Dynamic performance testing platform and method for elevator main shaft under variable torque and variable load working conditions

Abstract

The application provides a dynamic performance testing platform and method for an elevator main shaft under variable torque and variable load working conditions. The testing platform comprises a main shaft driving device module for driving the main shaft to operate under different rotating speed conditions, a torque load device module for applying torque load to the main shaft according to the load specifications and simulated working conditions of high-speed elevators, a main shaft testing device module for testing the main shaft, and a radial load device module for applying radial load to the main shaft. The modules in the testing platform of the application can simulate various working conditions of elevator hoisting machines, and the dynamic performance of the main shaft under different working conditions can be tested by the main shaft testing device module. Meanwhile, the modular design of the modules in the testing platform facilitates the replacement of the modules, and various working conditions of different testing main shafts can be simulated by changing the combination relationship of the modules and setting the parameters of the modules, so that the dynamic performance of the main shaft of the elevator hoisting machine under variable torque and variable load working conditions can be tested.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dynamic performance testing of high-speed elevators, and more particularly to a dynamic performance testing platform and method for a high-speed main shaft of an elevator under variable torque and variable load conditions. BACKGROUND

[0002] The main shaft of a high-speed elevator, as a core component of an elevator hoisting machine, slight failure of the main shaft assembly can cause abnormal noise or vibration of the hoisting machine, and serious failure can cause displacement of the traction sheave, thereby causing accelerated wear of the traction sheave groove, sliding of the traction rope out of the traction sheave groove, and other serious safety hazards to the use of the elevator. In particular, in a super-speed elevator, once a fracture or bearing damage occurs, it will directly lead to an elevator safety accident, with disastrous consequences. The conventional main shafts on the market are currently made of cast iron. Since there are a large number of detections in the casting process, they are often not detected after being installed in the high-speed elevator hoisting machine. However, the main shaft can be damaged during long-term high-speed use after being installed, resulting in a decrease in the strength of the main shaft or safety hazards. Therefore, it is of important practical significance to comprehensively analyze the performance and predict the service life of the main shaft assembly.

[0003] The main shaft of a high-speed elevator hoisting machine is a typical shaft part that bears torque and bending moment during long-term variable speed and variable load operation, and transmits the couple moment to the sheave through rotation. It has high rotation accuracy requirements. Due to the complexity of the working conditions, the working load and speed are frequently changed, and the fatigue damage is accumulated under unstable variable stress. Therefore, it is of great significance to study the characteristics of torque and bending moment of the main shaft assembly, as well as the relationship between temperature, vibration, speed and other factors, and to construct a dynamic performance testing system, device and method for the main shaft under variable torque conditions. As a key component of the hoisting machine, the high-speed main shaft lacks necessary detection and verification links in the prior art. In order to improve the safety of the elevator and the rationality of the structure design of the hoisting machine, it is necessary to test and analyze the dynamic performance of the main shaft of the elevator hoisting machine under variable torque and variable load conditions. SUMMARY

[0004] To solve the above problems or some of the problems in the prior art, the embodiments of the present application provide a dynamic performance testing platform and method for a high-speed main shaft of an elevator under variable torque and variable load conditions. The dynamic performance testing of the main shaft under different conditions is realized by changing the combination relationship of each module in the testing platform and setting the parameters of each module, and then the main shaft is comprehensively analyzed, evaluated and diagnosed.

[0005] According to a first aspect of the present application, embodiments of the present application provide a dynamic performance testing platform for a high-speed main shaft of an elevator under variable torque and load conditions, comprising: a main shaft driving device module connected to one end of a main shaft as a testing object, for driving the main shaft to operate under different rotating speed conditions; a torque load device module arranged on one side of the other end of the main shaft, for applying torque load to the main shaft according to the load specifications and simulated working conditions of the high-speed elevator; a main shaft testing device module arranged between the main shaft driving device module and the torque load device module, comprising a detection sensor for testing the main shaft; and a radial load device module arranged between the main shaft driving device module and the torque load device module and connected to the main shaft testing device module, for applying radial load to the main shaft according to the load specifications of the high-speed elevator.

[0006] According to the above-mentioned embodiments of the present application, the main shaft driving device module simulates the working conditions of the traction machine under different elevator operating speeds, the torque load device module simulates the application of torque load to the main shaft, and the radial load device module simulates the radial load borne by the elevator traction sheave, so that the working conditions of various elevator traction machines can be simulated, and the dynamic performance of the main shaft under different working conditions can be tested by the main shaft testing device module. At the same time, by modularizing the various devices in the testing platform, the testing platform can be easily replaced with modules, and by changing the combination relationship of the modules and setting the parameters of each module, various working conditions of different testing main shafts can be simulated, so that the dynamic performance of the main shaft of the elevator traction machine under variable torque and load conditions can be tested.

[0007] In some embodiments of the present application, the testing platform further comprises: a first movable platform for supporting the main shaft driving device module; a second movable platform for supporting the torque load device module, the radial load device module, and the main shaft testing device module; and the first movable platform is movable independently of the second movable platform.

[0008] According to the above-mentioned embodiments of the present application, by arranging the main shaft driving device module on the first movable platform which is movable independently of the second movable platform, the installation and replacement of the testing main shaft are facilitated.

[0009] In some embodiments of the present application, the main shaft testing device module comprises: a first bearing supporting the main shaft on one side close to the main shaft driving device module; a first bearing seat arranged on the second movable platform for supporting the first bearing; a second bearing supporting the main shaft on one side close to the torque load device module; a second bearing seat arranged on the second movable platform for supporting the second bearing; a pressure bearing sleeve arranged between the first bearing and the second bearing and connected with the radial load device module for simulating the radial load borne by the traction sheave of the high-speed elevator; and a shaft coupling connected with the other end of the main shaft.

[0010] In some embodiments of the present application, the detection sensor comprises: a rotating speed sensor, a temperature sensor, and a vibration sensor.

[0011] According to the above-mentioned embodiments of the present application, the rotating speed sensor, the temperature sensor, and the vibration sensor are arranged to monitor the key parameters such as the rotating speed, the temperature, and the vibration of the main shaft of the traction machine in real time, so that the staff can comprehensively analyze, evaluate, and diagnose the main shaft according to the collected data, thereby improving the rationality of the design of the traction machine and improving the safety and reliability of the elevator.

[0012] In some embodiments of the present application, the main shaft driving device module comprises: a driving motor arranged on the first movable platform for providing kinetic energy for the operation of the main shaft; a speed reducer connected with the driving motor and driving a transmission member mounted on the main shaft; and the transmission member connected with the main shaft and the speed reducer for driving the operation of the main shaft.

[0013] In some embodiments of the present application, the radial load device module comprises: a pressure mechanism arranged above the pressure bearing sleeve for generating kinetic energy for applying radial load to the main shaft; a pressure roller arranged below the pressure mechanism and connected with the pressure bearing sleeve for applying radial load to the main shaft through the pressure bearing sleeve; a mounting bracket arranged on the second movable platform for fixing the pressure mechanism and the pressure roller; and a pressure sensor arranged between the pressure mechanism and the pressure roller for obtaining the pressure value borne by the main shaft.

[0014] In some embodiments of the present application, the torque load device module is connected with the other end of the main shaft through the shaft coupling; the torque load device module comprises: a load mechanism for applying torque load to the main shaft; and a brake mechanism for controlling the stop of the operation of the main shaft.

[0015] According to a second aspect of the present application, the embodiments of the present application provide a method for testing dynamic performance of a high-speed spindle of an elevator under variable torque and load conditions by using the aforementioned test platform, which comprises: operating the spindle to a rated rotating speed by the spindle driving device module; applying a radial load to the spindle by the radial load device module, wherein the radial load is adjusted according to a total radial load of the high-speed elevator calculated according to a rated load of the high-speed elevator and an actual application scenario of the high-speed elevator; applying a torque load to the spindle according to a simulated working condition of the high-speed elevator by the torque load device module; and obtaining dynamic detection data of the spindle and generating an analysis chart by the spindle testing device module.

[0016] According to the above embodiments of the present application, by simulating various working conditions of different test spindles, dynamic performance of a spindle of an elevator traction machine under variable torque and load conditions is tested, and an analysis chart is generated, so that a staff member can directly observe the test results of the spindle according to the information of the analysis chart, and comprehensively analyze, evaluate and diagnose the spindle, so as to determine whether the test spindle meets the design requirements and the structure is reasonable according to relevant standards.

[0017] In some embodiments of the present application, the radial load is calculated by the following formula:

[0018]

[0019] wherein R is the radial load, R all is a total radial load of a traction machine of the high-speed elevator, R t is a traction ratio of the high-speed elevator.

[0020] The total radial load R all of the traction machine of the high-speed elevator is calculated by the following formula:

[0021] R all = P + Q + Q 载 + W r1 + W r2 + W r3 ;

[0022] Q 载 = P + q x Q

[0023] wherein P is a self weight of a car of the high-speed elevator, Q is a rated load of the high-speed elevator, q is a balance coefficient of the high-speed elevator, Q 载 is a load weight in the car of the high-speed elevator, W r1 is a weight of a traction steel wire rope of the high-speed elevator, W r2 is a weight of a compensation chain suspension of the high-speed elevator, and W r3 is a weight of a trailing cable suspension of the high-speed elevator.

[0024] According to a third aspect of the present application, the embodiments of the present application provide another method for testing the dynamic performance of the high-speed main shaft of an elevator under variable torque and load conditions by using the aforementioned test platform, which comprises: adjusting the radial load applied to the main shaft by the radial load device module and the radial load applied to the main shaft by the torque load device module according to the test requirements of the simulated working conditions; making the main shaft run under different rotating speed conditions by the main shaft driving device module; testing the running conditions of the main shaft under different rotating speed conditions by the main shaft testing device module, and obtaining the dynamic detection data of the main shaft by the detection sensor and generating analysis charts.

[0025] According to the above embodiments of the present application, by simulating various working conditions of different test main shafts, the dynamic performance of the main shaft of the elevator traction machine under variable torque and load conditions is tested, and analysis charts are generated, so that the test staff can directly observe the test information of the main shaft according to the analysis chart information, and comprehensively analyze, evaluate and diagnose the main shaft, so as to judge whether the test main shaft meets the design requirements and the structure is reasonable according to the relevant standards.

[0026] As can be seen from the above, by implementing the dynamic performance test platform and method for the high-speed main shaft of an elevator under variable torque and load conditions provided by the present application, various working conditions of different test main shafts can be simulated by changing the combination relationship of each module in the test platform and setting the parameters of each module, and the dynamic performance of the main shaft of the elevator traction machine under variable torque and load conditions is tested. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of a dynamic performance test platform for a high-speed main shaft of an elevator under variable torque and load conditions according to Embodiment 1 of the present application;

[0028] Figure 2 is a front view of the test platform shown in Figure 1

[0029] Figure 3 is a schematic view of the main shaft driving device module in the test platform shown in Figure 1

[0030] Figure 4 is a sectional view of the main shaft testing device module in the test platform shown in Figure 1

[0031] Figure 5 is a schematic view of the radial load device module in the test platform shown in Figure 1

[0032] Figure 6 is a schematic view of the torque load device module in the test platform shown in Figure 1 ​​​​A schematic view of the torque load device module in the test platform shown in the direction of B;

[0033] Figure 7 is a flowchart of a method for testing the dynamic performance of an elevator high-speed spindle under variable torque and load conditions using the test platform in Example 1 according to Example 2 of the present application;

[0034] Figure 8 is a screenshot showing the test results obtained by the test method according to Example 2 of the present application;

[0035] Figure 9 is a flowchart of a method for testing the dynamic performance of an elevator high-speed spindle under variable torque and load conditions using the test platform in Example 1 according to Example 3 of the present application. DETAILED DESCRIPTION

[0036] Various aspects of the present application are described in detail below in conjunction with the attached drawings and specific embodiments. It is to be understood that well-known modules, units, and their interconnection, linkage, communication, or operation are not shown or described in detail. Moreover, the described features, architectures, or functions can be combined in any manner in one or more embodiments. Those skilled in the art will understand that the various embodiments described below are only for illustration and not for limiting the scope of protection of the present application. It can also be readily understood that the modules or units or processing methods in the embodiments described herein and shown in the drawings can be combined and designed in various different configurations.

[0037] The terms used herein are briefly described below.

[0038] Traction ratio: the ratio of the peripheral speed of the traction sheave (the speed of the wire rope) to the speed of the car.

[0039]

Example 1

[0040] Example 1 of the present application provides a dynamic performance test platform for an elevator high-speed spindle under variable torque and load conditions, which includes the following modules: a spindle drive device module connected to one end of the spindle as the test object, for driving the spindle to operate under different rotational speed conditions; a torque load device module arranged on one side of the other end of the spindle, for applying torque load to the spindle according to the load specifications and simulated working conditions of the high-speed elevator; a spindle test device module arranged between the spindle drive device module and the torque load device module, including detection sensors for testing the spindle; and a radial load device module arranged between the spindle drive device module and the torque load device module and engaged with the spindle test device module, for applying radial load to the spindle according to the load specifications of the high-speed elevator.

[0041] The following is combined with Figures 1 to 6 One implementation of the testing platform provided by this discovery is described in detail. Figure 1 This is a three-dimensional schematic diagram of a dynamic performance testing platform for a high-speed elevator spindle under variable torque and load conditions according to Embodiment 1 of the present invention. Figure 2 yes Figure 1 The main view of the test platform shown; Figure 3 Is Figure 1 A schematic diagram of the spindle drive module in the test platform shown along direction A; Figure 4 Is Figure 1 A schematic cross-sectional view of the spindle testing device module along direction A in the test platform shown; Figure 5 Is Figure 1 A schematic diagram of the radial load device module in the test platform along direction B. Figure 6 Is Figure 1 A schematic diagram of the torque load device module in the test platform along direction B.

[0042] like Figure 1 and Figure 2 As shown, the test platform 1 used for dynamic performance testing of the spindle 30 includes:

[0043] The spindle drive module 11 is used to drive the spindle 30 to operate under different speed conditions.

[0044] The spindle testing device module 12 is used to perform dynamic performance testing on the spindle 30 under different working conditions and obtain test information.

[0045] Radial load device module 13 is used to apply radial load to the main shaft 30 according to the load specifications of the high-speed elevator;

[0046] Torque load device module 14 is used to apply torque load to the main shaft 30 according to the load specifications and simulated working conditions of the high-speed elevator.

[0047] And a first movable platform 21 for supporting the spindle drive module 11, and a second movable platform 22 for supporting the torque load device module 14, the radial load device module 13, and the spindle test device module 12.

[0048] As described above, the various devices in the test platform 1 are modularly designed, facilitating module replacement and allowing for the simulation of various working conditions of different test spindles by changing the combination relationship of each module and setting the parameters of each module, thereby realizing the testing of the dynamic performance of the elevator traction machine spindle under variable torque and load conditions. Furthermore, the first movable platform 21 can move independently of the second movable platform 22, facilitating the installation and replacement of the test spindle 30.

[0049] CombinationFigure 3 The main shaft driving device module 11 located on the first movable platform 21 comprises a driving motor 111, a speed reducer 112 and a transmission gear 113. The driving motor 111 located on the first movable platform 21 is used to provide kinetic energy for the operation of the main shaft 30. The speed reducer 112 is connected with the driving motor 111. The transmission gear 113 is connected with the driving motor 112 and one end 301 of the main shaft 30. The speed reducer 112 is used to reduce the rotation speed of the driving motor 111 to a suitable rotation speed. The transmission gear 113 is driven to rotate by the rotation of the speed reducer 112. The transmission gear 113 drives the main shaft 30 installed thereon to operate, so as to simulate the working condition of the traction machine at different elevator speeds. In an optional embodiment, the transmission gear 113 in the main shaft driving device module 11 can be replaced by a transmission member in the form of a belt or a chain.

[0050] In combination Figure 4 The main shaft testing device module 12 located on the second movable platform 22 comprises a first bearing 121, a first bearing seat 122, a second bearing 123, a second bearing seat 124, a pressure receiving shaft sleeve 125 and a shaft coupling 126. The first bearing 121 supports the main shaft 30 at a position close to the main shaft driving device module 11 (i.e. close to one end 301 of the main shaft 30). The first bearing seat 122 is arranged on the second movable platform 22 and supports the first bearing 121. The second bearing 123 supports the main shaft 30 at a position close to the torque load device module 14 (i.e. close to the other end 302 of the main shaft 30). The second bearing seat 124 is arranged on the second movable platform 22 and supports the second bearing 123. The pressure receiving shaft sleeve 125 is arranged between the first bearing 121 and the second bearing 123, and is used to simulate the radial load applied to the main shaft (since the traction sheave is installed on the main shaft, the final force is still on the main shaft, so the radial load applied to the main shaft is equivalent to the radial load received by the traction sheave). The shaft coupling 126 is connected with the other end 302 of the main shaft 30. The shaft coupling 126 can be replaced or adjusted in size and length, so as to adapt to different test main shafts.

[0051] In addition, the main shaft testing device module 12 further comprises Figure 1The detection sensor 127 shown in FIG. 1 is used to collect test information of the main shaft 30 under different working conditions. In some embodiments, the detection sensors in the main shaft test device module 12 can include, but are not limited to, a rotation speed sensor, a temperature sensor, and a vibration sensor. The rotation speed sensor can include, but is not limited to, a Hall sensor, a proximity sensor, an encoder, etc., and is used to measure the rotation speed of the main shaft 30. The temperature sensor can include, but is not limited to, an infrared temperature sensor, a thermocouple sensor, etc., and is used to measure the temperature of the main shaft 30 and the bearing seats 122 and 124. The vibration sensor can include, but is not limited to, a single-axis vibration sensor, a multi-axis vibration sensor, a temperature-vibration integrated sensor, etc., and is used to measure the vibration of the main shaft 30 during operation. In further embodiments, the detection sensors in the main shaft test device module 12 are installed in a movable magnetic or threaded manner, which facilitates the change of the positions of the sensors and enables the sensors to match different types of main shafts and accurately measure the data of specified points. Furthermore, by reading the vibration information collected by the vibration sensor and the frequency spectrum information collected by each sensor, the analysis, evaluation, and judgment of the state of the main shaft can be realized based on the collected data. The frequency spectrum information can include, but is not limited to, a speed spectrum, an amplitude spectrum, and an acceleration spectrum.

[0052] In other embodiments, the number and position of the bearings and bearing seats in the main shaft test device module 12 can be set according to the structure of the traction machine.

[0053] In combination with Figure 5 The radial load device module 13 located on the second movable platform 22 includes a pressing mechanism 131, a compression wheel 132, a mounting bracket 133, a pressure sensor 134, and a guide mechanism 135. The pressing mechanism 131 is arranged above the pressure receiving shaft sleeve 125 of the main shaft test device 12 and is used to generate kinetic energy to apply a radial load to the main shaft 30. The compression wheel 132 is arranged below the pressing mechanism 131 and is connected to the pressure receiving shaft sleeve 125, and is used to apply a radial load to the main shaft 30 through the pressure receiving shaft sleeve 125. The compression wheel 132 can be a rubber-coated roller. The mounting bracket 133 is arranged on the second movable platform 22 and is used to fix the pressing mechanism 131 and the compression wheel 132. The pressure sensor 134 is installed between the pressing mechanism 131 and the compression wheel 132 and is used to obtain the pressure value of the main shaft 30.

[0054] The radial load device module 13 applies a corresponding radial load to the test main shaft 30 through the pressing mechanism 131, the compression wheel 132, and the pressure receiving shaft sleeve 125. Since the traction wheel is installed on the main shaft, the radial load applied to the main shaft can simulate the radial load received by the traction wheel. The size of the radial load can be adjusted by the pressing mechanism 131 to realize the radial load test of the main shaft. In addition, the compression wheel 132 can rotate and dynamically apply a radial load for testing when the main shaft 30 rotates.

[0055] In some embodiments, the pressurizing mechanism 131 includes, but is not limited to, a servo cylinder, a hydraulic cylinder, a pneumatic cylinder, etc.

[0056] In combination Figure 1 and Figure 6 The torque load device module 14 located on the second movable platform 22 is connected with the coupling 126 of the main shaft test device 12, so as to connect the torque load device module 14 with the other end 302 of the main shaft 30 through the coupling 126. The torque load device module 14 includes a load mechanism 141 and a braking mechanism 142. The load mechanism 141 is used to apply a torque load to the main shaft 30, and the braking mechanism 142 is used to control the main shaft 30 to stop running.

[0057] In some embodiments, the load mechanism 141 includes, but is not limited to, a disc brake, a drum brake, a magnetic powder brake, an electromagnetic brake, etc. Moreover, the torque load applied by the load mechanism 141 to the main shaft 30 is adjustable, and different torque loads can be set according to the parameters of the traction machine to dynamically test the test main shaft.

[0058] By using the above test platform of the embodiments of the present application, the working conditions of the traction machine under different elevator running speeds are simulated by the main shaft driving device module, the torque load applied to the main shaft is simulated by the torque load device module, and the radial load borne by the elevator traction sheave is simulated by the radial load device module. Various working conditions of the elevator traction machine can be simulated, and the dynamic performance of the main shaft under different working conditions can be tested by the main shaft test device module. At the same time, by modularizing the various devices in the test platform, the test platform can be replaced with modules, and various working conditions of different test main shafts can be simulated by changing the combination relationship of the modules and setting the parameters of the modules, so as to test the dynamic performance of the main shaft of the elevator traction machine under the variable torque and variable load working conditions.

[0059]

Example 2

[0060] Figure 7 is a flowchart of a method for testing the dynamic performance of the high-speed main shaft of the elevator under the variable torque and variable load working conditions by using the test platform in Example 1 according to Example 2 of the present application.

[0061] As Figure 7 shown, in an embodiment of the present application, the test method can include steps S71, S72, S73 and S74, which are described in detail as follows.

[0062] In step S71, the main shaft is operated to the rated speed by the main shaft driving device module.

[0063] In step S72, a radial load is applied to the main shaft by the radial load device module, wherein the radial load is adjusted according to a total radial load of the high-speed elevator calculated according to a rated load of the high-speed elevator and an actual application scenario of the high-speed elevator.

[0064] In some embodiments, first, a total radial load of the traction machine of the high-speed elevator is calculated by the following formula (1):

[0065] R all = P + Q + Q 载 + W r1 + W r2 + W r3 ;

[0066] Q 载 = P + q x Q (1)

[0067] wherein P is the self-weight of the car of the high-speed elevator, Q is the rated load of the high-speed elevator, q is the balance coefficient of the high-speed elevator, Q 载 is the load weight in the car of the high-speed elevator, W r1 is the weight of the traction wire rope of the high-speed elevator, W r2 is the weight of the compensation chain suspension of the high-speed elevator, and W r3 is the weight of the accompanying cable suspension of the high-speed elevator.

[0068] Secondly, the radial load R applied to the main shaft by the radial load device module is calculated by the following formula (2):

[0069]

[0070] wherein R all is the total radial load of the traction machine of the high-speed elevator, and R t is the traction ratio of the high-speed elevator.

[0071] In step S73, a torque load is applied to the main shaft by the torque load device module according to the simulated working condition of the high-speed elevator.

[0072] In step S74, dynamic detection data of the main shaft is obtained by the main shaft testing device module and an analysis chart is generated.

[0073] Adopt the above test method of embodiment 2 of the present application, according to the actual application scene of high-speed elevator, the radial load and torque load of the main shaft of the traction machine are calculated, and the speed, radial load and torque load are set to the driving device module, radial load device module and torque load device respectively, the dynamic performance of the elevator main shaft is tested, and the speed, temperature and vibration curve of the main shaft in the dynamic performance test are obtained through the main shaft test device module, so that the test staff can directly observe the test results of the main shaft according to the analysis chart information, and the main shaft is comprehensively analyzed, evaluated and diagnosed, so as to verify the rationality and reliability of the traction machine structure and the main shaft design according to the relevant standards, and then the traction machine of the high-speed elevator is adjusted according to the evaluation and diagnosis results, so as to improve the safety of the elevator and ensure the safe and stable operation of the elevator.

[0074] The present application gives a specific step example of testing the dynamic performance of the high-speed main shaft of the elevator under the variable torque and variable load working condition according to the test method of embodiment 2, in this example, the modules in the test platform of embodiment 1 can be controlled through the software interface as shown in Figure 8 The specific steps of testing the dynamic performance of the high-speed main shaft of the elevator are as follows:

[0075] 1. Input the rated speed in the "speed" input box in the "parameter setting" area of the software interface;

[0076] 2. Input the radial total bearing pressure value calculated according to the rated load and the actual application scene of the elevator in the "radial load" input box in the "parameter setting" area of the software interface;

[0077] 3. Input the alarm value in the "alarm value" input box in the "parameter setting" area of the software interface, and the alarm value can also not be set;

[0078] 4. Click the "start" button of the software interface, so that each device of the test platform works at the preset speed, radial load, and records the running time;

[0079] 5. According to the torque value corresponding to the required test working condition (such as elevator empty load, elevator full load and other working conditions), manually adjust the required torque load value on the operation table of the test platform;

[0080] 6. The speed, load, temperature of the monitoring point, vibration and frequency spectrum of the three axes of the current main shaft are displayed in real time in the software interface, and real-time curves are generated, wherein the three axes refer to the x-axis, y-axis and z-axis of the main shaft, and the frequency spectrum includes but is not limited to speed spectrum, amplitude spectrum and acceleration spectrum;

[0081] 7. When the speed, load and temperature exceed the preset alarm value, "running normally" in the software interface will change to "running abnormally" to remind the tester;

[0082] 8. Click the "Stop" button to pause the device;

[0083] 9. After this operation is completed, click the "Reset" button. The device will stop working, and the test will be completed.

[0084] 10. After the experiment is completed, click the "Export" button to create a historical data document of the experiment and save it.

[0085] 11. When you need to view the process of a certain experiment, click the "Import" button to retrieve historical data and view the historical experiment process.

[0086] The above test method was used to obtain the following results: Figure 8 The screenshot of the displayed test results is as follows: Figure 8 As shown, the monitoring page of the software interface includes a parameter setting area, a speed display area, a temperature display area, a vibration display area for different monitoring points, a spectrum display area, a test platform model diagram display area for displaying the distribution of monitoring points, and a display area for displaying the spindle operating status.

[0087]

Example 3

[0088] Figure 9 This is a flowchart illustrating a method for testing the dynamic performance of an elevator high-speed spindle under variable torque and load conditions using the test platform described in Embodiment 1, according to Embodiment 3 of the present invention.

[0089] like Figure 9 As shown, in one embodiment of the present invention, the testing method may include steps S91, S92 and S93, which are described in detail below.

[0090] In step S91, the radial load applied to the spindle by the radial load device module and the radial load applied to the spindle by the torque load device module are adjusted according to the test requirements of the simulated working conditions. Examples of simulated working conditions include start-up, stable operation, and emergency braking.

[0091] In step S92, the spindle is operated at different speeds by the spindle drive module.

[0092] In step S93, the spindle is tested under different speed conditions by the spindle testing device module, and the dynamic detection data of the spindle is acquired by the detection sensor and an analysis chart is generated.

[0093] The application gives a specific step example of testing the dynamic performance of the elevator high-speed spindle under the variable torque and variable load working condition according to the test method of embodiment 3, in the example, each module in the test platform of embodiment 1 can be controlled through the software interface in communication therewith. The specific steps of testing the dynamic performance of the elevator high-speed spindle are as follows:

[0094] 1. Input the radial total bearing pressure value calculated according to the rated load and the actual application scene of the elevator in the "radial load" input box in the "parameter setting" area of the software interface;

[0095] 2. Input the torque value corresponding to the required test working condition (such as the elevator empty load and full load working condition) in the "torque load" input box in the "parameter setting" area of the software interface;

[0096] 3. Input each alarm value in the "alarm value" input box in the "parameter setting" area of the software interface, and the alarm value can also not be set;

[0097] 4. Click the "start" button of the software interface, so that each device of the test platform works according to the preset radial load and torque load, and records the running time;

[0098] 5. Manually adjust the required speed value on the operation table of the test platform;

[0099] 6. The current speed, load, temperature of the monitoring point, vibration and frequency spectrum of the three axes are displayed in real time in the software interface, and real-time curves are generated;

[0100] 7. When the speed, load and temperature exceed the preset alarm value, "running normally" in the software interface will become "running abnormally" to remind the tester;

[0101] 8. Click the "stop" button to pause the device;

[0102] 9. When the running work is completed, click the "reset" button, the device stops working, and the test is completed;

[0103] 10. After the test is completed, click the "export" button to form a historical data document of the test process and save it;

[0104] 11. When it is necessary to view a test process, click the "import" button to call the historical data and view the historical test process.

[0105] The above test method can simulate various working conditions of different test shafts, realize the test of the dynamic performance of the elevator traction machine shaft under the variable torque and variable load working condition, and generate analysis charts, so that the test results of the shaft can be directly observed according to the analysis chart information by the staff, and the shaft is comprehensively analyzed, evaluated and diagnosed, so as to judge whether the test shaft meets the design requirements and the structure is reasonable according to the relevant standards.

[0106] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be realized by means of software combined with a hardware platform. Based on such understanding, all or part of the technical solutions of the present application that contribute to the background art can be embodied in the form of a software product. The computer software product can be stored in a storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method described in each embodiment or some part of the embodiment of the present application.

[0107] Correspondingly, the present application also provides a computer readable storage medium having computer readable instructions or programs stored thereon, wherein the computer readable instructions or programs are executed by a processor to cause a computer to perform the following operations: the operations include the steps included in the test method according to any one of the above embodiments, which will not be repeated here. The storage medium can include, for example, an optical disk, a hard disk, a floppy disk, a flash memory, a magnetic tape, etc.

[0108] In addition, the present application also provides a computer device including a memory and a processor, wherein the memory is used to store one or more computer readable instructions or programs, and the one or more computer readable instructions or programs are executed by the processor to realize the test method according to any one of the above embodiments. The computer device can be, for example, a server, a desktop computer, a notebook computer, a tablet computer, etc.

[0109] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. Therefore, the protection scope of the present application should be subject to the claims.

Claims

1. A dynamic performance testing platform suitable for elevator high-speed spindles under variable torque and load conditions, characterized in that, The testing platform includes the following modules: A spindle drive module is connected to one end of the spindle, which is the test object, and is used to drive the spindle to operate under different speed conditions. A torque load device module is located on one side of the other end of the main shaft, and is used to apply a torque load to the main shaft according to the load specifications of the high-speed elevator and the simulated working conditions. A spindle testing device module, disposed between the spindle drive device module and the torque load device module, includes detection sensors for testing the spindle; and A radial load device module is disposed between the main shaft drive device module and the torque load device module and is engaged with the main shaft test device module for applying radial load to the main shaft according to the load specifications of the high-speed elevator. A first movable platform is used to support the spindle drive module; The second movable platform is used to support the torque load device module, the radial load device module, and the spindle testing device module; The first mobile platform can move independently of the second mobile platform; The radial load device module located on the second movable platform includes a pressurizing mechanism and a pressure roller. The pressurizing mechanism is positioned above the pressure-bearing bushing of the spindle testing device and is used to generate kinetic energy to apply a radial load to the spindle. The pressure roller is positioned below the pressurizing mechanism and connected to the pressure-bearing bushing, and is used to apply a radial load to the main shaft through the pressure-bearing bushing.

2. The testing platform as described in claim 1, characterized in that, The spindle testing device module includes: A first bearing supports the spindle on the side closest to the spindle drive module; A first bearing housing is disposed on the second movable platform for supporting the first bearing; The second bearing supports the main shaft on the side closest to the torque load device module; The second bearing housing is disposed on the second movable platform and is used to support the second bearing; A pressure bushing, which is disposed between the first bearing and the second bearing and connected to the radial load device module, is used to simulate the radial load borne on the traction sheave of the high-speed elevator. A coupling that connects to the other end of the main shaft.

3. The testing platform as described in claim 2, characterized in that, The detection sensors include: a speed sensor, a temperature sensor, and a vibration sensor.

4. The testing platform as described in claim 1, characterized in that, The spindle drive module includes: A drive motor, which is mounted on the first movable platform, is used to provide kinetic energy to rotate the spindle; A speed reducer, which is connected to the drive motor and drives the transmission components mounted on the main shaft; The transmission component is connected to the main shaft and the reducer, and is used to drive the main shaft to operate.

5. The testing platform as described in claim 2, characterized in that, The radial load device module includes: A pressurizing mechanism, which is disposed above the pressurized bushing, is used to generate kinetic energy to apply a radial load to the main shaft; A pressure roller, which is disposed below the pressurizing mechanism and connected to the pressure-bearing bushing, is used to apply a radial load to the main shaft through the pressure-bearing bushing; A mounting bracket is provided on the second movable platform for fixing the pressurizing mechanism and the pressure roller; A pressure sensor is disposed between the pressurizing mechanism and the pressure roller to obtain the pressure value applied to the main shaft.

6. The testing platform as described in claim 2, characterized in that, The torque load device module is connected to the other end of the main shaft via the coupling; The torque load device module includes: A load-bearing mechanism for applying a torque load to the spindle; A braking mechanism is used to control the spindle to stop operating.

7. A method for testing the dynamic performance of an elevator high-speed spindle under variable torque and variable load conditions using the test platform according to any one of claims 1-6, characterized in that, The testing method includes: The spindle is driven to its rated speed by the spindle drive module. A radial load is applied to the main shaft through the radial load device module, wherein the radial load is adjusted according to the rated load of the high-speed elevator and the total radial load calculated based on the actual application scenario of the high-speed elevator; The torque load device module applies a torque load to the main shaft according to the simulated operating conditions of the high-speed elevator. The spindle testing device module acquires dynamic detection data of the spindle and generates analysis charts.

8. The test method as described in claim 7, characterized in that, The radial load is calculated using the following formula: Where R is the radial load, R all R is the total radial load of the traction machine of the high-speed elevator. t The traction ratio of the high-speed elevator; The total radial load R of the traction machine of the high-speed elevator is calculated using the following formula. all : R all =P+Q+Q 载 +W r1 +W r2 +W r3 ; Q 载 =P+q×Q Where P is the self-weight of the high-speed elevator car, Q is the rated load of the high-speed elevator, and q is the balance coefficient of the high-speed elevator. 载 W represents the load weight inside the car of the high-speed elevator. r1 W is the weight of the traction steel wire rope of the high-speed elevator. r2 W is the weight of the compensation chain suspended by the high-speed elevator. r3 The weight of the traveling cable suspended by the high-speed elevator.

9. A method for testing the dynamic performance of an elevator high-speed spindle under variable torque and variable load conditions using the test platform according to any one of claims 1-6, characterized in that, The testing method includes: The radial load applied to the spindle by the radial load device module and the radial load applied to the spindle by the torque load device module are adjusted according to the test requirements of the simulated working conditions. The spindle drive module enables the spindle to operate under different speed conditions. The spindle testing device module tests the spindle's operation under different speed conditions, and the detection sensor acquires the spindle's dynamic detection data and generates analysis charts.

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