An elevator car floor shockproof rubber compression rupture detection method, system, device and medium

Abstract

The application provides an elevator car floor shockproof rubber compression rupture detection method, system, device and medium, wherein the method comprises: after the installation and debugging of the elevator are completed, in a full load state of the car, an uplink initial torque value required when the elevator starts to go up is obtained, and a downlink initial torque value required when the elevator starts to go down is obtained; when the elevator is normally running, it is judged whether a full load signal of the car is received, if yes, a transient torque value required when the elevator starts to go up in the full load state of the car is obtained; it is judged whether the running direction of the elevator is uplink or downlink; if the elevator goes up, it is judged whether the difference between the uplink initial torque value and the transient torque value is within a preset threshold range, if not, it is judged that the car floor shockproof rubber is abnormal; if the elevator goes down, it is judged whether the difference between the downlink initial torque value and the transient torque value is within a preset threshold range, if not, it is judged that the car floor shockproof rubber is abnormal. The application can monitor whether the elevator car floor shockproof rubber is abnormal in real time.

Description

Technical Field

[0001] This invention belongs to the field of elevator technology, and in particular relates to a method, system, equipment and medium for detecting compression cracking of the anti-vibration rubber at the bottom of an elevator car. Background Technology

[0002] Between the elevator car floor and the car floor frame, there is a shock-absorbing rubber layer for cushioning. The working condition of this rubber layer (such as loss of elasticity, excessive compression, or cracking) directly affects passenger comfort. Excessive compression can cause the car floor weighing sensor to trigger prematurely, resulting in an overload or full-load signal before the elevator reaches its full capacity, impacting the riding experience. Furthermore, if the compression exceeds the standard significantly, it can lead to unpredictable consequences such as car tilting or abnormal swaying, compromising passenger safety. Currently, during elevator maintenance, the inspection of car floor components is often hampered by the narrow space and insufficient lighting in the elevator shaft pit, making it difficult to see or inspect components, especially dark-colored components like the car floor shock-absorbing rubber, which are harder to inspect for abnormalities such as cracks or compression exceeding the component's lifespan. Furthermore, during the inspection of the car bottom anti-vibration rubber components in the pit, it is often necessary for one person to be in the elevator pit, and another person to be on top of the elevator car, descending to a height accessible to the pit workers. Due to insufficient lighting in the pit and inadequate illumination from the shaft lights, a flashlight is also needed to inspect the car bottom anti-vibration rubber in the gap between the car bottom frame and the upper car bottom. This inspection method is difficult to implement in practice; visual inspection alone is insufficient to fully assess the actual condition of the car bottom anti-vibration rubber, and it cannot detect internal cracks. Moreover, outside of maintenance inspection periods, it is impossible to promptly detect any cracks in the rubber. Summary of the Invention

[0003] The purpose of this invention is to provide a method, system, equipment, and medium for detecting compression cracks in the anti-vibration rubber at the bottom of an elevator car, which can monitor in real time whether there are any abnormalities in the anti-vibration rubber at the bottom of the elevator car.

[0004] This invention is achieved through the following technical solution: A method for detecting compression cracking of the vibration damping rubber at the bottom of an elevator car includes the following steps: After the elevator is installed and commissioned, with the car fully loaded, obtain the initial upward torque value required for the elevator to start moving upward, and obtain the initial downward torque value required for the elevator to start moving downward. When the elevator is running normally, it determines whether a full car signal is received. If so, it obtains the instantaneous torque value required for the elevator to start when the car is full. Determine whether the elevator is moving upwards or downwards; If the elevator is going up, determine whether the difference between the initial upward torque value and the instantaneous torque value is within a preset threshold range. If not, determine that there is an abnormality in the car bottom anti-vibration rubber. If the elevator descends, it is determined whether the difference between the initial downward torque value and the instantaneous torque value is within a preset threshold range. If not, it is determined that there is an abnormality in the anti-vibration rubber at the bottom of the elevator car.

[0005] Furthermore, after the step of determining whether the car bottom shock-absorbing rubber is abnormal, the method further includes: Issue a warning signal.

[0006] Furthermore, the steps of obtaining the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, when the car is fully loaded, include: Weights of a preset percentage of the elevator's rated load are placed inside the elevator car to make the car fully loaded. Control the elevator to move upwards and obtain the initial upward torque value required when the elevator starts moving upwards; Control the elevator to move downwards and obtain the initial downward torque value required when the elevator starts moving downwards.

[0007] This invention also discloses an elevator car bottom anti-vibration rubber compression crack detection system, comprising: The acquisition module is used to acquire the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, under the condition that the car is fully loaded after the elevator installation and commissioning is completed. The first judgment module is used to determine whether a full-load signal of the car is received when the elevator is running normally. If so, it obtains the instantaneous torque value required for the elevator to start when the car is full. The second judgment module is used to determine whether the elevator is moving upwards or downwards; The third judgment module is used to determine whether the difference between the initial upward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is going upward. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber. The fourth judgment module is used to determine whether the difference between the initial downward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is descending. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber.

[0008] The present invention also discloses an electronic device, the electronic device comprising: processor; Memory is used to store executable computer programs; Among them, the steps of implementing the elevator car bottom anti-vibration rubber compression crack detection method when the processor executes the computer program.

[0009] The present invention also discloses a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of a method for detecting compression cracking of the anti-vibration rubber at the bottom of an elevator car.

[0010] Compared with existing technologies, the beneficial effects of this invention are as follows: using the initial torque value when the elevator starts under full load as a benchmark, and then comparing the instantaneous torque value required for the current start under the subsequent full load state with the initial torque value, it can determine whether there is an abnormality in the car bottom anti-vibration rubber. It can monitor whether there is an abnormality in the elevator car bottom anti-vibration rubber in real time, which can make up for the limited on-site conditions during elevator maintenance operations. It may be impossible to observe the problem of excessive compression or even cracking of the car bottom anti-vibration rubber, which may cause the car bottom weighing sensor switch to be prematurely triggered, affecting the riding experience. It may also cause unpredictable events such as tilting or abnormal swaying of the car frame and car when the compression exceeds the standard, affecting the safety of riding the elevator. Attached Figure Description

[0011] Figure 1 This is a flowchart of the steps in the elevator car bottom anti-vibration rubber compression crack detection method of the present invention; Figure 2 This is a schematic diagram of the elevator traction system in the elevator car bottom anti-vibration rubber compression crack detection method of the present invention; Figure 3 This is a schematic diagram of the module of the elevator car bottom anti-vibration rubber compression crack detection method of the present invention; Figure 4 This is a hardware structure diagram of the electronic device of the present invention.

[0012] In the diagram, 1-inverter, 2-traction machine, 3-car bottom weighing detection switch, 4-car bottom anti-vibration rubber, 5-upper car bottom, 6-car, 7-car frame, 71-car bottom frame, 8-counterweight. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0015] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0016] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] Please see Figure 2The elevator traction system involved in the elevator car bottom anti-vibration rubber compression crack detection method of this invention includes a traction machine 2, a car frame 7, and a counterweight frame 8, which together constitute the basic traction system of the elevator. The frequency converter 1 is electrically connected to the traction machine 2 and is used to control the operation of the traction machine 2 and collect its output torque. The traction machine 2 is connected to the car frame 7 and the counterweight frame 8 respectively through traction steel wire ropes to achieve balanced traction between the car 6 and the counterweight. The car 6 is installed inside the car frame 7, the upper car bottom 5 is located at the bottom of the car 6, the car bottom frame 71 is the bottom component of the car frame 7, and the car bottom anti-vibration rubber 4 is installed between the upper car bottom 5 and the car bottom frame 71 to play a role in shock absorption and buffering. The car bottom weighing detection switch 3 is located between the upper car bottom 5 and the car bottom frame 71 to detect load changes inside the car 6 and transmit the load signal to the frequency converter 1. During normal elevator operation, the load inside the car 6 is transferred to the car bottom anti-vibration rubber 4 via the upper car bottom 5, and then to the car frame 7 via the car bottom frame 71. To keep the car stationary and prevent slippage, the traction machine needs to output an electromagnetic torque (i.e., compensation torque) of the same magnitude as the unbalanced torque. The physical method of elevator load detection is usually achieved by three detection switches installed on the car bottom to realize three load detection levels, corresponding to the three states of "light load" (20%), "full load" (80%), and "overload" (110%).

[0019] Please see Figure 1 , Figure 1 This is a flowchart illustrating the steps of the elevator car bottom anti-vibration rubber compression crack detection method of the present invention. The present invention provides a method for detecting the compression crack of elevator car bottom anti-vibration rubber, comprising the following steps: S1. After the elevator installation and commissioning are completed, with the car fully loaded, obtain the initial upward torque value required for the elevator to start going up, and obtain the initial downward torque value required for the elevator to start going down. S2. When the elevator is running normally, determine whether a full car signal is received. If so, obtain the instantaneous torque value required for the elevator to start when the car is full. S3. Determine whether the elevator is moving upwards or downwards; S4. If the elevator is going up, determine whether the difference between the initial torque value and the instantaneous torque value is within the preset threshold range. If not, determine that there is an abnormality in the car bottom anti-vibration rubber. S5. If the elevator descends, determine whether the difference between the initial torque value and the instantaneous torque value is within the preset threshold range. If not, determine that there is an abnormality in the car bottom anti-vibration rubber.

[0020] In step S1 above, after the elevator installation and commissioning work is completed, the weight of the car and counterweight has been determined, meaning all components are installed, the load is applied and no longer changing, the elevator balance coefficient is adjusted, and the elevator is in an initial state suitable for normal operation. This ensures that the subsequent testing benchmark is based on a stable and standard elevator system state. Then, a standard load is placed in the elevator car, triggering a full-load test. Under full-load conditions, the elevator is controlled to move upwards and downwards, acquiring the initial upward torque required for starting the upward movement and the initial downward torque required for starting the downward movement. These initial upward and downward torque values ​​are recorded as benchmark torques and stored in the elevator control system. Since the traction system must overcome opposite directions of gravity when the elevator moves upwards and downwards, bidirectional torque data acquisition provides a more comprehensive reflection of the operating state under full-load conditions, improving the accuracy of subsequent comparisons and judgments. Furthermore, the obtained initial upward and downward torque values ​​correspond to the full-load start-up operation condition when the anti-vibration rubber is in a normal state and the car is in a standard position. These are key reference data for subsequent judgment on whether the anti-vibration rubber has malfunctioned.

[0021] Further, in step S1, the steps of obtaining the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, when the car is fully loaded, include: S11. Place weights with a weight that is a preset percentage of the elevator's rated load into the elevator car to make the car fully loaded. S12. Control the elevator to move upwards and obtain the initial upward torque value required when the elevator starts moving upwards; S13. Control the elevator to move downwards and obtain the initial downward torque value required when the elevator starts moving downwards.

[0022] In step S11 above, 80% of the rated load is the "full load" criterion commonly used in the elevator industry. Using this load percentage ensures that the testing benchmark is consistent with the load judgment logic during actual elevator operation. That is, the preset percentage is set to 80%, although the specific value of the preset percentage can be determined based on the actual situation of the elevator under test. Therefore, a weight of 80% of the elevator's rated load is placed inside the elevator car, causing the weighing detection switch at the bottom of the car to trigger the "full load" (80%) state. The purpose of this step is to establish a standardized full load condition as the benchmark for subsequent testing.

[0023] In steps S12 to S13 above, when the car is fully loaded, the elevator is controlled to run upward and downward at the rated speed. When the elevator is running upward, the output torque required for the elevator frequency converter to start upward is obtained and recorded as the initial upward torque value. When the elevator is running downward, the output torque required for the elevator frequency converter to start downward is obtained and recorded as the initial downward torque value.

[0024] In step S2 above, during the subsequent normal operation of the elevator, the elevator's operating status is monitored. The elevator control system continuously monitors the status signal of the car bottom weighing detection switch. When the car bottom detection switch detects that the "full load" (80%) state is triggered, that is, the system receives the car full load signal and enters the comparison and judgment stage. At this time, the system reads the instantaneous torque value of the elevator inverter at the current start-up operation in real time for comparison with the reference torque value. If the "full load" state is not triggered, that is, the system does not receive the car full load signal, the monitoring state continues.

[0025] In step S3 above, since the traction system needs to overcome the opposite directions of gravity when the elevator is going up and down, it is necessary to determine whether the elevator is going up or down. The elevator running direction determination is existing technology and will not be described in detail here.

[0026] In step S4 above, if the elevator is moving upwards, the instantaneous torque value is compared with the initial upward torque value. If the difference between the initial upward torque value and the instantaneous torque value is not within the preset threshold range, it indicates that the instantaneous torque value exceeds the allowable error range. This means the actual load obtained from the instantaneous torque value is significantly lower than the load corresponding to the reference torque value, indicating that the weighing detection switch has been prematurely triggered before the car reaches its true full load. This phenomenon indicates an abnormal downward movement of the car bottom, caused by increased compression or rupture of the car bottom anti-vibration rubber. This results in a reduced distance between the upper car bottom and the car bottom frame, a decrease in the overall height of the car, and premature activation of the weighing detection switch. At this point, the system determines that the car bottom anti-vibration rubber is ruptured or abnormally compressed, thus indicating an abnormality. If the difference between the initial upward torque value and the instantaneous torque value is within the preset threshold range, it indicates that the instantaneous torque value is within the allowable error range, meaning the car bottom anti-vibration rubber is in normal condition. The system does not need to issue a warning, and the elevator continues to operate normally.

[0027] In step S5 above, if the elevator descends, the instantaneous torque value is compared with the initial downward torque value. If the difference between the initial downward torque value and the instantaneous torque value is not within the preset threshold range, it indicates that the instantaneous torque value exceeds the allowable error range. This means the actual load obtained from the instantaneous torque value is significantly lower than the load corresponding to the reference torque value, indicating that the weighing detection switch has been prematurely triggered before the car reaches its true full load. This phenomenon indicates abnormal downward movement of the car bottom, caused by increased compression or rupture of the car bottom anti-vibration rubber, resulting in a reduced distance between the upper car bottom and the car bottom frame, a decrease in the overall height of the car, and premature activation of the weighing detection switch. At this time, the system determines that the car bottom anti-vibration rubber is ruptured or abnormally compressed, thus indicating an abnormality. When the difference between the initial downward torque value and the instantaneous torque value is within the preset threshold range, it indicates that the instantaneous torque value is within the allowable error range, meaning the car bottom anti-vibration rubber is in normal condition. The system does not need to issue a warning, and the elevator continues to operate normally.

[0028] Furthermore, after determining that the car floor's shock-absorbing rubber has abnormalities, the method also includes: S6. Issue a warning signal.

[0029] In step S6 above, after determining that there is an abnormality in the car bottom anti-vibration rubber, the system can send an early warning signal to the elevator maintenance management platform through the elevator Internet of Things (IoT) platform. This alerts maintenance personnel that the elevator car bottom anti-vibration rubber may be in an abnormally compressed or cracked state, requiring timely on-site inspection and replacement of the car bottom anti-vibration rubber. This prevents safety issues such as car tilting, abnormal swaying, or false triggering of the weighing system due to rubber failure. It should be noted that after the elevator completes a new maintenance operation and the car bottom anti-vibration rubber is replaced, steps S1 to S5 must be repeated, i.e., the standard load is repositioned and the new reference torque value is recorded to update the detection benchmark and ensure the accuracy of subsequent inspections.

[0030] The following is an example illustrating the method for detecting compression cracks in the anti-vibration rubber at the bottom of the elevator car according to the present invention: Taking a residential passenger elevator with a rated load of 1000kg as an example, the specific implementation process of the present invention will be explained.

[0031] I. Establishment of Testing Standards After the elevator was installed and commissioned, all components of the car and counterweight were in place, and the balance coefficient was adjusted to meet the standard requirements. Initial parameters such as the car's own weight and the counterweight weight were recorded in the elevator control system.

[0032] During the commissioning phase, a standard weight of 800 kg (80% of the rated load of 1000 kg) is evenly placed inside the elevator car. At this point, the weighing detection switch at the bottom of the car is triggered to the "full load" state. The elevator is then run once from the bottom to the top under full load. The elevator inverter records the torque value of this upward start-up as 45.6 N·m (this is an example value; the actual value will vary depending on the elevator model and configuration). This initial upward torque value is stored in the control system as the reference torque. Then, the elevator is run once from the top to the bottom under full load, and the initial downward torque value is recorded and stored. At this point, the detection reference is established.

[0033] II. Normal Monitoring Phase During the elevator's subsequent normal operation, the system continuously monitors the status of the car bottom weighing detection switch.

[0034] One day, the car bottom weighing detection switch triggered a "full load" signal, and the system immediately entered the comparison and judgment phase. The instantaneous torque value at the start of the inverter was collected in real time, measuring 40.2 N·m, and the elevator was in an upward motion. This measured torque value was compared with the initial upward torque value of 45.6 N·m. It was found that the measured instantaneous torque value was significantly lower than the initial upward torque value, with a difference of 5.4 N·m, which was outside the preset threshold range. Calculation showed that the actual load inside the car at this time was approximately 703 kg, far below the 800 kg standard load required to trigger the full load signal. Based on this, the system judged that there might be an abnormality such as increased compression or rupture of the car bottom anti-vibration rubber, immediately generated a warning signal, and pushed this abnormal information to the maintenance management platform through the elevator IoT system, notifying maintenance personnel to promptly go to the site for inspection.

[0035] III. On-site Inspection and Resumption Phase After receiving the warning, maintenance personnel arrived at the scene and entered the elevator pit to inspect the anti-vibration rubber on the car floor. They found that one piece of the anti-vibration rubber had obvious cracks and severe compression deformation, exceeding the component's lifespan standard. The anti-vibration rubber was then replaced. After the replacement, the standard load calibration procedure of the commissioning phase was repeated—that is, an 800kg weight was placed back in the car, the new reference torque value was recorded, and the system returned to normal monitoring status.

[0036] This method eliminates the need for dedicated personnel to conduct visual inspections in the confined space of the pit. It enables remote and real-time monitoring of the condition of the anti-vibration rubber at the bottom of the elevator car through the elevator's own control system and IoT platform. This effectively solves the problems of missed inspections and misjudgments caused by the narrow pit space, insufficient lighting, and the difficulty in observing the dark-colored anti-vibration rubber in traditional inspection methods. It can promptly detect abnormal changes in the anti-vibration rubber and issue early warnings during maintenance breaks, thus improving the efficiency and safety of elevator maintenance.

[0037] Please see Figure 3 , Figure 3 This is a schematic diagram of the elevator car bottom anti-vibration rubber compression rupture detection system of the present invention. Corresponding to the aforementioned embodiments of the elevator car bottom anti-vibration rubber compression rupture detection method of the present invention, the present invention also provides an elevator car bottom anti-vibration rubber compression rupture detection system, comprising: The acquisition module is used to acquire the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, under the condition that the car is fully loaded after the elevator installation and commissioning is completed. The first judgment module is used to determine whether a full-load signal of the car is received when the elevator is running normally. If so, it obtains the instantaneous torque value required for the elevator to start when the car is full. The second judgment module is used to determine whether the elevator is moving upwards or downwards; The third judgment module is used to determine whether the difference between the initial upward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is going upward. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber. The fourth judgment module is used to determine whether the difference between the initial downward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is going down. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber.

[0038] Furthermore, the elevator car bottom anti-vibration rubber compression rupture detection system also includes: The early warning module is used to issue early warning signals.

[0039] Furthermore, the acquisition module includes: The placement submodule is used to place weights, which are a preset percentage of the elevator's rated load, into the elevator car so that the car is fully loaded. The first control submodule is used to control the elevator's upward movement and obtain the initial upward torque value required when the elevator starts moving upward. The second control submodule is used to control the elevator's downward movement and obtain the initial downward torque value required when the elevator starts its downward movement.

[0040] The implementation process of the functions and roles of each module and submodule in the above system is detailed in the implementation process of the corresponding steps in the above method, and will not be repeated here.

[0041] For the system embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The system embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units.

[0042] Corresponding to the aforementioned embodiments of the elevator car bottom anti-vibration rubber compression crack detection method, the present invention also provides an electronic device, which may include: a processor; a memory for storing an executable computer program; wherein, when the processor executes the computer program, it implements the elevator car bottom anti-vibration rubber compression crack detection method in any of the aforementioned method embodiments.

[0043] The embodiments of the elevator car bottom anti-vibration rubber compression crack detection method and system provided in this invention can all be applied to electronic devices. Taking software implementation as an example, as a logical device, it is formed by the processor of the electronic device reading the corresponding computer program instructions from the non-volatile memory into memory and running them. From a hardware perspective, such as Figure 4 As shown, except Figure 4 In addition to the processor, memory, network interface, and non-volatile memory shown, the electronic device may also include other hardware, such as a camera module; or, depending on the actual function of the electronic device, it may also include other hardware, which will not be elaborated further.

[0044] Corresponding to the aforementioned embodiments of the elevator car bottom anti-vibration rubber compression crack detection method, this embodiment of the invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the elevator car bottom anti-vibration rubber compression crack detection method in any of the aforementioned method embodiments.

[0045] Embodiments of the present invention may take the form of a computer program product implemented on one or more storage media containing program code (including but not limited to disk storage, CD-ROM, optical storage, etc.). The computer-readable storage medium may include: permanent or non-permanent removable or non-removable media. The information storage function of the computer-readable storage medium can be implemented by any feasible method or technology. The information may be computer-readable instructions, data structures, program models, or other data.

[0046] In addition, computer-readable storage media include, but are not limited to: phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or other non-transfer media that can be used to store information accessible by a computing device.

[0047] Compared with existing technologies, the beneficial effects of this invention are as follows: using the initial torque value when the elevator starts under full load as a benchmark, and then comparing the instantaneous torque value required for the current start under the subsequent full load state with the initial torque value, it can determine whether there is an abnormality in the car bottom anti-vibration rubber. It can monitor whether there is an abnormality in the elevator car bottom anti-vibration rubber in real time, which can make up for the limited on-site conditions during elevator maintenance operations. It may be impossible to observe the problem of excessive compression or even cracking of the car bottom anti-vibration rubber, which may cause the car bottom weighing sensor switch to be prematurely triggered, affecting the riding experience. It may also cause unpredictable events such as tilting or abnormal swaying of the car frame and car when the compression exceeds the standard, affecting the safety of riding the elevator.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for detecting compression cracking of the shock-absorbing rubber at the bottom of an elevator car, characterized in that, Includes the following steps: After the elevator is installed and commissioned, with the car fully loaded, obtain the initial upward torque value required for the elevator to start moving upward, and obtain the initial downward torque value required for the elevator to start moving downward. When the elevator is running normally, it determines whether a full car signal is received. If so, it obtains the instantaneous torque value required for the elevator to start when the car is full. Determine whether the elevator is moving upwards or downwards; If the elevator is going up, determine whether the difference between the initial upward torque value and the instantaneous torque value is within a preset threshold range. If not, determine that there is an abnormality in the car bottom anti-vibration rubber. If the elevator descends, it is determined whether the difference between the initial downward torque value and the instantaneous torque value is within a preset threshold range. If not, it is determined that there is an abnormality in the anti-vibration rubber at the bottom of the elevator car.

2. The method for detecting compression cracking of the elevator car bottom anti-vibration rubber according to claim 1, characterized in that, After the step of determining whether the car bottom shock-absorbing rubber is abnormal, the method further includes: Issue a warning signal.

3. The method for detecting compression cracking of the elevator car bottom anti-vibration rubber according to claim 1, characterized in that, The steps of obtaining the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, when the car is fully loaded, include: Weights of a preset percentage of the elevator's rated load are placed inside the elevator car to make the car fully loaded. Control the elevator to move upwards and obtain the initial upward torque value required when the elevator starts moving upwards; Control the elevator to move downwards and obtain the initial downward torque value required when the elevator starts moving downwards.

4. A system for detecting compression cracking of shock-absorbing rubber at the bottom of an elevator car, characterized in that, include: The acquisition module is used to acquire the initial upward torque value required for the elevator to start moving upward and the initial downward torque value required for the elevator to start moving downward, under the condition that the car is fully loaded after the elevator installation and commissioning is completed. The first judgment module is used to determine whether a full-load signal of the car is received when the elevator is running normally. If so, it obtains the instantaneous torque value required for the elevator to start when the car is full. The second judgment module is used to determine whether the elevator is moving upwards or downwards; The third judgment module is used to determine whether the difference between the initial upward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is going upward. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber. The fourth judgment module is used to determine whether the difference between the initial downward torque value and the instantaneous torque value is within a preset threshold range if the second judgment module determines that the elevator is descending. If not, it is determined that there is an abnormality in the car bottom anti-vibration rubber.

5. An electronic device, characterized in that, include: processor; Memory is used to store executable computer programs; Wherein, when the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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