host 22, variable inertia device 23, torque and speed sensor 24, elevator hoisting machine connecting flange 25, elevator hoisting machine 26, test brake 21, shaft coupling 27, casting platform 28 and related fasteners 29.

[0038] Working principle:

[0039] Drive host 22, variable inertia device 23, torque and speed sensor 24, elevator hoisting machine connecting flange 25, elevator hoisting machine with test brake 21 are connected in series through shaft coupling 27, and are fixed on casting platform 28 with related fasteners 29; drive host 22, torque and speed sensor 24 and test brake 21 are connected with control cabinet 1 through power cable and communication cable; the inertia of variable inertia device 23 is adjusted according to different brake specifications and the current test mode; mechanical device 2 is installed to complete the establishment of elevator hoisting machine brake load reliability test device.

[0040] The test device is powered on, test mode selection and test parameter setting are performed through touch screen 11, manual operation is performed for at least 5 cycles in manual operation mode to ensure the accuracy of operation process and the firmness and reliability of each component connection, the control system is turned off, automatic operation mode is started, and the test device will automatically operate and automatically collect data according to the selected mode in the three test modes as shown in Figures 2-4 , wherein:

[0041] Referring to Figure 2 , the first test mode is:

[0042] 1. Brake holding;

[0043] 2. Drive host output positive torque T for duration S1;

[0044] 3. Drive host stops torque output for duration S2;

[0045] 4. Brake release, read micro switch action;

[0046] 5. Brake holding;

[0047] 6. Drive host output negative torque T for duration S1;

[0048] 7. The drive host stops the torque output, duration S2;

[0049] 8. The brake releases, the micro switch action is read;

[0050] 9. The drive host stops, the test ends

[0051] Set parameters: T, S1, S2.

[0052] Reference Figure 3 , the second test mode:

[0053] 1. The brake releases;

[0054] 2. The drive host runs forward, the running speed n;

[0055] 3. The brake engages, the running speed is zero;

[0056] 4. The brake releases, the micro switch action is read, the duration S2; 5. The drive host runs backward, the running speed n;

[0057] 6. The brake engages, the running speed is zero;

[0058] 7. The brake releases, the micro switch action is read, the duration S2; 8. The drive host stops, the test ends;

[0059] Set parameters: n, S1, s2.

[0060] Reference Figure 4 , the third test mode:

[0061] 1. The brake releases;

[0062] 2. The drive host runs forward, the running speed n;

[0063] 3. The brake engages, the running speed is zero;

[0064] 4. The brake releases, the micro switch action is read;

[0065] 5. The drive host runs backward, the running speed n;

[0066] 6. The brake engages, the running speed is zero;

[0067] 7. The brake releases, the micro switch action is read;

[0068] 8. The drive host stops, the test ends;

[0069] Set parameters: n.

[0070] Variable inertia calculation

[0071] 1. Equivalent inertia Jn of the rotating components of the system

[0072] Jn = JT + Jpcar + Jpcwt

[0073] In the formula:

[0074] Jn – the equivalent inertia of the rotating components of the system, expressed in kilograms per square meter (kg·m). 2 JT – Moment of inertia of the driving unit, in kilograms per square meter (kg·m). 2 Jpcar – Equivalent inertia of the car side pulley, expressed in kilograms per square meter (kg·m²). 2 Jpcwt – Equivalent moment of inertia of the counterweight pulley, in kilograms per square meter (kg·m²) 2 ).

[0075] 2. The equivalent inertia Jx of the linear motion components of the system

[0076]

[0077] In the formula:

[0078] Jx – the equivalent inertia of the linear motion components of the system, expressed in kilograms per square meter (kg·m). 2 Mcar – Car-side system mass, in kilograms (kg);

[0079] Mcwt – the mass of the system on the heavier side, expressed in kilograms (kg);

[0080] Q – Rated load capacity, in kilograms (kg);

[0081] Dt – traction sheave diameter, in meters (m);

[0082] r – suspension ratio;

[0083] 3. Total equivalent moment of inertia J

[0084] J = Jn + Jx

[0085] In the formula:

[0086] J – Total equivalent moment of inertia, expressed in kilograms per square meter (kg·m). 2 );

[0087] 4. Variable inertia Jk

[0088] Jk = J - JQ

[0089] In the formula:

[0090] Jk – Variable moment of inertia, measured in kilograms per square meter (kg·m) 2 );

[0091] JQ - drive machine rotational inertia, in kilograms square meters (kg·m 2 ).

[0092] In summary, the elevator hoisting machine brake load reliability test device is developed for the new verification standard “T / CEA0033—2022 Drive Main Machine Brake Load Reliability Test Method” published by China Elevator Association on March 1, 2023, which can first conduct static load reliability test and then conduct dynamic load reliability test, and verify the reliability and safety of the elevator hoisting machine brake under the load working condition through laboratory test.

[0093] The technical solutions provided by the embodiments of the utility model are described in detail above, and the principles and implementation manners of the embodiments of the utility model are described by applying specific examples; the description of the above embodiments is only applicable to helping understand the principles of the embodiments of the utility model; meanwhile, for those skilled in the art, the embodiments of the utility model will have changes in specific implementation manners and application ranges, and the content of the description should not be understood as a limitation on the utility model.

Claims

1. An elevator hoist machine brake on-load reliability test device comprising a control cabinet and a mechanical device; characterized in that: The control cabinet comprises a touch screen, a programmable controller, a program-controlled power supply and a frequency converter; the touch screen is interconnected with the programmable controller through a communication line to realize data interaction between the touch screen and the programmable controller; the frequency converter is interconnected with the programmable controller through a communication line to realize data interaction; the frequency converter is interconnected with the mechanical device through a power cable and an encoder communication line; the program-controlled power supply is interconnected with the programmable controller through a communication line to realize data interaction between the program-controlled power supply and the programmable controller; the mechanical device comprises a test brake; the program-controlled power supply is connected with the test brake through a cable to realize opening and closing of the test brake.

2. The elevator hoist machine brake on-load reliability test device of claim 1, wherein: The mechanical device further comprises a drive host, a variable inertia device, a torque and speed sensor, an elevator traction machine connecting flange, an elevator traction machine and a plurality of shaft couplings; the drive host is connected with the variable inertia device through the shaft couplings; the variable inertia device is connected with the torque and speed sensor through the shaft couplings; the variable inertia device is connected with the elevator traction machine through the elevator traction machine connecting flange; the test brake is installed on the elevator traction machine; the drive host, the torque and speed sensor and the test brake are respectively connected with the control cabinet through a power cable and a communication cable.

3. The elevator hoist machine brake on-load reliability test device of claim 2, wherein: The test brake is electrically connected with a brake microswitch; the programmable controller is electrically connected with the torque and speed sensor and the brake microswitch through a shielded cable.

4. The elevator hoist brake on-load reliability test apparatus of claim 2, wherein: The frequency converter is interconnected with the drive host through a power cable and an encoder communication line.

5. The elevator hoist brake on-load reliability test apparatus of claim 2, wherein: The mechanical device further comprises a casting platform and a fastener; the drive host, the variable inertia device, the torque and speed sensor and the elevator traction machine are all fixed on the casting platform through the fastener.

Images