Bearing electrocorrosion testing device

Abstract

The invention discloses a bearing electrocorrosion testing device which comprises a base and a bearing mounting platform, a front end cover and a rear end cover are arranged at the two ends of the bearing mounting platform respectively, and the bearing mounting platform comprises a rotating shaft; a rear auxiliary plate is arranged on the rear end cover, a second assembling groove is formed in the rear end cover, second fastening bolts are arranged in the second assembling groove and a third assembling groove, a second mounting groove and a third mounting groove are formed in the rear auxiliary plate, an opening is formed in the side wall of the third mounting groove, a fourth mounting groove is formed in one side of the third mounting groove, and a carbon brush is arranged in the fourth mounting groove; the second fastening bolt is provided with an assembling hole, the rear auxiliary plate is provided with a positioning column, the front end of the positioning column is provided with an assembling part, the carbon brush is connected into one pole of a bearing electrocorrosion testing loop, and one group of wires at the rear end of the conducting rod are connected into the other pole of the bearing electrocorrosion testing loop. The vibration of the bearing electrocorrosion testing device is reduced, and the risk of poor contact between the wire and the bearing mounting platform shell and between the electric brush and the rotating shaft is reduced.

Description

Technical Field

[0001] This invention relates to the field of bearing electrocorrosion testing devices, and more specifically to a bearing electrocorrosion testing device. Background Technology

[0002] Currently, a shaft voltage typically exists between the motor bearing and the shaft. When the shaft voltage is high, it causes the lubricating oil film to discharge and break down, forming a circuit and generating shaft current. The high temperature generated by the partial discharge energy can melt many tiny areas on the inner ring, outer ring, or balls of the bearing, forming grooves and causing abnormal phenomena such as noise and vibration. Bearing electro-corrosion is one of the main causes of motor bearing damage. To detect bearing quality, it is necessary to use a bearing electro-corrosion test circuit to detect the current value and voltage passing through the bearing.

[0003] In existing bearing electrocorrosion testing devices, a servo motor drives the spindle and the bearing under test to rotate via an insulated flexible coupling, simulating the actual operating conditions of the bearing. One test lead is externally connected to the surface of the bearing mounting platform, while the other is connected to a vertically arranged brush independent of the bearing mounting platform, with the brush making lateral contact with the shaft. The asynchronous lateral vibration of the bearing electrocorrosion testing device and the brush leads to significant contact problems between the lead and the surface of the bearing mounting platform (the vibration of the device itself pulls on the connection between the lead and the platform), and between the brush and the shaft. This significantly affects the detection of the current and voltage passing through the bearing, resulting in large fluctuations in the test data. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a bearing electrocorrosion testing device. This device solves the shortcomings of existing bearing electrocorrosion testing devices, where vibration itself causes poor contact between the wires and the bearing mounting platform surface, and between the brushes and the shaft, significantly affecting the detection of the current and voltage passing through the bearing, resulting in large fluctuations in the test data.

[0005] The technical solution adopted in this invention is as follows: A bearing electro-corrosion testing device includes: a base, on which a bearing mounting platform is provided, a front end cover and a rear end cover are respectively provided at both ends of the bearing mounting platform, and the bearing mounting platform includes a rotating shaft; a rear auxiliary plate is provided on the rear end cover, and a second assembly groove is provided on the rear end cover; a third assembly groove corresponding to the second assembly groove is provided on the bearing mounting platform, and a second fastening bolt is installed in both the second and third assembly grooves; the rear auxiliary plate is provided with a second mounting groove and a third mounting groove for easy insertion of the rotating shaft; an opening is provided on the side wall of the third mounting groove; a fourth mounting groove is provided on one side of the third mounting groove, and a carbon brush is installed in the fourth mounting groove; The second fastening bolt has an assembly hole, and a positioning post is mounted on the rear auxiliary plate. The front end of the positioning post has an assembly part that matches the assembly hole. The positioning post has a through hole, and a conductive rod is installed in the through hole. The bottom of the second assembly groove has an insertion hole for inserting the conductive rod. The carbon brush is connected to one pole of the bearing electro-corrosion test circuit through a wire. The rear end of the conductive rod is connected to multiple sets of wires, one set of which is connected to the other pole of the bearing electro-corrosion test circuit. The end face of the insertion hole has a wiring connection to the surface of the bearing mounting platform.

[0006] This invention uses a rear auxiliary plate to fix the carbon brush and a positioning post to fix the rear auxiliary plate and the bearing mounting platform. The rear auxiliary plate shifts the center of gravity of the bearing mounting platform outward, reducing the vibration of the bearing mounting platform (including lateral and longitudinal vibration or movement). At the same time, the wires are directly fixed in the positioning post, and the connection between the positioning post and the wiring is located on the bearing mounting platform, so that the brush and the positioning post are fixed synchronously. This avoids the lateral vibration of the bearing electrocorrosion testing device itself being asynchronous with the lateral vibration of the brush, reducing the impact on the bearing current value and voltage detection results, and reducing the fluctuation range of the detection data.

[0007] Optionally, the end face of the rotating shaft extending from the front end cover is provided with a first mounting groove, the first mounting groove is provided with a connecting shaft, the connecting shaft is connected to a servo motor through a coupling; the front end of the first mounting groove is provided with a slot, the connecting shaft is equipped with an assembly block, and the front end of the connecting shaft is provided with a fastening ring.

[0008] Optionally, the bearing mounting platform adopts a metal housing, with a protrusion in the middle of the rotating shaft, bearings installed at both ends of the protrusion, and limiting rings for fixing the bearings provided on the rear end face of the front end cover and the front end face of the rear end cover.

[0009] Optionally, the front end cover is provided with a first assembly groove, and a first fastening bolt is installed in the first assembly groove and the third assembly groove. The housing is provided with a fourth assembly groove that corresponds one-to-one with the first assembly groove.

[0010] Optionally, the positioning post has a first conductive ring at its rear end, the positioning post is inserted into the second mounting groove, the second mounting groove is equipped with a second conductive ring, when the positioning post is assembled in place, the conductive rod is inserted into the insertion hole, and the first conductive ring abuts against the second conductive ring, and the fourth mounting groove is equipped with a lifting platform for placing carbon brushes.

[0011] Optionally, the bottom of the lifting platform is provided with a lifting mechanism for driving the lifting platform to rise and fall. A side baffle is installed on the side wall of the fourth mounting slot located on one side of the lifting platform. The top of the side baffle is provided with an inwardly inclined elastic arc surface. A sliding groove is provided inside the side baffle. The elastic arc surface is connected to the side wall of the sliding groove through a stretchable flexible material. A driving component is installed in the sliding groove. The bottom of the driving component is connected to the lifting platform through a vertical rod. The bottom of the vertical rod is connected to the lifting platform through a horizontal rod. A sliding groove is provided on the lower surface of the side baffle. The horizontal rod is inserted into the sliding groove. Multiple electromagnetic mechanisms are arranged in an array on the driving component.

[0012] Optionally, electromagnetic mechanisms in the same row are connected in series and have outwardly protruding sliding contact heads at both ends. Resistor plates are provided on both sides of the slide groove. The sliding contact head is used to provide resistance to the movement of the driving component and to continuously contact the resistor plates during movement. A telescopic cylinder is provided on the outside of the electromagnetic mechanism. The telescopic cylinder includes an inner cylinder fixed to the electromagnetic mechanism and an outer cylinder that is slidable on the inner cylinder. A first permanent magnet is provided at the end of the outer cylinder. The electromagnetic mechanism is used to generate a magnetic field to repel the first permanent magnet. The first permanent magnet is connected to the outer surface of the electromagnetic mechanism by a spring.

[0013] Optionally, the top of the resistor is connected to the two poles of an external power supply or to a bearing electrocorrosion test circuit.

[0014] Optionally, the lifting mechanism is a lifting motor.

[0015] Optionally, the bottom of the lifting platform is provided with a second permanent magnet, and the lifting mechanism is an electromagnetic component. The electromagnetic component generates a magnetic field when energized to repel the second permanent magnet. The bottom of the second permanent magnet is provided with an elastic element. The top of the elastic element is connected to the second permanent magnet, and the bottom of the elastic element is connected to the bottom surface of the fourth assembly groove. The elastic element is used to provide a rebound force that causes the second permanent magnet to move downward. The electromagnetic component is connected to the bearing electrocorrosion test circuit.

[0016] The beneficial effects of the present invention include at least the following: 1. This invention uses a rear auxiliary plate to fix the carbon brush and a positioning post to fix the rear auxiliary plate and the bearing mounting platform. The rear auxiliary plate shifts the center of gravity of the bearing mounting platform outward, reducing the vibration of the bearing mounting platform. At the same time, the wire is directly fixed in the positioning post. The connection between the positioning post and the wire is set on the bearing mounting platform, so that the brush and the positioning post are fixed synchronously. This avoids the asynchronous lateral vibration of the bearing electrocorrosion testing device itself and the lateral vibration of the brush, reduces the impact on the bearing current value and voltage detection results, and reduces the fluctuation range of the detection data.

[0017] 2. In this invention, the positioning post is inserted into the through hole, and the end of the conductive rod contacts the L-shaped wiring. The lifting motor raises the lifting platform, pushing the brush upward and causing it to be pressed against the rotating shaft by the elastic arc surface. At the same time, the lifting platform pushes the driving component upward along the sliding groove. The electromagnetic mechanism generates a magnetic field that repels the first permanent magnet, causing the outer cylinder to move outward and pushing the elastic arc surface to press the brush into close contact with the rotating shaft.

[0018] 3. Only when the first fastening bolt and positioning post of the present invention are properly assembled can testing be carried out, and only then will the bearing electro-corrosion test circuit generate a normal current value, which helps the operator check whether the installation is accurate.

[0019] 4. The electromagnetic component of this invention generates a magnetic field when energized to repel the second permanent magnet, thereby raising the lifting platform and pushing the brush upwards, where it is pressed against the rotating shaft by the elastic arc surface. The electromagnetic mechanism generates a magnetic field that repels the first permanent magnet, causing the outer cylinder to move outwards, pushing the elastic arc surface to press the brush into close contact with the rotating shaft. The elastic element and the electromagnetic component form a dynamic balance for the lifting platform, reducing the vertical vibration of the brush and the risk of the brush moving away from the rotating shaft (because the brush will move downwards and escape the pressure of the elastic arc surface, and will also escape from the rotating shaft due to the influence of lateral vibration). At the same time, the lifting platform pushes the drive component to move upwards along the sliding groove. The greater the upward stroke of the drive component, the smaller the resistance of the electromagnetic component connected to the bearing electro-corrosion test circuit. Under the same voltage, the larger the current passed through the electromagnetic component, the stronger the magnetic field generated, and the stronger the repulsive force on the second permanent magnet. Since the elastic arc surface has more deformation redundancy at the top and less deformation redundancy at the bottom, the greater the stroke of the outer cylinder, the more closely the elastic arc surface is pressed against the brush, thus making the brush more tightly contact the rotating shaft. Attached Figure Description

[0020] Figure 1 This is an internal structural diagram of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 2 This is a perspective view of the positioning column of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 3 This is a perspective view of the first fastening bolt of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 4 This is an internal structural diagram of the second fastening bolt of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 5 This is a bearing electro-corrosion testing circuit diagram of the bearing electro-corrosion testing device according to Embodiment 1 of the present invention; Figure 6 This is an internal structural diagram of the rear auxiliary plate of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 7 This is the bearing electrocorrosion testing device of Embodiment 1 of the present invention. Figure 6 Enlarged view of part A; Figure 8 This is an assembly structure diagram of the side baffle and lifting platform of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 9 This is a structural diagram of the internal structure of the side baffle of the bearing electro-corrosion testing device according to Embodiment 1 of the present invention; Figure 10 This is a perspective view of the side baffle and drive component of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 11 This is a perspective view of the telescopic cylinder of the bearing electrocorrosion testing device according to Embodiment 1 of the present invention; Figure 12 This is an assembly structure diagram of the side baffle and lifting platform of the bearing electrocorrosion testing device according to Embodiment 3 of the present invention.

[0021] The labels for the attached figures are as follows: 1. Rotating shaft, 2. First mounting slot, 3. Connecting shaft, 4. Rear auxiliary plate, 5. Second assembly slot, 6. Third assembly slot, 7. Second fastening bolt, 8. Third mounting slot, 9. Opening, 10. Fourth mounting slot, 11. Carbon brush, 12. Assembly hole, 13. Positioning post, 14. Assembly part, 15. Through hole, 16. Conductive rod, 17. Insertion hole, 18. First conductive ring, 19. Second conductive ring, 20. Wire, 21. Slot, 22. Fastening ring, 23. Housing, 24. Protrusion, 25. Limiting ring, 26. Wave-shaped gasket, 27. First assembly slot, 28. First fastening bolt, 29. 4. Assembly slot, 30. Rotating part, 31. Lifting platform, 32. Lifting mechanism, 33. Side baffle, 34. Elastic arc surface, 35. Sliding groove, 36. Driving component, 37. Vertical rod, 38. Electromagnetic mechanism, 39. Sliding contact head, 40. Resistance sheet, 41. Second permanent magnet, 42. Elastic component, 43. Sliding groove, 44. Assembly block, 45. Second mounting slot, 46. Wiring, 47. Telescopic cylinder, 48. Inner cylinder, 49. Outer cylinder, 50. First permanent magnet, 51. Spring, 52. Crossbar; 100. Base, 200. Bearing mounting platform, 300. Front cover, 400. Rear cover. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, the end connected to the servo motor is the front end, and the end located on the rear auxiliary board is the rear end.

[0025] Example 1 The technical solution adopted in this invention is as follows: like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this invention discloses a bearing electro-corrosion testing device, comprising: a base 100, a bearing mounting platform 200 on the base, a front end cover 300 and a rear end cover 400 at both ends of the bearing mounting platform, the bearing mounting platform including a rotating shaft 1 for mounting the bearing and a housing mounted outside the rotating shaft, a first mounting groove 2 on the end face of the rotating shaft extending out of the front end cover, a connecting shaft 3 in the first mounting groove, the connecting shaft being connected to a servo motor via a coupling, a rear auxiliary plate 4 on the rear end cover, a second assembly groove 5 on the rear end cover, a third assembly groove 6 corresponding to the second assembly groove on the housing, a second fastening bolt 7 in both the second and third assembly grooves, a second mounting groove 45 on the rear auxiliary plate and a third mounting groove 8 for easy insertion of the rotating shaft, an opening 9 on the side wall of the third mounting groove, a fourth mounting groove 10 on one side of the third mounting groove, a carbon brush 11 in the fourth mounting groove, the carbon brush being connected to one pole of the bearing electro-corrosion testing circuit via a wire.

[0026] like Figure 6 , Figure 7As shown, the second fastening bolt has an assembly hole 12, and a positioning post 13 is mounted on the rear auxiliary plate. The front end of the positioning post has an assembly part 14 that matches the assembly hole. The positioning post has a through hole 15, and a conductive rod 16 is installed in the through hole. The bottom of the second assembly groove has an insertion hole 17 for inserting the conductive rod. The rear end of the positioning post has a first conductive ring 18. The positioning post is inserted into the second mounting groove, and a second conductive ring 19 is installed in the second mounting groove. When the positioning post is assembled in place, the conductive rod is inserted into the insertion hole, and the first conductive ring abuts against the second conductive ring. The rear end of the conductive rod is connected to two sets of wires 20, one set of wires being connected to the other pole of the bearing electro-corrosion test circuit. The end face of the insertion hole has a wiring 46 connected to the surface of the housing. The wiring is L-shaped. The outer surfaces of the positioning post and the wiring are made of insulating material.

[0027] In this embodiment, the assembly hole is a threaded hole, and the assembly part adopts an external thread structure.

[0028] like Figure 5 As shown, the bearing electrochemical corrosion test circuit consists of a DC 12V power supply, a sliding resistor, an ammeter (A), a voltmeter (V), and a 20000μF capacitor. The 20000μF capacitor is used for filtering and energy storage, providing a stable DC voltage environment for the test circuit and reducing interference. The ammeter monitors the current flowing through the bearing under test; an abnormally high current usually indicates deterioration in the bearing's insulation performance. The voltmeter monitors the voltage in the test circuit, ensuring that the voltage applied to the bearing is stable. A servo motor torque drives the spindle and the bearing under test to rotate.

[0029] The coupling is an insulated flexible coupling. A slot 21 is provided at the front end of the first mounting groove, an assembly block 44 is mounted on the connecting shaft, and a fastening ring 22 is provided at the front end of the connecting shaft. The assembly block is used to be inserted into the slot.

[0030] The bearing mounting platform includes a metal housing 23, a protrusion 24 in the middle of the rotating shaft, and bearings installed at both ends of the protrusion. A limiting ring 25 for fixing the bearing is provided on the rear end face of the front end cover and the front end face of the rear end cover. A wave-shaped gasket 26 is provided between the limiting ring and the end face of the protrusion of the rotating shaft.

[0031] The front end cover is provided with a first assembly groove 27, and a first fastening bolt 28 is installed in the first assembly groove and the third assembly groove. The housing is provided with a fourth assembly groove 29 corresponding to the first assembly groove. The end of the positioning post away from the assembly part is provided with a rotating part 30.

[0032] like Figure 8 , Figure 9 and Figure 10As shown, the fourth mounting slot is equipped with a lifting platform 31 for placing carbon brushes. The bottom of the lifting platform is provided with a lifting mechanism 32 for driving the lifting platform to rise and fall. A side baffle 33 is installed on the side wall of the fourth mounting slot located on one side of the lifting platform. The top of the side baffle is provided with an inwardly inclined elastic arc surface 34. The side baffle is provided with a sliding groove 35. The elastic arc surface is connected to the side wall of the sliding groove through a stretchable flexible material. A driving component 36 is installed in the sliding groove. The bottom of the driving component is connected to the lifting platform through a vertical rod 37. The bottom of the vertical rod is connected to the lifting platform through a horizontal rod 52. The lower surface of the side baffle is provided with a sliding groove 43. The horizontal rod is inserted into the sliding groove. The driving component is provided with multiple electromagnetic mechanisms 38 arranged in an array. The electromagnetic mechanisms in the same row are connected in series and have outwardly protruding sliding contact heads 39 at both ends.

[0033] In this embodiment, two electromagnetic mechanisms connected in series are arranged in the same row.

[0034] like Figure 11 As shown, vertically arranged resistor plates 40 are provided on both side walls of the slide groove. The sliding contact head provides resistance to the movement of the driving component and continuously contacts the resistor plates during movement. The top of the resistor plates is connected to the two poles of an external power supply. A telescopic cylinder 47 is provided on the outside of the electromagnetic mechanism. The telescopic cylinder includes an inner cylinder 48 fixed to the electromagnetic mechanism and an outer cylinder 49 that slides on the inner cylinder. A first permanent magnet 50 is provided at the end of the outer cylinder. The electromagnetic mechanism generates a magnetic field that repels the first permanent magnet. A spring 51 is provided on the first permanent magnet to connect to the outer surface of the electromagnetic mechanism.

[0035] In this embodiment, the lifting mechanism is a lifting motor.

[0036] In this embodiment, after the system is powered on, the PLC (Programmable Logic Controller) issues a command to start the servo motor controller, driving the servo motor to operate. The servo motor drives the spindle and the bearing under test to rotate through an insulated flexible coupling, simulating the actual operating conditions of the bearing. A DC 12V power supply applies voltage to the rotating bearing through the test circuit, and ammeters and voltmeters monitor the changes in current and voltage in real time.

[0037] Open the front and rear covers, install the bearing into the bearing mounting platform, and then replace the front and rear covers. Install the first fastening bolt into the first and third assembly slots. Install the second fastening bolt into the second and third assembly slots. Secure the positioning pin to the bearing mounting platform and the rear auxiliary plate. Insert the positioning pin into the through hole. When the positioning pin is in place, the conductive rod is inserted into the insertion hole, with the first conductive ring abutting against the second conductive ring, and the end of the conductive rod contacting the L-shaped connector. Testing can only be performed when the first fastening bolt and positioning pin are in place. Only then will the bearing electro-corrosion test circuit generate a normal current value, helping the operator check the accuracy of the installation.

[0038] The lifting motor raises the lifting platform, pushing the brushes upward and causing them to be pressed against the rotating shaft by the elastic arc surface. At the same time, the lifting platform pushes the drive component upward along the sliding groove. The electromagnetic mechanism generates a magnetic field that repels the first permanent magnet, causing the outer cylinder to move outward and push the elastic arc surface to press the brushes into close contact with the rotating shaft.

[0039] Example 2 The difference between Example 2 and Example 1 is that the top of the resistor is connected in parallel to the bearing electro-corrosion test circuit, so that the electromagnetic mechanism is connected in parallel to the bearing electro-corrosion test circuit, specifically in parallel across the two ends of the DC 12V power supply.

[0040] Example 3 The difference between Example 3 and Example 1 is that, as Figure 12 As shown, a second permanent magnet 41 is provided at the bottom of the lifting platform. The lifting mechanism is an electromagnetic component. When energized, the electromagnetic component generates a magnetic field to repel the second permanent magnet. An elastic element 42 is provided at the bottom of the second permanent magnet. The top of the elastic element is connected to the second permanent magnet, and the bottom of the elastic element is connected to the bottom surface of the fourth assembly slot. The elastic element provides a restoring force to make the second permanent magnet move downward. The electromagnetic component is connected in parallel to an external power source. The elastic element is a spring.

[0041] In this embodiment, the electromagnetic component is energized to generate a magnetic field to repel the second permanent magnet, thereby raising the lifting platform, pushing the brush to move upward and being squeezed by the elastic arc surface to abut the rotating shaft.

[0042] The electromagnetic mechanism generates a magnetic field that repels the first permanent magnet, causing the outer cylinder to move outward and pushing the elastic arc surface to compress the brush into close contact with the rotating shaft. The elastic element and the electromagnetic assembly form a dynamic balance on the lifting platform, which reduces the vertical vibration of the brush and the risk of the brush moving away from the rotating shaft (because the brush will move downward and break free from the compression of the elastic arc surface, and will also break free from the rotating shaft due to the influence of lateral vibration). At the same time, the lifting platform pushes the drive component to move upward along the sliding groove. The greater the upward stroke of the drive component, the lower the resistance of the electromagnetic assembly connected to the bearing electro-corrosion test circuit. Under the same voltage, the larger the current flowing through the electromagnetic assembly, the stronger the magnetic field generated, and the stronger the repulsive force on the second permanent magnet. Since the elastic arc surface has more deformation redundancy at the top and less deformation redundancy at the bottom, the greater the stroke of the outer cylinder, the more closely the elastic arc surface is pushed into contact with the brush, thus making the brush more tightly contact the rotating shaft.

[0043] Example 4 The difference between Example 4 and Example 1 is that the electromagnetic component is connected in parallel to the bearing electro-corrosion test circuit, specifically in parallel across the two ends of the DC 12V power supply.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A bearing electrocorrosion testing device, comprising: a base, a bearing mounting platform provided on the base, and a front end cover and a rear end cover respectively provided at both ends of the bearing mounting platform, characterized in that... The bearing mounting platform includes a rotating shaft; a rear auxiliary plate is provided on the rear end cover, and a second assembly groove is provided on the rear end cover. A third assembly groove, corresponding to the second assembly groove, is provided on the bearing mounting platform. A second fastening bolt is installed in both the second and third assembly grooves. The rear auxiliary plate has a second mounting groove and a third mounting groove for easy shaft insertion. An opening is provided on the side wall of the third mounting groove, and a fourth mounting groove is provided on one side of the third mounting groove. A carbon brush is installed in the fourth mounting groove. The second fastening bolt is provided with an assembly hole, and a positioning post is mounted on the rear auxiliary plate. The front end of the positioning post is provided with an assembly part that matches the assembly hole. The positioning post is provided with a through hole, and a conductive rod is provided in the through hole. The bottom of the second assembly groove is provided with a socket for inserting the conductive rod. The carbon brush is connected to one pole of the bearing electro-corrosion test circuit through a wire. The rear end of the conductive rod is connected to multiple sets of wires, one set of wires is connected to the other pole of the bearing electro-corrosion test circuit, and the end face of the socket is provided with a wiring connection to the surface of the bearing mounting platform.

2. The bearing electrocorrosion testing device as described in claim 1, characterized in that... The rotating shaft end face extending from the front end cover is provided with a first mounting groove, the first mounting groove is provided with a connecting shaft, the connecting shaft is connected to the servo motor through a coupling; the front end of the first mounting groove is provided with a slot, the connecting shaft is equipped with an assembly block, and the front end of the connecting shaft is provided with a fastening ring.

3. The bearing electrocorrosion testing device as described in claim 1, characterized in that... The bearing mounting platform is made of metal housing, with a protrusion in the middle of the shaft. Bearings are installed at both ends of the protrusion. Limiting rings for fixing the bearings are provided on the rear end face of the front end cover and the front end face of the rear end cover.

4. A bearing electro-corrosion testing device as described in claim 1, 2, or 3, characterized in that... The front end cover is provided with a first assembly groove, and a first fastening bolt is installed in the first assembly groove and the third assembly groove. The housing is provided with a fourth assembly groove that corresponds one-to-one with the first assembly groove.

5. The bearing electro-corrosion testing device as described in claim 4, characterized in that... The positioning post has a first conductive ring at its rear end. The positioning post is inserted into the second mounting groove, and the second mounting groove contains the second conductive ring. When the positioning post is assembled in place, the conductive rod is inserted into the insertion hole, and the first conductive ring abuts against the second conductive ring. The fourth mounting groove contains a lifting platform for placing carbon brushes.

6. The bearing electro-corrosion testing device as described in claim 5, characterized in that... The bottom of the lifting platform is provided with a lifting mechanism for driving the lifting platform to rise and fall. A side baffle is installed on the side wall of the fourth mounting slot located on one side of the lifting platform. The top of the side baffle is provided with an inwardly inclined elastic arc surface. A sliding groove is provided inside the side baffle. The elastic arc surface is connected to the side wall of the sliding groove through a stretchable flexible material. A driving component is installed in the sliding groove. The bottom of the driving component is connected to the lifting platform through a vertical rod. The bottom of the vertical rod is connected to the lifting platform through a horizontal rod. A sliding groove is provided on the lower surface of the side baffle. The horizontal rod is inserted into the sliding groove. Multiple electromagnetic mechanisms are arranged in an array on the driving component.

7. The bearing electro-corrosion testing device as described in claim 6, characterized in that... The electromagnetic mechanisms in the same row are connected in series and have outwardly protruding sliding contact heads at both ends. The two side walls of the slide groove are provided with resistive plates. The sliding contact heads are used to provide resistance to the movement of the driving component and to continuously contact the resistive plates during movement. A telescopic cylinder is provided on the outside of the electromagnetic mechanism. The telescopic cylinder includes an inner cylinder fixed to the electromagnetic mechanism and an outer cylinder that is slidable on the inner cylinder. A first permanent magnet is provided at the end of the outer cylinder. The electromagnetic mechanism is used to generate a magnetic field to repel the first permanent magnet. The first permanent magnet is connected to the outer surface of the electromagnetic mechanism by a spring.

8. The bearing electro-corrosion testing device as described in claim 7, characterized in that... The top of the resistor is connected to the two poles of an external power supply or to the bearing electro-corrosion test circuit.

9. A bearing electro-corrosion testing device as described in claim 7, characterized in that... The lifting mechanism is a lifting motor.

10. A bearing electro-corrosion testing device as described in claim 7, characterized in that... The bottom of the lifting platform is provided with a second permanent magnet. The lifting mechanism is an electromagnetic component. When the electromagnetic component is energized, it generates a magnetic field to repel the second permanent magnet. The bottom of the second permanent magnet is provided with an elastic element. The top of the elastic element is connected to the second permanent magnet, and the bottom of the elastic element is connected to the bottom surface of the fourth assembly groove. The elastic element is used to provide a rebound force that causes the second permanent magnet to move downward. The electromagnetic component is connected to the bearing electrocorrosion test circuit.

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