CN115201677A

CN115201677A - Load testing tool suitable for miniature external rotor brushless motor

Info

Publication number: CN115201677A
Application number: CN202210810182.3A
Authority: CN
Inventors: 倪圣叨; 胡春元; 王浩
Original assignee: Dongguan Jilaisheng Motor Co ltd
Current assignee: Dongguan Jilaisheng Motor Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-10-18

Abstract

The application relates to the field of testing of miniature motors, in particular to a load testing tool applicable to a miniature outer rotor brushless motor, which comprises a base, a supporting seat, an adjusting seat, a clamping device, a motor and a rotating piece, wherein the supporting seat is arranged on the base; the supporting seat is arranged on the base, and the adjusting seat is arranged on the supporting seat; the clamping device is arranged on the adjusting seat and used for clamping the motor, and the adjusting seat is used for adjusting the position of the clamping device; the rotating element comprises a rotating rod and a torque disc, and the rotating rod penetrates through the base and is in rotating connection with the base; one end of the rotating rod is fixedly connected with the torque disc, and an output shaft of the motor is fixedly connected with the other end of the rotating rod. The method and the device improve the accuracy of measuring the motor torque.

Description

Load testing tool suitable for miniature external rotor brushless motor

Technical Field

The application relates to the field of miniature motor testing, in particular to a load testing tool applicable to a miniature outer rotor brushless motor.

Background

With the development of science and technology, various intelligent household appliances appear in succession at present. The function is more and more complete, and the structure is more and more accurate, and the size is more and more small and exquisite. The market has more and more demands on the miniature brushless motor, and also puts forward higher requirements on the performance of the motor, so that the requirement on safety is better, the performance is more stable, and the performance parameters are more accurate. In order to meet the new requirements of customers, whether the load rotating speed and the load current of the motor reach the standard or not is an important means for detecting the quality of the motor.

In the related art, the conventional practice in the industry is to use a weight hanging mode for testing, and the conventional weight hanging mode has many disadvantages. The conventional method is that after the motor is horizontally fixed, a torque disc is directly added at the end of an output shaft, one or two circles of ropes are wound in a groove of the torque disc, one end of each rope is fixed above the groove, and a weight is bound at one end of each rope, so that the load rotating speed and the load current of the micro motor are measured by the method.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: because the torque of the micro motor is very small, in the process of testing the torque of the micro motor, if the weight is directly arranged on the output shaft of the motor, the weight can apply a downward force to the output shaft end of the motor; by measuring the torque of the motor in this way, the error is large.

Disclosure of Invention

In order to improve the accuracy of measuring motor torque, this application provides one kind and is applicable to miniature outer rotor brushless motor load test frock.

The application provides a be applicable to miniature outer rotor brushless motor load test fixture adopts following technical scheme:

a load test tool suitable for a miniature outer rotor brushless motor comprises a base, a supporting seat, an adjusting seat, a clamping device, a motor and a rotating piece; the supporting seat is arranged on the base, and the adjusting seat is arranged on the supporting seat; the clamping device is arranged on the adjusting seat and used for clamping the motor, and the adjusting seat is used for adjusting the position of the clamping device; the rotating element comprises a rotating rod and a moment disc, and the rotating rod penetrates through the base and is rotationally connected with the base; one end of the rotating rod is fixedly connected with the torque disc, and the output shaft of the motor is fixedly connected with the other end of the rotating rod.

By adopting the technical scheme, the clamping device has a clamping effect on the motor, so that the convenience for workers to install and detach the motor is increased by fixing the motor on the adjusting seat; because the rotary rod rotates with the base to be connected, the one end and the moment dish of rotary disk are fixed, at the in-process of test motor moment of torsion, the staff hangs the weight on the rotary disk, the rotary disk has the bearing effect to the weight, then through the motor drive rotary rod, the rotary rod drives the rotary disk rotatory, let the moment dish bear the weight alone with the weight of weight, the radius size through the weight of weight and moment dish, thereby reach the moment of torsion of motor, and then realize the measurement to the motor moment of torsion, this kind of measuring method can make measuring result's precision obtain promoting.

Optionally, the clamping device includes a plurality of clamping mechanisms, and the adjusting seat is provided with a plurality of first sliding grooves; each clamping mechanism comprises a first sliding piece, a clamping piece and a connecting piece; the first sliding piece is in sliding fit with the first sliding groove; the clamping piece comprises a clamping block, a connecting block and a first guide block which are fixedly connected, the first guide block is in sliding fit with the first sliding groove, the connecting block abuts against the adjusting seat, and the clamping block is used for clamping the motor; the connecting piece includes fixed connection's first screw rod and first anticreep pole, first screw rod passes the holder, first screw rod with first sliding part screw-thread fit, first anticreep pole butt in on the holder.

By adopting the technical scheme, the first sliding groove has a guiding function on the first sliding piece so that the first sliding piece stably slides along the length direction of the first sliding groove; meanwhile, the first screw is in threaded fit with the first sliding piece, the first anti-falling rod and the first sliding piece have a clamping effect on the clamping piece, and the clamping piece and the first sliding piece have a clamping effect on the lifting plate, so that the clamping piece is fixed on the lifting plate; meanwhile, the clamping blocks have a clamping effect on the motor, so that the motor is fixed on the adjusting seat; meanwhile, the staff can adjust the first sliding piece, the clamping piece and the connecting piece along the length direction of the first sliding groove conveniently, and convenience of installing and disassembling the motor by the staff is improved.

Optionally, a limiting clamping groove is formed in the clamping block, a fixing plate is fixedly arranged on the motor, and the edge of the fixing plate is located inside the limiting clamping groove.

Through adopting above-mentioned technical scheme, spacing draw-in groove on a plurality of grip blocks has a spacing effect to the fixed plate to on being fixed in the regulation seat with the fixed plate, increased the fastness of a plurality of grip block centre gripping fixed plates, thereby increased the fastness of motor installation.

Optionally, the clamping device includes a plurality of driving mechanisms and a plurality of abutting mechanisms, the plurality of abutting mechanisms are circumferentially distributed on the adjusting seat, and the driving mechanisms are configured to simultaneously drive the plurality of abutting mechanisms to abut against the motor;

the driving mechanism comprises a rotating disc which is rotatably arranged on the adjusting seat, and the rotating disc is provided with a position avoiding hole through which the motor passes; support tight mechanism and include stopper, sliding block, gangbar, eccentric wheel and first rotation axis, the stopper install in it is right to be used for on the regulation seat the motor carries on spacingly, the sliding block with the stopper cooperation of sliding, the gangbar is close to the one end of sliding block with the sliding block rotates to be connected, the gangbar is kept away from the one end of sliding block with eccentric wheel fixed connection, first rotation axis fixed set up in the upper surface of rotary disk, first rotation axis passes the eccentric wheel, the eccentric wheel with first rotation axis rotates to be connected.

Through adopting above-mentioned technical scheme, the staff is through rotating the rotary disk, and a plurality of first rotation axises of rotary disk simultaneous drive are rotatory, and a plurality of first rotation axises drive a plurality of first eccentric wheels respectively rotatory to it is rotatory to drive a plurality of gangbars simultaneously, and then drives a plurality of sliding blocks simultaneously and slide, so that a plurality of eccentric wheels support the lateral wall of tight motor simultaneously, thereby realizes pressing from both sides tightly the motor.

Optionally, the eccentric wheel includes rotating part and support tight portion, first rotation axis passes through the rotating part, the rotating part with first rotation axis is rotated and is connected.

Through adopting above-mentioned technical scheme, support tight position in one side that the rotating part is close to the motor, when a plurality of rotating parts rotate around a plurality of first rotation axes respectively, be convenient for make a plurality of portions of supporting tightly support the lateral wall in the motor simultaneously to the realization is tight to the clamp of motor.

Optionally, a driving rod is fixedly arranged on the rotating disc.

Through adopting above-mentioned technical scheme, the staff rotates the rotary disk through rotating the actuating lever, has laborsaving effect.

Optionally, the driving rod is screwed with a second screw rod.

Through adopting above-mentioned technical scheme, the staff is through rotatory second screw rod, is convenient for adjust the tip of second screw rod to the distance of adjusting between the seat, and when the tip butt of second screw rod was on adjusting the seat, the second screw rod had the fixed action to the actuating lever with the frictional force of adjusting between the seat to the realization is to the fixed of rotary disk, and then realizes fixing the motor.

Optionally, a first knob is fixedly arranged on the anti-falling rod.

Through adopting above-mentioned technical scheme, the staff rotates anticreep pole through rotatory first rotation, has laborsaving effect.

Optionally, a connecting ring is fixedly arranged at one end of the first rotating shafts far away from the rotating disc.

By adopting the technical scheme, the connecting ring connects the free ends of the first rotating shafts together, so that the firmness of the installation of the first rotating shafts is improved.

Optionally, a bearing block is fixedly disposed on the first rotating shaft, and an upper surface of the bearing block abuts against a lower surface of the eccentric wheel.

By adopting the technical scheme, the connecting ring and the bearing block have a positioning effect on the eccentric wheel, and the rotating stability of the eccentric wheel is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the clamping device has a clamping effect on the motor, so that the convenience of installing and detaching the motor by workers is improved by fixing the motor on the adjusting seat; the rotating rod is rotatably connected with the base, one end of the rotating disk is fixed with the torque disk, in the process of testing the torque of the motor, a worker hangs a weight on the rotating disk, the rotating disk has a bearing effect on the weight, then the rotating rod is driven by the motor, the rotating disk is driven by the rotating rod to rotate, the torque disk and the weight of the weight are independently loaded, the torque of the motor is obtained through the weight of the weight and the radius of the torque disk, and further the torque of the motor is measured, and the accuracy of a measuring result can be improved by the measuring mode;

2. the first sliding groove has a guiding function on the first sliding part, so that the first sliding part can stably slide along the length direction of the first sliding groove; meanwhile, the first screw is in threaded fit with the first sliding piece, the first anti-falling rod and the first sliding piece have a clamping effect on the clamping piece, and the clamping piece and the first sliding piece have a clamping effect on the lifting plate, so that the clamping piece is fixed on the lifting plate; meanwhile, the clamping blocks have a clamping effect on the motor, so that the motor is fixed on the adjusting seat; meanwhile, workers can conveniently adjust the first sliding piece, the clamping piece and the connecting piece along the length direction of the first sliding groove, and convenience of installing and detaching the motor is improved for the workers;

3. spacing draw-in groove on a plurality of grip blocks has a limiting displacement to the fixed plate to on being fixed in the regulation seat with the fixed plate, increased the fastness of a plurality of grip block centre gripping fixed plates, thereby increased the fastness of motor installation.

Drawings

Fig. 1 is a schematic structural diagram of a load testing tool applied to a micro outer rotor brushless motor in embodiment 1 of the present application.

Fig. 2 is a half sectional view of another view angle of the load testing tool for the micro outer rotor brushless motor in embodiment 1 of the present application.

Fig. 3 is a schematic structural view of an adjusting seat in embodiment 1 of the present application.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5 is a partially enlarged view of a portion B in fig. 1.

Fig. 6 is a schematic structural diagram of a load testing tool suitable for a micro outer rotor brushless motor in embodiment 2 of the present application.

Fig. 7 is a partially enlarged view of a portion C in fig. 6.

Fig. 8 is a schematic structural view of a holding device in embodiment 2 of the present application.

Fig. 9 is a partially enlarged view of a portion D in fig. 8.

Fig. 10 is a partially enlarged view of a portion E in fig. 8.

Description of reference numerals:

1. a base; 11. a first base plate; 111. a guide groove; 12. a first support plate; 13. a first guide bar; 14. a third guide block; 15. a fixed part; 2. a supporting seat; 21. a second base plate; 22. a second support plate; 221. mounting grooves; 23. a fastener; 231. a second guide block; 232. a third screw; 233. a second anti-drop rod; 234. a lowering tank; 3. an adjusting seat; 31. a second glide; 311. a slide plate; 312. a first regulating block; 313. mounting a block; 314. a second guide bar; 32. a lifting member; 321. a lifting plate; 322. a second regulating block; 323. a first regulating groove; 324. a first sliding groove; 33. a first adjusting member; 331. a first adjusting screw; 332. a first adjustment knob; 34. a second adjustment member; 341. a second adjusting screw; 342. a second adjustment knob; 4. a clamping mechanism; 41. a first glide; 42. a clamping member; 421. a clamping block; 422. connecting blocks; 423. a first guide block; 424. a limiting clamping groove; 43. a connecting member; 431. a first screw; 432. a first anti-drop bar; 433. a first knob; 5. a drive mechanism; 51. rotating the disc; 52. a drive rod; 53. a second screw; 54. a second knob; 55. avoiding holes; 6. a tightening mechanism; 61. a limiting block; 611. a second sliding groove; 612. a stopper; 62. a sliding block; 63. a linkage rod; 64. an eccentric wheel; 641. a rotating part; 642. a tightening part; 65. a first rotating shaft; 651. a bearing block; 66. a connecting ring; 67. a second rotation shaft; 68. an anti-drop block; 69. a third regulating block; 691. a third regulating groove; 7. a motor; 71. a fixing plate; 8. a rotating member; 81. rotating the rod; 82. a moment disk.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

For convenience of understanding, in the horizontal direction in the present embodiment, a longitudinal direction of the rotating rod 81 is defined as a first direction, and a direction perpendicular to the longitudinal direction of the rotating rod 81 is defined as a second direction, on the basis of which the load test tool applied to the micro outer rotor brushless motor is described.

Example 1

The embodiment of the application discloses be applicable to miniature outer rotor brushless motor load test frock. Referring to fig. 1, the load test tool for the miniature outer rotor brushless motor comprises a base 1, a supporting seat 2, an adjusting seat 3, a clamping device, a motor 7 and a rotating piece 8.

Referring to fig. 1 and 2, the base 1 includes a first bottom plate 11 and a first supporting plate 12, the first bottom plate 11 is horizontally disposed, the first supporting plate 12 is vertically disposed, and the bottom end of the first supporting plate 12 is fixedly connected to the upper surface of the first bottom plate 11. The supporting seat 2 is arranged on the upper surface of the first bottom plate 11, the adjusting seat 3 is arranged on the supporting seat 2, and the clamping device is arranged on the adjusting seat 3. The adjusting seat 3 is used for adjusting the position of a clamping device, and the clamping device is used for clamping the motor 7. The rotating member 8 includes a rotating rod 81 and a torque disc 82, the rotating rod 81 extends along a first direction, the rotating rod 81 passes through the first support plate 12, and the rotating rod 81 is rotatably connected with the first support plate 12 through a bearing. One end of the rotating rod 81 is fixedly connected with the torque disc 82, and the output shaft of the motor 7 is fixedly connected with the other end of the rotating rod 81. Through hanging the weight on moment dish 82, then through motor 7 drive rotary rod 81, rotary rod 81 drives rotary disk 51 rotatory, lets moment dish 82 with the independent bearing of weight, through the weight of weight and the radius size of moment dish 82 to reach the moment of torsion of motor 7, and then realize the measurement to the motor 7 moment of torsion, this kind of measurement mode can make measuring result's precision obtain promoting.

Referring to fig. 1, the supporting seat 2 includes a second bottom plate 21 and a second supporting plate 22, the second bottom plate 21 is horizontally disposed, the second supporting plate 22 is vertically disposed, and a bottom end of the second supporting plate 22 is fixedly connected to an upper surface of the second bottom plate 21. The second base plate 21 is fixed to the upper surface of the first base plate 11 by fasteners 23.

Referring to fig. 2, specifically, the fastening member 23 includes a second guide block 231, the guide groove 111 is formed in the upper surface of the first base plate 11, one end of the guide groove 111, which is far away from the first support plate 12, is open, and the second guide block 231 is slidably matched with the guide groove 111. In this embodiment, the cross section of the second guide block 231 is T-shaped, the guide groove 111 is a T-shaped groove, and the guide groove 111 not only guides the second guide block 231, but also prevents the second guide block 231 from falling off. The fastener 23 further includes a third screw 232 and a second anti-slip rod 233, the bottom end of the second anti-slip rod 233 is fixedly connected to the top end of the third screw 232, and the top end of the second anti-slip rod 233 is fixed to the second knob 54. The surface of the second bottom plate 21 is provided with a descending groove 234 and an avoiding groove which are communicated with each other, the bottom end of the third screw 232 penetrates through the avoiding groove and is in threaded fit with the second guide block 231, and the bottom end of the second anti-falling rod 233 abuts against the bottom of the descending groove 234. The second retaining bar 233 and the first base plate 11 clamp the second base plate 21, thereby fixing the support base 2 to the base 1. The worker rotates the second anti-slip rod 233 by rotating the second knob 54, thereby driving the third screw 232 to rotate, which has a labor-saving effect.

Referring to fig. 1, the two sides of the upper surface of the first bottom plate 11 are provided with third guide blocks 14 for guiding the second bottom plate 21, the two third guide blocks 14 respectively abut against the two opposite sides of the second bottom plate 21, and the two third guide blocks 14 guide the second bottom plate 21. When the worker adjusts the position of the support base 2 toward a direction close to or away from the first support plate 12, the two third guide blocks 14 guide the second base plate 21, thereby increasing the stability of the sliding of the second base plate 21 in the first direction.

Referring to fig. 1 and 2, each third guide block 14 is integrally formed with a fixing portion 15, and a sidewall of each fixing portion 15 abuts against a sidewall of the first bottom plate 11. All wear to be equipped with two bolts on every fixed part 15, every bolt all with 11 screw-thread fit of first bottom plate, increased the convenience that the staff installed and dismantled third guide block 14.

Referring to fig. 2 and 3, the adjusting seat 3 includes a second sliding member 31, the second sliding member 31 includes a sliding plate 311 and two first adjusting blocks 312, and the two first adjusting blocks 312 are integrally formed on a side wall of the sliding plate 311 near the second support plate 22. The lateral wall of second backup pad 22 is seted up the mounting groove 221 that runs through, fixedly on the second backup pad 22 being provided with two first guide bars 13, and two first guide bars 13 all extend along the second direction, and two first guide bars 13 all are located inside mounting groove 221. The two first adjusting blocks 312 are located in the installation groove 221, the two first guide rods 13 simultaneously penetrate through the two first adjusting blocks 312, and the two first adjusting blocks 312 are in sliding fit with the two first guide rods 13. The two first guide rods 13 guide the two first adjusting blocks 312 to stably slide the two first adjusting blocks 312 in the second direction. The second sliding member 31 further includes two mounting blocks 313, the two mounting blocks 313 are integrally formed on the side wall of the sliding plate 311 facing away from the first adjusting block 312, and the two mounting blocks 313 are parallel to each other.

With continued reference to fig. 2 and 3, the second support plate 22 is provided with a first adjusting member 33 for adjusting the position of the second sliding member 31, the first adjusting member 33 includes a first adjusting screw 331 and a first adjusting knob 332, the first adjusting screw 331 extends along the second direction, the first adjusting knob 332 is fixed at one end of the first adjusting screw 331, which is far away from the first adjusting knob 332, passes through the side wall of the second support plate 22 and is located in the installation groove 221, the first adjusting screw 331 is in threaded fit with the second support plate 22, and one end of the first adjusting screw 331, which is located in the installation groove, is rotatably connected with one of the first adjusting blocks 312 through a bearing. By rotating the first adjusting knob 332, the worker rotates the first adjusting knob 332 to drive the first adjusting screw 331 to rotate, so as to adjust the position of the second sliding member 31 along the second direction.

Referring to fig. 3, the lifting member 32 includes a lifting plate 321 and two second adjusting blocks 322, and the two second adjusting blocks 322 are integrally formed on a side wall of the lifting plate 321 close to the second sliding member 31. Two second guide rods 314 are arranged between the two second adjusting blocks 322, and the two second guide rods 314 extend in the vertical direction. Two ends of each second guide rod 314 respectively penetrate through the two mounting blocks 313, and two ends of each second guide rod 314 are respectively fixedly connected with two ends of the two mounting blocks 313. The two second guide rods 314 simultaneously penetrate through the two second adjusting blocks 322, and the two second adjusting blocks 322 are in sliding fit with the two second guide rods 314. The two second guide rods 314 guide the two second adjusting blocks 322 to stably slide the two second adjusting blocks 322 in the vertical direction, so that the lifting member 32 is stably lifted.

Referring to fig. 3 and 4, a second adjusting part 34 for adjusting the height of the lifting part 32 is disposed on the mounting block 313 above the second adjusting part 34, the second adjusting part 34 includes a second adjusting screw 341 and a second adjusting knob 342, the second adjusting screw 341 extends in the vertical direction, the second adjusting knob 342 is fixed to the top end of the second adjusting screw 341, the bottom end of the second adjusting screw 341 passes through the mounting block 313 and is in threaded fit with the mounting block 313, and the bottom end of the second adjusting screw 341 is rotatably connected with one of the second adjusting blocks 322 through a bearing. By rotating the second adjusting knob 342, the second adjusting knob 342 drives the second adjusting screw 341 to rotate, so as to adjust the height of the second adjusting block 322.

Referring to fig. 4 and 5, the clamping device includes four clamping mechanisms 4, and each clamping mechanism 4 includes a first slide 41, a clamping member 42, and a connecting member 43. Four first sliding grooves 324 are formed in the second adjusting block 322, the four first sliding grooves 324 are uniformly distributed along the circumferential direction, and the four first sliding parts 41 are in sliding fit with the first sliding grooves 324 respectively. Specifically, the first sliding member 41 is shaped as a T-shaped block, and the first sliding groove 324 is a T-shaped groove. The stability of the first slide member 41 sliding in the first slide groove 324 is increased. The clamping member 42 includes a clamping block 421, a connecting block 422, and a first guide block 423, and the first guide block 423 is integrally formed on the connecting block 422 near a side wall of the lifting plate 321. The first guide block 423 is slidably engaged with the first sliding groove 324, and the connecting block 422 abuts against the surface of the lifting plate 321. The holding block 421 is integrally formed on the connecting block 422. Spacing draw-in groove 424 has been seted up on the grip block 421, and fixed plate 71 is fixed to be provided with on the motor 7, and the border of fixed plate 71 is located inside three of them spacing draw-in grooves 424. The connecting member 43 includes a first screw 431 and a first anti-slip rod 432, the first screw 431 penetrates through the clamping member 42, the first screw 431 is in threaded fit with the first sliding member 41, and the first anti-slip rod 432 abuts on the clamping member 42. The staff is convenient to adjust the distance between the end of the first screw 431 and the adjusting base 3 by rotating the first screw 431, and when the end of the first screw 431 abuts against the adjusting base 3, the friction force between the first screw 431 and the adjusting base 3 has a fixing effect on the driving rod 52, so that the rotating disc 51 is fixed, and further the motor 7 is fixed. The first anti-slip rod 432 is fixedly provided with a first knob 433. The worker rotates the anti-falling rod by rotating the first knob 433, so that the labor-saving effect is achieved

Example 2

Example 2 differs from example 1 in that:

referring to fig. 6 and 7, the clamping device in the present application includes a driving mechanism 5 and a tightening mechanism 6, and the tightening mechanism 6 is distributed on the adjusting seat 3 along a circumferential direction. In the embodiment, the number of the abutting mechanisms 6 is three, and the driving mechanism 5 is configured to drive the three abutting mechanisms 6 to abut against the motor 7 at the same time, so as to fix the motor 7 on the lifting member 32. It should be noted that the motor 7 is not provided with the fixing plate 71.

Referring to fig. 7, in the present embodiment, the driving mechanism 5 includes a rotary plate 51 rotatably provided on the lifting plate 321, the rotary plate 51 has a disk shape, and the rotary plate 51 is coaxial with the motor 7. The side wall of the rotating disc 51 is abutted against the side wall of the lifting plate 321, the center of the rotating disc 51 is provided with a clearance hole 55 for the motor 7 to pass through, and the inner side wall of the clearance hole 55 is abutted against the outer side wall of the motor 7.

With continued reference to fig. 7, each of the tightening mechanisms 6 includes a stopper 61, a slider 62, a linkage bar 63, an eccentric wheel 64, and a first rotating shaft 65. The arc wall has all been seted up to stopper 61's inside wall, and the equal butt of inside wall of arc wall is in the lateral wall of rotary disk 51. The setting of arc wall has increased the area of contact between stopper 61's the inside wall and the motor lateral wall, and three stopper 61 has the positioning action to rotary disk 51, has increased the rotatory stability of rotary disk 51. The stopper 61 is shaped like a rectangular parallelepiped, and a sidewall of the stopper 61 abuts against a sidewall of the lifting plate 321. The side wall of the limiting block 61 departing from the lifting plate 321 is provided with a second sliding groove 611, the sliding block 62 is located inside the second sliding groove 611, and the sliding block 62 is movably matched with the second sliding groove 611. One end of the linkage rod 63, which is close to the sliding block 62, is rotatably connected with the sliding block 62, and one end of the linkage rod 63, which is far from the sliding block 62, is integrally formed with the eccentric wheel 64. The first rotating shaft 65 extends in a first direction, one end of the first rotating shaft 65 is fixedly connected to the rotating plate 51, the other end of the first rotating shaft 65 passes through the eccentric 64, and the eccentric 64 is rotatably connected to the first rotating shaft 65.

With continued reference to fig. 7, the sliding block 62 is a dovetail block and the second sliding slot 611 is a dovetail slot, thereby increasing the stability of the sliding block 62 sliding within the second sliding slot 611. Two opposite side walls of the limiting block 61 are welded with stop blocks 612 for limiting the sliding stroke of the sliding block 62. So configured, the stopper 612 can limit the sliding block 62 from sliding out of the second sliding groove 611.

Referring to fig. 8 and 9, the eccentric wheel 64 includes a rotating portion 641 and a fastening portion 642, the rotating portion 641 is shaped as a cylinder, and the fastening portion 642 is integrally formed on one side of the rotating portion 641 close to the lifting plate 321. The abutting portions 642 are located on a side of the rotating portion 641 close to the motor 7, and when the rotating portions 641 rotate around the first rotating shafts 65, the abutting portions 642 are abutted to the side wall of the motor 7 at the same time, so as to clamp the motor 7.

Referring to fig. 7, the side wall of the limiting block 61 departing from the motor 7 is integrally formed with a third adjusting block 69, the side wall of the third adjusting block 69 abuts against the side wall of the lifting member 32, two third adjusting grooves 691 are formed in the third adjusting block 69, and a bolt is arranged in each third adjusting groove 691 in a penetrating manner. It should be noted that the length direction of each third adjusting groove 691 is perpendicular to the side wall of the limiting block 61, so that the worker can conveniently release the fixing effect of the bolt on the third adjusting block 69 and adjust the position of the limiting block 61 towards the direction close to or far away from the motor 7, thereby being convenient for clamping the motors 7 with different sizes.

With continued reference to fig. 7, the ends of the three first rotating shafts 65 remote from the rotating disk 51 are fixedly provided with connecting rings 66, and the connecting rings 66 connect the three first rotating shafts 65 together while increasing the stability of the mounting of the three first rotating shafts 65. Meanwhile, a bearing block 651 is integrally formed on each first rotating shaft 65, and a side wall of the bearing block 651 abuts against a side wall of the eccentric wheel 64 facing away from the connecting ring 66. The connecting ring 66 and the bearing block 651 have a positioning effect on the eccentric 64, and the rotation stability of the eccentric 64 is increased.

Referring to fig. 8 and 10, a second rotating shaft 67 is welded on the upper surface of the sliding block 62, the length direction of the second rotating shaft 67 is vertical, the second rotating shaft 67 penetrates through one end of the linkage rod 63 close to the sliding block 62, an anti-falling block 68 is welded at the top end of the second rotating shaft 67, the anti-falling block 68 is cylindrical, and the side wall of the anti-falling block 68 abuts against the side wall of the linkage rod 63. The anti-falling block 68 and the sliding block 62 have a clamping effect on the linkage rod 63, and the rotation stability of the linkage rod 63 is improved.

Referring to fig. 7, a driving lever 52 is integrally formed on the rotary plate 51, and the worker rotates the rotary plate 51 by rotating the driving lever 52, thereby saving labor. A second screw 53 is screwed on the driving rod 52, and a second knob 54 is fixedly arranged on the second screw 53. The staff rotates the second screw 53 by rotating the second knob 54, so as to adjust the distance between the end of the second screw 53 and the lifting plate 321, and when the end of the second screw 53 abuts against the lifting plate 321, the friction force between the second screw 53 and the lifting plate 321 fixes the driving rod 52, thereby fixing the rotating disc 51 and further fixing the motor 7.

The implementation principle of the above embodiment is as follows: the clamping device has a clamping effect on the motor 7, so that the motor 7 is fixed on the adjusting seat 3, and convenience for workers to install and dismantle the motor 7 is improved; because rotary rod 81 rotates with base 1 to be connected, the one end of rotary disk 51 is fixed with moment dish 82, at the in-process of test motor 7 moment of torsion, the staff hangs the weight on rotary disk 51, rotary disk 51 has the bearing effect to the weight, then drive rotary rod 81 through motor 7, rotary rod 81 drives rotary disk 51 rotatory, let moment dish 82 with the independent bearing of weight, weight and the radius size of moment dish 82 through the weight, thereby reach the moment of torsion of motor 7, and then realize the measurement to the motor 7 moment of torsion, this kind of measuring method can make measuring result's precision obtain promoting.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a be applicable to miniature outer rotor brushless motor load test frock which characterized in that: comprises a base (1), a supporting seat (2), an adjusting seat (3), a clamping device, a motor (7) and a rotating piece (8); the supporting seat (2) is arranged on the base (1), and the adjusting seat (3) is arranged on the supporting seat (2); the clamping device is arranged on the adjusting seat (3), the clamping device is used for clamping the motor (7), and the adjusting seat (3) is used for adjusting the position of the clamping device; the rotating element (8) comprises a rotating rod (81) and a torque disc (82), and the rotating rod (81) penetrates through the base (1) and is rotationally connected with the base (1); one end of the rotating rod (81) is fixedly connected with the torque disc (82), and the output shaft of the motor (7) is fixedly connected with the other end of the rotating rod (81).

2. The load testing tool applicable to the miniature outer rotor brushless motor according to claim 1, is characterized in that: the clamping device comprises a plurality of clamping mechanisms (4), and a plurality of first sliding grooves (324) are formed in the adjusting seat (3); each clamping mechanism (4) comprises a first sliding piece (41), a clamping piece (42) and a connecting piece (43); the first sliding piece (41) is in sliding fit with the first sliding groove (324); the clamping piece (42) comprises a clamping block (421), a connecting block (422) and a first guide block (423) which are fixedly connected, the first guide block (423) is matched with the first sliding groove (324) in a sliding mode, the connecting block (422) abuts against the adjusting seat (3), and the clamping block (421) is used for clamping the motor (7); the connecting piece (43) comprises a first screw rod (431) and a first anti-falling rod (432) which are fixedly connected, the first screw rod (431) penetrates through the clamping piece (42), the first screw rod (431) is in threaded fit with the first sliding piece (41), and the first anti-falling rod (432) abuts on the clamping piece (42).

3. The load testing tool suitable for the miniature outer rotor brushless motor according to claim 2, is characterized in that: spacing draw-in groove (424) have been seted up on grip block (421), fixed plate (71) of being provided with on motor (7), the border of fixed plate (71) is located inside spacing draw-in groove (424).

4. The load testing tool applicable to the miniature outer rotor brushless motor according to claim 1, characterized in that: the clamping device comprises a driving mechanism (5) and a plurality of abutting mechanisms (6), the abutting mechanisms (6) are distributed on the adjusting seat (3) along the circumferential direction, and the driving mechanism (5) is used for driving the abutting mechanisms (6) to abut against the motor (7) at the same time;

the driving mechanism (5) comprises a rotating disc (51) which is rotatably arranged on the adjusting seat (3), and the rotating disc (51) is provided with an avoiding hole (55) through which the motor (7) passes; the abutting mechanism (6) comprises a limiting block (61), a sliding block (62), a linkage rod (63), an eccentric wheel (64) and a first rotating shaft (65), the limiting block (61) is installed on the adjusting seat (3) and used for limiting the motor (7), the sliding block (62) is matched with the limiting block (61) in a sliding mode, one end, close to the sliding block (62), of the linkage rod (63) is connected with the sliding block (62) in a rotating mode, one end, far away from the sliding block (62), of the linkage rod (63) is fixedly connected with the eccentric wheel (64), the first rotating shaft (65) is fixedly arranged on the upper surface of the rotating disc (51), the first rotating shaft (65) penetrates through the eccentric wheel (64), and the eccentric wheel (64) is connected with the first rotating shaft (65) in a rotating mode.

5. The load testing tool suitable for the miniature outer rotor brushless motor according to claim 4, wherein: the eccentric wheel (64) comprises a rotating part (641) and a butting part (642), the first rotating shaft (65) penetrates through the rotating part (641), and the rotating part (641) is rotatably connected with the first rotating shaft (65).

6. The load testing tool suitable for the miniature outer rotor brushless motor according to claim 4, wherein: the rotating disc (51) is fixedly provided with a driving rod (52).

7. The load testing tool applicable to the miniature outer rotor brushless motor according to claim 6, characterized in that: and a second screw rod (53) is in threaded fit with the driving rod (52).

8. The load testing tool applicable to the miniature outer rotor brushless motor according to claim 2, characterized in that: a first knob (433) is fixedly arranged on the first anti-falling rod (432).

9. The load testing tool suitable for the miniature outer rotor brushless motor according to claim 4, wherein: one end of each of the first rotating shafts (65), which is far away from the rotating disc (51), is fixedly provided with a connecting ring (66), and a bearing block (651) is fixedly arranged on each first rotating shaft (65).

10. The load testing tool applicable to the miniature outer rotor brushless motor according to claim 9, is characterized in that: the upper surface of the bearing block (651) abuts against the lower surface of the eccentric wheel (64).