Multi-parameter detection sensing device for lubricating oil of gearbox of electric locomotive

Abstract

The utility model discloses an electric locomotive gearbox lubricating oil multi-parameter detection sensing device which comprises a sensor and a shell, and the sensor comprises a sensing processing circuit board, a connecting cable, a detection circuit board and a measuring element which are connected in sequence; the shell is provided with an installation external thread with the axial direction being the first direction, a first cavity for containing the sensing processing circuit board, a wire passing through hole for the connecting cable to penetrate through, a second cavity for containing the detection circuit board and an oil inlet cavity for containing the measuring element are sequentially formed in the shell in the first direction, and insulating structural adhesive is poured into the second cavity. The multi-parameter detection sensing device for the lubricating oil of the gearbox of the electric locomotive is connected to an existing oil discharge port of the gearbox of the CEA1A1 type electric locomotive through the installation external threads, and is suitable for upgrading and reconstruction of existing equipment; the detection circuit board is packaged in the insulating structural adhesive, and the sensing processing circuit board is connected with the detection circuit board through the connecting cable, so that respective maintenance and replacement of the circuit boards are facilitated, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sensor parameter calibration methods, specifically to a multi-parameter detection sensor device for lubricating oil in the gearbox of an electric locomotive. Background Technology

[0002] The CEA1A1 electric locomotive serves as the traction power source for heavy-haul trains transporting bulk raw materials (such as coal and ore). This locomotive consists of three cars, each with two bogies, each bogie with two axles, and each axle equipped with a gearbox. As a critical transmission component, the health of the gearbox plays a vital role in the safe operation of heavy-haul trains. The CEA1A1 electric locomotive provides heavy traction, and the meshing force between the gears in the gearbox is large. During long-term continuous operation, the gears in the gearbox constantly mesh, and the friction and wear between the gears cause the lubricating oil temperature to rise and increase abrasive impurities, leading to continuous deterioration of the lubricating oil quality and a weakening of its lubricating effect. This results in insufficient lubrication between the meshing gears, accelerating wear on the gear meshing surfaces, and ultimately causing gearbox failure, thus affecting the safe operation of heavy-haul trains.

[0003] Currently, the monitoring of gearbox lubricating oil condition in CEA1A1 electric locomotives relies solely on periodic manual observation of oil quality changes through a transparent glass viewing window and oil level checks using a dipstick. Oil quality parameters such as viscosity, abrasive particle size, and moisture content can only be measured offline by sampling from inside the gearbox. Therefore, utilizing sensor technology for online monitoring of multiple parameters of the gearbox lubricating oil, including oil quality characteristics, temperature, and level, to monitor lubricating oil deterioration in real time and ensure timely replacement of the gearbox lubricating oil, is of great significance for ensuring safe operation under heavy loads. However, monitoring multiple parameters of the gearbox lubricating oil using a separate sensor for each parameter would require drilling holes in the gearbox to install multiple sensors, inevitably affecting the structural characteristics of the existing locomotive gearbox and consequently impacting the safe operation of heavy-load locomotives. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a multi-parameter detection sensor for lubricating oil in the gearbox of electric locomotives with low installation and maintenance costs.

[0005] In order to achieve the above-mentioned technical effects, the technical solution of this utility model is as follows: a multi-parameter detection sensing device for lubricating oil in the gearbox of an electric locomotive, comprising a sensor and a housing, wherein the sensor comprises a sensing processing circuit board, a connecting cable, a detection circuit board and a measuring element connected in sequence;

[0006] The housing is provided with an external mounting thread in the first direction. Along the first direction, the housing is provided with a first cavity for accommodating the sensing processing circuit board, a through hole for passing through the connecting cable, a second cavity for accommodating the detection circuit board, and an oil inlet cavity for accommodating the measuring element. The second cavity is filled with insulating structural adhesive.

[0007] A preferred technical solution is that the housing includes a protective cover and a mounting cylinder connected to each other, and the oil inlet chamber is the oil inlet chamber of the protective cover; a mounting plate is sandwiched between the protective cover and the mounting cylinder, and the mounting plate is provided with a through hole and / or notch for the measuring element to pass through.

[0008] The preferred technical solution is that the mating ends of the protective cover and the mounting cylinder are both located at the plate stop, and the mounting plate is fixedly clamped at the plate stop.

[0009] A preferred technical solution is that the oil inlet cavity of the mounting cylinder includes an injection section and a potting section that are interconnected. The potting section is located between the injection section and the oil inlet cavity, and the inner diameter of the potting section is larger than the inner diameter of the injection section.

[0010] A preferred technical solution is that the housing includes a connecting cylinder that is sealed and connected to the mounting cylinder, and the wire through hole and the first cavity are disposed in the connecting cylinder.

[0011] A preferred technical solution is that the connecting cylinder has an opening in the first cavity, and the opening is detachably and sealingly connected to an end cap.

[0012] A preferred technical solution is that the protective cover has a top wall opposite to the docking end opening and a side wall that surrounds the docking end opening, and both the top wall and the side wall are provided with oil inlets.

[0013] A preferred technical solution is that the mounting external thread is provided on the connecting cylinder, and the connecting cylinder has an abutting boss on its outer surface opposite to the mounting cylinder, the outer diameter of the abutting boss being larger than the outer diameter of the mounting external thread.

[0014] A preferred technical solution is that the cavity wall of the first cavity is provided with a positioning element, and the positioning element is detachably and fixedly connected to the sensing processing circuit board.

[0015] A preferred technical solution is that a sealing ring is provided in the angle between the mounting external thread and the abutting boss.

[0016] The advantages and beneficial effects of this utility model are as follows:

[0017] The multi-parameter detection sensor for lubricating oil in the gearbox of electric locomotives is connected to the existing oil discharge port of the CEA1A1 type electric locomotive gearbox via an external thread, making it suitable for upgrading and retrofitting existing equipment.

[0018] The detection circuit board is encapsulated in insulating structural adhesive, and the sensing processing circuit board is connected to the detection circuit board via connecting cables, which facilitates the separate maintenance or replacement of the two circuit boards and helps reduce the maintenance cost of the sensor device. Attached Figure Description

[0019] Figure 1 This is a front view of the multi-parameter detection sensor device for lubricating oil in the gearbox of an electric locomotive, according to an embodiment of this utility model.

[0020] Figure 2 This is a cross-sectional view of the multi-parameter detection sensor device for lubricating oil in the gearbox of an electric locomotive, according to an embodiment of this utility model.

[0021] Figure 3 yes Figure 1 Structural diagram of the connecting cylinder;

[0022] Figure 4 yes Figure 1 Structural diagram of the middle mounting cylinder;

[0023] Figure 5 yes Figure 1 Structural diagram of the mounting plate;

[0024] Figure 6 yes Figure 1 Cross-sectional view of the central protective cover;

[0025] Figure 7 yes Figure 1 Top view of the central protective cover;

[0026] In the diagram: 1-End cap, 2-Connecting cylinder, 3-Mounting cylinder, 4-Mounting plate, 5-Protective cover, 6-First sealing ring, 7-Second sealing ring, 8-Sensing processing circuit board, 9-Connecting cable, 10-Detection circuit board, 11-Measuring element;

[0027] 201-First external thread, 202-Circuit board fixing threaded hole, 203-Connecting thread, 204-First internal thread, 205-Inner sealing groove, 206-Wire through hole, 207-Outer sealing groove, 208-First cavity;

[0028] 301 - Plate stop, 302 - Second external thread, 303 - Large external thread, 304 - Wire hole, 305 - Oil inlet cavity;

[0029] 401 - First gap, 402 - Second gap, 403 - Third gap;

[0030] 501 - Internal thread, 502 - Oil inlet cavity, 503 - First tightening face, 504 - Side wall oil inlet, 505 - Top surface oil inlet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that, unless otherwise stated, "above" and "below" include the number itself, "at least one" means "one or more", and "multiple" means a combination of two or more.

[0033] The following description illustrates exemplary implementations in more detail. Guidance is provided through a series of embodiments that can be used in various combinations. In each instance, the examples are listed only as representative groups and should not be construed as exhaustive. Example

[0034] like Figure 1-2 As shown, the housing of the multi-parameter detection sensor for gearbox lubricating oil in electric locomotives includes an end cap 1, a connecting cylinder 2, a mounting cylinder 3, a mounting plate 4, a protective cover 5, a first sealing ring 6, and a second sealing ring 7.

[0035] The sensor of the multi-parameter detection sensing device for lubricating oil in the gearbox of an electric locomotive includes a sensing processing circuit board 8, a connecting cable 9, a detection circuit board 10, and a measuring element 11 connected in sequence.

[0036] End cap 1 and connecting cylinder 2 are connected by threads; connecting cylinder 2 is connected and fixed to the oil unloading port of gearbox of CEA1A1 type electric locomotive by connecting threads, and a second sealing ring 7 is used to prevent oil leakage; connecting cylinder 2 is connected to the small external thread of mounting cylinder 3 by internal thread, and a first sealing ring 6 is used to prevent oil leakage; mounting plate 4 is inserted into the plate stop of mounting cylinder 3, and protective cover 5 is connected to the internal thread of mounting cylinder 2 by large external thread, and the step formed by the oil inlet cavity of protective cover 5 and internal thread is used to press against mounting plate 4 for axial fixation.

[0037] like Figure 3As shown, the connecting cylinder includes a first external thread 201, a circuit board fixing threaded hole 202, a connecting thread 203, a first internal thread 204, an inner sealing groove 205, a wire through hole 206, an outer sealing groove 207, and a first cavity 208. Within the cavity formed by the connection between the first external thread 201 and the end cap 1 of the connecting cylinder 2, the sensing processing circuit board 8 is fixed to the upper part of the connecting cylinder 2 via the circuit board fixing thread 202. The lower part of the connecting cylinder 2 is machined with a connecting thread 203 of M26×1.5-6g and a length of 22mm, through which... The connecting thread 203 is connected to the oil unloading port of the gearbox of the CEA1A1 electric locomotive, and the second sealing ring 7 placed in the outer sealing groove 207 achieves overall leakage prevention; the sealing ring is placed in the inner sealing groove 205 of the connecting cylinder 2, and the connecting cylinder 2 is connected to the large external thread of the mounting cylinder 3 through the first internal thread 204, and tightened so that the connecting cylinder 2 and the mounting cylinder 3 squeeze the sealing ring to prevent oil leakage; the wire through hole 206 in the center of the connecting cylinder 2 is used for the wire passing of the connecting cable 9 between the sensing processing circuit board 8 and the detection circuit board 10 in the mounting cylinder 3.

[0038] like Figure 4 As shown, the mounting cylinder includes a plate stop 301, a second external thread 302, a third external thread 303, an injection section 304, a potting section 305, and a tightening face. After the mounting plate 4 is inserted into the plate stop 301, the measuring element 11 on the detection circuit board 10 inside the mounting cylinder 3 passes through the first notch 401 (semi-circular notch), the second notch 402 (rectangular notch), and the third notch 403 (semi-circular elongated notch) of the mounting plate 4. The mounting plate 4 and the mounting cylinder 3 form a semi-closed potting section 305. The detection circuit board 10 is placed in this oil inlet cavity. The connecting cable 9 between the detection circuit board 10 and the sensing processing circuit board 8 inside the connecting cylinder 2 passes through the through hole 304. After the line passes through, insulating structural adhesive is injected into the oil inlet cavity from the adhesive injection section 304, filling the gap between the notch of the mounting plate 4 and the measuring element 11 on the detection circuit board 10. The detection circuit board 10 is completely wrapped in the insulating structural adhesive, and the insulating structural adhesive is tightly glued to the oil inlet cavity of the mounting cylinder 3 to prevent lubricating oil from entering the rear cavity of the mounting seat. The mounting cylinder 3 is connected to the connecting cylinder 2 through the third external thread 303 and to the protective cover 5 through the second external thread 302. The mounting plate 4 is axially fixed by the step formed by the oil inlet cavity of the protective cover 5 and the thread. The tightening clamp on the mounting cylinder 3 is used to clamp the thread tightening tool of the connecting cylinder 2 and the protective cover 5 for easy thread tightening.

[0039] like Figure 5As shown, the mounting plate structure includes a first notch 401, a second notch 402, and a third notch 403 on the detection circuit board 10 inside the mounting cylinder 3, allowing the viscosity measuring element, oil temperature measuring element, and oil level and moisture value measuring element on the mounting plate 4 to pass through the first notch 401, the second notch 402, and the third notch 403, respectively, so that each measuring element 11 is exposed in the protective cover 5 and in contact with the oil inside the protective cover 5; the semi-circular diameter of the first notch 401 is 1 mm larger than the diameter of the viscosity measuring element, which is 4 mm in this embodiment, and the notch width is equal to the semi-circular diameter, extending to the edge of the mounting plate; the width of the second notch 402 is 0.5 mm larger than the thickness of the oil temperature measuring element, which is 1.5 mm in this embodiment, extending to the edge of the mounting plate; the semi-circular diameter of the third notch 403 is 1 mm larger than the diameter of the oil level and moisture value measuring element, which is 4 mm in this embodiment, and the notch width is equal to the semi-circular diameter, extending to the edge of the mounting plate.

[0040] like Figure 6-7 The protective cover includes a second internal thread 501, an oil inlet cavity 502, a first tightening clamping surface 503, a side wall oil inlet 504, and a top surface oil inlet 505. The protective cover 5 is connected to the mounting cylinder 3 through the second internal thread 501, and the thread is tightened by clamping the first tightening clamping surface 503 with a tightening tool. The protective cover 5 has 6 through holes with a diameter of 4mm on the side wall and the top surface. The side wall oil inlet 504 and the top surface oil inlet 505 are used for lubricating oil to enter the oil inlet cavity 502 of the protective cover body and make full contact with each measuring element 11.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-parameter detection sensor device for electric locomotive gear box lubricating oil, characterized in that, The device includes a sensor and a housing. The sensor includes a sensing processing circuit board, a connecting cable, a detection circuit board, and a measuring element connected in sequence. The housing is provided with an external mounting thread in the first direction. Along the first direction, the housing is provided with a first cavity for accommodating the sensing processing circuit board, a through hole for passing through the connecting cable, a second cavity for accommodating the detection circuit board, and an oil inlet cavity for accommodating the measuring element. The second cavity is filled with insulating structural adhesive.

2. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 1, characterized in that, The housing includes a protective cover and a mounting cylinder connected to each other, and the oil inlet chamber is the oil inlet chamber of the protective cover; a mounting plate is sandwiched between the protective cover and the mounting cylinder, and the mounting plate is provided with through holes and / or notches for the measuring element to pass through.

3. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 2, characterized in that, The joint ends of the protective cover and the mounting cylinder are both located at the plate stop, and the mounting plate is fixedly clamped at the plate stop.

4. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 3, characterized in that, The oil inlet chamber of the mounting cylinder includes an injection section and a potting section that are interconnected. The potting section is located between the injection section and the oil inlet chamber, and the inner diameter of the potting section is larger than the inner diameter of the injection section.

5. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 2, characterized in that, The housing includes a connecting cylinder that is sealed and connected to the mounting cylinder, and the through hole and the first cavity are disposed in the connecting cylinder.

6. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 5, characterized in that, The connecting cylinder has an opening in the first cavity, and the opening is detachably and sealingly connected to an end cap.

7. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 2, characterized in that, The protective cover has a top wall opposite to the docking end opening and a side wall that surrounds the docking end opening, and both the top wall and the side wall are provided with oil inlets.

8. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 5, characterized in that, The mounting external thread is provided on the connecting cylinder, and the connecting cylinder has an abutment boss on its outer surface opposite to the mounting cylinder. The outer diameter of the abutment boss is larger than the outer diameter of the mounting external thread.

9. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 5, characterized in that, The cavity wall of the first cavity is provided with a positioning element, which is detachably and fixedly connected to the sensing processing circuit board.

10. The electric locomotive gear box lubricating oil multi-parameter detection sensor device according to claim 8, characterized in that, A sealing ring is provided in the angle between the mounting external thread and the abutting boss.

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