CN212459263U - Carbon brush abrasion life test equipment and experiment table - Google Patents
Carbon brush abrasion life test equipment and experiment table Download PDFInfo
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- CN212459263U CN212459263U CN202020797966.3U CN202020797966U CN212459263U CN 212459263 U CN212459263 U CN 212459263U CN 202020797966 U CN202020797966 U CN 202020797966U CN 212459263 U CN212459263 U CN 212459263U
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- transmission shaft
- carbon brush
- conductive module
- friction part
- collecting ring
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Abstract
The utility model discloses a carbon brush wearing and tearing life-span test equipment and laboratory bench relates to the carbon brush test field, including transmission shaft and axle head testing arrangement, the transmission shaft passes through drive arrangement and rotates, the axle head testing arrangement be at least one and with the tip one-to-one of transmission shaft, the axle head testing arrangement includes friction part, first earthing device, collecting ring and conductive module, the friction part is connected with the tip of transmission shaft, first earthing device sets up with the friction part relatively, the first carbon brush that awaits measuring is fixed and with the friction part butt through first earthing device; the collecting ring is sleeved on the transmission shaft and connected with the friction part, and the collecting ring is connected with the conductive module; the conductive module is electrically connected with the first grounding device and forms a loop with the current generator; further comprising: and the insulating sleeve isolates the collecting ring from the transmission shaft. The technical effects of the utility model reside in that: the abrasion degree of the carbon brushes of a plurality of brands can be detected simultaneously in the axial direction and the radial direction, and the service life of the transmission shaft is prolonged.
Description
Technical Field
The utility model relates to a carbon brush test field especially relates to a carbon brush wearing and tearing life-span test equipment and laboratory bench.
Background
The grounding device is one of the parts of the locomotive and is a key part for rail transportation, and the quality inspection of the grounding device is important for guaranteeing the safety of railway transportation.
In the prior art, the grounding device tests the abrasion life of the carbon brush according to a standard specified test method of JBT 8155 and 2001, test method of running performance of electric brush for motor. At present, the existing carbon brush abrasion test bed of the grounding device usually uses a transmission shaft to carry out electrification abrasion detection on a shaft end grounding device and a gear box grounding device, the actually applied grounding device and the carbon brush are selected during detection, the power is supplied according to rated current, the equipment runs at the application rated rotating speed, and after the equipment runs for a period of time (300h or 500h), the abrasion length of the carbon brush is measured, so that the service kilometer life number of the abrasion of the carbon brush is calculated, a powerful reference is provided for the selection of the grade number of the grounding carbon brush, and a basis is provided for the maintenance mileage of the grounding carbon brush. However, the current during electrification can pass through the transmission shaft, so that a large amount of electric heating of the bearing is caused, the experimental data can be influenced, the service life of the transmission shaft can be shortened, and the experimental result is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that causes electricity to generate heat when avoiding the electric current to pass through the transmission shaft.
In order to achieve the above object, the utility model provides a carbon brush wearing and tearing life-span test equipment, its characterized in that, including transmission shaft and axle head testing arrangement, the transmission shaft passes through drive arrangement and rotates, axle head testing arrangement be at least one and with the tip one-to-one of transmission shaft, axle head testing arrangement includes friction part, first earthing device, collecting ring and conductive module, friction part with the tip of transmission shaft is connected, first earthing device with the friction part sets up relatively, first carbon brush that awaits measuring is fixed and with the butt of friction part through first earthing device; the collecting ring is sleeved on the transmission shaft and connected with the friction part, and the collecting ring is connected with the conductive module; the conductive module is electrically connected with the first grounding device and forms a loop with the current generator;
further comprising: and the insulating sleeve isolates the collecting ring from the transmission shaft.
Further, the conductive module is further used for fixing a second carbon brush to be tested, the conductive module is arranged in the radial direction of the transmission shaft, and the second carbon brush to be tested is abutted to the collecting ring through the conductive module.
Furthermore, the shaft end testing device at one end of the transmission shaft is connected with the shaft end testing device at the other end of the transmission shaft in series, and the conductive module of the shaft end testing device at one end of the transmission shaft is connected with the conductive module of the shaft end testing device at the other end of the transmission shaft through a wire.
Further, the insulating sheath includes: the insulating gasket is arranged on the contact surface of the collecting ring and the transmission shaft.
Further, the first grounding device comprises a first grounding device constant-force spring, and the first grounding device constant-force spring elastically abuts the first carbon brush to be tested against the friction part.
Further, the conductive module comprises a conductive module constant-force spring, and the second carbon brush to be tested is elastically abutted to the collecting ring through the conductive module constant-force spring.
The utility model also provides a carbon brush wearing and tearing life-span test experiment platform, carbon brush wearing and tearing life-span test experiment platform include a plurality of as before carbon brush wearing and tearing life-span test equipment.
Furthermore, the device also comprises a computer control end, and the computer control end is connected with the driving device and the power supply.
Further, still include: and the air supply device is over against the carbon brush abrasion life test experiment table and is connected with the computer control end.
The technical effects of the utility model reside in that: the abrasion degree of the carbon brushes of multiple marks can be detected simultaneously in the axial direction and the radial direction, the current trend is optimized, and the service life of the transmission shaft is prolonged.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a front view and a cross-sectional view of the structure according to an embodiment of the present invention;
fig. 2 is a sectional view of a slip ring according to an embodiment of the present invention;
FIG. 3 is a structural diagram of the experiment table of the present invention;
fig. 4 is a top view of the experiment table of the present invention;
fig. 5 is a schematic diagram of the experiment table of the present invention.
Description of reference numerals: 1-a conductive module; 100-a second carbon brush to be tested; 2-a belt pulley; 3-a first grounding device; 4-a transmission shaft; 5-backing plate; 6-a friction member; 7-a bearing; 8-bearing seats; 9-a collecting ring; 10-a grounding device support; 91-a steel ring; 92-an insulating spacer; 93-an insulating sleeve; 10-a grounding device support; 11-computer control end; 12-a shield; 13-a wind supply system; 16-a frequency converter electronic control system; 17-a belt; 20-current generating means.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, the utility model discloses a carbon brush wearing and tearing life-span test equipment, including transmission shaft 4 and axle head testing arrangement, transmission shaft 4 passes through drive arrangement and rotates, axle head testing arrangement be at least one and with transmission shaft 4's tip one-to-one, axle head testing arrangement includes friction part 6, first earthing device 3, collecting ring 9 and conductive module 1, friction part 6 and transmission shaft 4's end connection, first earthing device 3 sets up with friction part 6 relatively, first carbon brush that awaits measuring is fixed through first earthing device 3 and with friction part 6 butt. The collecting ring 9 is sleeved on the transmission shaft 4 and connected with the friction part 6, and the collecting ring 9 is connected with the conductive module 1. The conductive module 1 is electrically connected to the first grounding device 3 and forms a loop with the current generator 20. An insulating sleeve is also included to isolate the slip ring 9 from the drive shaft 4.
The first grounding device 3 can fix the first carbon brush to be tested, and after the first carbon brush to be tested is abutted to the friction part 6, the driving device of the transmission shaft 4 is started, so that the transmission shaft 4 runs at the application rated rotating speed to drive the friction part 6 fixed at one end of the transmission shaft to rotate together. In this embodiment, the friction member 6 is a friction disk, and may also be another friction member that generates axial wear to the first brush to be tested, which is not limited herein. After the equipment runs for a period of time, the abrasion length of the carbon brush during shaft end friction can be measured, so that the service life of the carbon brush in abrasion of kilometers is calculated, and a powerful reference is provided for selection of the brand number of the grounding carbon brush. In addition, in order to further simulate the working environment of the carbon brush, the current generator 20 may be used to energize the first carbon brush to be tested, and at this time, the current flows out from the current generator 20, passes through the first grounding device 3 and the first carbon brush to be tested fixed thereon, passes through the friction member 6 to the slip ring 9, and then returns to the current generator 20 through the conductive module 1 to form a loop. The collecting ring 9 is sleeved on the transmission shaft 4, is arranged on the transmission shaft 4 in an interference fit manner with the transmission shaft 4, and is positioned and connected by a flat key. The slip ring 9 can also rotate in unison with the rotation of the drive shaft 4. The conductive module 1 may be a common carbon brush to transmit current when the slip ring 9 rotates at a high speed.
In addition, the present embodiment further includes a bearing 7 and a bearing frame 8, the backing plate 5 is used for supporting the bearing frame 8, the belt pulley 2 is installed at the center of the transmission shaft 4, the belt pulley 2 is connected with a driving device through a belt 17, and after the driving device starts to rotate, the belt 17 drives the belt pulley 2, and thus the transmission shaft 4 to rotate. The grounding device support 10 is used for supporting the first grounding device 3 and is matched with the height of the backing plate 5, so that the height of the axis of the transmission shaft is consistent with that of the first grounding device 3.
Because in the process of current transmission, the current may partially flow to the transmission shaft 4, which causes electric heating, affects the experimental result, and shortens the service life of the transmission shaft 4, an insulating sleeve is added between the collecting ring 9 and the transmission shaft 4 to block the current, so that the current directly returns to the current generating device 20 through the conductive module 1 when flowing through the collecting ring 9, and the service life of the transmission shaft 4 is prolonged.
Further, the conductive module 1 is further used for fixing a second carbon brush 100 to be tested, the conductive module 1 is arranged in the radial direction of the transmission shaft 4, and the second carbon brush 100 to be tested is abutted to the collecting ring 9 through the conductive module 1. Because the conductive module 1 also uses the carbon brush, the carbon brush in the conductive module 1 can also be used for testing the radial wear of the carbon brush at a high speed, the number of kilometers used by the carbon brush during radial friction is calculated, and at this time, the collecting ring 9 also has the function of radially rubbing the second carbon brush 100 to be tested. In other words, the conductive module 1 at this time corresponds to a gear box grounding device. In order to enable the slip ring 9 and the second carbon brush 100 to be tested to generate friction, the surface of the slip ring 9 should have a certain roughness and a certain hardness compared with the smooth surface of the conventional slip ring. The surface roughness of the collector ring 9 is preferably 0.75-1.6 microns, the Brinell hardness is 160-250 HB, preferably 205HB, and the specific hardness of the collector ring 9 is adjusted through a heat treatment mode. In order to better simulate the wear of the second carbon brush 100 to be tested in the actual condition of the conductive module 1, i.e. the gearbox grounding device. The material of the collecting ring 9 is the same as the material selected for the conductive module 1, and steel-35 is preferable. Therefore, the influence of axial abrasion and radial abrasion on the abrasion service life of the carbon brush can be tested simultaneously in one experimental process.
Further, as shown in fig. 2, the insulating sheath includes: an insulating gasket 92 and an insulating bush 93, wherein the insulating bush 93 is sleeved on the end part of the transmission shaft 4 to isolate the end surface part of the steel ring 91 of the collecting ring 9, which is contacted with the transmission shaft 4. An insulating spacer 92 is attached to a contact surface of the slip ring 9 and the drive shaft 4 to sufficiently block current flowing to the drive shaft 4.
Further, the transmission shaft 4 has two ends, so that two ends of the transmission shaft 4 can be respectively provided with a shaft end testing device to simultaneously test more brushes to be tested. Meanwhile, a plurality of electric brushes to be tested can be simultaneously installed on the first grounding device 3 and the conductive module 1, the number of the electric brushes to be tested can be further increased, and the testing efficiency is accelerated. Under the condition that two shaft end testing devices are respectively arranged at two ends of the transmission shaft 4, two current generating devices can be arranged so as to respectively electrify the shaft end testing devices at the two ends of the transmission shaft 4. The shaft end testing devices at two ends of the transmission shaft 4 can also be connected in series, the shaft end testing device at one end is connected in series with the shaft end testing device at the other end of the transmission shaft 4, at the moment, after the shaft end testing device at one end of the transmission shaft 4 flows through the conductive module 1, the current flows to the conductive module 1 of the shaft end testing device at the other end of the transmission shaft 4 through the connecting wire, then normally flows to the first grounding device 3 of the shaft end testing device at the other end of the transmission shaft 4, and then returns to the current generator 20. After the shaft end testing devices at the two ends are connected in series through the conducting wire, the current can not be transmitted through the transmission shaft 4, the electric heating of the transmission shaft 4 after the electrification is avoided, the experimental result is influenced, and the service life of the transmission shaft 4 is prolonged. Similarly, the transmission shaft 4 can also be a plurality of shaft end testing devices, that is, in the case of a plurality of shaft end testing devices, each shaft end testing device can also be connected in series through a conducting wire, that is, the conducting modules 1 of each shaft end testing device are connected with each other, and the flow direction of the current can also be changed to protect the transmission shaft 4.
Further, the first grounding device 3 includes a first grounding device constant-force spring that elastically abuts the first carbon brush to be measured against the friction member 6.
Further, the conductive module 1 includes a conductive module constant force spring, and the conductive module constant force spring elastically pushes the second carbon brush 100 to be tested against the collecting ring 9.
When the transmission shaft 4 rotates, the first grounding device 3 and the friction member 6 generate mutual friction loss, and the conductive module 1 and the slip ring 9 generate mutual friction loss. In order to ensure that the first grounding device 3 and the carbon brush to be tested on the conductive module 1 are fully abutted with the friction part 6 and the collecting ring 9, a constant force spring is introduced on the first grounding device 3 and the conductive module 1, and when the brush to be tested is damaged through friction, the constant force spring can elastically push the brush to be tested to the collecting ring 9 or the friction part 6.
The utility model also discloses a carbon brush wearing and tearing life-span test laboratory bench, as shown in fig. 3 to 5, carbon brush wearing and tearing life-span test laboratory bench includes a plurality of aforementioned carbon brush wearing and tearing life-span test equipment, and the array direction of transmission shaft 4 does not limit, and many transmission shafts 4 of drive arrangement simultaneous drive also can be introduced a plurality of drive arrangement and drive a plurality of transmission shaft 4 rotations respectively.
Further, still include: and the temperature sensor is arranged on the side of the shaft end testing device and used for monitoring heat generated by friction when the shaft end testing device operates and giving an alarm in time.
Further, a computer control terminal 11 is included, and the computer control terminal 11 is connected with the driving device, the current generator 20 and the temperature sensor. The computer control end 11 comprises a PLC control system and a numerical control display screen component, and the computer control end 11 is connected with the driving device, the current generator 20 and the temperature sensor. And displaying the detected real-time data, such as temperature, speed and other information on the display screen through the numerical control display screen. The control panel is provided with a state indicator lamp for indicating the running state and abnormal alarm of the equipment in a one-to-one correspondence manner, and is also provided with an alarm release button.
Further, still include: the air supply device 13 is opposite to the carbon brush abrasion life test experiment table, and the air supply device 13 is connected with the computer control end 11. According to the real-time feedback of the temperature sensor, the starting time of the sealing device 13 can be determined, and the experiment table is kept at a proper temperature.
Further, the laboratory bench further includes a shield 12 to shield external dust and protect a user from the drive shaft 4 in high-speed operation.
Further, a frequency converter control system 16 is included, and the frequency converter can change the power supply frequency, so that the load can be adjusted, and the effects of reducing power consumption, reducing loss, prolonging the service life of equipment and the like are achieved. The frequency converter controls the rotating speed of the driving device to control the rotating speed of the equipment, and the frequency converter can be used for controlling the rotating speed of the equipment to test according to various different running speeds so as to obtain an ideal test result.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. The carbon brush abrasion life testing equipment is characterized by comprising a transmission shaft and a shaft end testing device, wherein the transmission shaft rotates through a driving device, the shaft end testing device is at least one and corresponds to the end part of the transmission shaft one by one, the shaft end testing device comprises a friction part, a first grounding device, a collecting ring and a conductive module, the friction part is connected with the end part of the transmission shaft, the first grounding device is opposite to the friction part, and a first carbon brush to be tested is fixed through the first grounding device and is abutted to the friction part; the collecting ring is sleeved on the transmission shaft and connected with the friction part, and the collecting ring is connected with the conductive module; the conductive module is electrically connected with the first grounding device and forms a loop with the current generator;
further comprising: and the insulating sleeve isolates the collecting ring from the transmission shaft.
2. The carbon brush abrasion life test apparatus according to claim 1, wherein the conductive module is further configured to fix a second carbon brush to be tested, the conductive module is disposed in a radial direction of the transmission shaft, and the second carbon brush to be tested abuts against the collector ring through the conductive module.
3. The carbon brush wear life test apparatus according to claim 1, wherein the shaft end test device at one end of the transmission shaft is connected in series with the shaft end test device at the other end of the transmission shaft, and the conductive module of the shaft end test device at one end of the transmission shaft is connected to the conductive module of the shaft end test device at the other end of the transmission shaft by a wire.
4. The carbon brush wear life test apparatus of claim 1, wherein the insulation sleeve includes: the insulating gasket is arranged on the contact surface of the collecting ring and the transmission shaft.
5. The carbon brush wear life test apparatus according to claim 1, wherein the first grounding device includes a first grounding device constant force spring that elastically abuts the first carbon brush to be tested against the friction member.
6. The carbon brush abrasion life test apparatus according to claim 2, wherein the conductive module includes a conductive module constant force spring elastically abutting the second carbon brush to be tested against the collector ring.
7. A carbon brush wear life test bench characterized by comprising a plurality of carbon brush wear life test apparatuses according to any one of claims 1 to 6.
8. The carbon brush abrasion life test experiment table according to claim 7, further comprising a computer control terminal, wherein the computer control terminal is connected with the driving device and the power supply.
9. The carbon brush wear life test laboratory table according to claim 8, further comprising: and the air supply device is over against the carbon brush abrasion life test experiment table and is connected with the computer control end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020797966.3U CN212459263U (en) | 2020-05-14 | 2020-05-14 | Carbon brush abrasion life test equipment and experiment table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020797966.3U CN212459263U (en) | 2020-05-14 | 2020-05-14 | Carbon brush abrasion life test equipment and experiment table |
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| CN212459263U true CN212459263U (en) | 2021-02-02 |
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| CN202020797966.3U Active CN212459263U (en) | 2020-05-14 | 2020-05-14 | Carbon brush abrasion life test equipment and experiment table |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474075A (en) * | 2020-05-14 | 2020-07-31 | 摩根新材料(上海)有限公司 | Carbon brush abrasion life test equipment and experiment table |
| CN114166739A (en) * | 2021-12-09 | 2022-03-11 | 中国科学院兰州化学物理研究所 | Device for detecting friction state of hydrogen-containing diamond-like carbon film in real time and application |
-
2020
- 2020-05-14 CN CN202020797966.3U patent/CN212459263U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474075A (en) * | 2020-05-14 | 2020-07-31 | 摩根新材料(上海)有限公司 | Carbon brush abrasion life test equipment and experiment table |
| CN114166739A (en) * | 2021-12-09 | 2022-03-11 | 中国科学院兰州化学物理研究所 | Device for detecting friction state of hydrogen-containing diamond-like carbon film in real time and application |
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