Motor whole machine shaft detection device and detection method thereof

Abstract

The application discloses a motor complete machine shaft detection device and a detection method thereof, and aims to provide a motor complete machine shaft detection device and a detection method thereof, which can detect the shaft runout of a high-speed rotating motor shaft in a working state of the motor, so as to solve the problem that the shaft runout in the high-speed rotating state of the motor cannot be measured in the prior art. The motor complete machine shaft detection device comprises a motor mounting structure, a shaft runout detection structure and a motor fixing device. The motor mounting structure comprises a motor mounting seat and the motor fixing device arranged on the motor mounting seat and used for fixing a motor to be detected. The shaft runout detection structure comprises a shaft runout detection mounting seat, a shaft runout detection dial gauge or a shaft runout detection micrometer, a mounting piece, a lifting actuating mechanism arranged on the shaft runout detection mounting seat and used for lifting the mounting piece, and a laser emitter and a laser receiver arranged on the mounting piece.

Description

Technical Field

[0001] This invention relates to the field of motor shaft testing technology, specifically to a motor shaft testing device and method. Background Technology

[0002] When a motor is operating, its shaft is directly connected to the workpiece, making the detection of shaft stiffness and runout essential. Motor shaft inspection typically involves testing individual shaft components, with few devices available for inspecting the shaft after the entire motor assembly. Currently, existing motor shaft runout detection devices and methods include a dial indicator bracket and a dial indicator mounted on it. The method involves placing the dial indicator probe vertically downwards against the upper surface of the motor shaft, then manually rotating the shaft to detect runout at low speeds. This current method uses a contact-based measurement approach to measure shaft runout at low speeds, which has the following problems: Firstly, it cannot measure shaft runout at high speeds. Secondly, due to assembly and tolerance issues among motor components, the shaft runout at low speeds differs significantly from that at high speeds, making the low-speed runout inaccurate for the actual operating conditions. Summary of the Invention

[0003] The purpose of this invention is to provide a motor shaft detection device and method that can detect shaft runout of a high-speed rotating motor shaft while the motor is in operation, thereby solving the problem that the existing technology cannot measure the shaft runout of a motor when it is rotating at high speed.

[0004] The technical solution of this invention is:

[0005] A motor shaft inspection device, comprising:

[0006] The motor mounting structure includes a motor mounting base and a motor fixing device disposed on the motor mounting base. The motor fixing device is used to fix the motor to be tested.

[0007] A shaft runout detection structure includes a shaft runout detection mounting base, a shaft runout detection dial indicator or micrometer, a mounting component, a lifting actuator mounted on the shaft runout detection mounting base for lifting the mounting component, and a laser emitter and laser receiver mounted on the mounting component. The shaft runout detection dial indicator or micrometer is used to detect the shaft runout of the motor under test fixed on the motor fixing device.

[0008] The specific steps of the shaft runout detection method using the motor shaft detection device of this scheme are as described below. During the synchronous upward movement of the lifting actuator drive mounting component, laser emitter, and laser receiver, a shaft runout detection dial indicator or micrometer is used to measure the upward distance of the mounting component during the intermittent receiving phase (the upward distance of the mounting component during the intermittent receiving phase is the shaft runout distance of the motor under test), thus obtaining the shaft runout distance of the motor under test. Since none of the components of the motor shaft detection device need to contact the motor shaft during the entire measurement process, it is possible to detect the shaft runout of a high-speed rotating motor shaft while the motor is powered on, thereby obtaining the shaft runout distance of the motor under test; thus solving the problem in existing technologies that cannot measure shaft runout when the motor is rotating at high speed.

[0009] Preferably, the shaft runout detection structure further includes a vertical guide rail mounted on the shaft runout detection mounting base. The mounting component moves up and down along the vertical guide rail. The lifting actuator includes a drive structure and a lead screw and nut mechanism. The lead screw of the lead screw and nut mechanism is rotatably mounted on the shaft runout detection mounting base and is parallel to the vertical guide rail. The drive structure drives the lead screw to rotate, and the nut of the lead screw and nut mechanism is connected to the mounting component. This ensures stable and high-precision lifting and lowering of the mounting component, laser emitter, and laser receiver along the vertical guide rail, thereby improving the accuracy of shaft runout detection.

[0010] Preferably, the shaft runout detection structure also includes a coarse adjustment structure, which includes a locking bolt, a vertical guide groove on the mounting component, a lifting slider that slides along the vertical guide groove, and several locking bolt holes distributed sequentially from top to bottom on the mounting component. The locking bolt holes are connected to the inner cavity of the vertical guide groove, and the locking bolt is set in one of the locking bolt holes to lock the lifting slider and the mounting component together. The nut of the lead screw nut mechanism is connected to the lifting slider. In practical use, before shaft runout detection, the height positions of the mounting component, laser emitter, and laser receiver can be quickly adjusted using a coarse adjustment mechanism. Specifically, the locking bolts are loosened to adjust their height positions; then, the locking bolts are tightened to secure the lifting slider and mounting component together. During this process, the locking bolts can be installed into the appropriate locking bolt holes, thereby achieving rapid adjustment of the height positions of the mounting component, laser emitter, and laser receiver to accommodate rapid adjustments for different motor models. Then, during shaft runout detection, the positions of the mounting component, laser emitter, and laser receiver are precisely adjusted using a lead screw and nut mechanism to ensure detection accuracy.

[0011] Preferably, the drive structure is a motor, a handwheel, or a hand crank.

[0012] Preferably, the mounting also includes a reference plate for mating with a dial indicator or micrometer for shaft runout detection. In this way, the dial indicator or micrometer can detect the distance of shaft runout by detecting changes in the height of the reference plate, which is beneficial for practical operation.

[0013] Preferably, the system also includes a base with a horizontal guide rail. The motor mounting base slides along the horizontal guide rail, and the motor mounting structure further includes a motor mounting base translation mechanism for driving the motor mounting base to slide along the horizontal guide rail. This allows the horizontal position of the motor to be tested to be adjusted as needed to accommodate the testing of different motor models.

[0014] Preferably, the shaft runout detection mounting base slides along a horizontal guide rail, and the shaft runout detection structure includes a detection mounting base translation mechanism for driving the shaft runout detection mounting base to slide along the horizontal guide rail. In this way, the horizontal position of the shaft runout detection structure can be adjusted as needed to accommodate the detection of different motor models.

[0015] Preferably, the device also includes a shaft stiffness detection structure for detecting the shaft stiffness of the motor to be tested, which is fixed on the motor mounting device. The shaft stiffness detection structure includes a top block, a lifting machine for raising and lowering the top block, and a shaft stiffness detection dial indicator or micrometer for detecting the shaft stiffness of the motor. The top block is provided with an upward-facing shaft limiting groove. The specific steps of the shaft stiffness detection method using the motor shaft detection device of this solution are described below, which obtains the shaft stiffness of the entire motor by detecting the shaft stiffness of the entire motor.

[0016] A detection method using a motor shaft detection device includes a shaft runout detection method, which comprises the following steps:

[0017] First, fix the motor to be tested on the motor fixing device; adjust the mounting parts, laser emitter and laser receiver downward so that the height of the laser emitter and laser receiver is lower than the position of the shaft of the motor to be tested;

[0018] Second, the motor under test is powered on, and the laser transmitter emits a laser signal. Then, the mounting component, laser transmitter, and laser receiver are driven to move upward synchronously through the lifting actuator. During this process, the laser signal received by the laser receiver includes the following three stages: a long reception stage, an intermittent reception stage, and a no-signal reception stage. The long reception stage means that the laser receiver continuously receives the laser emitted by the laser transmitter. The intermittent reception stage means that the laser receiver intermittently receives the laser emitted by the laser transmitter. The no-signal reception stage means that the laser receiver does not receive the laser emitted by the laser transmitter at all. During the intermittent reception stage, the distance that the mounting component moves upward is the shaft runout distance of the motor under test. The shaft runout distance of the motor under test is obtained by measuring the distance that the mounting component moves upward during the intermittent reception stage using a shaft runout detection dial indicator or micrometer.

[0019] A detection method using a whole-machine shaft detection device includes a shaft stiffness detection method, which sequentially includes the following steps:

[0020] First, fix the motor to be tested on the motor fixing device, and position the shaft of the motor to be tested above the shaft limiting groove of the top block;

[0021] Second, the lifting machine provides a set lifting force F, which lifts the shaft of the motor to be tested upward through the shaft limiting groove of the top block. During this process, the upward displacement x of the shaft of the motor to be tested is measured by a dial indicator or micrometer. Then, the shaft stiffness of the motor to be tested is obtained according to the stiffness formula K=F / x (F is the lifting force F, and x is the displacement x).

[0022] The beneficial effects of this invention are:

[0023] Firstly, it can detect the shaft runout of a high-speed rotating motor shaft while the motor is in operation, thus solving the problem in existing technologies that cannot measure the shaft runout when the motor is rotating at high speed.

[0024] Secondly, the shaft stiffness of the entire motor is obtained by testing the shaft stiffness of the motor to be tested. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a motor shaft detection device according to the present invention.

[0026] Figure 2 This is a partial structural diagram of the motor mounting structure and shaft stiffness detection structure of the motor shaft detection device of the present invention.

[0027] Figure 3 This is a partial structural diagram of the shaft runout detection structure of a motor shaft detection device according to the present invention.

[0028] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0029] In the picture:

[0030] Base 1, horizontal guide rail 1.1;

[0031] 2. Motor mounting structure, 2.1. Motor mounting base, 2.2. Motor fixing device, 2.3. Lower hoop plate, 2.4. Upper hoop plate, 2.5. Motor mounting base translation mechanism;

[0032] Shaft runout detection structure 3, shaft runout detection mounting base 3.0, mounting component 3.1, lifting actuator 3.2, lead screw and nut mechanism 3.21, drive structure 3.22, laser emitter 3.3, laser receiver 3.4, shaft runout detection dial indicator 3.5, dial indicator bracket 3.6, reference plate 3.7, vertical guide rail 3.8, coarse adjustment structure 3.9, vertical guide groove 3.91, lifting slider 3.92, locking bolt hole 3.93, locking bolt 3.94, detection mounting base translation mechanism 3.10;

[0033] Shaft stiffness testing structure 4, top block 4.1, lifting machine 4.2, shaft stiffness testing dial indicator 4.3, sliding block 4.4;

[0034] Motor 5 to be tested. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0036] Specific Implementation Example 1: As shown in the example Figure 1 , Figure 2 , Figure 3As shown, a motor shaft detection device includes a motor mounting structure 2 and a shaft runout detection structure 3. The motor mounting structure 2 includes a motor mounting base 2.1 and a motor fixing device 2.2 mounted on the motor mounting base, which is used to fix the motor 5 to be tested. The shaft runout detection structure 3 includes a shaft runout detection mounting base 3.0, a shaft runout detection dial indicator 3.5 or micrometer, a mounting component 3.1, a lifting actuator 3.2 mounted on the shaft runout detection mounting base for raising and lowering the mounting component, and a laser emitter 3.3 and a laser receiver 3.4 mounted on the mounting component. In this embodiment, the laser emitter and laser receiver are located at the same height; the laser emitter emits laser light, and the laser receiver receives the laser light emitted by the laser emitter. A dial indicator or micrometer is used to detect the shaft runout of a motor fixed on a motor mounting device. In this embodiment, the shaft runout detection structure uses a dial indicator to detect the shaft runout of the motor. The shaft runout detection structure also includes a dial indicator bracket 3.6 set on the shaft runout detection mounting base, on which the shaft runout detection dial indicator is mounted.

[0037] The specific steps of the shaft runout detection method using the motor shaft detection device of this embodiment are as described in Specific Embodiment 3 below. During the synchronous upward movement of the lifting actuator driving the mounting component, laser emitter, and laser receiver, a shaft runout detection dial indicator or micrometer is used to measure the upward distance of the mounting component during the intermittent receiving phase (the upward distance of the mounting component during the intermittent receiving phase is the shaft runout distance of the motor under test), thereby obtaining the shaft runout distance of the motor under test. Since none of the components of the motor shaft detection device need to contact the motor shaft during the entire measurement process, shaft runout can be detected on a high-speed rotating motor shaft while the motor is powered on, thus obtaining the shaft runout distance of the motor under test; thereby solving the problem in the prior art that it is impossible to measure the shaft runout when the motor is rotating at high speed.

[0038] Specifically, such as Figure 2 As shown, the motor fixing device 2.2 includes a lower clamp plate 2.3 and an upper clamp plate 2.4. The lower clamp plate is fixed to the motor mounting base. The upper clamp plate and the lower clamp plate are connected by bolts, or one end of the upper clamp plate is hinged to the lower clamp plate, and the other end of the upper clamp plate is bolted to the lower clamp plate. The upper clamp plate has an upward-facing lower motor mounting slot and an upward-facing upper motor mounting slot. The motor to be tested is clamped and fixed between the lower motor mounting slot of the lower clamp plate and the upper motor mounting slot of the upper clamp plate.

[0039] Furthermore, such as Figure 1 , Figure 2 , Figure 3As shown, a motor shaft inspection device further includes a base 1. The base is provided with horizontal guide rails 1.1; in this embodiment, there are two horizontal guide rails. A motor mounting base 2.1 slides along the horizontal guide rails. The motor mounting structure also includes a motor mounting base translation mechanism 2.5 for driving the motor mounting base to slide along the horizontal guide rails. The motor mounting base translation mechanism is a linear module, an electric push rod, or a cylinder. In this embodiment, the motor mounting base translation mechanism is a manual translation mechanism, including a manual lead screw mechanism. The lead screw of the manual lead screw mechanism is rotatably mounted on the base, and the lead screw is parallel to the horizontal guide rails. One end of the lead screw of the manual lead screw mechanism is provided with a hand crank, and the nut of the manual lead screw mechanism is fixed to the motor mounting base. Thus, the horizontal position of the motor to be inspected can be adjusted as needed to accommodate the inspection of different motor models.

[0040] The shaft runout detection mounting base 3.0 slides along a horizontal guide rail. The shaft runout detection structure includes a detection mounting base translation mechanism 3.10 for driving the shaft runout detection mounting base to slide along the horizontal guide rail. The detection mounting base translation mechanism is a linear module, an electric push rod, or a cylinder. In this embodiment, the detection mounting base translation mechanism is a manual translation mechanism, which includes a manual lead screw mechanism. The lead screw of the manual lead screw mechanism is rotatably mounted on the base. The lead screw of the manual lead screw mechanism is parallel to the horizontal guide rail. One end of the lead screw of the manual lead screw mechanism is equipped with a hand crank, and the nut of the manual lead screw mechanism is fixed to the shaft runout detection mounting base. In this way, the horizontal position of the shaft runout detection structure can be adjusted as needed to adapt to the detection of different types of motors.

[0041] Furthermore, such as Figure 1 , Figure 3 , Figure 4 As shown, the shaft runout detection structure also includes a vertical guide rail 3.8 mounted on the shaft runout detection mounting base. The mounting component 3.1 moves up and down along the vertical guide rail. In this embodiment, the mounting component includes a vertical slider along the vertical guide rail and a mounting frame integrally connected to the vertical slider. The lifting actuator 3.2 includes a drive structure 3.22 and a lead screw and nut mechanism 3.21. The lead screw of the lead screw and nut mechanism is rotatably mounted on the shaft runout detection mounting base, and the lead screw is parallel to the vertical guide rail. The drive structure is used to drive the lead screw to rotate; the drive structure is a motor, a handwheel, or a hand crank. In this embodiment, the drive structure is a handwheel. The nut of the lead screw and nut mechanism is connected to the mounting component. This ensures that the mounting component, laser emitter, and laser receiver move up and down stably and with high precision along the vertical guide rail, thereby improving the accuracy of shaft runout detection.

[0042] Furthermore, such as Figure 3 , Figure 4As shown, the shaft runout detection structure also includes a coarse adjustment structure 3.9. The coarse adjustment structure includes a locking bolt 3.94, a vertical guide groove 3.91 on the mounting component, a lifting slider 3.92 sliding along the vertical guide groove, and several locking bolt holes 3.93 distributed sequentially from top to bottom on the mounting component. The locking bolt holes communicate with the inner cavity of the vertical guide groove. The locking bolt is located in one of the locking bolt holes to lock the lifting slider and the mounting component together. The nut of the lead screw nut mechanism is connected to the lifting slider. In practical use, before shaft runout detection, the height positions of the mounting component, laser emitter, and laser receiver can be quickly adjusted using a coarse adjustment mechanism. Specifically, the locking bolts are loosened to adjust their height positions; then, the locking bolts are tightened to secure the lifting slider and mounting component together. During this process, the locking bolts can be installed into the appropriate locking bolt holes, thereby achieving rapid adjustment of the height positions of the mounting component, laser emitter, and laser receiver to accommodate rapid adjustments for different motor models. Then, during shaft runout detection, the positions of the mounting component, laser emitter, and laser receiver are precisely adjusted using a lead screw and nut mechanism to ensure detection accuracy.

[0043] The mounting also includes a reference plate 3.7 for mating with a dial indicator or micrometer for shaft runout detection. The reference plate is horizontally positioned. Thus, the dial indicator or micrometer can detect the distance of shaft runout by detecting changes in the height of the reference plate, which is beneficial for practical operation.

[0044] In this second specific embodiment, the remaining structure is the same as in the first specific embodiment, except that...

[0045] like Figure 1 , Figure 2 As shown, a motor shaft testing device further includes a shaft stiffness testing structure 4 for testing the shaft stiffness of the motor to be tested, which is fixed on a motor fixing device. The shaft stiffness testing structure includes a top block 4.1, a lifting mechanism 4.2 for raising and lowering the top block, and a shaft stiffness testing dial indicator 4.3 or micrometer for testing the shaft stiffness of the motor. The lifting mechanism is a hydraulic cylinder or an electric cylinder. The lifting mechanism is fixed on a base. The top block has an upward-facing shaft limiting groove. The shaft limiting groove is V-shaped or U-shaped. In this embodiment, the shaft stiffness testing structure uses a shaft stiffness testing dial indicator to test the shaft stiffness of the motor; the shaft stiffness testing structure also includes a dial indicator bracket on which the shaft stiffness testing dial indicator is mounted.

[0046] The specific steps of the shaft stiffness detection method using the motor shaft detection device in this embodiment are as described in the fourth specific embodiment below. The method uses the motor shaft detection device to detect the shaft stiffness of the entire motor to obtain the shaft stiffness of the motor to be tested.

[0047] Furthermore, such as Figure 2 As shown, the shaft stiffness testing structure also includes a sliding block 4.4 that slides along a horizontal guide rail, and the dial indicator bracket of the shaft stiffness testing structure is fixed on the sliding block. The sliding block is equipped with a set screw for fixing it to the horizontal guide rail. Thus, the dial indicator bracket and the shaft stiffness testing dial indicator of the shaft stiffness testing structure can be moved as needed.

[0048] Specific embodiment three: a detection method using a motor shaft detection device. The specific structure of the motor shaft detection device in this embodiment is the same as that in specific embodiment one.

[0049] A detection method using a whole-machine shaft detection device includes a shaft runout detection method. The shaft runout detection method includes the following steps in sequence:

[0050] First, fix the motor to be tested on the motor fixing device. At this time, the bearings of the motor to be tested are horizontally distributed.

[0051] The shaft of the test motor, which is fixed on the motor mounting device, is positioned between the laser emitter and the laser receiver. Specifically, the position of the motor to be tested, which is fixed on the motor mounting device, is adjusted by sliding the motor mounting base along the horizontal guide rail; or the position of the mounting component, the laser emitter, and the laser receiver is adjusted by sliding the shaft runout detection mounting base along the horizontal guide rail, so that the shaft of the test motor is positioned between the laser emitter and the laser receiver.

[0052] Adjust the mounting components, laser transmitter, and laser receiver downwards so that the height of the laser transmitter and laser receiver is lower than the shaft of the motor to be tested. At this point, the laser signal emitted by the laser transmitter can be received by the laser receiver.

[0053] Second, the motor under test is powered on, and the laser transmitter emits a laser signal. Then, the mounting component, laser transmitter, and laser receiver are driven to move upward synchronously through the lifting actuator. During this process, the laser signal received by the laser receiver includes the following three stages: a long reception stage, an intermittent reception stage, and a no-signal reception stage. The long reception stage means that the laser receiver continuously receives the laser emitted by the laser transmitter, that is, in the long reception stage, the laser emitted by the laser transmitter is not blocked by the shaft of the tested motor. The intermittent reception stage means that the laser receiver intermittently receives the laser emitted by the laser transmitter, that is, in the intermittent reception stage, the laser emitted by the laser transmitter is intermittently blocked by the shaft of the tested motor. The no-signal reception stage means that the laser receiver cannot receive the laser emitted by the laser transmitter at all, that is, in the no-signal reception stage, the laser emitted by the laser transmitter is continuously blocked by the shaft of the tested motor.

[0054] During the intermittent receiving phase, the distance the mounting component moves upward is the shaft runout distance of the motor under test. The shaft runout distance of the motor under test is obtained by measuring the upward movement of the mounting component during the intermittent receiving phase using a shaft runout detection dial indicator or micrometer.

[0055] In one embodiment of this invention, the specific method for measuring the upward movement distance of the mounting component during the intermittent receiving phase using a dial indicator or micrometer for shaft runout detection is as follows.

[0056] Before the lifting actuator drives the mounting component, laser emitter and laser receiver to move upward synchronously, the probe of the shaft runout detection dial indicator or dial gauge is placed vertically downward against the upper surface of the mounting component. Specifically, the probe of the shaft runout detection dial indicator or dial gauge is placed vertically downward against the upper surface of the reference plate of the mounting component.

[0057] During the synchronous upward movement of the lifting actuator, the mounting component, the laser transmitter, and the laser receiver, when the laser signal received by the laser receiver transitions from a long reception phase to an intermittent reception phase, the lifting actuator stops driving the mounting component, the laser transmitter, and the laser receiver upward. Then, the data from the shaft runout detection dial indicator or micrometer is recorded. Next, the lifting actuator continues to drive the mounting component, the laser transmitter, and the laser receiver upward synchronously. When the laser signal received by the laser receiver transitions from an intermittent reception phase to a no-signal reception phase, the lifting actuator stops driving the mounting component, the laser transmitter, and the laser receiver upward. Then, the data from the shaft runout detection dial indicator or micrometer is recorded again. Finally, the difference between the two data recorded by the shaft runout detection dial indicator or micrometer is calculated, and this difference is the shaft runout distance of the motor under test.

[0058] In another embodiment of this invention, the specific method for measuring the upward movement distance of the mounting component during the intermittent receiving phase using a dial indicator or micrometer for shaft runout detection is as follows.

[0059] Before the lifting actuator drives the mounting component, laser emitter and laser receiver to move upward synchronously, the probe of the shaft runout detection dial indicator or dial gauge is placed vertically downward against the upper surface of the mounting component. Specifically, the probe of the shaft runout detection dial indicator or dial gauge is placed vertically downward against the upper surface of the reference plate of the mounting component.

[0060] During the synchronous upward movement of the lifting actuator driving the mounting component, laser emitter, and laser receiver, when the laser signal received by the laser receiver transitions from a long reception phase to an intermittent reception phase, the lifting actuator stops driving the mounting component, laser emitter, and laser receiver upward. Next, the probe of the shaft runout detection dial indicator or micrometer is vertically pressed downward against the upper surface of the mounting component. Then, the lifting actuator continues to drive the mounting component, laser emitter, and laser receiver upward synchronously. When the laser signal received by the laser receiver transitions from an intermittent reception phase to a no-signal reception phase, the lifting actuator stops driving the mounting component, laser emitter, and laser receiver upward. Finally, the data from the shaft runout detection dial indicator or micrometer is recorded; this data represents the shaft runout distance of the motor under test.

[0061] In this embodiment, the motor shaft detection device also includes a controller and an indicator light. When the laser signal received by the laser receiver changes from the long reception stage to the intermittent reception stage, the indicator light lights up or changes color; when the laser signal received by the laser receiver changes from the intermittent reception stage to the no-signal reception stage, the indicator light turns off or changes color.

[0062] If the drive structure uses a motor-driven lead screw and nut mechanism to rotate the lead screw, when the laser signal received by the laser receiver changes from the long reception stage to the intermittent reception stage, the controller automatically controls the motor to stop rotating, stopping the upward movement of the mounting component, laser transmitter, and laser receiver. Similarly, when the laser signal received by the laser receiver changes from the intermittent reception stage to the no-signal reception stage, the controller automatically controls the motor to stop rotating, stopping the upward movement of the mounting component, laser transmitter, and laser receiver.

[0063] If the drive structure uses a hand crank or hand handle to drive the lead screw of the lead screw nut mechanism, the operator needs to observe the indicator light. When the laser signal received by the laser receiver changes from the long reception stage to the intermittent reception stage (i.e., when the indicator light is on or changes color), stop turning the hand crank or hand handle, and stop driving the mounting component, laser transmitter, and laser receiver to move upward. Similarly, when the laser signal received by the laser receiver changes from the intermittent reception stage to the no-signal reception stage (i.e., when the indicator light is off or changes color), stop turning the hand crank or hand handle, and stop driving the mounting component, laser transmitter, and laser receiver to move upward.

[0064] Specific embodiment four: a detection method using a motor shaft detection device. The specific structure of the motor shaft detection device in this embodiment is the same as that in specific embodiment two.

[0065] A detection method using a whole-machine shaft detection device includes a shaft stiffness detection method, which sequentially includes the following steps:

[0066] First, fix the motor to be tested on the motor fixing device, and position the shaft of the motor to be tested above the shaft limiting groove of the top block;

[0067] Place the probe of the dial indicator or micrometer for shaft stiffness testing vertically downward against the upper surface of the shaft of the motor to be tested.

[0068] Second, the lifting machine provides a set lifting force F, which lifts the shaft of the motor to be tested upward through the shaft limiting groove of the top block. During this process, the upward displacement x of the shaft of the motor to be tested is measured by a dial indicator or micrometer. Then, the shaft stiffness of the motor to be tested is obtained according to the stiffness formula K=F / x (F is the lifting force F, and x is the displacement x).

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A detection method using a motor shaft detection device, characterized in that, The application relates to a shaft runout detection method and a shaft rigidity detection method. The motor whole machine shaft detection device comprises: The motor installation structure comprises a motor mounting seat and a motor fixing device arranged on the motor mounting seat, and the motor fixing device is used for fixing a motor to be detected; The shaft runout detection structure comprises a shaft runout detection mounting seat, a shaft runout detection dial gauge or a shaft runout detection micrometer, a mounting piece, a lifting actuating mechanism arranged on the shaft runout detection mounting seat and used for lifting the mounting piece, and a laser emitter and a laser receiver arranged on the mounting piece; The shaft runout detection method comprises the following steps in sequence, First, the motor to be detected is fixed on the motor fixing device; the mounting piece, the laser emitter and the laser receiver are adjusted downwards, so that the height of the laser emitter and the laser receiver is lower than the position of the shaft of the motor to be detected; Second, the motor to be detected is powered on and works, and the laser emitter emits a laser signal; then, the mounting piece, the laser emitter and the laser receiver are synchronously lifted upwards by the lifting actuating mechanism; in this process, the laser signal received by the laser receiver comprises the following three stages in sequence, a long receiving stage, an intermittent receiving stage and a no-signal receiving stage; the long receiving stage refers to that the laser receiver continuously receives the laser emitted by the laser emitter; the intermittent receiving stage refers to that the laser receiver intermittently receives the laser emitted by the laser emitter; and the no-signal receiving stage refers to that the laser receiver cannot receive the laser emitted by the laser emitter at all; in the intermittent receiving stage, the lifting distance of the mounting piece is the shaft runout distance of the motor to be detected; the lifting distance of the mounting piece in the intermittent receiving stage is measured by the shaft runout detection dial gauge or the shaft runout detection micrometer, so that the shaft runout distance of the motor to be detected is obtained.

2. The detection method using the motor assembly shaft detection device according to claim 1, characterized by, The application also relates to a shaft rigidity detection method, The motor whole machine shaft detection device further comprises a shaft rigidity detection structure used for detecting the shaft rigidity of the motor to be detected fixed on the motor fixing device; the shaft rigidity detection structure comprises a top block, a jacking machine used for lifting the top block and a shaft rigidity detection dial gauge or a shaft rigidity detection micrometer used for detecting the shaft rigidity of the motor; and the top block is provided with a shaft limiting groove with an upward opening; The shaft rigidity detection method comprises the following steps in sequence, First, the motor to be detected is fixed on the motor fixing device, and the shaft of the motor to be detected is located above the shaft limiting groove of the top block; Second, the jacking machine provides a set jacking force F, and the shaft of the motor to be detected is lifted upwards through the shaft limiting groove of the top block; in this process, the upward displacement x of the shaft of the motor to be detected is measured by the shaft rigidity detection dial gauge or the shaft rigidity detection micrometer; then, the shaft rigidity of the motor to be detected is obtained according to the rigidity formula K=F / x.

3. The detection method using the motor assembly shaft detection device according to claim 1, characterized by, The shaft runout detection structure further comprises a vertical guide rail arranged on the shaft runout detection mounting seat; the mounting piece is lifted along the vertical guide rail; the lifting actuating mechanism comprises a driving structure and a screw nut mechanism; the screw rod of the screw nut mechanism is rotationally arranged on the shaft runout detection mounting seat, and the screw rod is parallel to the vertical guide rail; the driving structure is used for driving the screw rod to rotate; and the nut of the screw nut mechanism is connected with the mounting piece.

4. The detection method using the motor assembly shaft detection device according to claim 3, characterized by, The shaft runout detection structure further comprises a coarse adjustment structure, which comprises a locking bolt, a vertical guide slot arranged on the mounting piece, a lifting slider sliding along the vertical guide slot, and a plurality of locking bolt holes arranged on the mounting piece in sequence from top to bottom, the locking bolt holes being in communication with the inner cavity of the vertical guide slot, and the locking bolt being arranged in one of the locking bolt holes to lock the lifting slider and the mounting piece together, and the nut of the lead screw nut mechanism being connected with the lifting slider.

5. The detection method using the motor assembly shaft detection device according to claim 3 or 4, characterized by, The driving structure is an electric motor or a hand wheel or a hand crank.

6. The detection method using the motor assembly shaft detection device according to claim 1 or 2 or 3 or 4, characterized by, The mounting piece further comprises a reference plate for cooperating with a shaft runout detection dial gauge or a dial gauge.

7. The detection method using the motor assembly shaft detection device according to claim 1 or 2 or 3 or 4, characterized by, A machine base is further provided, and the machine base is provided with horizontal guide rails, and the motor mounting seat slides along the horizontal guide rails.

8. The detection method using the motor assembly shaft detection device according to claim 7, characterized by, The motor mounting structure further comprises a motor mounting seat translation mechanism for driving the motor mounting seat to slide along the horizontal guide rails.

9. The detection method using the motor assembly shaft detection device according to claim 7, characterized by, The shaft runout detection mounting seat slides along the horizontal guide rails, and the shaft runout detection structure comprises a detection mounting seat translation mechanism for driving the shaft runout detection mounting seat to slide along the horizontal guide rails.

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