CN215297595U - BLDC motor load detection device - Google Patents
BLDC motor load detection device Download PDFInfo
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- CN215297595U CN215297595U CN202121200120.8U CN202121200120U CN215297595U CN 215297595 U CN215297595 U CN 215297595U CN 202121200120 U CN202121200120 U CN 202121200120U CN 215297595 U CN215297595 U CN 215297595U
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Abstract
The utility model relates to a BLDC motor load detection device, include: the device comprises a rotating shaft, a self-aligning bearing, a flexible connecting piece and a resistance motor, wherein the rotating shaft penetrates through the self-aligning bearing and is fixedly connected with an inner ring of the self-aligning bearing; one end of the flexible connecting piece, which is far away from the rotating shaft, is fixedly connected with an output shaft of a resistance motor, and the resistance motor drives the flexible connecting piece to rotate; and the relative positions of the shell of the resistance motor and the outer ring of the self-aligning bearing are fixed. The utility model discloses a centering bearing carries out the aligning to the axis of rotation, and flexible connection spare provides radial flexibility and makes axis of rotation and motor shaft have the axiality error, nevertheless can not exert an influence to being surveyed motor load, has solved to be surveyed motor shaft and resistance motor shaft and has had the axiality error, causes to be surveyed motor load and detects the inaccurate problem.
Description
Technical Field
The utility model relates to a motor detection area, concretely relates to BLDC motor load detection device.
Background
When the motor is subjected to a load test, the shaft of the motor and the shaft of the resistance motor below the motor have errors in coaxiality. The existing testing device is characterized in that a shaft of a motor is rigidly connected with a shaft of a resistance motor below the motor, and the resistance motor and a tested motor have a frictional force under the condition of non-concentricity, which is equivalent to the fact that an external force is added, so that the detection result is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem, provide a BLDC motor load detection device, solved and had the axiality error by survey motor shaft and resistance motor shaft, caused to be surveyed the inaccurate problem of motor load detection.
A BLDC motor load detecting device, comprising: the device comprises a rotating shaft, a self-aligning bearing, a flexible connecting piece and a resistance motor, wherein the rotating shaft penetrates through the self-aligning bearing and is fixedly connected with an inner ring of the self-aligning bearing; one end of the flexible connecting piece, which is far away from the rotating shaft, is fixedly connected with an output shaft of a resistance motor, and the resistance motor drives the flexible connecting piece to rotate; and the relative positions of the shell of the resistance motor and the outer ring of the self-aligning bearing are fixed.
The resistance motor is fixedly connected with the first fixing plate, the lower part of the first fixing plate is fixedly connected with a cylinder body of the second jacking cylinder, and a piston rod of the second jacking cylinder penetrates through the first fixing plate and then is fixedly connected with the rack; the first linear bearing is fixedly connected with the rack, the first guide pillar penetrates through the first linear bearing and is connected with the first linear bearing, the upper end of the first guide pillar is fixedly connected with the second fixing plate, the lower end of the first guide pillar is fixedly connected with the first fixing plate, and the outer ring of the self-aligning bearing is fixedly connected with the second fixing plate.
The device comprises a rack, a workbench, a first cylinder, a platform and a conveying device, wherein the conveying device is installed on the rack, the workbench is positioned between the two conveying devices, jacks are formed below the workbench, the platform is positioned below the workbench, a plug is formed above the platform, chamfers or fillets are formed above the plug, and the plug is inserted into the jacks to limit the workbench to horizontally move relative to the platform; the cylinder body of the first cylinder is fixedly connected with the rack, and the piston rod of the first cylinder is fixedly connected with the platform.
The lower end of the connecting shaft is fixedly connected with the rotating shaft, a fixing hole is formed in the upper end of the connecting shaft, a notch part is formed in the fixing hole and matched with the plane of the output shaft of the motor to be tested, and the connecting shaft penetrates through the platform and the workbench to be sleeved on the outer side of the output shaft of the motor to be tested and drives the output shaft of the motor to be tested to rotate; and a chamfer or a fillet is formed at the upper end of the fixing hole.
Further, flexible connection spare is silica gel or rubber and makes, the flexible connection spare suit is in the output shaft outside of axis of rotation and resistance motor, the inside internal thread that is formed with of flexible connection spare.
Furthermore, two jacks are formed below the workbench, and two plugs are formed above the platform.
The device comprises a rack, a rack and a pressing block, and further comprises a pressing cylinder, a fixing frame, a support and a pressing block, wherein the fixing frame is used for limiting the horizontal motion of a motor to be tested, the support is fixedly connected with the rack, the support is fixedly connected with a cylinder body of the pressing cylinder, a piston rod of the pressing cylinder is fixedly connected with the pressing block, the fixing frame is positioned above a workbench and is fixedly connected with the workbench, and the pressing cylinder drives the pressing block to tightly fix the motor to be tested above the fixing frame.
Furthermore, the device also comprises two fixed claws, wherein the rotating shaft is positioned between the two fixed claws, and the fixed claws are fixedly connected with the second fixed plate.
The lower part of the platform is fixedly connected with the second guide pillar, the second guide pillar penetrates through the second linear bearing and is connected with the second linear bearing, and the second linear bearing is fixedly connected with the rack.
Further, the resistance motor is electrically connected with the detection device.
The utility model has the advantages of as follows: the rotating shaft is aligned through the adjusting bearing, the flexible connecting piece provides radial flexible deviation to enable the rotating shaft and the motor shaft to have coaxiality errors, the measured motor load cannot be affected, and the problem that the measured motor load is inaccurate due to the coaxiality errors of the measured motor shaft and the resistance motor shaft is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawing in the following description is only an embodiment of the invention, and that for a person skilled in the art, other embodiments can be derived from the drawing provided without inventive effort.
FIG. 1: the utility model has a schematic view of the structure;
FIG. 2: the side view cross-sectional structural schematic of the present invention (the frame and the conveyor are not shown);
FIG. 3: the utility model has one of the three-dimensional structure schematic diagrams;
FIG. 4: the utility model discloses a second three-dimensional structure schematic diagram (the frame and the conveying device are not shown);
FIG. 5: the third part of the three-dimensional structure of the utility model is not shown;
FIG. 6: the utility model discloses a spatial structure schematic diagram its four (part parts are not shown).
Detailed Description
The invention will be further described with reference to the following figures and examples:
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1 to 6, the present embodiment provides a load detection apparatus of a BLDC motor, including: the device comprises a rotating shaft 4, a self-aligning bearing 5, a flexible connecting piece 6 and a resistance motor 7, wherein the rotating shaft 4 penetrates through the self-aligning bearing 5 and is fixedly connected with an inner ring of the self-aligning bearing 5, one end of the rotating shaft 4 rotates synchronously with an output shaft of a motor 12 to be tested, and the other end of the rotating shaft is fixedly connected with the flexible connecting piece 6; one end of the flexible connecting piece 6, which is far away from the rotating shaft 4, is fixedly connected with an output shaft of a resistance motor 7, and the resistance motor 7 drives the flexible connecting piece 6 to rotate; and the relative positions of the shell of the resistance motor 7 and the outer ring of the self-aligning bearing 5 are fixed.
Further, the device also comprises a rack 1, a first fixing plate 8, a first guide pillar 9, a first linear bearing 14, a second jacking cylinder 15 and a second fixing plate 17, wherein the resistance motor 7 is fixedly connected with the first fixing plate 8, the lower part of the first fixing plate 8 is fixedly connected with a cylinder body of the second jacking cylinder 15, and a piston rod of the second jacking cylinder 15 penetrates through the first fixing plate 8 and then is fixedly connected with the rack 1; the first linear bearing 14 is fixedly connected with the frame 1, the first guide pillar 9 penetrates through the first linear bearing 14 and is connected with the first linear bearing 14, the upper end of the first guide pillar 9 is fixedly connected with the second fixing plate 17, the lower end of the first guide pillar 9 is fixedly connected with the first fixing plate 8, and the outer ring of the self-aligning bearing 5 is fixedly connected with the second fixing plate 17.
Further, the device comprises a workbench 3, a first air cylinder 10, a platform 11 and conveying devices 13, wherein the conveying devices 13 are installed on the frame 1, the workbench 3 is positioned between the two conveying devices 13, an insertion hole 31 is formed below the workbench 3, the platform 11 is positioned below the workbench 3, a plug 111 is formed above the platform 11, a chamfer or a fillet is formed above the plug 111, and the plug 111 is inserted into the insertion hole 31 to limit the workbench 3 to horizontally move relative to the platform 11; the cylinder body of the first cylinder 10 is fixedly connected with the frame 1, and the piston rod of the first cylinder 10 is fixedly connected with the platform 11.
Further, the device also comprises a connecting shaft 16, the lower end of the connecting shaft 16 is fixedly connected with the rotating shaft 4, a fixing hole 161 is formed at the upper end of the connecting shaft 16, a notch 162 is formed in the fixing hole 161, the notch 162 is matched with the plane 121 of the output shaft of the tested motor 12, and the connecting shaft 16 penetrates through the platform 11 and the workbench 3 and then is sleeved on the outer side of the output shaft of the tested motor 12 and drives the output shaft of the tested motor 12 to rotate; the upper end of the fixing hole 161 is formed with a chamfer or a fillet.
Further, flexible connection piece 6 is silica gel or rubber and makes, flexible connection piece 6 suit is in the output shaft outside of axis of rotation 4 and resistance motor 7, flexible connection piece 6 inside is formed with the internal thread.
Further, two insertion holes 31 are formed below the table 3, and two plugs 111 are formed above the table 11.
Further, the device comprises a pressing cylinder 2, a fixing frame 3a used for limiting the horizontal movement of the motor 12 to be detected, a support 21 and a pressing block 22, wherein the support 21 is fixedly connected with the rack 1, the support 21 is fixedly connected with a cylinder body of the pressing cylinder 2, a piston rod of the pressing cylinder 2 is fixedly connected with the pressing block 22, the fixing frame 3a is located above the workbench 3 and fixedly connected with the workbench 3, and the pressing cylinder 2 drives the pressing block 22 to press and fix the motor 12 to be detected above the fixing frame 3 a.
Further, two fixed claws 19 are further included, the rotating shaft 4 is located between the two fixed claws 19, and the fixed claws 19 are fixedly connected with the second fixed plate 17.
Further, the device also comprises a second guide post 18 and a second linear bearing 20, the lower part of the platform 11 is fixedly connected with the second guide post 18, the second guide post 18 passes through the second linear bearing 20 and is connected with the second linear bearing 20, and the second linear bearing 20 is fixedly connected with the frame 1.
Further, the resistance motor 7 is electrically connected with the detection device.
The working principle is as follows:
the two conveyors 13 (conveyor belts) below the table 3 move synchronously, and when the table 3 is driven to move below the pressing block 22, the conveyors 13 stop operating.
The first cylinder 10 drives the platform 11 to move upwards, so that the plug 111 is inserted into the jack 31, and the chamfer or fillet of the plug 111 plays a guiding role. The upper surface of the platform 11 contacts with the lower surface of the worktable 3, drives the worktable 3 to move upwards, and stops the action of the first air cylinder 10 and maintains pressure after the worktable 3 is separated from the contact with the conveying device 13. The pressing cylinder 2 drives the pressing block 22 to move downwards, and the tested motor 12 is pressed on the fixed frame 3 a. The fixed frame 3a limits the horizontal movement of the tested motor 12, and the tested motor 12 and the fixed frame 3a limit the vertical movement of the tested motor 12, so that the tested motor 12 and the fixed frame 3a are fixed.
The second jacking cylinder 15 drives the first fixing plate 8 and the second fixing plate 17 to move upwards, and the motor 12 to be tested rotates. The connecting shaft 16 moves upward, the output shaft of the motor 12 under test is first inserted into the chamfer or fillet of the fixing hole 161, and the notch 162 contacts the flat surface 121 as the connecting shaft 16 rotates. After the notch 162 is in contact with the flat surface 121, the connecting shaft 16 moves upward until the output shaft of the motor 12 under test is inserted into the fixing hole 161.
The resistance motor 7 drives the output shaft of the motor 12 to rotate, and the detection device detects data such as current and/or voltage of the resistance motor 7, thereby detecting the load of the motor 12.
After the test is finished, the resistance motor 7 stops rotating, the second jacking cylinder 15 drives the first fixing plate 8 and the second fixing plate 17 to move downwards for resetting, the first cylinder 10 drives the platform 11 to move downwards for resetting, and the pressing cylinder 2 drives the pressing block 22 to move upwards for resetting. The table 3 is brought into contact with the transport device 13, and the transport device 13 drives the table 3 out of the working position and drives a new table 3 into the working position.
The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.
Claims (10)
1. A load detection device for a BLDC motor, comprising: the device comprises a rotating shaft (4), a self-aligning bearing (5), a flexible connecting piece (6) and a resistance motor (7), wherein the rotating shaft (4) penetrates through the self-aligning bearing (5) and is fixedly connected with an inner ring of the self-aligning bearing (5), one end of the rotating shaft (4) rotates synchronously with an output shaft of a tested motor (12), and the other end of the rotating shaft is fixedly connected with the flexible connecting piece (6); one end, far away from the rotating shaft (4), of the flexible connecting piece (6) is fixedly connected with an output shaft of a resistance motor (7), and the resistance motor (7) drives the flexible connecting piece (6) to rotate; and the relative position of the shell of the resistance motor (7) and the outer ring of the self-aligning bearing (5) is fixed.
2. A load sensing apparatus of a BLDC motor as claimed in claim 1, wherein: the lifting device is characterized by further comprising a rack (1), a first fixing plate (8), a first guide pillar (9), a first linear bearing (14), a second lifting cylinder (15) and a second fixing plate (17), wherein the resistance motor (7) is fixedly connected with the first fixing plate (8), the lower part of the first fixing plate (8) is fixedly connected with a cylinder body of the second lifting cylinder (15), and a piston rod of the second lifting cylinder (15) penetrates through the first fixing plate (8) and then is fixedly connected with the rack (1); the first linear bearing (14) is fixedly connected with the rack (1), the first guide pillar (9) penetrates through the first linear bearing (14) and is connected with the first linear bearing (14), the upper end of the first guide pillar (9) is fixedly connected with the second fixing plate (17), the lower end of the first guide pillar (9) is fixedly connected with the first fixing plate (8), and the outer ring of the self-aligning bearing (5) is fixedly connected with the second fixing plate (17).
3. A load sensing apparatus of a BLDC motor as claimed in claim 1, wherein: the automatic feeding device is characterized by further comprising a workbench (3), a first air cylinder (10), a platform (11) and conveying devices (13), wherein the conveying devices (13) are mounted on the rack (1), the workbench (3) is located between the two conveying devices (13), jacks (31) are formed below the workbench (3), the platform (11) is located below the workbench (3), plugs (111) are formed above the platform (11), chamfers or fillets are formed above the plugs (111), and the plugs (111) are inserted into the jacks (31) to limit the workbench (3) to horizontally move relative to the platform (11); the cylinder body of the first cylinder (10) is fixedly connected with the rack (1), and the piston rod of the first cylinder (10) is fixedly connected with the platform (11).
4. A load detecting device of a BLDC motor as claimed in claim 3, wherein: the lower end of the connecting shaft (16) is fixedly connected with the rotating shaft (4), a fixing hole (161) is formed in the upper end of the connecting shaft (16), a notch portion (162) is formed in the fixing hole (161), the notch portion (162) is matched with a plane (121) of an output shaft of the tested motor (12), and the connecting shaft (16) penetrates through the platform (11) and the workbench (3) and then is sleeved on the outer side of the output shaft of the tested motor (12) and drives the output shaft of the tested motor (12) to rotate; the upper end of the fixing hole (161) is provided with a chamfer or a fillet.
5. A load sensing apparatus of a BLDC motor as claimed in claim 1, wherein: the flexible connecting piece (6) is made of silica gel or rubber, the flexible connecting piece (6) is sleeved outside the output shafts of the rotating shaft (4) and the resistance motor (7), and internal threads are formed inside the flexible connecting piece (6).
6. A load detecting device of a BLDC motor as claimed in claim 3, wherein: two jacks (31) are formed below the workbench (3), and two plugs (111) are formed above the platform (11).
7. A load detecting device of a BLDC motor as claimed in claim 3, wherein: still including compressing tightly cylinder (2), be used for restricting mount (3a), support (21) and compact heap (22) of being surveyed motor (12) horizontal motion, support (21) and frame (1) fixed connection, support (21) and the cylinder body fixed connection who compresses tightly cylinder (2), the piston rod and compact heap (22) fixed connection who compresses tightly cylinder (2), mount (3a) are located workstation (3) top and with workstation (3) fixed connection, it will be surveyed motor (12) the compaction and fix in mount (3a) top to compress tightly cylinder (2) drive compact heap (22).
8. A load sensing apparatus of a BLDC motor as claimed in claim 2, wherein: the rotating shaft (4) is located between the two fixed claws (19), and the fixed claws (19) are fixedly connected with the second fixed plate (17).
9. A load detecting device of a BLDC motor as claimed in claim 3, wherein: the platform is characterized by further comprising a second guide post (18) and a second linear bearing (20), the lower portion of the platform (11) is fixedly connected with the second guide post (18), the second guide post (18) penetrates through the second linear bearing (20) and is connected with the second linear bearing (20), and the second linear bearing (20) is fixedly connected with the rack (1).
10. A load sensing apparatus of a BLDC motor as claimed in claim 1, wherein: and the resistance motor (7) is electrically connected with the detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200120.8U CN215297595U (en) | 2021-05-31 | 2021-05-31 | BLDC motor load detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200120.8U CN215297595U (en) | 2021-05-31 | 2021-05-31 | BLDC motor load detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215297595U true CN215297595U (en) | 2021-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121200120.8U Active CN215297595U (en) | 2021-05-31 | 2021-05-31 | BLDC motor load detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215297595U (en) |
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2021
- 2021-05-31 CN CN202121200120.8U patent/CN215297595U/en active Active
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| GR01 | Patent grant | ||
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Address after: 266000 Building 1, 187 Jinshui Road, Licang District, Qingdao City, Shandong Province Patentee after: Zhongte Technology (Qingdao) Co.,Ltd. Address before: 266000 Building 1, 187 Jinshui Road, Licang District, Qingdao City, Shandong Province Patentee before: ZTD TECHNOLOGY INDUSTRY (QINGDAO) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |