Liquid level metering device of hydraulic oil tank of coal mining machine

Abstract

The utility model provides a liquid level metering device of a hydraulic oil tank of a coal mining machine, which comprises a mounting disc and a liquid level meter, the mounting disc is arranged at a connecting port of the hydraulic oil tank, the mounting disc is rotatably arranged on the connecting port, two communicating pipes are arranged on the mounting disc at intervals, and two ends of the liquid level meter are communicated with an inner cavity of the hydraulic oil tank through the two communicating pipes; the liquid level meter is driven to rotate synchronously by adjusting the rotating position of the mounting disc, so that the liquid level meter can be kept in a vertical state when the hydraulic oil tank is at different inclination angles. The liquid level metering device of the hydraulic oil tank of the coal mining machine solves the technical problem of liquid level display errors caused by the fact that a liquid level meter cannot be kept in a vertical state when the inclination angle of the working face of the coal mining machine changes in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of mining liquid level meters, in particular to a liquid level metering device for a hydraulic oil tank of a coal mining machine. Background Art

[0002] Currently, shearer hydraulic tank level gauges are mostly fixed, for example, by attaching them directly to the side of the tank. However, the shearer's working face's inclination often changes with terrain, and the level gauge cannot always remain upright during operation. This results in inaccurate level display and compromises operational precision. When the shearer's working face's inclination changes, the level gauge's position cannot be adjusted in real time, leading to errors in the level display and hindering accurate monitoring of the hydraulic tank's level.

[0003] Therefore, the prior art needs to be further developed. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a liquid level metering device for the hydraulic oil tank of a coal mining machine to solve the technical problem in the related technology that when the inclination angle of the working face of the coal mining machine changes, the liquid level meter cannot maintain a vertical state, thereby causing liquid level display errors.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a liquid level metering device for the hydraulic oil tank of a coal mining machine is provided, including a mounting plate and a liquid level gauge, the mounting plate is arranged at the connecting port of the hydraulic oil tank, the mounting plate is rotatably arranged on the connecting port, two connecting pipes are arranged on the mounting plate at intervals, and the two ends of the liquid level gauge are connected to the inner cavity of the hydraulic oil tank through the two connecting pipes; by adjusting the rotation position of the mounting plate, the liquid level gauge is driven to rotate synchronously, so that the liquid level gauge can maintain a vertical state when the hydraulic oil tank is at different inclination angles.

[0006] Furthermore, the liquid level metering device also includes a fixed component, which includes a fixed frame and a fixed shaft. The fixed frame is connected to the box wall of the hydraulic oil tank, and the fixed frame is arranged in the connecting port; the fixed shaft is arranged on the fixed frame, and the mounting plate is rotatably arranged on the fixed shaft to seal the connecting port and can rotate around the fixed shaft.

[0007] Furthermore, the liquid level metering device also includes a first sealing ring, which is arranged on the outer periphery of the mounting disk and located in the connecting port; when the mounting disk rotates in the connecting port, the first sealing ring seals the connecting port to prevent liquid leakage in the hydraulic oil tank.

[0008] Furthermore, the fixed shaft is arranged at the center of the connecting port, so that the mounting plate rotates with the fixed shaft as the rotation axis.

[0009] Furthermore, the fixed shaft is detachably arranged relative to the fixed frame.

[0010] Furthermore, a through hole is provided on the fixed shaft, and the fixing assembly also includes a fixing pin, which is detachably provided; after the fixed shaft passes through the mounting plate and the fixing frame in sequence, the fixing pin is inserted into the through hole to fix the mounting plate on the fixing frame.

[0011] Furthermore, a plug is provided at one end of the fixed shaft away from the through hole. When the fixed shaft passes through the mounting plate and the mounting plate is fixed on the fixing frame, the plug blocks the connection between the mounting plate and the fixed shaft.

[0012] Furthermore, the diameter of the plug is larger than the diameter of the fixed shaft to increase the sealing area.

[0013] Furthermore, the fixing assembly also includes a second sealing ring, which is arranged between the mounting disk and the plug and is used to seal the connection between the mounting disk and the fixed shaft.

[0014] Furthermore, the connecting port and the mounting plate are both circular in structure, and the distances between the two connecting pipes and the center of the mounting plate are equal.

[0015] Beneficial effects:

[0016] 1. By rotatably arranging the mounting plate on the connection port of the hydraulic oil tank and driving the liquid level gauge to rotate synchronously, the utility model ensures that the liquid level gauge can always remain in a vertical state even when the inclination angle of the coal mining machine working face changes, greatly reducing the liquid level display error caused by the change of the liquid level gauge posture and improving the accuracy of hydraulic oil tank liquid level monitoring.

[0017] 2. By providing the first sealing ring and the second sealing ring, the utility model effectively prevents the liquid in the hydraulic oil tank from leaking during the rotation of the mounting plate, thereby ensuring the safety and stability of the hydraulic system.

[0018] 3. The detachable setting of the fixed shaft relative to the fixed frame and the use of the fixing pin make the installation, removal and replacement of the mounting plate and the liquid level gauge more convenient and quick, reducing maintenance costs and work difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the use status of a fuel tank level gauge in the prior art;

[0020] Figure 2 It is a cross-sectional view of a liquid level metering device for a hydraulic oil tank of a coal mining machine used in an embodiment of the present utility model;

[0021] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0022] Figure 4It is a structural diagram of the fixing assembly used in the embodiment of the present utility model;

[0023] Figure 5 This is a diagram showing the use status of the liquid level metering device for the hydraulic oil tank of a coal mining machine adopted in an embodiment of the present utility model.

[0024] The above drawings include the following reference numerals:

[0025] 1. Mounting plate; 11. Connecting pipe; 12. Third sealing ring; 2. Liquid level gauge; 3. Hydraulic oil tank; 31. Connecting port; 4. Fixing assembly; 41. Fixing bracket; 42. Fixing shaft; 43. Fixing pin; 44. Plug; 45. Second sealing ring; 5. First sealing ring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] According to the embodiment of the present invention, a liquid level metering device for the hydraulic oil tank of a coal mining machine is provided. Figures 2 to 5 , including a mounting plate 1 and a liquid level gauge 2. The mounting plate 1 is arranged at the connection port 31 of the hydraulic oil tank 3. The mounting plate 1 is rotatably arranged on the connection port 31. Two connecting pipes 11 are arranged on the mounting plate 1 at intervals. The two ends of the liquid level gauge 2 are connected to the inner cavity of the hydraulic oil tank 3 through the two connecting pipes 11. By adjusting the rotation position of the mounting plate 1, the liquid level gauge 2 is driven to rotate synchronously, so that when the hydraulic oil tank 3 is at different inclination angles, the liquid level gauge 2 can remain in a vertical state. Figure 1 As shown in Figure 2, the inclination angle of the coal mining machine working face often changes with the terrain, causing the liquid level meter to be unable to always maintain a vertical state, resulting in liquid level display errors, thereby affecting the accuracy of the liquid level display. Figure 5As shown, after the traction part of the coal mining machine is tilted 30°, the hydraulic oil tank 3 also tilts accordingly. Since the mounting plate 1 of the liquid level metering device of the hydraulic oil tank of the coal mining machine in this embodiment rotates freely on the connection port 31 of the hydraulic oil tank 3 and drives the liquid level meter 2 to rotate synchronously, the liquid level meter 2 can always remain in a vertical state when the mounting plate 1 is rotated. Regardless of the inclination angle of the hydraulic oil tank 3, the liquid level meter 2 can always remain in a vertical state. This ensures the accuracy of the liquid level measurement and avoids measurement errors caused by the tilt of the oil tank. The connecting pipe 11 passes through the mounting plate 1 and is connected to the interior of the oil tank. In order to ensure that the liquid in the oil tank is not exposed, a third sealing ring 12 is provided at the connection between the connecting pipe 11 and the mounting plate 1 to seal the gap. During the operation of the coal mining machine, due to changes in the terrain and working surface, its inclination may be frequently adjusted. The liquid level metering device can be adjusted as the oil tank tilts, ensuring that the liquid level can be accurately measured under any circumstances. The liquid level metering device for the hydraulic oil tank of a coal shearer of this embodiment solves the technical problem in related arts that when the inclination angle of the working face of the coal shearer changes, the liquid level meter cannot remain in a vertical state, thereby causing errors in liquid level display.

[0028] See Figure 2 and Figure 3 The liquid level metering device of the hydraulic oil tank of the coal mining machine in this embodiment also includes a fixed component 4, which includes a fixed frame 41 and a fixed shaft 42. The fixed frame 41 is connected to the box wall of the hydraulic oil tank 3, and the fixed frame 41 is arranged in the connecting port 31; the fixed shaft 42 is arranged on the fixed frame 41, and the mounting disk 1 is rotatably arranged on the fixed shaft 42 to block the connecting port 31 and can rotate around the fixed shaft 42. The fixed frame 41 is firmly connected to the box wall of the hydraulic oil tank 3, providing a stable support base for the mounting disk 1. At the same time, the setting of the fixed shaft 42 enables the mounting disk 1 to rotate smoothly around it, avoiding possible shaking or deviation during the rotation process, thereby improving the stability of the liquid level measurement. The mounting disk 1 is placed on the fixed shaft 42, and the position of the liquid level meter 2 is adjusted by rotating the mounting disk 1. This design not only improves work efficiency, but also reduces the difficulty of operation.

[0029] See Figure 3 The liquid level metering device for the hydraulic oil tank of a coal mining machine in this embodiment also includes a first sealing ring 5. The first sealing ring 5 is disposed on the outer periphery of the mounting plate 1 and is located within the connecting port 31. When the mounting plate 1 rotates within the connecting port 31, the first sealing ring 5 seals the connecting port 31 to prevent leakage of liquid from the hydraulic oil tank 3. The first sealing ring 5 is disposed on the outer periphery of the mounting plate 1 and fits tightly within the connecting port 31, forming a reliable sealing barrier. When the mounting plate 1 rotates within the connecting port 31, the first sealing ring 5 can always maintain close contact with the connecting port 31, thereby effectively preventing leakage of liquid from the hydraulic oil tank 3.

[0030] See Figure 3 In the liquid level metering device for the hydraulic oil tank of a coal mining machine of this embodiment, a fixed shaft 42 is arranged at the center position of the connecting port 31, so that the mounting plate 1 rotates with the fixed shaft 42 as the rotation axis. The fixed shaft 42 is located at the center position, which can ensure that the mounting plate 1 always remains horizontal during the rotation process (relative to the tilt angle of the hydraulic oil tank), thereby driving the liquid level meter 2 to rotate synchronously and remain vertical. This helps to improve the accuracy of liquid level measurement and reduce measurement errors caused by the tilt of the mounting plate. In addition, placing the fixed shaft 42 at the center position of the connecting port 31 can ensure that the mounting plate 1 remains stable during the rotation process without shaking or deflecting.

[0031] See Figure 3 and Figure 4 In the liquid level metering device of the hydraulic oil tank of the coal mining machine of this embodiment, the fixed shaft 42 is detachably arranged relative to the fixed frame 41 to facilitate cleaning, maintenance and replacement.

[0032] See Figure 3 and Figure 4 In this embodiment of the liquid level metering device for the hydraulic oil tank of a coal mining machine, a fixed shaft 42 is provided with a through-hole. The fixing assembly 4 also includes a removable fixing pin 43. After the fixed shaft 42 passes through the mounting plate 1 and the fixing frame 41, the fixing pin 43 is inserted into the through-hole to secure the mounting plate 1 to the fixing frame 41. The combination of the through-hole and the fixing pin 43 allows the mounting plate 1 to be easily connected and disconnected from the fixing frame 41. The operator simply passes the fixing shaft 42 through the corresponding holes in the mounting plate 1 and the fixing frame 41 and then inserts the fixing pin 43 to complete the fixation, greatly simplifying the installation process.

[0033] See Figure 3 In this embodiment of the liquid level metering device for the hydraulic oil tank of a coal mining machine, a plug 44 is provided on the end of the fixed shaft 42 away from the perforation. When the fixed shaft 42 passes through the mounting plate 1 and is fixed to the fixing bracket 41, the plug 44 seals the connection between the mounting plate 1 and the fixed shaft 42. The design of the plug 44 effectively blocks the gap between the mounting plate 1 and the fixed shaft 42, thereby preventing the liquid in the hydraulic oil tank 3 from leaking through this gap.

[0034] See Figure 3 In this embodiment of the coal mining machine hydraulic oil tank level metering device, the diameter of the plug 44 is larger than that of the fixed shaft 42 to increase the sealing area. The larger diameter of the plug 44 increases the contact area between the plug 44, the mounting plate 1, and the fixed shaft 42. This larger contact area provides a better seal, effectively preventing leakage of the hydraulic oil tank from the joints.

[0035] See Figure 3In this embodiment of the shearer hydraulic oil tank level metering device, the fixed assembly 4 also includes a second sealing ring 45, positioned between the mounting plate 1 and the plug 44. This second sealing ring 45 seals the connection between the mounting plate 1 and the fixed shaft 42. This second sealing ring 45 acts as an additional sealing layer, further reducing the gap between the mounting plate 1 and the fixed shaft 42, thereby preventing leakage of liquid from the hydraulic oil tank through this gap. This design significantly improves the sealing performance of the level metering device and ensures stable operation of the hydraulic system.

[0036] See Figure 4 and Figure 5 In this embodiment of the shearer hydraulic oil tank level metering device, the connection port 31 and mounting plate 1 are both circular, and the distances between the two connecting pipes 11 and the center of the mounting plate 1 are equal. This design improves sealing performance and enhances structural stability for the shearer hydraulic oil tank level metering device.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0039] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0040] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0041] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A liquid level metering device for a hydraulic oil tank of a coal mining machine, characterized in that: The invention comprises a mounting plate (1) and a liquid level gauge (2), wherein the mounting plate (1) is arranged at a connection port (31) of a hydraulic oil tank (3), the mounting plate (1) is rotatably arranged on the connection port (31), two connecting pipes (11) are arranged on the mounting plate (1) at intervals, and the two ends of the liquid level gauge (2) are connected to the inner cavity of the hydraulic oil tank (3) through the two connecting pipes (11); By adjusting the rotational position of the mounting plate (1), the liquid level gauge (2) is driven to rotate synchronously, so that when the hydraulic oil tank (3) is at different inclination angles, the liquid level gauge (2) can maintain a vertical state.

2. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 1, characterized in that: The liquid level metering device further comprises a fixing assembly (4), the fixing assembly (4) comprising a fixing frame (41) and a fixing shaft (42), the fixing frame (41) being connected to the box wall of the hydraulic oil tank (3), the fixing frame (41) being arranged in the connecting port (31); the fixing shaft (42) being arranged on the fixing frame (41), and the mounting plate (1) being rotatably arranged on the fixing shaft (42) to block the connecting port (31) and being capable of rotating around the fixing shaft (42).

3. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 2, characterized in that: The liquid level metering device further comprises a first sealing ring (5), which is arranged on the outer periphery of the mounting plate (1) and located in the connecting port (31); when the mounting plate (1) rotates in the connecting port (31), the first sealing ring (5) seals the connecting port (31) to prevent leakage of liquid in the hydraulic oil tank (3).

4. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 2, characterized in that: The fixed shaft (42) is arranged at the center of the connecting port (31), so that the mounting plate (1) rotates with the fixed shaft (42) as the rotation axis.

5. The liquid level measuring device for the hydraulic oil tank of a coal mining machine according to claim 4, characterized in that: The fixed shaft (42) is detachably arranged relative to the fixed frame (41).

6. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 5, characterized in that: The fixing shaft (42) is provided with a through hole, and the fixing assembly (4) further comprises a fixing pin (43), and the fixing pin (43) is detachably provided; after the fixing shaft (42) passes through the mounting plate (1) and the fixing frame (41) in sequence, the fixing pin (43) is inserted into the through hole, so that the mounting plate (1) is fixed on the fixing frame (41).

7. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 6, characterized in that: A plug (44) is further provided at one end of the fixed shaft (42) away from the through hole. When the fixed shaft (42) passes through the mounting plate (1) and fixes the mounting plate (1) on the fixing frame (41), the plug (44) blocks the connection between the mounting plate (1) and the fixed shaft (42).

8. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 7, characterized in that: The diameter of the plug (44) is larger than the diameter of the fixed shaft (42) so as to increase the sealing area.

9. The liquid level measuring device for the hydraulic oil tank of a coal mining machine according to claim 8, characterized in that: The fixing assembly (4) further comprises a second sealing ring (45), which is arranged between the mounting plate (1) and the plug (44) and is used to seal the connection between the mounting plate (1) and the fixing shaft (42).

10. The liquid level metering device for the hydraulic oil tank of a coal mining machine according to claim 1, characterized in that: The connection port (31) and the installation disk (1) are both circular structures, and the distances between the two connecting pipes (11) and the center of the installation disk (1) are equal.

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