Automatic oiling and low liquid level alarm device for hydraulic station of elevator
By using an automatic refueling and low-level alarm device, the hydraulic station achieves real-time monitoring of the oil level and automatic refueling, solving the problem of untimely refueling in traditional hydraulic stations and improving the operational stability and safety of the equipment.
Patent Information
- Application Number
- CN202520116304.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Traditional hydraulic station refueling methods rely on manual inspections, which can lead to equipment wear and safety hazards due to untimely refueling. Furthermore, low oil levels are difficult to detect in a timely manner, affecting the safe operation of the hoist.
It adopts an automatic refueling and low liquid level alarm device. The oil level is detected by the first and second liquid level sensors, the controller controls the oil pump to automatically refuel, and it is equipped with a third liquid level sensor and alarm to realize real-time monitoring and alarm of the oil level.
Ensure the hydraulic station has the correct oil level to avoid equipment wear, reduce downtime, improve equipment utilization and production efficiency, reduce maintenance costs, detect potential faults in a timely manner, and reduce safety risks.
Smart Images
Figure CN223608996U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of hydraulic stations, in particular to an automatic oiling and low liquid level alarm device for a hoist hydraulic station. BACKGROUND
[0002] The coal mine hoist is responsible for lifting personnel and materials in the mine, is the hub connecting the production systems above and below the mine, is often referred to as the throat of mine production, and occupies an extremely important position in mine equipment. For the hoist, the safety and reliability of operation directly affect the safety production and economic benefits of the coal mine, and the stable operation of the hydraulic station, as an indispensable important component of the hoist, is crucial to production safety and efficiency.
[0003] In the related art, the traditional oiling method of the hydraulic station relies on manual inspection and manual operation, and there is a risk of equipment wear and even shutdown due to untimely oiling. At the same time, when the oil pipe leaks oil or the oil level suddenly drops too fast, if it is not discovered in time, the hoist cannot be safely operated, which seriously threatens the safety of the auxiliary shaft hoisting and has serious safety hazards. CONTENT OF THE INVENTION
[0004] The purpose of the present disclosure is to provide an automatic oiling and low liquid level alarm device for a hoist hydraulic station, which at least partially solves the problems existing in the related art.
[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an automatic oiling and low liquid level alarm device for a hoist hydraulic station, comprising a hydraulic station oil tank and a centralized oiling station, wherein the centralized oiling station is provided with an oil pump, the oil pump is communicated with the hydraulic station oil tank through a pipeline, one side of the hydraulic station oil tank is provided with a transparent oil window, a first liquid level sensor and a second liquid level sensor are installed on the transparent oil window, wherein the first liquid level sensor is arranged above the second liquid level sensor, the automatic oiling and low liquid level alarm device for the hoist hydraulic station further comprises a controller, and the controller is electrically connected with the first liquid level sensor, the second liquid level sensor and the oil pump respectively.
[0006] Optionally, a third liquid level sensor is further installed on the transparent oil window, and the automatic oiling and low liquid level alarm device for the hoist hydraulic station further comprises an alarm, and the controller is electrically connected with the third liquid level sensor and the alarm respectively.
[0007] Optionally, the third liquid level sensor is arranged below the second liquid level sensor.
[0008] Optionally, the third liquid level sensor is flush with the second liquid level sensor in the horizontal direction.
[0009] Optionally, the alarm comprises a loudspeaker and / or an indicator light.
[0010] Optionally, the third liquid level sensor is an ultrasonic liquid level transmitter.
[0011] Optionally, the first liquid level sensor and the second liquid level sensor are both ultrasonic liquid level transmitters.
[0012] Optionally, the transparent oil window is made of acrylic.
[0013] Optionally, the controller includes a relay.
[0014] Optionally, the controller further includes a contactor electrically connected to the relay.
[0015] With the above technical solution, the automatic oiling function of the device can ensure that the hydraulic station always maintains a proper oil level, avoiding wear caused by insufficient oil lubrication of hydraulic components. For example, key components such as hydraulic pumps and hydraulic valves can work normally under sufficient oil, prolonging the service life and reducing equipment maintenance costs. Because it can automatically supplement oil, the hoist hydraulic station can run continuously and stably, reducing the number of shutdowns caused by low oil levels. In continuous production scenarios, it can effectively improve the working time of the hoist and improve the overall utilization of the equipment, thereby improving production efficiency. The device can accurately control the amount of oil added according to pre-set parameters, avoiding overfilling or underfilling, which not only ensures the normal operation of the hydraulic station, but also prevents oil waste and improves resource utilization efficiency. The device has a simple structure, is easy to operate, is stable in quality, has high use efficiency, and reduces manual labor.
[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the following detailed description, serve to explain the present disclosure. The drawings are as follows:
[0018] Figure 1 is a structural schematic diagram of a hoist hydraulic station automatic oiling and low liquid level alarm device provided by an exemplary embodiment of the present disclosure.
[0019] Explanation of reference signs
[0020] 1 - hydraulic station oil tank; 11 - transparent oil window; 12 - first liquid level sensor; 13 - second liquid level sensor; 14 - third liquid level sensor; 2 - centralized oiling station; 21 - oil pump; 3 - controller; 4 - alarm DETAILED DESCRIPTION
[0021] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0022] In the present disclosure, the orientation words "upper", "lower", "top", "bottom" are defined based on the actual direction of use of the relevant components, unless otherwise stated. "Inner", "outer" are relative to the contour of the respective parts themselves. The use of the terms "first", "second", etc. is intended to distinguish different components and does not have sequential and important nature. In the present disclosure, the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements.
[0023] In the related art, the traditional hydraulic station refueling method relies on manual inspection and manual operation, which has the risk of equipment wear and even shutdown due to untimely refueling, and it is difficult to discover the low oil level in time.
[0024] In view of this, with reference to Figure 1 The present disclosure provides an elevator hydraulic station automatic refueling and low liquid level alarm device, which can include a hydraulic station oil tank 1 and a centralized refueling station 2. The centralized refueling station 2 is provided with an oil pump 21, the oil pump 21 is communicated with the hydraulic station oil tank 1 through a pipeline, one side of the hydraulic station oil tank 1 is provided with a transparent oil window 11, the transparent oil window 11 is installed with a first liquid level sensor 12 and a second liquid level sensor 13, wherein the first liquid level sensor 12 is placed above the second liquid level sensor 13. The elevator hydraulic station automatic refueling and low liquid level alarm device can also include a controller 3, which is electrically connected with the first liquid level sensor 12, the second liquid level sensor 13 and the oil pump 21 respectively. When the second liquid level sensor 13 detects that the liquid level of the hydraulic station oil tank 1 decreases to the height of the second liquid level sensor 13, the controller 3 controls the oil pump 21 of the centralized refueling station 2 to start, and the centralized refueling station 2 automatically supplements oil to the hydraulic station oil tank 1; when the first liquid level sensor 12 detects that the liquid level of the hydraulic station oil tank 1 reaches the height of the first liquid level sensor 12, the controller 3 controls the oil pump 21 of the centralized refueling station 2 to close and stop supplementing oil to the hydraulic station oil tank 1. The device runs stably, the refueling error can be controlled within ±1L, the maintenance efficiency of the hydraulic station is improved, the labor cost and equipment downtime are reduced, and significant economic and safety benefits are brought to the enterprise.
[0025] By the above technical solution, the automatic oiling function of the device can ensure that the hydraulic station always maintains a suitable oil level, avoiding wear caused by insufficient oil lubrication of hydraulic components. For example, key components such as hydraulic pumps and hydraulic valves can work normally under sufficient oil, prolonging their service life and reducing equipment maintenance costs. Because it can automatically supplement oil, the hoist hydraulic station can run continuously and stably, reducing the number of shutdowns caused by low oil levels. In a continuous production operation scenario, it can effectively improve the working time of the hoist and the overall utilization of the equipment, thereby improving production efficiency. The device can accurately control the amount of oil added according to pre-set parameters, avoiding the situation of adding too much or too little oil, which not only ensures the normal operation of the hydraulic station, but also prevents oil waste and improves resource utilization efficiency. The device has a simple structure, is easy to operate, has stable quality, is high in use efficiency, and reduces manual labor.
[0026] In some embodiments, with reference to Figure 1 , a third liquid level sensor 14 can also be installed on the transparent oil window 11, and the hoist hydraulic station automatic oiling and low liquid level alarm device can further include an alarm 4, and the controller 3 is electrically connected with the third liquid level sensor 14 and the alarm 4 respectively. The alarm response time of the alarm 4 can be shortened to within 1s, effectively avoiding equipment failure shutdown caused by low oil level. When the third liquid level sensor 14 detects that the liquid level of the hydraulic station oil tank 1 decreases to the height of the third liquid level sensor 14, the controller 3 controls the alarm 4 to issue an alarm. The device can issue an alarm in time when the oil level drops to a critical value, reminding the staff to check the hydraulic station, which helps to find possible leakage points or other fault hidden dangers such as oil pipe rupture and seal damage in time, so that appropriate measures can be taken for repair to prevent the problem from further deteriorating. Low oil level may cause hydraulic station failure, such as abnormal hydraulic system pressure, excessive oil temperature, etc., which may cause serious safety accidents such as hoist out-of-control operation, etc. The device can timely find and notify the staff, so that potential safety hazards can be found and handled in the early stage, effectively reducing safety risks. The device successfully realizes the functions of automatic monitoring and automatic oiling of the hydraulic station oil level, and the oil level control accuracy reaches ±2mm.
[0027] Further, with reference to Figure 1 , the third liquid level sensor 14 can be placed below the second liquid level sensor 13. If the oil pump 21 at the centralized oiling station 2 fails to add oil to the hydraulic station oil tank 1 in time, causing the oil tank oil level to decrease to the height of the third liquid level sensor 14, at this time, the controller 3 controls the alarm 4 to issue an alarm to remind the staff to add oil in time or stop for maintenance.
[0028] Further, the third liquid level sensor 14 can be flush with the second liquid level sensor 13 in the horizontal direction. In this way, the alarm can be issued while the oil is being replenished, allowing the staff to learn the oil level and oil replenishment in a timely manner.
[0029] The alarm 4 can include a speaker and an indicator light, or one of the speaker and the indicator light. Since there are cases where the staff cannot notice the indicator light in the first time, the device can issue a sound alarm through the speaker. In this way, it is not necessary to manually observe the oil tank level periodically, and the low oil level alarm can be issued in a timely manner to avoid safety accidents.
[0030] Specifically, the third liquid level sensor 14 can be an ultrasonic liquid level transmitter. The ultrasonic liquid level transmitter determines the liquid level by emitting high-frequency sound waves and calculating the time required for the sound waves to reflect back to the sensor. It has no moving parts, compact structure, and is reliable and not affected by the nature of the medium, suitable for non-contact measurement of high-viscosity liquids and bulk solid materials.
[0031] Similarly, the first liquid level sensor 12 and the second liquid level sensor 13 can both be ultrasonic liquid level transmitters. They have the same advantages as the third liquid level sensor 14 and will not be described here.
[0032] The material of the transparent oil window 11 can be acrylic. Acrylic has good transparency, chemical stability and weather resistance, and is easy to process. The material of the transparent oil window 11 can also be glass, polypropylene, or other transparent materials for easy observation of the oil level.
[0033] In some embodiments, the controller 3 can include a relay. The relay is an automatic switch element with isolation function and is an important control element.
[0034] Further, the controller 3 can also include a contactor electrically connected to the relay. The contactor is a device that can quickly cut off the AC and DC main circuit and can frequently turn on and off the control circuit of large current, and is a high-power switching device.
[0035] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0036] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not describe various possible combinations again.
[0037] Furthermore, the various embodiments of the present disclosure can be arbitrarily combined with each other unless they contradict each other, and it should be understood that the same should be construed as being included in the disclosure of the present disclosure.
Claims
1. A hoist hydraulic station automatic oiling and low liquid level alarm device, characterized in that, The hydraulic station oil tank and the centralized oil filling station are provided with an oil pump, the oil pump is communicated with the hydraulic station oil tank through a pipeline, one side of the hydraulic station oil tank is provided with a transparent oil window, the transparent oil window is provided with a first liquid level sensor and a second liquid level sensor, the first liquid level sensor is arranged above the second liquid level sensor, the automatic oil filling and low liquid level alarm device of the hydraulic station of the elevator further comprises a controller, and the controller is electrically connected with the first liquid level sensor, the second liquid level sensor and the oil pump respectively.
2. The automatic oiling and low fluid level alarm device for the hydraulic station of a hoist according to claim 1, characterized in that, The transparent oil window is further provided with a third liquid level sensor, and the automatic oil filling and low liquid level alarm device of the hydraulic station of the elevator further comprises an alarm, and the controller is electrically connected with the third liquid level sensor and the alarm respectively.
3. The automatic oiling and low fluid level alarm device for the hydraulic station of the hoist according to claim 2, characterized in that, The third liquid level sensor is arranged below the second liquid level sensor.
4. The automatic oiling and low fluid level alarm device for the hydraulic station of a hoist according to claim 2, characterized in that, The third liquid level sensor and the second liquid level sensor are flush in the horizontal direction.
5. The automatic oiling and low fluid level alarm device for hydraulic station of hoist according to claim 2, characterized in that, The alarm comprises a loudspeaker and / or an indicator light.
6. The automatic oiling and low fluid level alarm device for hydraulic station of hoist according to claim 2, characterized in that, The third liquid level sensor is an ultrasonic liquid level transmitter.
7. The automatic oiling and low fluid level alarm device for hydraulic station of hoist according to claim 1, characterized in that, The first liquid level sensor and the second liquid level sensor are both ultrasonic liquid level transmitters.
8. The automatic oiling and low fluid level alarm device for hydraulic station of hoist according to claim 1, characterized in that, The material of the transparent oil window is acrylic.
9. The automatic oiling and low fluid level alarm device for hydraulic station of hoist according to claim 1, characterized in that, The controller comprises a relay.
10. The automatic oiling and low fluid level alarm device for the hydraulic station of a hoist according to claim 9, characterized in that, The controller further comprises a contactor electrically connected with the relay.