Method and equipment for monitoring residual grease in grease storage device of lubricating pump and storage medium

Abstract

The invention belongs to the technical field of residual grease monitoring, and particularly relates to a method and equipment for monitoring residual grease in a grease storage device of a lubricating pump and a storage medium, and the method comprises the following steps: obtaining a first consumption volume of the lubricating pump according to the current accumulated working time, the initial working time and the lubricating quantity per unit time; according to the actual measurement height, the initial height and the unit distance lubrication amount, the second consumption volume of the lubrication pump is obtained; obtaining a first residual volume and a second residual volume according to the rated volume, the first consumption volume and the second consumption volume of the lubricating pump; subtracting the first residual volume and / or the second residual volume from a low liquid level threshold value of the lubricating pump to obtain a volume difference value; judging whether the volume difference is less than or equal to 0; and if the volume difference value is smaller than or equal to 0, generating an alarm signal to prompt operation and maintenance personnel to shut down. The method has the effect of accurately monitoring the residual lubricating grease amount and the working state of the lubricating pump.

Description

Technical Field

[0001] The invention belongs to the technical field of residual grease monitoring, and in particular relates to a method, equipment and storage medium for monitoring residual grease in a grease storage device of a lubrication pump. Background Art

[0002] The lubrication system is generally composed of a lubrication pump (usually including a control system, which can also be externally controlled), a distributor, pipelines and their accessories, which can be lubricated according to different lubrication technical requirements of the lubrication parts of the equipment, reduce equipment wear and extend service life. As the running time of the lubrication system increases, the grease in the grease storage device of the pressurized plate lubrication pump will gradually decrease, and it is necessary to use special grease replenishment equipment to replenish it regularly. Otherwise, untimely grease replenishment will cause poor lubrication of the equipment, aggravate wear and cause accidents. Therefore, it is necessary to monitor the remaining grease in the lubrication pump grease storage device to avoid accidents.

[0003] In the related art, the lubrication system is usually equipped with a low liquid level monitoring device to monitor the minimum volume of grease in the grease storage device of the pressurized disk lubrication pump. When the minimum volume is reached, an alarm is triggered to notify the operation and maintenance personnel to replenish the grease. In addition, there is a new type of fully automatic quantitative lubrication pump, the grease storage device of which is equipped with a liquid level controller, a liquid level gauge and an exhaust valve for monitoring and displaying the liquid level. The liquid level gauge is used to measure the liquid level in the grease storage device and transmit it to the liquid level controller. When the liquid level in the grease storage device is lower than the lower limit, an alarm is triggered to realize the alarm and prompt for replenishing the grease in the grease storage device.

[0004] With regard to the above-mentioned related technologies, the liquid level sensor in the grease box and its accessories have a complex structure, and the probability of false alarm is particularly high for high-viscosity grease, which not only increases the cost, but is also easily affected by the quality of the sensor itself and the use environment, resulting in untimely alarms or false alarms, thereby affecting the use of the lubrication system. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for monitoring the residual grease in a grease storage device of a lubricating pump, which can accurately monitor the residual grease in the grease storage device and give an alarm when the grease in the grease storage device is insufficient.

[0006] Obtaining the initial height and initial working time of the grease liquid level in the grease storage device of the lubrication pump;

[0007] Obtain the current cumulative working time of the lubrication pump and the actual measured height of the grease level in the grease storage device;

[0008] Obtaining a first consumption volume of the grease in the grease storage device according to the current accumulated working time, the initial working time and the volume of grease consumed by the lubrication pump per unit time;

[0009] Based on the actual measured height, the initial height, and the volume of grease consumed per unit height, the second consumed volume of grease in the grease storage device is obtained;

[0010] Based on the rated volume of the grease storage device of the lubricating pump, the first consumed volume, and the second consumed volume, the first remaining volume and the second remaining volume of the grease in the grease storage device are obtained;

[0011] Subtract the first remaining volume and the second remaining volume from the low liquid level threshold of the lubricating pump or subtract the first remaining volume from the low liquid level threshold of the lubricating pump to obtain a volume difference;

[0012] Determine whether the volume difference is less than or equal to 0;

[0013] If the volume difference is less than or equal to 0, an alarm signal is generated, and based on the alarm signal, the remaining grease in the grease storage device of the lubricating pump is monitored.

[0014] Optionally, the obtaining of the first consumed volume of grease in the grease storage device according to the current cumulative working time, the initial working time, and the volume of grease consumed by the lubricating pump per unit time includes:

[0015] Based on the current cumulative time and the initial working time, a working time difference is obtained;

[0016] Based on the working time difference and the volume of grease consumed by the lubricating pump per unit time, the first consumed volume of grease in the grease storage device is obtained.

[0017] Optionally, the obtaining of the second consumed volume of grease in the grease storage device according to the actual measured height, the initial height, and the volume of grease consumed per unit height includes:

[0018] Based on the actual measured height and the initial height, the descending height of the grease storage liquid level of the lubricating pump is obtained;

[0019] Based on the descending height and the volume of grease consumed per unit height, the second consumed volume of grease in the grease storage device is obtained.

[0020] Optionally, the determining whether the volume difference is less than or equal to 0 further includes:

[0021] The determining whether the volume difference is less than or equal to 0 further includes:

[0022] If the volume difference is greater than or equal to 0, the calculated difference between the second consumed volume and the first consumed volume is calculated;

[0023] Determine whether the calculated difference is greater than the maximum value of the volume error range;

[0024] If the calculated difference is greater than the maximum value of the volume error range, obtain the third consumption volume and the fourth consumption volume obtained at adjacent times to the second consumption volume. The acquisition time of the third consumption volume is before the time of the second consumption volume, and the acquisition time of the fourth consumption volume is after the time of the second consumption volume;

[0025] Determine whether the difference between the fourth consumption volume and the second consumption volume and the difference between the third consumption volume and the second consumption volume are both greater than the maximum value of the volume error range;

[0026] If the difference between the fourth consumption volume and the second consumption volume and the difference between the third consumption volume and the second consumption volume are both greater than the maximum value of the volume error range, generate a grease storage device leakage signal.

[0027] Optionally, the determination of whether the volume difference is less than or equal to 0 further includes:

[0028] The determination of whether the difference between the fourth consumption volume and the second consumption volume and the difference between the third consumption volume and the second consumption volume are both greater than the maximum value of the volume error range further includes:

[0029] If the difference between the fourth consumption volume and the second consumption and the difference between the third consumption volume and the second consumption volume are both not greater than the maximum value of the volume error range, determine whether the difference between the fourth consumption volume and the second consumption and the difference between the third consumption volume and the second consumption volume are both less than the minimum value of the volume error range;

[0030] If the difference between the fourth consumption volume and the second consumption volume and the difference between the third consumption volume and the second consumption volume are both less than the minimum value of the volume error range, generate an over-standard error signal for the single pumping volume of the lubricating pump.

[0031] Optionally, the determination of whether the volume difference is less than or equal to 0 further includes:

[0032] Determine whether the difference between the second remaining volume and the first remaining volume is greater than the maximum value of the absolute value of the volume error range;

[0033] If the difference between the second remaining volume and the first remaining volume is greater than the maximum value of the absolute value of the volume error range, generate a pressure plate jamming signal.

[0034] Optionally, the generation of an alarm signal to prompt the maintenance personnel to stop the machine for grease replenishment includes:

[0035] Obtain the working state of the lubricating pump;

[0036] Determine whether the working state is a non-grease-supplement working state;

[0037] If the working state is a grease-supplement working state, generate a shutdown signal within a preset time and switch the lubricating pump to a non-grease-supplement working state after shutdown;

[0038] If the working state is a non-grease-supplement working state, supplement the lubricating grease volume to the highest liquid level by a timing method.

[0039] Optionally, after the lubricating grease is supplemented by a timing method, the current cumulative working time of the lubricating pump is cleared and the initial height of the distance measuring device is obtained.

[0040] A terminal device includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor loads and executes the computer program, the above-mentioned method for monitoring the remaining grease in a lubricating pump grease storage device is adopted.

[0041] A computer-readable storage medium stores a computer program. When the computer program is loaded and executed by a processor, the above-mentioned method for monitoring the remaining grease in a lubricating pump grease storage device is adopted.

[0042] The beneficial effects of the present invention are:

[0043] 1. By using the current cumulative working time and the actual measured height of the lubricating grease liquid level drop, the lubricating grease consumption volume of the grease storage device is calculated respectively, so as to obtain the amount of the remaining lubricating grease in the grease storage device, that is, the first remaining volume and the second remaining volume. Compare the second remaining volume obtained by theoretical calculation with the first remaining volume obtained by historical data, and select the minimum value as the alarm signal, so as to obtain the information of whether lubricating grease needs to be supplemented. By calculating the remaining lubricating grease in the grease storage device in two ways, the monitoring is more accurate.

[0044] 2. It can monitor some other abnormal working conditions during the operation of the lubricating pump, such as leakage of the grease storage device, excessive error of the single pumping volume of the lubricating pump, and jam of the pressure plate, and generate different signals, so that the staff can judge the current operating condition of the lubricating pump according to the signals. Description of the Drawings

[0045] Figure 1 It is a schematic flow chart of the method for monitoring the remaining grease in a lubricating pump grease storage device of the present invention. Detailed Embodiments

[0046] A method for monitoring the remaining grease in a lubricating pump grease storage device, as Figure 1 shown, includes:

[0047] S100. Obtain the initial height of the lubricating grease liquid level in the grease storage device of the lubricating pump and the initial working time.

[0048] Specifically, the working time of the lubricating pump starts when the grease replenishment of the lubricating pump is completed. Since it is impossible to achieve an ideal full replenishment during grease replenishment and there may be a little error, it is necessary to record the initial height from the measuring device. The lubricating grease liquid level can be measured by a distance measuring device, such as a distance sensor or a liquid level sensor. The initial working time is the time when the lubricating pump starts to work, and the initial working time can be set to 0.

[0049] S110. Obtain the current cumulative working time of the lubricating pump and the actual measured height of the drop of the lubricating grease liquid level in the grease storage device.

[0050] Specifically, the current cumulative working time is the time from the initial working time of the lubricating pump to the present. The actual measured height is the height of the drop of the lubricating grease liquid level measured by the distance measuring device after working for a period of time, which is also the amount of lubricating grease used.

[0051] S120. Obtain the first consumed volume of the lubricating grease in the grease storage device according to the current cumulative working time, the initial working time and the volume of the lubricating grease consumed by the lubricating pump per unit time.

[0052] Specifically, the working time can be obtained according to the current cumulative working time and the initial working time, and then the first consumed volume can be obtained by multiplying the working time by the volume of the lubricating grease consumed by the lubricating pump per unit time. The lubricating amount per unit time is the amount of lubricating grease consumed by the lubricating pump per unit time.

[0053] The volume of the lubricating grease consumed by the lubricating pump per unit time can be measured through past data. By measuring the consumed volume of the lubricating grease within a period of time, the volume of the lubricating grease consumed by the lubricating pump per unit time can be obtained.

[0054] S130. Obtain the second consumed volume of the lubricating grease in the grease storage device according to the actual measured height, the initial height and the volume of the lubricating grease consumed per unit height.

[0055] Specifically, subtract the initial height from the actual measured height to obtain the height of the consumed lubricating grease, and then multiply it by the volume of the lubricating grease consumed per unit height to obtain the amount of the consumed lubricating grease, that is, the second consumed volume.

[0056] The volume of the lubricating grease consumed per unit height is a theoretical value, which is calculated by dividing the maximum volume of the lubricating grease that the grease storage device can store by the height.

[0057] S140. Obtain the first remaining volume and the second remaining volume according to the rated volume of the lubricating pump, the first consumed volume and the second consumed volume.

[0058] Specifically, the first remaining volume is the rated volume of the lubricating pump minus the first consumption volume, and the second remaining volume is the rated volume of the lubricating pump minus the second consumption volume.

[0059] S150. Subtract the first remaining volume and / or the second remaining volume from the low liquid level threshold of the lubricating pump to obtain a volume difference.

[0060] S160. Determine whether the volume difference is less than or equal to 0.

[0061] S170. If the volume difference is less than or equal to 0, generate an alarm signal, and based on the alarm signal, monitor the remaining grease in the grease storage device of the lubricating pump.

[0062] Specifically, the low liquid level threshold is the alarm liquid level of the grease stored in the allowed grease storage device of the lubricating pump. When the remaining grease reaches this level, an alarm signal is sent to prompt the operation and maintenance personnel to stop the machine for grease replenishment.

[0063] In one implementation manner of this embodiment, step S120, that is, obtaining the first consumption volume of the lubricating pump according to the current cumulative working time, the initial working time, and the lubrication amount per unit time, includes:

[0064] S200. Obtain the working time difference according to the current cumulative time and the initial working time.

[0065] S210. Obtain the first consumption volume of the lubricating pump according to the working time difference and the lubrication amount per unit time.

[0066] Specifically, set the initial working time as T 0 , and set the current cumulative time as T, then the working time difference = T - T 0 .

[0067] The lubrication amount per unit time is the amount of grease pumped out per unit time, set as X, then the first consumption volume = (T - T 0 ) * X.

[0068] In one implementation manner of this embodiment, step S130, that is, obtaining the second consumption volume of the lubricating pump according to the actual measured height, the initial height, and the lubrication amount per unit distance, includes:

[0069] S300. Obtain the descending height of the grease storage of the lubricating pump according to the actual measured height and the initial height.

[0070] S310. Obtain the second consumption volume of the lubricating pump according to the descending height and the lubrication amount per unit distance.

[0071] Specifically, set the initial height as L 1, if the actual measured height is set as L, then the descending height = L - L 1 .

[0072] The lubrication amount per unit distance is the amount of grease pumped out for each unit distance of descent. If the lubrication amount per unit distance is set as Y, then the second consumption volume = (L - L 1 ) * Y.

[0073] In one implementation manner of this embodiment, step S160, that is, determining whether the volume difference is less than or equal to 0, further includes:

[0074] S400. If the volume difference is greater than or equal to 0, then calculate the calculation difference between the second consumption volume and the first consumption volume.

[0075] Specifically, the calculation difference = the second consumption volume - the first consumption volume.

[0076] S410. Determine whether the calculation difference is greater than the maximum value of the volume error range.

[0077] Specifically, the second consumption volume is calculated based on the actual measured height measured by the distance measuring device and is the actual grease consumption volume, while the first consumption volume is a theoretical value calculated based on the cumulative working time. In an ideal situation, the calculation difference is 0. However, due to the existence of actual measurement errors, the first consumption volume and the second consumption volume cannot be equal. Therefore, a volume error range is set, and within the volume error range, it is considered normal.

[0078] S420. If the calculation difference is greater than the maximum value of the volume error range, then obtain the third consumption volume and the fourth consumption volume adjacent to the second consumption volume.

[0079] Specifically, the third consumption volume and the fourth consumption volume adjacent to the second consumption volume are the grease consumption volumes measured at different times from the second consumption volume. Among them, the third consumption volume is defined in this embodiment as before the time of the second consumption volume, and the fourth consumption volume is after the time of the second consumption volume. The time difference between measuring the third consumption volume and the second consumption volume is equal to the time difference between measuring the fourth consumption volume and the second consumption volume. That is, the grease consumption volumes measured within adjacent time differences.

[0080] S430. Determine whether the difference between the fourth consumption volume and the second consumption, and the difference between the third consumption volume and the second consumption volume are both greater than the maximum value of the volume error range.

[0081] S440. If the difference between the fourth consumption volume and the second consumption volume, and the difference between the third consumption volume and the second consumption volume are both greater than the maximum value of the volume error range, then generate a grease storage device leakage signal.

[0082] Specifically, if the consumed volume of the grease in adjacent time periods, that is, the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume, are both greater than the maximum value of the volume error range, and under normal circumstances, the consumed volume of the grease in adjacent time periods should be equal within a certain error range, but the actual situation is that it is greater than the maximum value of the volume error range. Therefore, it is considered that the grease storage device has leaked, and a grease storage device leakage signal is generated.

[0083] In one implementation manner of this embodiment, step S160, that is, determining whether the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both greater than the maximum value of the volume error range, further includes:

[0084] S500. If the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both not greater than the maximum value of the volume error range, then determine whether the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both less than the minimum value of the volume error range.

[0085] S510. If the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both less than the minimum value of the volume error range, then generate a signal indicating that the single pumping volume error of the lubricating pump exceeds the standard.

[0086] In one implementation manner of this embodiment, step S160, that is, determining whether the volume difference is less than or equal to 0, further includes:

[0087] S600. Determine whether the difference between the second remaining volume and the first remaining volume is greater than the maximum value of the absolute value of the volume error range.

[0088] S610. If the difference between the second remaining volume and the first remaining volume is greater than the maximum value of the absolute value of the volume error range, then generate a signal indicating that the pressure plate is stuck.

[0089] Specifically, the difference between the second remaining volume and the first remaining volume should be 0 in theory. However, during actual operation, since the lubricating pump may malfunction, and the first remaining volume is a theoretical value calculated based on time, the distance measured by the distance measuring device may be inaccurate. When the difference between the second remaining volume and the first remaining volume is greater than the maximum value of the absolute value of the volume error range, it indicates that there is more grease remaining in the second remaining volume. The lubricating pump pumps the grease out through the pressure plate, and more remaining grease indicates that the pressure plate of the lubricating pump is stuck, and a signal indicating that the pressure plate is stuck is generated.

[0090] In one implementation of this embodiment, step S170, which generates an alarm signal to prompt the operation and maintenance personnel to stop the machine for grease replenishment, includes:

[0091] S700. Obtain the working state of the lubricating pump.

[0092] Specifically, the working state of the lubricating pump includes a non-grease-supplying working state and a grease-supplying working state. The grease-supplying working state means that the lubricating pump is pumping grease for the equipment, and the non-grease-supplying working state means that the lubricating pump is not pumping grease for the equipment.

[0093] S710. Determine whether the working state is the non-grease-supplying working state.

[0094] Specifically, when replenishing grease to the grease storage device of the lubricating pump, the lubricating pump must be in the non-grease-supplying working state.

[0095] S720. If the working state is the grease-supplying working state, generate a stop signal within a preset time and switch the lubricating pump to the non-grease-supplying working state after stopping.

[0096] Specifically, after it is detected that the remaining grease in the grease storage device of the lubricating pump is lower than the low liquid level threshold, since the equipment cannot stop immediately, grease replenishment cannot be carried out immediately. After it is lower than the low liquid level threshold, there will be a period of time to buffer for the equipment to stop, that is, within the preset time. The length of the preset time can be set by itself and depends on the volume of grease consumed per unit time. After the preset time has passed, the equipment stops and starts to replenish grease to the lubricating pump.

[0097] S730. If the working state is the non-grease-supplying working state, replenish the grease volume to the highest liquid level in a timed manner.

[0098] When the grease replenishment is completed in a timed manner, the current cumulative working time of the lubricating pump is cleared and the initial height of the distance measuring device is obtained, so as to accurately measure whether the working state of the lubricating pump is normal subsequently.

[0099] This application embodiment also discloses a terminal device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor loads and executes the computer program, a method for monitoring the remaining grease in the grease storage device of a lubricating pump is adopted.

[0100] Among them, the terminal device can be a computer device such as a desktop computer, a laptop computer or a cloud server. And the terminal device includes but is not limited to a processor and a memory. For example, the terminal device may also include input and output devices, network access devices and a bus, etc.

[0101] Among them, the processor may adopt a central processing unit (CPU). Of course, according to the actual usage, other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. may also be adopted. The general-purpose processor may adopt a microprocessor or any conventional processor, etc. This application does not make any restrictions in this regard.

[0102] Among them, the memory may be an internal storage unit of the terminal device. For example, the hard disk or memory of the terminal device, or it may also be an external storage device of the terminal device. For example, the plug-in hard disk, smart media card (SMC), secure digital card (SD), or flash card (FC) equipped on the terminal device, etc. And the memory may also be a combination of the internal storage unit and the external storage device of the terminal device. The memory is used to store computer programs and other programs and data required by the terminal device. The memory may also be used to temporarily store the data that has been output or will be output. This application does not make any restrictions in this regard.

[0103] Among them, through this terminal device, the method for monitoring the remaining grease in a grease storage device of a lubricating pump in the above embodiment is stored in the memory of the terminal device, and is loaded and executed on the processor of the terminal device for convenient use.

[0104] The embodiment of this application also discloses a computer-readable storage medium. And the computer-readable storage medium stores a computer program. Among them, when the computer program is executed by the processor, the method for monitoring the remaining grease in a grease storage device of a lubricating pump in the above embodiment is adopted.

[0105] Among them, the computer program may be stored in a computer-readable medium. The computer program includes computer program code. The computer program code may be in the form of source code, object code, executable file, or some middleware form, etc. The computer-readable medium includes any entity or device, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the computer-readable medium includes, but is not limited to, the above components.

[0106] Among them, through this computer-readable storage medium, the method for monitoring the remaining grease in a grease storage device of a lubricating pump in the above embodiment is stored in the computer-readable storage medium, and is loaded and executed on the processor to facilitate the storage and application of the above method.

[0107] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments in the present application as above, which are not provided in detail for the sake of brevity.

[0108] One or more embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this application shall be included within the scope of protection of this application.

Claims

1. A method for monitoring residual grease in a lubricating pump grease storage device, characterized in that: include: Obtaining the initial height and initial working time of the grease liquid level in the grease storage device of the lubrication pump; Obtain the current cumulative working time of the lubrication pump and the actual measured height of the grease level in the grease storage device; Obtaining a first consumption volume of the grease in the grease storage device according to the current accumulated working time, the initial working time and the volume of grease consumed by the lubrication pump per unit time; Obtaining a second consumption volume of the grease in the grease storage device according to the actual measured height, the initial height and the grease consumption volume per unit height; Obtaining a first residual volume and a second residual volume of the lubricating grease in the lubricating pump according to the rated volume, the first consumption volume and the second consumption volume of the lubricating pump's lubricating grease storage device; Subtracting the first remaining volume and the second remaining volume from a low liquid level threshold of the lubrication pump or subtracting the first remaining volume from the low liquid level threshold of the lubrication pump to obtain a volume difference; Determine whether the volume difference is less than or equal to 0; If the volume difference is less than or equal to 0, an alarm signal is generated, and the remaining grease in the grease storage device of the lubrication pump is monitored based on the alarm signal.

2. The method for monitoring the residual grease in the grease storage device of a lubricating pump according to claim 1, characterized in that: The obtaining of the first consumption volume of the grease in the grease storage device according to the current accumulated working time, the initial working time and the volume of the grease consumed by the lubrication pump per unit time comprises: Obtaining a working time difference according to the current accumulated time and the initial working time; According to the working time difference and the volume of grease consumed by the lubrication pump per unit time, a first consumed volume of the grease in the grease storage device is obtained.

3. The method for monitoring the residual grease in the grease storage device of a lubricating pump according to claim 1, characterized in that: The obtaining of a second consumption volume of the grease in the grease storage device according to the actual measured height, the initial height and the grease consumption volume per unit height comprises: According to the actual measured height and the initial height, the descending height of the grease storage level of the lubrication pump is obtained; According to the descending height and the grease consumption volume per unit height, a second consumption volume of the grease in the grease storage device is obtained.

4. The method for monitoring residual grease in a lubrication pump grease storage device according to claim 1, characterized in that: The determining whether the volume difference is less than or equal to 0 further includes: If the volume difference is greater than or equal to 0, calculating the calculated difference between the second consumed volume and the first consumed volume; Determining whether the calculated difference is greater than the maximum value of the volume error; If the calculated difference is greater than the maximum value of the volume error, obtaining a third consumption volume and a fourth consumption volume obtained at adjacent times to the second consumption volume, wherein the third consumption volume is obtained before the second consumption volume, and the fourth consumption volume is obtained after the second consumption volume; Determining whether a difference between the fourth consumed volume and the second consumed volume and a difference between the third consumed volume and the second consumed volume are both greater than a maximum value of a volume error interval; If the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both greater than the maximum value of the volume error interval, a fat storage device leakage signal is generated.

5. The method for monitoring the residual grease in the grease storage device of a lubricating pump as claimed in claim 4, characterized in that: The determining whether the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both greater than the maximum value of the volume error interval further includes: If the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are not greater than the maximum value of the volume error interval, determining whether the difference between the fourth consumed volume and the second consumed volume and the difference between the third consumed volume and the second consumed volume are both less than the minimum value of the volume error interval; If the difference between the fourth consumption volume and the second consumption volume and the difference between the third consumption volume and the second consumption volume are both smaller than the minimum value of the volume error interval, a lubrication pump single pumping volume error exceeding standard signal is generated.

6. The method for monitoring the residual grease in the grease storage device of a lubricating pump according to claim 4, characterized in that: The determining whether the volume difference is less than or equal to 0 further includes: Determining whether a difference between the second remaining volume and the first remaining volume is greater than a maximum value of an absolute value of the volume error interval; If the difference between the second remaining volume and the first remaining volume is greater than the maximum absolute value of the volume error interval, a pressure plate stuck signal is generated.

7. The method for monitoring residual grease in a lubrication pump grease storage device according to claim 1, characterized in that: The generating of an alarm signal to prompt the operation and maintenance personnel to stop the machine for grease replenishment includes: Get the working status of the lubrication pump; Determining whether the working state is a non-fat replenishing working state; If the working state is a grease replenishing working state, a shutdown signal is generated within a preset time and the lubrication pump is switched to a non-grease replenishing working state after shutdown; If the working state is a non-grease replenishing working state, the grease volume is replenished to the maximum liquid level in a timed manner.

8. The method for monitoring the residual grease in the grease storage device of a lubricating pump according to claim 7, characterized in that: When the grease replenishment is completed in a timed manner, the current accumulated working time of the lubrication pump is reset to zero and the initial height of the distance measuring device is obtained.

9. A terminal device, comprising a memory and a processor, characterized in that: The memory stores a computer program that can be run on the processor, and when the processor loads and executes the computer program, the monitoring method according to any one of claims 1 to 8 is adopted.

10. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded and executed by the processor, the monitoring method according to any one of claims 1 to 8 is adopted.

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