阅读说明：本技术 一种基于电机转子转速的辅助传感测试装置 (Auxiliary sensing testing device based on motor rotor rotating speed ) 是由 李垣江 徐松 李可礼 魏海峰 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种基于电机转子转速的辅助传感测试装置,涉及电机测速装置技术领域,解决了现有的电机转子测速装置,需额外手动操作动力传递部件对测速器与测试电机进行动力传递连接,操作流程较为繁琐,且费事费力的问题。一种基于电机转子转速的辅助传感测试装置,包括作台；所述工作台包括螺纹轴,所述工作台整体呈矩形结构,且后半部分的顶端呈左右对称转动安装有两处螺纹轴,此两处螺纹轴上啮合套装有两处L状卡板,且电机夹紧卡装于两处L状卡板之间,工作台前半部分的顶端呈左右对称焊接有两处定位轴。本发明能够省去额外手动操作卡紧连轴器等动力传递部件的麻烦,简化了测试系统整体的测速步骤,使用方便快捷省力。(The invention discloses an auxiliary sensing test device based on the rotating speed of a motor rotor, relates to the technical field of motor speed measuring devices, and solves the problems that an existing motor rotor speed measuring device needs to be additionally and manually operated to carry out power transmission connection between a speed measurer and a test motor, the operation process is complicated, and trouble and labor are wasted. An auxiliary sensing test device based on the rotating speed of a motor rotor comprises a workbench; the workstation includes the screw shaft, the workstation is whole to be the rectangle structure, and the top of latter half is bilateral symmetry and rotates and install two screw shafts, and two L form cardboards are equipped with to the epaxial meshing cover of these two screw shafts, and the motor presss from both sides the clamp and clamps between two L form cardboards, and the top of workstation first half is bilateral symmetry welding and has two location axles. The invention can save the trouble of clamping power transmission parts such as a coupling and the like by additional manual operation, simplifies the speed measurement step of the whole test system, and is convenient, rapid and labor-saving to use.)

1. The utility model provides an auxiliary sensing testing arrangement based on electric motor rotor rotational speed which characterized in that: a test device comprising

A work table; the workbench comprises a threaded shaft, L-shaped clamping plates and positioning shafts, the workbench is integrally of a rectangular structure, two threaded shafts are arranged at the top end of the rear half part in a bilaterally symmetrical rotating mode, the two L-shaped clamping plates are arranged on the two threaded shafts in a meshing and sleeving mode, the motor is clamped and clamped between the two L-shaped clamping plates, the two positioning shafts are welded at the top end of the front half part of the workbench in a bilaterally symmetrical mode, and a vertical rectangular positioning frame is sleeved on the two positioning shafts in a sliding mode;

a rectangular positioning frame; the rectangular positioning frame comprises a mounting piece, a prescription-shaped mounting piece is slidably mounted on a left vertical supporting shaft and a right vertical supporting shaft of the rectangular positioning frame, a forward-supported rotary velometer is locked on the mounting piece, and a liquid crystal screen is embedded and mounted on the outer side shell wall of the rotary velometer;

the head end of the rotating shaft of the rotary velometer is connected with a driving sleeve in a locking way, and four clamping mechanisms are inserted on the circumferential outer wall of the driving sleeve in a surrounding and penetrating way.

2. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 1, wherein: the workstation still includes hand lead screw, the intermediate position of the outer eaves of workstation rear side supports the welding and has a location otic placode, and the hand lead screw of a department is worn to be equipped with in the meshing on this location otic placode, and the head end of hand lead screw and the bottom of rectangle locating frame prop even the board through-rotation and be connected.

3. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 1, wherein: the motor comprises a rotating shaft, the rotating shaft of the motor is correspondingly and alternately matched with the center of the driving sleeve, and two mounting seat plates at the bottom of the motor are correspondingly matched with two L-shaped clamping plates in a clamping manner.

4. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 1, wherein: the rectangle locating frame is whole to prop even board and control two department and erect the vaulting axle and weld jointly by upper and lower two places and constitute, and the installed part main part is a square frame, is bilateral symmetry on this square frame and supports the welding and have two sliding sleeves, these two sliding sleeves correspond with the rectangle locating frame erect axle sliding fit about, and threaded engagement has two plum blossom bolts on two sliding sleeves.

5. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 1, wherein: the driving sleeve comprises

The annular end surface on the front side of the driving sleeve is symmetrically supported and welded with four force transmission shafts;

the tail ends of the four force transmission shafts are fixedly welded with a driving ring, and a central circular plate of the driving ring is in locking connection with a rotating shaft of the rotary velometer.

6. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 5, wherein: the driving sleeve further comprises a cross positioning frame, the root section of the force transmission shaft at four positions is sleeved with the cross positioning frame in a sliding mode, and a small-diameter top ring is arranged at the center of the cross positioning frame.

7. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 1, wherein: the clamping mechanism comprises

The main body of the clamping mechanism is an F-shaped sliding frame, and the tail ends of two sliding rods on the F-shaped sliding frame are fixedly welded with a strip-shaped pressing plate;

the tail end of the longitudinal rod section of the F-shaped sliding frame of the main body of the clamping mechanism is rotatably connected with a connecting rod.

8. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 7, wherein: the four pressing plates are all stuck with rubber pads with tooth mouths, and the four pressing plates are inserted in the four pressing plates to slide and contact with the rotating shaft in a pressing mode.

9. The auxiliary sensing test device based on the rotating speed of the motor rotor as claimed in claim 6, wherein: and the sliding rings at four ends of the outer side of the cross positioning frame are correspondingly and rotatably connected with the connecting rods at four positions, and the small-diameter top ring is in sliding abutting contact with the rotating shaft.

10. A use method of an auxiliary sensing test device based on the rotating speed of a motor rotor is characterized in that: the method comprises the following operation steps:

1) when the motor is used, the motor is lifted and arranged between two threaded shafts, and two mounting seat plates at the bottom of the motor are clamped and fixed through two L-shaped clamping plates;

2) then, the rectangular positioning frame is pushed forwards through a hand-operated screw rod, and the driving sleeve is matched with the rotating shaft sleeve in an inserting manner;

3) then two plum bolts on the sliding sleeves at the left and right positions of the mounting piece are loosened, and the rotating velometer is adjusted in a lifting way to enable the driving sleeve and the rotating shaft to keep concentric;

4) then, the rotary velometer and the driving sleeve are continuously pushed forward through a hand-operated screw rod, so that the cross positioning frame is abutted and contacted with the rotating shaft;

5) the rotating shaft abuts against the pushing cross-shaped positioning frame to drive the four abutting pressing plates to be in compression fit with the rotating shaft, so that power connection and transmission between the rotating shaft and the rotary velometer are realized;

6) and finally, starting a motor, driving the rotary velometer to rotate at a high speed by the motor, and displaying the rotating speed data by the rotary velometer through a liquid crystal screen on the rotary velometer.

Technical Field

The invention relates to the technical field of motor speed measuring devices, in particular to an auxiliary sensing testing device based on the rotating speed of a motor rotor.

Background

The motor rotor is a rotating part in the motor. The motor consists of a rotor and a stator, and is a conversion device for realizing electric energy and mechanical energy and electric energy. The rotor of the motor is divided into a motor rotor and a generator rotor. The motor rotor is divided into an inner rotor rotation mode and an outer rotor rotation mode. The inner rotor rotates in such a way that a core body in the middle of the motor is a rotating body, and torque (referred to as a motor) is output or energy is input (referred to as a generator). The outer rotor rotation mode is that the motor outer body is used as a rotating body, and different modes are convenient for application in various occasions. After the motor is manufactured, no-load rotating speed testing is required so as to ensure that the motor is qualified when leaving a factory.

For example, patent No. CN201010248617.7 discloses a rotor detecting device, which includes a testing motor for mounting a rotor to be detected, a rotational speed and torque transmitter for recording the rotational speed and torque of a rotating shaft of the testing motor, an adjustable load, and an electrical control system for calculating the adjustable load parameter. The invention also relates to a rotor detection method, which comprises the following steps: the method comprises the following steps: carrying out a load test on the standard rotor by using the standard rotor, and recording relevant parameters; and replacing the standard rotor with the rotor to be detected, carrying out a load test on the rotor, recording relevant parameters, comparing the relevant parameters with the standard parameters, and judging the qualified rotor within a certain range. The invention judges whether the inner part of the rotor to be detected has air holes and broken bars or not by comparing the working parameters of the standard rotor and the rotor to be detected, and has simple detection method and low equipment cost.

The existing motor rotor speed measuring device mostly needs to firstly slide the speed measuring device and butt joint the testing motor when measuring speed, then an additional manual operation power transmission part carries out power transmission connection on the speed measuring device and the testing motor, so that the step operation flow is relatively complicated, the trouble and the labor are wasted, and the improvement on the use efficiency of testing equipment is not facilitated.

Disclosure of Invention

The invention aims to provide an auxiliary sensing testing device based on the rotating speed of a motor rotor, and aims to solve the problems that a power transmission part needs to be operated manually additionally to carry out power transmission connection between a velometer and a testing motor, the operation process is complicated, and the trouble and labor are wasted in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an auxiliary sensing test device based on the rotating speed of a motor rotor comprises a workbench; the workbench comprises a threaded shaft, L-shaped clamping plates and positioning shafts, the workbench is integrally of a rectangular structure, two threaded shafts are arranged at the top end of the rear half part in a bilaterally symmetrical rotating mode, the two L-shaped clamping plates are arranged on the two threaded shafts in a meshing and sleeving mode, the motor is clamped and clamped between the two L-shaped clamping plates, the two positioning shafts are welded at the top end of the front half part of the workbench in a bilaterally symmetrical mode, and a vertical rectangular positioning frame is sleeved on the two positioning shafts in a sliding mode;

a rectangular positioning frame; the rectangular positioning frame comprises a mounting piece, a prescription-shaped mounting piece is slidably mounted on a left vertical supporting shaft and a right vertical supporting shaft of the rectangular positioning frame, a forward-supported rotary velometer is locked on the mounting piece, and a liquid crystal screen is embedded and mounted on the outer side shell wall of the rotary velometer; the worktable also comprises a hand-operated screw rod, a positioning lug plate is welded at the middle position of the outer brim at the rear side of the worktable in a supporting manner, the hand-operated screw rod is meshed and penetrated on the positioning lug plate, and the head end of the hand-operated screw rod is in running-through rotating connection with the bottom supporting and connecting plate of the rectangular positioning frame;

the head end of the rotating shaft of the rotary velometer is connected with a driving sleeve in a locking way, and four clamping mechanisms are inserted on the circumferential outer wall of the driving sleeve in a surrounding and penetrating way; rubber pads with tooth mouths are adhered to the four pressing plates, and the four pressing plates are inserted into the four pressing plates to be in sliding contact with the rotating shaft in a pressing manner; and the sliding rings at four ends of the outer side of the cross positioning frame are correspondingly and rotatably connected with the connecting rods at four positions, and the small-diameter top ring is in sliding abutting contact with the rotating shaft.

Preferably, the motor includes the pivot, the pivot of motor corresponds and alternates the cooperation with the driving sleeve center, and two department installation bedplate of motor bottom correspond with two L form cardboard clamping cooperation.

Preferably, the rectangle locating frame is wholly propped the even board and is controlled two department and erect the axle and weld jointly by upper and lower two places and constitute, and the installed part main part is a square frame, is bilateral symmetry on this square frame and supports the welding and have two sliding sleeves, these two sliding sleeves correspond with the rectangle locating frame erect axle sliding fit about, and threaded engagement has two plum blossom bolts on two sliding sleeves.

Preferably, the driving sleeve comprises

The annular end surface on the front side of the driving sleeve is symmetrically supported and welded with four force transmission shafts;

the tail ends of the four force transmission shafts are fixedly welded with a driving ring, and a central circular plate of the driving ring is in locking connection with a rotating shaft of the rotary velometer.

Preferably, the driving sleeve further comprises a cross positioning frame, the root section of the force transmission shaft at four positions is slidably sleeved with the cross positioning frame, and the center of the cross positioning frame is provided with a small-diameter top ring.

Preferably, the clamping mechanism comprises

The main body of the clamping mechanism is an F-shaped sliding frame, and the tail ends of two sliding rods on the F-shaped sliding frame are fixedly welded with a strip-shaped pressing plate;

the tail end of the longitudinal rod section of the F-shaped sliding frame of the main body of the clamping mechanism is rotatably connected with a connecting rod.

Preferably, the method comprises the following operation steps:

1. when the motor is used, the motor is lifted and arranged between two threaded shafts, and two mounting seat plates at the bottom of the motor are clamped and fixed through two L-shaped clamping plates;

2. then, the rectangular positioning frame is pushed forwards through a hand-operated screw rod, and the driving sleeve is matched with the rotating shaft sleeve in an inserting manner;

3. then two plum bolts on the sliding sleeves at the left and right positions of the mounting piece are loosened, and the rotating velometer is adjusted in a lifting way to enable the driving sleeve and the rotating shaft to keep concentric;

4. then, the rotary velometer and the driving sleeve are continuously pushed forward through a hand-operated screw rod, so that the cross positioning frame is abutted and contacted with the rotating shaft;

5. the rotating shaft abuts against the pushing cross-shaped positioning frame to drive the four abutting pressing plates to be in compression fit with the rotating shaft, so that power connection and transmission between the rotating shaft and the rotary velometer are realized;

6. and finally, starting a motor, driving the rotary velometer to rotate at a high speed by the motor, and displaying the rotating speed data by the rotary velometer through a liquid crystal screen on the rotary velometer.

Compared with the prior art, the invention has the beneficial effects that:

1. the mounting piece can be adjusted in a lifting sliding mode along the left vertical supporting shaft and the right vertical supporting shaft of the rectangular positioning frame and is positioned in a jacking mode through the two plum blossom bolts on the left sliding sleeve and the right sliding sleeve, so that the driving sleeve can be in concentric shaft connection transmission with the rotating shaft, and the driving sleeve is prevented from being in eccentric connection with the rotating shaft to influence the normal rotation speed measurement of the motor;

2. the cross positioning frame, the four connecting rods and the four clamping mechanisms of the invention form a four-connecting-rod sliding block structure together, by the structure, the front and back pushing cross-shaped positioning frames can drive the four clamping mechanisms to synchronously slide inwards and be tightly connected with the rotating shaft in an extruding way, when the rotary velometer and the motor are in sliding butt joint for power transmission, the cross positioning frame is in contact with the rotating shaft in advance and pushed by the rotating shaft to slide and is synchronously controlled to drive the four clamping mechanisms to slide inwards to be extruded and tightly connected with the rotating shaft, furthermore, the invention can drive the four clamping mechanisms to slide and press inwards by the aid of the sliding driving force generated by the sliding butt joint of the rotary velometer and the motor through the cross positioning frame in a linkage manner to complete power connection between the rotary velometer and the motor, the trouble of clamping power transmission parts such as a coupling and the like through additional manual operation is saved, the speed measuring step of the whole test system is simplified, and the test system is convenient, rapid and labor-saving to use;

3. the spacing space between the driving ring and the driving sleeve can provide allowance space for the front and back sliding of the cross positioning frame, so that the cross positioning frame can normally slide backwards by using the reverse jacking force of the rotating shaft, and the smooth implementation of the interpolation and compaction actions of the clamping mechanisms at four positions can be ensured.

Drawings

FIG. 1 is a schematic rear side view of the present invention;

FIG. 2 is a schematic diagram of the front three-dimensional structure of the present invention;

FIG. 3 is a schematic three-dimensional structure of a worktable according to the present invention;

FIG. 4 is a schematic view of a rotary velometer according to the present invention;

FIG. 5 is a schematic view of a driving sleeve according to the present invention;

FIG. 6 is a schematic view of the drive ring structure of the present invention;

FIG. 7 is a schematic view of the cross positioning frame of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 2 according to the present invention;

in the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a work table; 101. a threaded shaft; 102. an L-shaped clamping plate; 103. positioning the shaft; 104. a hand-operated screw rod; 2. a motor; 201. a rotating shaft; 3. a rectangular positioning frame; 301. a mounting member; 4. a rotary velometer; 5. a drive sleeve; 501. a force transmission shaft; 502. a drive ring; 503. a cross positioning frame; 6. a chucking mechanism; 601. pressing the plate; 602. a link 602.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: an auxiliary sensing test device based on the rotating speed of a motor rotor comprises a workbench 1; the workbench 1 comprises a threaded shaft 101, L-shaped clamping plates 102 and positioning shafts 103, the workbench 1 is integrally rectangular, two threaded shafts 101 are arranged at the top end of the rear half part in a bilaterally symmetrical mode in a rotating mode, the two L-shaped clamping plates 102 are arranged on the two threaded shafts 101 in a meshing and sleeving mode, the motor 2 is clamped and clamped between the two L-shaped clamping plates 102, the two positioning shafts 103 are welded at the top end of the front half part of the workbench 1 in a bilaterally symmetrical mode, and one vertical rectangular positioning frame 3 is arranged on the two positioning shafts 103 in a sliding and sleeving mode; the clamping mechanism 6 comprises a pressing plate 601, the main body of the clamping mechanism 6 is an F-shaped sliding frame, and the tail ends of two sliding rods on the F-shaped sliding frame are fixedly welded with a strip-shaped pressing plate 601; the tail end of the longitudinal rod section of the F-shaped sliding frame of the main body of the clamping mechanism 6 is rotatably connected with a connecting rod 602;

a rectangular positioning frame 3; the rectangular positioning frame 3 comprises a mounting piece 301, a prescription-shaped mounting piece 301 is slidably mounted on the left vertical supporting shaft and the right vertical supporting shaft of the rectangular positioning frame 3, a forward-supported rotary velometer 4 is fastened on the mounting piece 301, and a liquid crystal screen is embedded and mounted on the outer side shell wall of the rotary velometer 4; the driving sleeve 5 further comprises a cross positioning frame 503, the root sections of the four force transmission shafts 501 are slidably sleeved with the cross positioning frame 503, and the center of the cross positioning frame 503 is provided with a small-diameter top ring;

the head end of a rotating shaft of the rotary velometer 4 is connected with a driving sleeve 5 in a locking way, and four clamping mechanisms 6 are inserted on the circumferential outer wall of the driving sleeve 5 in a surrounding and penetrating way; the four pressing plates 601 are adhered with rubber pads with tooth mouths, the four pressing plates 601 are in inserted sliding contact with the rotating shaft 201 in a pressing mode, the four pressing plates 601 can be synchronously inserted and clamped on the rotating shaft 201 in a sliding mode, and power connection and transmission of the rotating shaft 201 and the rotary velometer 4 are achieved.

Further, workstation 1 still includes hand lead screw 104, the intermediate position of the outer eaves of workstation 1 rear side supports the welding and has a location otic placode, and the hand lead screw 104 of a department is worn to be equipped with in the meshing on this location otic placode, and the head end of hand lead screw 104 props even board through-rotation with the bottom of rectangle locating frame 3 and is connected, but through hand lead screw 104 screw propulsion rectangle locating frame 3 with rotatory velometer 4 and driving sleeve 5 preceding smooth and pivot 201 butt joint power transmission together.

Further, motor 2 includes pivot 201, and motor 2's pivot 201 corresponds and alternates the cooperation with drive sleeve 5 center, and two department installation bedplate of motor 2 bottom correspond with two L form cardboard 102 clamping cooperation, but carry out the clamping to motor 2 through two L form cardboards 102 inside slideings in opposite directions of screw thread propulsion through two department threaded spindle 101.

Further, rectangle locating frame 3 is whole to be propped even board and two department vertical braces axle about and weld jointly by two upper and lower departments and constitute, and installed part 301 main part is a square frame, it has two sliding sleeves to be bilateral symmetry on this square frame to support the welding, these two sliding sleeves correspond with rectangle locating frame 3 about vertical braces axle sliding fit, and threaded engagement has two plum blossom bolts on two sliding sleeves, installed part 301 can follow rectangle locating frame 3 about vertical braces axle go up and down to slide the adjustment and tightly fix a position through its two plum blossom bolt tops on the sliding sleeve about, make driving sleeve 5 can keep concentric coupling transmission with pivot 201, avoid driving sleeve 5 and pivot 201 eccentric connection, influence the normal rotation speed that motor 2 measured.

Further, the driving sleeve 5 comprises

The force transmission shaft 501, four force transmission shafts 501 are symmetrically supported and welded on the annular end face of the front side of the driving sleeve 5;

the tail ends of the driving ring 502 and the four force transmission shafts 501 are fixedly welded with a driving ring 502, the central circular plate of the driving ring 502 is in locking connection with the rotating shaft of the rotary velometer 4, and the spacing space between the driving ring 502 and the driving sleeve 5 can provide allowance space for the front and back sliding of the cross positioning frame 503, so that the cross positioning frame 503 can normally slide back by using the reverse jacking force of the rotating shaft 201, and the smooth implementation of the inserting and pressing action of the four clamping mechanisms 6 can be ensured.

Further, the sliding rings at four ends of the outer side of the cross positioning frame 503 are correspondingly connected with the four connecting rods 602 in a rotating manner, the small-diameter top ring is in sliding abutting contact with the rotating shaft 201, the cross positioning frame 503, the four connecting rods 602 and the four clamping mechanisms 6 jointly form a four-connecting-rod sliding block structure, through the structure, the front and rear pushing cross positioning frame 503 can drive the four clamping mechanisms 6 to synchronously slide inwards and squeeze the rotating shaft 201 to be tightly clamped, and when the rotary velometer 4 is in sliding butt joint with the motor 2 to perform power transmission, the cross positioning frame 503 can be in contact with the rotating shaft 201 in advance and pushed backwards to synchronously control and drive the four clamping mechanisms 6 to slide inwards and squeeze the rotating shaft 201 to be tightly clamped, so that the invention can drive the four clamping mechanisms 6 to slide inwards and press in a linked manner by the sliding driving force of the rotary velometer 4 in sliding butt joint with the motor 2 through the cross positioning frame 503 to complete the power connection of the rotary velometer 4 and the motor 2, the trouble of clamping power transmission parts such as a coupling and the like through additional manual operation is omitted, the integral speed measurement step of the test system is simplified, and the test system is convenient, rapid and labor-saving to use.

Further, the method comprises the following operation steps:

1. when in use, the motor 2 is lifted and arranged between the two threaded shafts 101, and the two mounting seat plates at the bottom of the motor 2 are clamped and fixed through the two L-shaped clamping plates 102;

2. then, the rectangular positioning frame 3 is pushed forwards through the hand-operated screw rod 104, and the driving sleeve 5 is in sleeve insertion fit with the rotating shaft 201;

3. then two plum bolts on the sliding sleeves at the left and right positions of the mounting piece 301 are loosened, and the rotational velometer 4 is adjusted by lifting to enable the driving sleeve 5 and the rotating shaft 201 to keep concentric;

4. then, the rotary velometer 4 and the driving sleeve 5 are continuously pushed forward through the hand-operated screw rod 104, so that the cross positioning frame 503 is abutted and contacted with the rotating shaft 201;

5. the rotating shaft 201 abuts against the pushing cross-shaped positioning frame 503 to drive the pressing plates 601 at four positions to be in compression fit with the rotating shaft 201, so that power connection and transmission between the rotating shaft 201 and the rotary velometer 4 are realized;

6. and finally, starting the motor 2, driving the rotary velometer 4 to rotate at a high speed by the motor 2, and displaying the rotating speed data by the rotary velometer 4 through a liquid crystal screen on the rotary velometer.

In another embodiment, an electric motor may be coupled to the hand lead screw 104, and the electric motor may replace manual power to rotate and drive the hand lead screw 104 to propel and slide the motor 2, so as to effectively reduce the labor intensity of workers.

The working principle is as follows: the hand-operated screw rod 104 can be used for pushing the rectangular positioning frame 3, the rotary velometer 4 and the driving sleeve 5 to slide forwards together to be in butt joint with the rotating shaft 201 for power transmission, the two threaded shafts 101 can be used for pushing the two L-shaped clamping plates 102 to slide inwards in opposite directions to clamp and fix the motor 2, the mounting piece 301 can be adjusted in a lifting sliding mode along the left and right vertical supporting shafts of the rectangular positioning frame 3 and is tightly pressed and positioned through two plum blossom bolts on the left and right sliding sleeves, and the driving sleeve 5 can be in concentric shaft connection transmission with the rotating shaft 201;

the cross positioning frame 503, the four connecting rods 602 and the four clamping mechanisms 6 jointly form a four-connecting-rod sliding block structure, through the structure, the front and rear pushing cross positioning frame 503 can drive the four clamping mechanisms 6 to synchronously slide inwards and squeeze and grasp the rotating shaft 201, and when the rotary velometer 4 and the motor 2 are in sliding butt joint for power transmission, the cross positioning frame 503 can be in contact with the rotating shaft 201 in advance and pushed by the rotating shaft to slide backwards, and drives the four clamping mechanisms 6 to slide inwards and squeeze and grasp the rotating shaft 201 under the synchronous control.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.