CN220252025U - Motor counter electromotive force test fixture - Google Patents

Abstract

The utility model relates to the technical field of motor testing, in particular to a motor back electromotive force testing tool, which comprises an upright post, a linear module, a rotary clamping assembly and a detection assembly, wherein the upright post is arranged on a workbench; the motor back electromotive force testing tool is simple in structural design, convenient to dock and high in automation degree.

Description

Motor counter electromotive force test fixture

Technical Field

The utility model relates to the technical field of motor testing, in particular to a motor back electromotive force testing tool.

Background

The counter electromotive force refers to an electromotive force generated against a tendency of a current to change. The production of the motor must be tested for back emf so that the motor performance is reflected in a parameterized manner to determine the motor performance.

At present, the counter potential testing device mainly adopts a coupler to butt-joint a tested motor with the testing device, and then the coupler drives the tested motor to rotate, so that a testing result is obtained. By adopting the design, before each test, the coupler and the rotor shaft of the tested motor are manually locked by the screw, so that the fixed connection of the coupler and the rotor shaft is realized, the butt joint step is complicated, the time and the labor are consumed, and the test efficiency is seriously affected.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides a motor back electromotive force test fixture with simple structural design, simple and convenient butt joint and high automation degree.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a motor back electromotive force test fixture, includes the stand of installing on the workstation, still includes sharp module, rotatory clamping assembly and detection component, the vertical top of installing at the stand of sharp module for drive rotatory clamping assembly goes up and down, rotatory clamping assembly includes mounting panel, rotatory group and clamping group, the mounting panel is installed on the slider of sharp module, rotatory group installs the top at the mounting panel for rotate the clamping group, the bottom at the mounting panel is installed to the clamping group, is used for clieing the rotor shaft on the motor, detection component is connected with the motor electricity, is used for acquireing and shows the testing result.

Further, the rotating group comprises a rotating motor, a first coupler and a rotating column, a shell of the rotating motor is arranged at the top end of the supporting plate, the output end of the rotating motor is vertically downwards arranged, the output end of the rotating motor is connected with the rotating column through the first coupler, and the bottom end of the rotating column is connected with the clamping group.

Further, the mounting plate includes support, upper junction plate and lower connecting plate, the support is connected with the slider of sharp module, upper junction plate horizontal installation is on the top of support, lower connecting plate horizontal installation is in the bottom of support, the casing of rotating electrical machines is installed on the upper junction plate, install the supporting seat on the lower connecting plate, the column spinner runs through the supporting seat, and with supporting seat normal running fit.

Further, the clamping group comprises a clamping cylinder, a push plate, a thrust bearing, a conical column and a clamping piece, wherein the cylinder body of the clamping cylinder is arranged at one end of the lower connecting plate, which is far away from the support, and the output end of the clamping cylinder is vertically downwards arranged, the push plate is arranged at the output end of the clamping cylinder and horizontally arranged, the thrust bearing is arranged at the end part of the push plate, which is far away from the clamping cylinder, and the conical column is arranged at the bottom end of the thrust bearing, the clamping piece is arranged at the bottom end of the rotating column in a movable sleeve manner.

Further, the holder includes the clamp palm, presss from both sides and indicate, spring and pivot, the lateral wall of clamp palm is along three finger grooves of circumference equipartition, the finger groove is offered along the axial of clamp palm leads to the length, press from both sides and indicate to set up in the finger groove, and its upper and lower both ends stretch out the finger groove respectively, press from both sides and indicate and have the clearance between the tank bottom of finger groove, the pivot runs through the middle part of pressing from both sides the finger, and with press from both sides and indicate normal running fit, the both ends of pivot are connected with the lateral wall of finger groove respectively, the spring sets up between pressing from both sides the tank bottom of indicating and finger groove, and be located the below of pivot, the one end and the clamp of spring indicate the butt, the other end and the tank bottom butt of finger groove, the bottom of toper post is formed with the conical surface, the top of pressing from both sides the finger is equipped with the inclined plane with conical surface looks adaptation.

Further, a soft rubber block is arranged at the bottom end of the clamping finger, an arc-shaped groove is formed in the end portion, close to the rotor shaft, of the soft rubber block, and the arc-shaped groove is matched with the rotor shaft.

Further, the straight line module includes module frame, servo motor, second coupling, lead screw, nut and slider, the top at the stand is installed to the module frame, servo motor's casing is installed on the top of module frame, and its output is vertical to set up downwards, servo motor's output passes through the second coupling and is connected with the lead screw, the lead screw is rotated and is installed on the module frame, the lead screw runs through the nut, and with nut screw-thread fit, nut and module frame sliding connection, the slider is connected with the nut.

Further, groove-type photoelectricity is installed respectively to top and bottom of module frame one side, be equipped with the response piece on the slider.

Further, the detection assembly comprises a detector and a signal wire, and the detector is electrically connected with the motor through the signal wire.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the linear module drives the rotary clamping assembly to descend to the test height, then the clamping assembly automatically clamps the rotor shaft of the motor, the rotary assembly drives the clamping assembly to synchronously drive the rotor shaft to rotate, and finally the detection assembly obtains and displays the detection result, so that the butt joint is simple and convenient, and the test efficiency is remarkably improved;

(2) According to the utility model, through the arrangement of the soft rubber block, the clamping fingers are prevented from damaging the rotor shaft, and the clamping force of the clamping fingers on the rotor shaft is improved by combining the arrangement of the arc-shaped grooves, so that the synchronous rotation of the rotating group and the rotor shaft is ensured, and the accuracy of a test result is ensured;

(3) According to the utility model, through the matching arrangement of the groove type photoelectric and the induction piece, the lifting height of the linear module driving rotary clamping assembly is adjustable, so that the test of motors with different heights is realized, and the compatibility is high.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a linear module according to the present utility model;

FIG. 3 is a schematic view of a rotary clamping assembly according to the present utility model;

fig. 4 is a schematic structural view of a clamping set in the present utility model.

In the figure: 1. a column; 2. a linear module; 2a, a module frame; 2b, a servo motor; 2c, a second coupling; 2d, a screw rod; 2e, nuts; 2f, sliding blocks; 3. a rotary clamping assembly; 3a, a support plate; 3a1, a bracket; 3a2, an upper connecting plate; 3a3, a lower connecting plate; 3b, rotating group; 3b1, a rotating electrical machine; 3b2, a first coupling; 3b3, spin columns; 3c, clamping groups; 3c1, clamping cylinder; 3c2, pushing plate; 3c3, thrust bearings; 3c4, tapered posts; 3c5, clamping piece; the clip palm 3c 51; finger 3c 52; springs 3c 53; a rotation shaft 3c 54; 4. a detection assembly; 5. a support base; 6. finger grooves; 7. a gap; 8. a conical surface; 9. an inclined plane; 10. soft rubber blocks; 11. an arc-shaped groove; 12. groove type photoelectricity; 13. and (5) an induction piece.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1 and 3, a motor counter electromotive force test fixture comprises an upright post 1 installed on a workbench, and further comprises a linear module 2, a rotary clamping assembly 3 and a detection assembly 4, wherein the linear module 2 is vertically installed at the top end of the upright post 1 and used for driving the rotary clamping assembly 3 to lift, the rotary clamping assembly 3 comprises a support plate 3a, a rotary group 3b and a clamping group 3c, the support plate 3a is installed on a sliding block 2f of the linear module 2, the rotary group 3b is installed at the top end of the support plate 3a and used for rotating the clamping group 3c, the clamping group 3c is installed at the bottom end of the support plate 3a and used for clamping a rotor shaft on a motor, and the detection assembly 4 is electrically connected with the motor and used for acquiring and displaying detection results. The rotary clamping assembly 3 is driven to descend to the test height through the linear module 2, then the clamping group 3c automatically clamps the rotor shaft of the motor, the rotating group 3b drives the clamping group 3c to synchronously drive the rotor shaft to rotate, and finally the detection assembly 4 obtains and displays the detection result, so that the butt joint is simple and convenient, and the test efficiency is remarkably improved.

As shown in fig. 3, the rotating group 3b includes a rotating motor 3b1, a first coupling 3b2, and a rotating column 3b3, the housing of the rotating motor 3b1 is mounted on the top end of the support plate 3a, and the output end thereof is vertically downward disposed, the output end of the rotating motor 3b1 is connected with the rotating column 3b3 through the first coupling 3b2, and the bottom end of the rotating column 3b3 is connected with the clamping group 3 c. After the clamping group 3c clamps the rotor shaft of the motor, the rotating motor 3b1 drives the rotating column 3b3 to rotate through the first coupling 3b2, and then the clamping group 3c is synchronously driven to rotate.

As shown in fig. 3, the support plate 3a includes a support 3a1, an upper connection plate 3a2 and a lower connection plate 3a3, the support 3a1 is connected with a slider 2f of the linear module 2, the upper connection plate 3a2 is horizontally installed at the top end of the support 3a1, the lower connection plate 3a3 is horizontally installed at the bottom end of the support 3a1, a housing of the rotating motor 3b1 is installed on the upper connection plate 3a2, a support seat 5 is installed on the lower connection plate 3a3, and the rotating column 3b3 penetrates through the support seat 5 and is in running fit with the support seat 5. Through the setting of supporting seat 5, guarantee the steady rotation of column spinner 3b3, the setting of cooperation first shaft coupling 3b2 simultaneously realizes the two-point location of column spinner 3b3, avoids column spinner 3b3 to appear the skew to guaranteed column spinner 3b3 and clamping set 3 c's axiality.

As shown in fig. 3, the clamping group 3c includes a clamping cylinder 3c1, a push plate 3c2, a thrust bearing 3c3, a tapered column 3c4 and a clamping member 3c5, the cylinder body of the clamping cylinder 3c1 is mounted at one end of the lower connecting plate 3a3 far away from the bracket 3a1, and the output end thereof is vertically downward, the push plate 3c2 is mounted at the output end of the clamping cylinder 3c1, and horizontally arranged, the thrust bearing 3c3 is mounted at the end of the push plate 3c2 far away from the clamping cylinder 3c1, and movably sleeved on the rotating column 3b3, the tapered column 3c4 is mounted at the bottom end of the thrust bearing 3c3, and movably sleeved on the rotating column 3b3, and the clamping member 3c5 is mounted at the bottom end of the rotating column 3b 3. During clamping, the clamping cylinder 3c1 drives the push plate 3c2 to descend, the push plate 3c2 descends to drive the thrust bearing 3c3 to move downwards along the rotary column 3b3, and then the conical column 3c4 is synchronously driven to move downwards along the rotary column 3b3, and the clamping piece 3c5 is enabled to clamp the rotor shaft of the motor by the downwards movement of the conical column 3c 4.

As shown in fig. 4, the clamping piece 3c5 includes a clamping palm 3c51, a clamping finger 3c52, a spring 3c53 and a rotating shaft 3c54, wherein three finger grooves 6 are uniformly distributed on the side wall of the clamping palm 3c51 along the circumferential direction, the finger grooves 6 are formed along the axial direction of the clamping palm 3c51, the clamping finger 3c52 is arranged in the finger groove 6, the upper end and the lower end of the clamping finger are respectively extended out of the finger groove 6, a gap 7 exists between the clamping finger 3c52 and the groove bottom of the finger groove 6, the rotating shaft 3c54 penetrates through the middle part of the clamping finger 3c52 and is in running fit with the clamping finger 3c52, two ends of the rotating shaft 3c54 are respectively connected with the side wall of the finger groove 6, the spring 3c53 is arranged between the clamping finger 3c52 and the groove bottom of the finger groove 6 and is positioned below the rotating shaft 3c54, one end of the spring 3c53 is in butt joint with the clamping finger 3c52, the other end is in butt joint with the groove bottom of the finger groove 6, the bottom of the conical column 3c4 is formed with a conical surface 8, and the top end of the clamping finger 3c52 is provided with a bevel 9 matched with the conical surface 8. Specifically, the number of the clamping fingers 3c52 is three. During clamping, the conical column 3c4 moves downwards, the conical surface 8 is abutted against the inclined surface 9 in the downward moving process, the top ends of the three clamping fingers 3c52 are pushed to synchronously expand outwards, the clamping fingers 3c52 rotate by taking the rotating shaft 3c54 as a pivot, the bottom ends of the three clamping fingers 3c52 synchronously shrink inwards, the spring 3c53 is compressed, and the clamping is completed until the bottom ends of the three clamping fingers 3c52 simultaneously contact with a rotor shaft of a motor. The bottom ends of the three clamping fingers 3c52 are synchronously retracted, so that the coaxiality of the rotor shaft of the motor and the rotating column 3b3 is ensured; when the three clamping fingers 3c52 are loosened, the conical column 3c4 moves upwards, the conical surface 8 is not contacted with the inclined surface 9 any more, and the bottom ends of the three clamping fingers 3c52 are pushed by the springs 3c53 to expand synchronously. Specifically, the groove width of the finger groove 6 is slightly larger than the width of the clip finger 3c 52.

As shown in fig. 4, the bottom end of the clamping finger 3c52 is provided with a soft rubber block 10, the end of the soft rubber block 10 close to the rotor shaft is provided with an arc-shaped groove 11, and the arc-shaped groove 11 is matched with the rotor shaft. Through the setting of soft rubber block 10, avoid pressing from both sides finger 3c52 to hurt the rotor shaft, combine the setting of arc recess 11, improved the clamping force of pressing from both sides finger 3c52 to the rotor shaft, guaranteed the synchronous rotation of rotatory group 3b and rotor shaft to the accuracy of test result has been guaranteed.

As shown in fig. 2, the linear module 2 includes a module frame 2a, a servo motor 2b, a second coupling 2c, a screw rod 2d, a nut 2e and a slider 2f, the module frame 2a is mounted at the top end of the upright 1, a housing of the servo motor 2b is mounted at the top end of the module frame 2a, and an output end of the servo motor 2b is vertically downward, the output end of the servo motor 2b is connected with the screw rod 2d through the second coupling 2c, the screw rod 2d is rotatably mounted on the module frame 2a, the screw rod 2d penetrates the nut 2e and is in threaded engagement with the nut 2e, the nut 2e is slidably connected with the module frame 2a, and the slider 2f is connected with the nut 2 e.

As shown in fig. 2, the top and bottom ends of the module frame 2a are respectively provided with a groove type photoelectric device 12, and the slider 2f is provided with a sensing piece 13. Through the cooperation setting of groove type photoelectricity 12 and response piece 13 for the rotatory clamping assembly 3 of straight line module 2 drive goes up and down highly adjustable, thereby realizes testing the motor that is not coaxial height, and the compatibility is high. When adjusting, only the installation position of the groove type photoelectric device 12 on the module frame 2a needs to be changed.

As shown in fig. 1, the detecting assembly 4 includes a detector and a signal line, and the detector is electrically connected to the motor through the signal line. The detector obtains the detection result of the motor through the signal wire, and the detection result is displayed through a display screen on the detector.

During operation, the motor moves to a testing position, the linear module 2 drives the rotary clamping assembly 3 to descend to a testing height, then the clamping group 3c automatically clamps a rotor shaft of the motor, the rotary group 3b drives the clamping group 3c to synchronously drive the rotor shaft to rotate, and finally the detection assembly 4 obtains and displays a detection result. The tool is suitable for being applied to motor production lines, and the test time and the rotating speed of the rotating group 3b can be freely set according to test requirements.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (9)

1. The utility model provides a motor back electromotive force test fixture, includes stand (1) of installing on the workstation, its characterized in that: still include sharp module (2), rotatory clamping assembly (3) and detection subassembly (4), the top at stand (1) is vertically installed to sharp module (2) for drive rotatory clamping assembly (3) go up and down, rotatory clamping assembly (3) are including mounting panel (3 a), rotatory group (3 b) and centre gripping group (3 c), mounting panel (3 a) are installed on slider (2 f) of sharp module (2), rotatory group (3 b) are installed on the top of mounting panel (3 a), are used for rotating centre gripping group (3 c), the bottom at mounting panel (3 a) is installed to centre gripping group (3 c) for the rotor shaft on the centre gripping motor, detection subassembly (4) are connected with the motor electricity, are used for acquireing and show the testing result.

2. The motor back emf test fixture of claim 1, wherein: the rotating group (3 b) comprises a rotating motor (3 b 1), a first coupler (3 b 2) and a rotating column (3 b 3), wherein a shell of the rotating motor (3 b 1) is arranged at the top end of a support plate (3 a), the output end of the rotating motor (3 b 1) is vertically downwards arranged, the output end of the rotating motor is connected with the rotating column (3 b 3) through the first coupler (3 b 2), and the bottom end of the rotating column (3 b 3) is connected with a clamping group (3 c).

3. The motor back emf test fixture of claim 2, wherein: the support plate (3 a) comprises a support (3 a 1), an upper connecting plate (3 a 2) and a lower connecting plate (3 a 3), the support (3 a 1) is connected with a sliding block (2 f) of the linear module (2), the upper connecting plate (3 a 2) is horizontally arranged at the top end of the support (3 a 1), the lower connecting plate (3 a 3) is horizontally arranged at the bottom end of the support (3 a 1), a shell of the rotating motor (3 b 1) is arranged on the upper connecting plate (3 a 2), a supporting seat (5) is arranged on the lower connecting plate (3 a 3), and the rotating column (3 b 3) penetrates through the supporting seat (5) and is in running fit with the supporting seat (5).

4. A motor back emf test fixture according to claim 2 or 3, wherein: clamping group (3 c) are including pressing from both sides tight cylinder (3 c 1), push pedal (3 c 2), thrust bearing (3 c 3), toper post (3 c 4) and holder (3 c 5), the cylinder body that presss from both sides tight cylinder (3 c 1) is installed and is kept away from the one end of support (3 a 1) in lower connecting plate (3 a 3), and its output is vertical to set up downwards, the output at pressing from both sides tight cylinder (3 c 1) is installed in push pedal (3 c 2), and the level sets up, thrust bearing (3 c 3) are installed and are kept away from the tip that presss from both sides tight cylinder (3 c 1) in push pedal (3 c 2), and the swing cover is located column (3 b 3), the bottom at thrust bearing (3 c 3) is installed to toper post (3 c 4), and the swing cover is located column (3 b 3), the bottom at column (3 b 3) is installed to holder (3 c 5).

5. The motor back emf test fixture of claim 4, wherein: the clamping piece (3 c 5) comprises a clamping palm (3 c 51), clamping fingers (3 c 52), a spring (3 c 53) and a rotating shaft (3 c 54), three finger grooves (6) are uniformly distributed on the side wall of the clamping palm (3 c 51) along the circumferential direction, the finger grooves (6) are formed along the axial through length of the clamping palm (3 c 51), the clamping fingers (3 c 52) are arranged in the finger grooves (6), the upper ends and the lower ends of the clamping fingers extend out of the finger grooves (6) respectively, a gap (7) exists between the clamping fingers (3 c 52) and the bottom of the finger grooves (6), the rotating shaft (3 c 54) penetrates through the middle part of the clamping fingers (3 c 52), and with press from both sides finger (3 c 52) normal running fit, the both ends of pivot (3 c 54) are connected with the lateral wall of finger groove (6) respectively, spring (3 c 53) set up between the tank bottom of pressing from both sides finger (3 c 52) and finger groove (6), and be located the below of pivot (3 c 54), the one end and the tank bottom butt of pressing from both sides finger (3 c 52) of spring (3 c 53), the other end and finger groove (6) tank bottom butt, the bottom of toper post (3 c 4) is formed with conical surface (8), the top that presss from both sides finger (3 c 52) is equipped with inclined plane (9) with conical surface (8) looks adaptation.

6. The motor back emf test fixture of claim 5, wherein: the bottom of the clamping finger (3 c 52) is provided with a soft rubber block (10), the end part of the soft rubber block (10) close to the rotor shaft is provided with an arc-shaped groove (11), and the arc-shaped groove (11) is matched with the rotor shaft.

7. A motor back emf test fixture according to claim 3, wherein: the linear module (2) comprises a module frame (2 a), a servo motor (2 b), a second coupler (2 c), a screw rod (2 d), a nut (2 e) and a sliding block (2 f), wherein the module frame (2 a) is arranged at the top end of the upright post (1), a shell of the servo motor (2 b) is arranged at the top end of the module frame (2 a) and the output end of the servo motor is vertically downwards arranged, the output end of the servo motor (2 b) is connected with the screw rod (2 d) through the second coupler (2 c), the screw rod (2 d) is rotatably arranged on the module frame (2 a), the screw rod (2 d) penetrates through the nut (2 e) and is in threaded fit with the nut (2 e), the nut (2 e) is in sliding connection with the module frame (2 a), and the sliding block (2 f) is connected with the nut (2 e).

8. The motor back emf test fixture of claim 7, wherein: the top and the bottom of one side of the module frame (2 a) are respectively provided with a groove-type photoelectric device (12), and the slide block (2 f) is provided with an induction piece (13).

9. The motor back emf test fixture of claim 1, wherein: the detection assembly (4) comprises a detector and a signal wire, and the detector is electrically connected with the motor through the signal wire.