Lubricating grease resistivity measuring device

Abstract

The utility model discloses a lubricating grease resistivity measuring device, and relates to the technical field of lubricating grease resistivity measurement, the lubricating grease resistivity measuring device comprises a base, a flat filling assembly and an accommodating assembly, a protective shell is installed above the base, a current-conducting plate is fixed in the protective shell, an insulating outer ring is fixed on the outer side above the current-conducting plate, and the insulating outer ring is fixed on the base. An insulating inner ring is arranged on the inner side of the upper portion of the conductive plate, a containing assembly is arranged in the middle of the insulating inner ring, and a leveling and filling assembly is arranged on the left side of the upper portion of the insulating outer ring. According to the lubricating grease resistivity measuring device, a leveling scraper can be driven to rotate through a micro motor, the heights of the micro motor and the leveling scraper can be adjusted by rotating a threaded rod in a threaded cylinder during use, and when the micro motor moves to the uppermost side, the lower side face of the leveling scraper is flush with the surface of a containing box; and the lubricating grease in the containing box can be leveled layer by layer through the leveling scraper, so that the lubricating grease is conveniently compacted, and the trouble of repeated manual smearing and leveling is avoided.

Description

Technical Field

[0001] This utility model relates to the field of grease resistivity measurement technology, specifically a grease resistivity measuring device. Background Technology

[0002] Grease is a thick, oily, semi-solid used in the friction parts of machinery for lubrication and sealing. It is also used on metal surfaces to fill gaps and prevent rust. It is mainly composed of mineral oil (or synthetic lubricating oil) and thickeners. When the "shaft voltage" exceeds the breakdown threshold of the grease film in the bearing, a discharge phenomenon occurs between the inner ring, rolling elements, and outer ring of the bearing, known as "bearing current." This bearing current generates electric sparks on the surface of the rolling elements and raceways, causing localized high temperatures and forming ablation pits. Therefore, a suitable resistivity helps ensure the stable operation of electrical equipment, thus requiring the use of resistivity measuring devices.

[0003] For example, the utility model application with application number CN202220427027.9 discloses a grease resistivity measuring device. Similar to the grease resistivity measuring device mentioned above, there are still some shortcomings: In the process of measuring the grease resistivity, it is necessary to manually apply the grease repeatedly to promote the compaction of the grease, which is a rather troublesome process.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a grease resistivity measuring device. Utility Model Content

[0005] The purpose of this invention is to provide a grease resistivity measuring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grease resistivity measuring device, comprising a base, a leveling and filling component, and a receiving component. A protective shell is installed on top of the base, and a conductive plate is fixed inside the protective shell. An insulating outer ring is fixed on the upper outer side of the conductive plate, and an insulating inner ring is provided on the upper inner side of the conductive plate. The receiving component is located in the middle of the insulating inner ring. A leveling and filling component is located on the upper left side of the insulating outer ring, and the leveling and filling component includes a slot, a locking block, a rotating shaft, a rotating rod, and a transparent component. The device comprises a top cover, a threaded cylinder, a threaded rod, a micro motor, a flat scraper, and a feed chute. A locking block is engaged inside the locking slot, and a rotating rod is rotatably connected above the locking block via a rotating shaft. A transparent top cover is fixed to the end of the rotating rod, and a threaded cylinder is fixed above the transparent top cover via a support rod. A threaded rod is screwed into the inside of the threaded cylinder, and a micro motor is connected to the bottom of the threaded rod. A flat scraper is located outside the output shaft below the micro motor. The micro motor and the flat scraper are located inside the transparent top cover, and a feed chute is provided on one side of the transparent top cover.

[0007] Furthermore, the accommodating component includes an installation cavity, an accommodating box, inserts, and grooves. The accommodating box is installed inside the installation cavity, and inserts are fixed on both sides of the outer side of the accommodating box. Grooves are provided on both sides of the installation cavity corresponding to the inserts.

[0008] Furthermore, the centerline of the threaded cylinder coincides with the centerline of the transparent top cover, and the inner diameter of the transparent top cover is the same as that of the accommodating box.

[0009] Furthermore, a pressure plate is rotatably mounted on the upper side of the insulating outer ring via a movable shaft, and the pressure plate is located on the upper side of the groove.

[0010] Furthermore, a side plate is fixed to the rear of the base, and an electric telescopic rod is installed on the lower middle part of the side plate, with a measuring electrode installed below the electric telescopic rod.

[0011] Furthermore, a megohmmeter is installed on the upper side of the side plate, and the megohmmeter is electrically connected to the conductive plate and the measuring electrode through two wires respectively.

[0012] Furthermore, a backing plate is connected to one side of the measuring electrode via a connecting rod, and the lower side of the backing plate is on the same horizontal plane as the lower side of the measuring electrode. A limiting groove is provided on the upper right side of the insulating outer ring to the backing plate, and the backing plate is made of insulating material.

[0013] This invention provides a device for measuring the resistivity of lubricating grease, which has the following advantages:

[0014] This utility model is equipped with a leveling and filling component. The locking block and the locking groove are interlocked to facilitate the removal and cleaning of the transparent top cover. In use, the transparent top cover is rotated to the top of the container, and the grease to be tested is squeezed into the interior of the container through the feeding groove. The micro motor drives the leveling scraper to rotate. In use, the height of the micro motor and the leveling scraper can also be adjusted by rotating the threaded rod in the threaded cylinder. When the micro motor moves to the uppermost side, the lower side of the leveling scraper is flush with the surface of the container, so that the leveling scraper can level the grease inside the container layer by layer to promote the compaction of the grease and avoid the trouble of repeated manual application and leveling.

[0015] This utility model is equipped with a receiving component. The inner insulating ring can be placed inside the outer insulating ring, and the receiving box can be placed in the mounting cavity, so that the insert and the groove can be fitted together, thereby realizing the assembly and disassembly of the receiving box. The movable shaft facilitates the rotation of the pressure plate, so that the pressure plate can be located on the upper side of the insert and the inner insulating ring, thereby pressing the receiving box and the inner insulating ring tightly, making them less prone to loosening after installation. This installation method facilitates the removal and cleaning of the receiving box and the inner insulating ring. The electric telescopic rod facilitates the raising and lowering of the measuring electrode, and then the megohmmeter can measure the resistivity of the lubricating grease. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a grease resistivity measuring device according to the present invention;

[0017] Figure 2 This is a half-sectional structural diagram of a grease resistivity measuring device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the flat filling component structure of a grease resistivity measuring device according to the present invention;

[0019] Figure 4 This is a schematic diagram of the accommodating component of a grease resistivity measuring device according to the present invention;

[0020] Figure 5 This is a schematic diagram of the measuring electrode detection structure of a grease resistivity measuring device according to the present invention.

[0021] In the diagram: 1. Base; 2. Protective shell; 3. Conductive plate; 4. Insulating outer ring; 5. Flat filling component; 501. Slot; 502. Block; 503. Rotating shaft; 504. Rotating rod; 505. Transparent top cover; 506. Threaded cylinder; 507. Threaded rod; 508. Micro motor; 509. Flat scraper; 510. Feed chute; 6. Insulating inner ring; 7. Receiving component; 701. Mounting cavity; 702. Receiving box; 703. Insert; 704. Slot; 8. Movable shaft; 9. Pressure plate; 10. Side plate; 11. Electric telescopic rod; 12. Measuring electrode; 13. Megohmmeter; 14. Support plate; 15. Limiting slot. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, a grease resistivity measuring device includes a base 1, a leveling and filling component 5, and a receiving component 7. A protective shell 2 is installed on top of the base 1, and a conductive plate 3 is fixed inside the protective shell 2. An insulating outer ring 4 is fixed on the outer side of the upper part of the conductive plate 3, and an insulating inner ring 6 is provided on the inner side of the upper part of the conductive plate 3. The receiving component 7 is provided in the middle of the insulating inner ring 6. The receiving component 7 includes a mounting cavity 701, a receiving box 702, inserts 703, and grooves 704. The receiving box 702 is installed inside the mounting cavity 701, and inserts 703 are fixed on both sides of the outer part of the receiving box 702. The two sides of the mounting cavity 701 correspond to the inserts 703. 3. A groove 704 is provided. A pressure plate 9 is rotatably mounted on the upper side of the insulating outer ring 4 via a movable shaft 8, and the pressure plate 9 is located on the upper side of the groove 704. The insulating inner ring 6 can be placed inside the insulating outer ring 4, and the accommodating box 702 can be placed in the mounting cavity 701, so that the insert 703 and the groove 704 fit together, thereby realizing the assembly and disassembly of the accommodating box 702. The movable shaft 8 facilitates the rotation of the pressure plate 9, so that the pressure plate 9 can be located on the upper side of the insert 703 and the insulating inner ring 6, thereby pressing the accommodating box 702 and the insulating inner ring 6 tightly, so that the two are not easy to loosen after installation. This installation method facilitates the removal and cleaning of the accommodating box 702 and the insulating inner ring 6.

[0024] like Figure 2 and Figure 3As shown, a leveling and compacting component 5 is provided on the upper left side of the insulating outer ring 4. The leveling and compacting component 5 includes a slot 501, a block 502, a rotating shaft 503, a rotating rod 504, a transparent top cover 505, a threaded cylinder 506, a threaded rod 507, a micro motor 508, a leveling scraper 509, and a feed chute 510. The block 502 is engaged inside the slot 501, and the rotating rod 504 is rotatably connected above the block 502 via the rotating shaft 503. A transparent top cover 505 is fixed at the end of the rotating rod 504. A top cover 505 is provided, and a threaded cylinder 506 is fixed above the transparent top cover 505 by a support rod. A threaded rod 507 is screwed into the inside of the threaded cylinder 506. A micro motor 508 is connected to the bottom of the threaded rod 507, and a flat scraper 509 is provided on the outside of the output shaft below the micro motor 508. The micro motor 508 and the flat scraper 509 are located inside the transparent top cover 505, and a feed chute 510 is provided on one side of the transparent top cover 505. The center line of the threaded cylinder 506 is aligned with the center line of the transparent top cover 505. The center lines of the 05 coincide, and the inner diameter of the transparent top cover 505 is the same as that of the receiving box 702; the locking block 502 and the locking groove 501 are designed to facilitate the removal and cleaning of the transparent top cover 505. In use, the transparent top cover 505 is rotated to the top of the receiving box 702, and the grease to be tested is squeezed into the interior of the receiving box 702 through the feed groove 510. The micro motor 508 drives the rotation of the flat scraper 509. In use, the threaded rod 507 in the threaded cylinder 506 can also be rotated. Adjust the height of the micro motor 508 and the flat scraper 509. When the micro motor 508 moves to the uppermost position, the lower side of the flat scraper 509 is flush with the surface of the container 702. This allows the flat scraper 509 to flatten the grease inside the container 702 layer by layer, which helps to compact the grease and avoids the hassle of repeated manual application. Conversely, during measurement, the transparent top cover 505 can be rotated to the other side via the rotating shaft 503 and the rotating rod 504 without obstructing the use of the measuring electrode 12.

[0025] like Figure 1 and Figure 5As shown, a side plate 10 is fixed to the rear of the base 1, and an electric telescopic rod 11 is installed on the lower middle part of the side plate 10. A measuring electrode 12 is installed below the electric telescopic rod 11. A megohmmeter 13 is installed on the upper side of the side plate 10, and the megohmmeter 13 is electrically connected to the conductive plate 3 and the measuring electrode 12 respectively through two wires. A support plate 14 is connected to one side of the measuring electrode 12 through a connecting rod, and the lower side of the support plate 14 is at the same level as the lower side of the measuring electrode 12. A limit groove 15 is provided on the upper right side of the insulating outer ring 4 to the support plate 14, and the support plate 14 is made of insulating material; the electric telescopic rod 11 facilitates the raising and lowering of the measuring electrode 12 so that it fits against the upper side of the lubricating grease inside the container 702. The abutment 14 rises and falls synchronously with the measuring electrode 12. When it descends to its final position, the abutment 14 is located in the limiting groove 15 with an appropriate depth, allowing the measuring electrode 12 to move down appropriately to ensure full contact with the lubricating grease inside the container 702. The bottom surface of the container 702 is a conductive structure that can make close contact with the conductive plate 3. When the megohmmeter 13 is turned on, the measuring current forms a resistance measuring circuit through the measuring electrode 12, the lubricating grease, the conductive bottom surface of the container 702, and the conductive plate 3, thus allowing the resistivity of the lubricating grease to be measured.

[0026] In summary, as Figures 1-5 As shown, in use, the grease resistivity measuring device first places the inner insulating ring 6 inside the outer insulating ring 4, then places the housing 702 into the mounting cavity 701, so that the insert 703 and the groove 704 fit together, thus assembling and disassembling the housing 702. Then, the movable shaft 8 facilitates the rotation of the pressure plate 9, allowing the pressure plate 9 to be positioned above the insert 703 and the inner insulating ring 6, thereby pressing the housing 702 and the inner insulating ring 6 firmly, making them less prone to loosening after installation. During use, the transparent top cover 505 is rotated to the correct position of the housing 702. The grease to be tested is squeezed into the interior of the container 702 through the feed chute 510. Then, the micro motor 508 drives the flat scraper 509 to rotate. During this process, the height of the micro motor 508 and the flat scraper 509 can be adjusted by rotating the threaded rod 507 in the threaded cylinder 506. When the micro motor 508 moves to the uppermost side, the lower side of the flat scraper 509 is flush with the surface of the container 702, so that the flat scraper 509 can flatten the grease inside the container 702 layer by layer to promote the compaction of the grease.

[0027] Then, the transparent top cover 505 is rotated to the other side via the rotating shaft 503 and the rotating rod 504 so as not to obstruct the use of the measuring electrode 12. Then, the measuring electrode 12 is raised and lowered by the electric telescopic rod 11 so that it is in contact with the upper side of the lubricating grease inside the container 702. At this time, the abutment plate 14 rises and falls synchronously with the measuring electrode 12. When it descends to the end, the abutment plate 14 is located in the limiting groove 15 with an appropriate depth, so that the measuring electrode 12 moves down appropriately to ensure that it is in full contact with the lubricating grease inside the container 702. The bottom surface of the container 702 is a conductive structure that can be in close contact with the conductive plate 3. Turn on the megohmmeter 13. The switch measures the current through the measuring electrode 12, the grease, the conductive bottom surface of the housing 702, and the conductive plate 3 to form a resistance measurement circuit. All parts are connected in series. Under normal circumstances, the resistance value of the parts other than the grease can be ignored. The result measured by the megohmmeter 13 can be regarded as the resistance value R of the grease. At the same time, the diameter D and thickness L of the grease are known. The cross-sectional area of ​​the grease can be calculated from the diameter, i.e., S=π(D / 2)2. According to the formula for calculating resistivity ρ=R*S / L, the resistivity of the grease can be calculated. This completes the process of using the grease resistivity measuring device.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A grease resistivity measuring device, comprising a base (1), a leveling and compacting component (5), and a receiving component (7), characterized in that, A protective shell (2) is installed above the base (1), and a conductive plate (3) is fixed inside the protective shell (2). An insulating outer ring (4) is fixed on the upper outer side of the conductive plate (3), and an insulating inner ring (6) is provided on the upper inner side of the conductive plate (3). A receiving component (7) is provided in the middle of the insulating inner ring (6). A leveling and filling component (5) is provided on the upper left side of the insulating outer ring (4). The leveling and filling component (5) includes a slot (501), a block (502), a rotating shaft (503), a rotating rod (504), a transparent top cover (505), a threaded cylinder (506), a threaded rod (507), a micro motor (508), a leveling scraper (509), and a feeding groove (510). The slot (501) 1) An internal locking block (502) is attached, and a rotating rod (504) is rotatably connected above the locking block (502) via a rotating shaft (503). A transparent top cover (505) is fixed to the end of the rotating rod (504), and a threaded cylinder (506) is fixed above the transparent top cover (505) via a support rod. A threaded rod (507) is screwed into the inside of the threaded cylinder (506), and a micro motor (508) is connected to the bottom of the threaded rod (507). A flat scraper (509) is provided on the outside of the output shaft below the micro motor (508). The micro motor (508) and the flat scraper (509) are located inside the transparent top cover (505), and a feed chute (510) is provided on one side of the transparent top cover (505).

2. The grease resistivity measuring device according to claim 1, characterized in that, The accommodating component (7) includes an installation cavity (701), an accommodating box (702), an insert (703), and a groove (704). The accommodating box (702) is installed inside the installation cavity (701), and the insert (703) is fixed on both sides of the outer side of the accommodating box (702). The groove (704) is provided on both sides of the installation cavity (701) corresponding to the insert (703).

3. The lubricating grease resistivity measuring device according to claim 2, characterized in that, The centerline of the threaded cylinder (506) coincides with the centerline of the transparent top cover (505), and the inner diameter of the transparent top cover (505) is the same as that of the accommodating box (702).

4. The grease resistivity measuring device according to claim 2, characterized in that, A pressure plate (9) is rotatably mounted on the upper side of the insulating outer ring (4) via a movable shaft (8), and the pressure plate (9) is located on the upper side of the groove (704).

5. The lubricating grease resistivity measuring device according to claim 1, characterized in that, A side plate (10) is fixed to the rear of the base (1), and an electric telescopic rod (11) is installed on the lower middle part of the side plate (10), and a measuring electrode (12) is installed below the electric telescopic rod (11).

6. The grease resistivity measuring device according to claim 5, characterized in that, A megohmmeter (13) is installed on the upper side of the side plate (10), and the megohmmeter (13) is electrically connected to the conductive plate (3) and the measuring electrode (12) through two wires respectively.

7. The grease resistivity measuring device according to claim 5, characterized in that, One side of the measuring electrode (12) is connected to a backing plate (14) via a connecting rod, and the lower side of the backing plate (14) is on the same horizontal plane as the lower side of the measuring electrode (12). A limiting groove (15) is provided on the upper right side of the insulating outer ring (4) to the backing plate (14), and the backing plate (14) is made of insulating material.

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