CN216978337U - Lower pressing ring detection device of motor output shaft - Google Patents

Abstract

A lower pressing ring detection device of a motor output shaft comprises a supporting rod, wherein a vertical moving assembly and a fixed seat connected with the vertical moving assembly are arranged on the supporting rod, and the vertical moving assembly is used for driving the fixed seat to move along the vertical direction; a pressing rod is connected to the fixed seat in a sliding manner along the vertical direction, and the bottom end of the pressing rod is used for pressing and covering the lower pressing ring to be detected; a baffle plate is fixed on the pressure rod, a light-transmitting slit is transversely arranged on the baffle plate, and a photoelectric switch is arranged on the fixed seat; when the device is not under the action of external force, the pressure rod is positioned at the lowest sliding position relative to the fixed seat, the light beam emitted by the photoelectric switch is positioned above the light-transmitting slit, and the shielding plate blocks the light beam of the photoelectric switch; the vertical moving assembly is used for driving the fixing seat to move downwards for a preset distance from an initial position, and if and only if the lower pressing ring on the shaft rod is installed in place, the light beam of the photoelectric switch penetrates through the light-transmitting slit to trigger the photoelectric switch. The utility model can detect whether the lower pressing ring on the shaft lever is installed in place.

Description

Lower pressing ring detection device of motor output shaft

Technical Field

The utility model relates to the technical field of motor manufacturing, in particular to a lower pressing ring detection device of a motor output shaft.

Background

The output shaft of the motor is one of important components of the motor, and the output shaft of some micro motors has a complex structure and can be assembled through a plurality of processes. As disclosed in chinese patent application publication No. CN108768110A, the present disclosure is directed to an assembly machine for a motor shaft, which includes various devices such as shaft rod installation, shaft rod detection, and lower pressing ring installation. As shown in fig. 1, the shaft of the motor output shaft includes a main shaft 11 and a gear mounting rod 12 coaxially connected to the main shaft 11 and mounting a gear 14, the gear mounting rod 12 has a size smaller than that of the main shaft 11, so that a chuck 10 is formed at an end surface of the main shaft 11, and when assembling such a motor output shaft, a lower pressing ring 13 needs to pass through the gear mounting rod 12 and be placed on the chuck 10. In order to detect whether the upper pressing ring is assembled on the output shaft of the motor, the patent also discloses a lower pressing ring detection device, but the lower pressing ring detection device detects the lower pressing ring through a detection probe, the detection probe can only detect whether the lower pressing ring is arranged on the output shaft of the motor and cannot detect whether the lower pressing ring is arranged in place, the lower pressing ring can be clamped on the gear installation rod 12 and is not correctly arranged on the clamping table 10, and when the condition occurs, the assembly of the output shaft of the motor is unqualified.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lower pressing ring detection device of a motor output shaft, which can detect whether a lower pressing ring on a shaft lever is installed in place or not.

In order to solve the problems, the utility model adopts the following technical scheme:

the embodiment of the utility model provides a lower pressing ring detection device of a motor output shaft, which comprises a supporting rod, wherein a vertical moving assembly and a fixed seat connected with the vertical moving assembly are arranged on the supporting rod, and the vertical moving assembly is used for driving the fixed seat to move along the vertical direction; the fixed seat is connected with a pressure lever in a sliding manner along the vertical direction, and the bottom end of the pressure lever is used for pressing and covering a lower pressure ring to be detected; a shielding plate is fixed on the pressure rod, a light-transmitting slit is transversely arranged on the shielding plate, and a photoelectric switch is arranged on the fixed seat; when the photoelectric switch is not under the action of external force, the pressure rod is positioned at the lowest sliding position relative to the fixed seat, the light beam emitted by the photoelectric switch is positioned above the light-transmitting slit, and the shielding plate blocks the light beam of the photoelectric switch; the vertical moving assembly is used for driving the fixing seat to move downwards for a preset distance from an initial position, and if and only if the lower pressing ring on the shaft rod is installed in place, a light beam of the photoelectric switch penetrates through the light-transmitting slit to trigger the photoelectric switch.

In some embodiments, when the fixing seat is in the initial position, a distance m between the bottom end of the pressing rod and a clamping table on the shaft rod, a thickness d of a lower pressing ring to be detected, a distance n between a light beam emitted by the photoelectric switch and the light-transmitting slit, and the preset distance p satisfy the following conditions: p is m-d + n; after the vertical moving assembly drives the fixing seat to move downwards from the initial position by a preset distance p, if the photoelectric switch is triggered, the lower pressing ring on the shaft rod is determined to be installed in place.

In some embodiments, when the lower pressing ring is detected, the pressing rod is arranged coaxially with the shaft rod, and an insertion groove into which the shaft rod can be inserted is arranged on the end face of the bottom end of the pressing rod.

In some embodiments, the fixing seat is provided with a through hole along the vertical direction, the pressure rod is arranged in the through hole in a penetrating manner, and the bottom end of the pressure rod extends out of the through hole; the perforations comprise a first perforation and a second perforation which are coaxially connected, the first perforation is positioned above the second perforation, and the aperture of the first perforation is larger than that of the second perforation; a convex clamping ring is arranged in the middle of the pressure rod, and the clamping ring is arranged in the first through hole and can slide along the axial direction of the first through hole; the outer diameter of the snap ring is larger than the aperture of the second through hole, and the snap ring abuts against the bottom of the first through hole when the snap ring is not acted by external force.

In some embodiments, a pressing block is fixed to the top of the fixing seat, a third through hole coaxially connected with the first through hole is formed in the pressing block, the aperture of the third through hole is smaller than that of the first through hole, the upper end of the pressing rod extends out of the third through hole, a spring is sleeved on the pressing rod, and two ends of the spring are respectively abutted to the pressing block and the clamping ring.

In some embodiments, the shielding plate is fixedly connected with the upper end of the pressure rod, the shielding plate is positioned above the pressing block, and the photoelectric switch is fixed on the pressing block.

In some embodiments, the supporting rod is provided with a limiting member for limiting the downward movement stroke of the fixing seat.

In some embodiments, the vertical moving assembly comprises a support plate fixed on the support rod, a vertical guide rail arranged on the support plate, a sliding block in sliding fit with the vertical guide rail, and a driver fixed on the support plate and connected with the fixed seat, wherein the sliding block is connected with the fixed seat.

In some embodiments, a positioning assembly for positioning a shaft placing seat for placing the shaft is further fixed on the support rod.

In some embodiments, the positioning assembly includes a connecting seat fixed on the support rod, a push rod disposed on the connecting seat and elastically stretchable in a direction perpendicular to an axial direction of the support rod, a positioning block connected to an end of the push rod, and two guide wheels disposed on the positioning block, and the two guide wheels are configured to abut against a side surface of the shaft rod placing seat to position the shaft rod placing seat.

The utility model has at least the following beneficial effects: the utility model sets a pressure lever which can slide along the vertical direction relative to the fixed seat on the fixed seat, the pressure lever is provided with a baffle plate, the baffle plate is provided with a light transmitting slit, the fixed seat is provided with a photoelectric switch, when the vertical moving component drives the fixed seat to move downwards, if the pressure lever is abutted to a lower pressure ring, the pressure lever can move upwards relative to the fixed seat, and further the distance between the light transmitting slit and the photoelectric switch can be changed.

Drawings

FIG. 1 is a schematic diagram of an output shaft of a motor in the prior art;

fig. 2 is a schematic structural diagram of a lower pressure ring detection device of a motor output shaft according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a lower pressing ring detection device of a motor output shaft at another view angle according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating a state change of a lower pressure ring detection device of a motor output shaft when detecting a lower pressure ring according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a fixing base according to an embodiment of the utility model;

FIG. 6 is a schematic structural diagram of a shielding plate, a pressing rod, a fixing seat and an optoelectronic switch according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a positioning assembly according to an embodiment of the utility model.

Wherein the reference numbers are: the clamping device comprises a clamping table 10, a spindle rod 11, a gear mounting rod 12, a lower pressing ring 13, a gear 14, a shaft rod placing seat 20, a supporting rod 100, a limiting member 110, a vertical moving assembly 200, a supporting plate 210, a vertical guide rail 220, a sliding block 230, a driver 240, a fixed seat 300, a first through hole 310, a second through hole 320, a pressing block 330, a third through hole 331, a pressing rod 400, a slot 410, a clamping ring 420, a first spring 430, a shielding plate 500, a light transmitting slit 510, a photoelectric switch 600, a light beam 610, a positioning assembly 800, a connecting seat 810, a push rod 820, a positioning block 830, a guide wheel 840 and a second spring 850.

Detailed Description

The present disclosure provides the following description with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but such details are to be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the literal meanings, but are used by the inventors to enable a clear and consistent understanding of the disclosure. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

The terms "having," "may have," "including," or "may include" used in various embodiments of the present disclosure indicate the presence of the respective functions, operations, elements, etc., disclosed, but do not limit additional one or more functions, operations, elements, etc. Furthermore, it is to be understood that the terms "comprises" or "comprising," when used in various embodiments of the present disclosure, are intended to specify the presence of stated features, integers, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, or groups thereof.

It will be understood that when an element (e.g., a first element) is "connected" to another element (e.g., a second element), the element can be directly connected to the other element or intervening elements (e.g., a third element) may be present between the element and the other element.

An embodiment of the present invention provides a device for detecting a pressing ring of a motor output shaft, as shown in fig. 2 and 3, the device includes a supporting rod 100, wherein a vertical moving assembly 200 and a fixing base 300 connected to the vertical moving assembly 200 are disposed on the supporting rod 100, and the vertical moving assembly 200 is used for driving the fixing base 300 to move in a vertical direction. The fixed base 300 is slidably connected with a press rod 400 along the vertical direction, so that the press rod 400 can move along the vertical direction relative to the fixed base 300. When detecting the lower clamping ring of motor output shaft, the lower clamping ring on the axostylus axostyle needs to move to the below of depression bar 400, and vertical removal subassembly 200 is used for driving fixing base 300 and moves down along vertical direction, and the bottom of depression bar 400 is used for the gland to wait to detect on the lower clamping ring.

The pressing rod 400 is fixed with a shielding plate 500, the shielding plate 500 is transversely provided with a light-transmitting slit, and the extending direction of the light-transmitting slit can be vertical to the vertical direction. The fixing base 300 is provided with a photoelectric switch 600, the photoelectric switch 600 can be a groove-type photoelectric switch, and the shielding plate 500 moves between two support arms of the groove-type photoelectric switch. The photoelectric switch 600 can emit light beams in a vertical direction, and the width of the light-transmitting slit can be set to just allow the light beams to pass through so as to improve the detection precision.

Since the pressing rod 400 is connected with the fixing base 300 in a sliding manner along the vertical direction, the pressing rod 400 has a limited sliding stroke relative to the fixing base 300. When the external force is not applied, the pressing rod 400 slides downwards under the action of gravity to be located at the lowest sliding position relative to the fixing base 300, and when the pressing rod 400 is located at the lowest sliding position relative to the fixing base 300, the light beam emitted by the photoelectric switch 600 is located above the light-transmitting slit, and the shielding plate 500 blocks the light beam of the photoelectric switch 600, so that the photoelectric switch 600 is not triggered.

When the pressing ring of the motor output shaft is not detected, the fixing base 300 is at an initial position relative to the supporting rod 100, and after the detection is completed each time, the vertical moving assembly 200 drives the fixing base 300 to return to the initial position to wait for the next detection. When the lower pressing ring of the motor output shaft is detected, the vertical moving assembly 200 is used for driving the fixed seat 300 to move downwards for a preset distance from an initial position, if the pressing rod 400 abuts against the lower pressing ring and the fixed seat 300 continues to move downwards, the pressing rod 400 can move upwards relative to the fixed seat 300, and further the distance between the light-transmitting slit and the photoelectric switch 600 can be changed, because the light-transmitting slit is narrow in width, only when the lower pressing ring on the shaft is installed in place, the light beam of the photoelectric switch 600 can penetrate through the light-transmitting slit to trigger the photoelectric switch 600, and if the photoelectric switch 600 is not triggered, the lower pressing ring on the shaft is not installed in place, so that whether the lower pressing ring on the shaft is installed in place or not can be detected.

In some embodiments, as shown in fig. 4, when the fixing seat is in the initial position, a distance m between the bottom end of the pressing rod 400 and a clamping table on the shaft (i.e., the top surface of the spindle shaft 11), a thickness d of the lower pressing ring 13 to be detected, a distance n between the light beam 610 emitted by the photoelectric switch and the light-transmitting slit 510, and a preset distance p satisfy the following conditions: p is m-d + n.

Because the photoelectric switch is arranged on the fixed seat, if the fixed seat moves downwards for the preset distance p, the light beam 610 emitted by the photoelectric switch also correspondingly moves downwards for the preset distance p. If the lower pressing ring 13 is installed on the shaft rod, the pressing rod 400 will press against the lower pressing ring 13, and the pressing rod 400 will move upward relative to the fixing base 300, and if the lower pressing ring 13 is installed in place, when the fixing base is at the initial position, the distance s between the bottom end of the pressing rod 400 and the lower pressing ring 13 is equal to m-d, which is exactly equal to the distance n between the light beam 610 and the light-transmitting slit 510, so that after the fixing base moves downward by the preset distance p, the light beam 610 of the photoelectric switch can pass through the light-transmitting slit to trigger the photoelectric switch. If the lower pressing ring 13 is not mounted in place, i.e. the lower pressing ring 13 is clamped on the gear mounting rod 12, the distance s between the bottom end of the actual pressing rod 400 and the lower pressing ring 13 is smaller than the difference between m and d, and then the light beam 610 is still blocked by the blocking plate 500, and the photoelectric switch cannot be triggered.

It should be noted that the above conditional equation is not an absolute equation, and a person skilled in the art should naturally consider reasonable errors when applying the above conditional equation.

In some embodiments, as shown in fig. 5, when the lower pressing ring is detected, the pressing rod 400 is disposed coaxially with the shaft, and the end surface of the bottom end of the pressing rod 400 is provided with a slot 410 into which the shaft can be inserted, specifically, the inner diameter of the slot 410 should be larger than the outer diameter of the shaft.

The significance of this is that when detecting the lower pressing ring, if the lower pressing ring is not installed on the shaft, the shaft can be inserted into the slot 410, and the pressing rod 400 can move further to the lower side of the gear installation rod 12 along with the fixing base 300, so that the distance from the light beam of the photoelectric switch 600 to the light-transmitting slit does not decrease, or the decreased value is smaller than the distance, and thus the photoelectric switch 600 still cannot be triggered. That is, when the shaft rod is not provided with the lower pressing ring, the photoelectric switch 600 also outputs an NG signal, which indicates that the output shaft of the motor is not qualified.

In some embodiments, a sliding rail extending vertically may be disposed on a side surface of the fixing base, a sliding block is slidably connected to the sliding rail, and the pressing rod is connected to the sliding block to realize the sliding connection between the pressing rod and the fixing base. When the sliding block is not acted by external force, the sliding block slides to the lowest end of the sliding rail.

In some embodiments, as shown in fig. 5 and 6, the fixing base 300 is provided with a through hole in a vertical direction, and the pressing rod 400 is inserted into the through hole and can move in the through hole in the vertical direction. The bottom end of the plunger 400 extends out of the through hole so that the plunger 400 can be pressed on the lower pressing ring to be detected. The through holes include a first through hole 310 and a second through hole 320 which are coaxially connected, the first through hole 310 is located above the second through hole 320, and the aperture of the first through hole 310 is larger than that of the second through hole 320, which is equivalent to forming a step structure at the bottom of the first through hole 310. The middle of the pressure lever 400 is provided with a convex snap ring 420, the snap ring 420 is arranged in the first through hole 310 and can slide along the axial direction of the first through hole 310, the part of the pressure lever 400 above the snap ring 420 is arranged in the first through hole 310 in a penetrating manner, the part of the pressure lever 400 below the snap ring 420 is arranged in the second through hole 320 in a penetrating manner, and the bottom end of the pressure lever 400 extends out of the second through hole 320. The outer diameter of the snap ring 420 is larger than the diameter of the second through hole 320, and when no external force is applied, the snap ring 420 abuts against the bottom of the first through hole 310 and cannot fall down from the through hole, thereby achieving the sliding connection between the plunger 400 and the fixing base 300.

Furthermore, a pressing block 330 is fixed on the top of the fixing base 300, a third through hole 331 coaxially connected with the first through hole 310 is formed in the pressing block 330, the aperture of the third through hole 331 is smaller than that of the first through hole 310, the upper end of the pressing rod 400 extends out of the third through hole 331, a first spring 430 is sleeved on the pressing rod 400, and two ends of the first spring 430 are respectively abutted to the pressing block 330 and the snap ring 420. When the pressing rod 400 moves upward relative to the fixing base 300, the first spring 430 is compressed, and further, downward pressure is applied to the snap ring 420, so that the pressing rod 400 is tightly pressed on the downward pressing ring of the shaft rod, and the pressing rod 400 is prevented from jumping upward to trigger the photoelectric switch 600 by mistake, and the detection accuracy is improved.

In this embodiment, the pressing piece 330 functions to provide a holding force to the first spring 430, so that the pressing piece 330 can be set to a small size. The shielding plate 500 is fixedly connected to the upper end of the pressing rod 400, the shielding plate 500 is located above the pressing block 330, and the photoelectric switch 600 can be fixed to the top of the fixing base 300.

In other embodiments, the pressing block 330 may be relatively larger in size, the optoelectronic switch 600 is directly fixed on the pressing block 330, the shielding plate 500 is located above the pressing block 330, and the shielding plate 500 is fixedly connected to the upper end of the pressing rod 400, so that the shielding plate 500 can block the light beam of the optoelectronic switch 600.

In some embodiments, as shown in fig. 3, the supporting rod 400 is provided with a limiting member 110 for limiting the downward movement of the fixing base 300. The limiting member 110 may be a travel switch, the travel switch is electrically connected to the controller, the vertical moving assembly 200 is also electrically connected to the controller, when the fixed base 300, the pressing block 330 or the connecting member on the pressing block 330 touches the travel switch, the travel switch is triggered, the controller sends a control signal to the vertical moving assembly 200, and the vertical moving assembly 200 stops driving the fixed base 300 to move downward. This can prevent the vertical moving assembly 200 from driving the fixing base 300 to move downward for an excessive distance, which may damage the motor output shaft below the pressing rod 400 or cause damage to the lower pressing ring detection device of the motor output shaft. The limiting member 110 may be directly connected to the supporting rod 100, or may be connected to the supporting rod 100 through the vertical moving assembly 200.

The controller can control the action time of the vertical moving assembly 200 according to a preset control program, so that the fixing seat 300 is guaranteed to move downwards by a preset distance p when the lower pressing ring is detected.

The optoelectronic switch 600 of the above embodiment may also be connected to a controller, and the optoelectronic switch 600 may send a detection signal to the controller to inform the controller of the detection result. The controller can be connected with the alarm, and when the photoelectric switch 600 detects that the lower pressing ring on the shaft rod is not installed in place, the controller can send a control signal to the alarm to control the alarm to give an alarm.

In some embodiments, as shown in fig. 2 and 3, the vertical moving assembly 200 includes a supporting plate 210 fixed on the supporting rod 100, a vertical guide rail 220 provided on the supporting plate 210, a sliding block 230 slidably engaged with the vertical guide rail 220, and a driver 240 fixed on the supporting plate 210 and connected to the fixing base 300, the sliding block 230 being connected to the fixing base 300. The driver 240 drives the fixing base 300 to move in the vertical direction, and the sliding fit between the slider 230 and the vertical guide rail 220 provides a guiding effect for the movement of the fixing base 300, so that the fixing base 300 can stably move in the vertical direction. Wherein the driver 240 may be an air cylinder.

In some embodiments, the shaft lever of the motor output shaft may be placed on the shaft lever placing seat, the shaft lever placing seat is provided with a placing hole, and the lower end of the shaft lever may be inserted into the placing hole. The axostylus axostyle is placed the seat and can be fixed on the carousel, and actuating mechanism orders about the carousel and rotates for the axostylus axostyle is placed the seat and is removed the below to the depression bar, detects the lower clamping ring on the depression bar with the lower clamping ring detection device who supplies the motor output shaft of this embodiment.

As shown in fig. 2 and 3, a positioning assembly 800 for positioning the shaft holder 20 for holding a shaft is further fixed to the support rod 100. The positioning assembly 800 can keep the shaft lever placing base 20 at its position without shaking, so that the pressing rod 400 can be accurately butted with the shaft lever to ensure the smooth operation of the detection process.

Further, as shown in fig. 7, the positioning assembly includes a connecting base 810 fixed on the supporting rod, a push rod 820 disposed on the connecting base 810 and elastically telescopic in a direction perpendicular to the axial direction of the supporting rod, a positioning block 830 connected to an end of the push rod 820, and two guide wheels 840 disposed on the positioning block 830. When the axle rod placing seat 20 rotates to the lower part of the pressure rod, the axle rod placing seat 20 can be abutted to the guide wheel 840 first, thrust is applied to the guide wheel 840, the positioning block 830 moves towards the connecting seat 810, then the axle rod placing seat 20 is clamped between the two guide wheels 840, and the two guide wheels 840 abut against the side surface of the axle rod placing seat 20 to position the axle rod placing seat 20.

The two guide wheels 840 can rotate relative to the positioning block 830, so that the shaft rod placing seat 20 can move between the two guide wheels 840. The connecting seat 810 can be provided with a guide hole penetrating along the axial direction of the vertical support rod, a convex ring is arranged in the guide hole, the push rod 820 penetrates through the guide hole and penetrates through the convex ring, the push rod 820 is sleeved with a second spring 850, and two ends of the second spring 850 are respectively abutted against the convex ring and the positioning block 830, so that the push rod 820 can elastically stretch and retract.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the utility model is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.

Claims (10)

1. The utility model provides a lower clamping ring detection device of motor output shaft which characterized in that: the device comprises a supporting rod, wherein a vertical moving assembly and a fixed seat connected with the vertical moving assembly are arranged on the supporting rod, and the vertical moving assembly is used for driving the fixed seat to move along the vertical direction; the fixed seat is connected with a pressure lever in a sliding manner along the vertical direction, and the bottom end of the pressure lever is used for pressing and covering a lower pressure ring to be detected; a shielding plate is fixed on the pressure rod, a light-transmitting slit is transversely arranged on the shielding plate, and a photoelectric switch is arranged on the fixed seat; when the photoelectric switch is not under the action of external force, the pressure rod is positioned at the lowest sliding position relative to the fixed seat, the light beam emitted by the photoelectric switch is positioned above the light-transmitting slit, and the shielding plate blocks the light beam of the photoelectric switch; the vertical moving assembly is used for driving the fixing seat to move downwards for a preset distance from an initial position, and if and only if the lower pressing ring on the shaft rod is installed in place, a light beam of the photoelectric switch penetrates through the light-transmitting slit to trigger the photoelectric switch.

2. The device for detecting the pressing ring of the output shaft of the motor according to claim 1, wherein when the fixing seat is at the initial position, a distance m between the bottom end of the pressing rod and a clamping table on the shaft rod, a thickness d of the pressing ring to be detected, a distance n between a light beam emitted by the photoelectric switch and the light-transmitting slit, and the preset distance p satisfy the following conditions: p is m-d + n; after the vertical moving assembly drives the fixing seat to move downwards from the initial position by a preset distance p, if the photoelectric switch is triggered, the lower pressing ring on the shaft rod is determined to be installed in place.

3. The apparatus for detecting the pressing ring of the output shaft of the motor according to claim 1, wherein: when the lower pressing ring is detected, the pressing rod and the shaft rod are coaxially arranged, and an inserting groove for inserting the shaft rod is formed in the end face of the bottom end of the pressing rod.

4. The apparatus for detecting the pressing ring of the output shaft of the motor according to claim 1, wherein: the fixed seat is provided with a through hole along the vertical direction, the pressure rod is arranged in the through hole in a penetrating manner, and the bottom end of the pressure rod extends out of the through hole; the perforations comprise a first perforation and a second perforation which are coaxially connected, the first perforation is positioned above the second perforation, and the aperture of the first perforation is larger than that of the second perforation; the middle part of the pressure lever is provided with a convex clamping ring which is arranged in the first through hole and can slide along the axial direction of the first through hole; the outer diameter of the snap ring is larger than the aperture of the second through hole, and the snap ring abuts against the bottom of the first through hole when the snap ring is not acted by external force.

5. The apparatus for detecting the pressing ring of the output shaft of the motor according to claim 4, wherein: the top of fixing base is fixed with the briquetting, be provided with the third perforation that links to each other with first perforation is coaxial on the briquetting, the fenestrate aperture of third is less than the fenestrate aperture of first perforation, stretch out the upper end of depression bar the third is perforated, the spring has been cup jointed on the depression bar, the both ends of spring butt briquetting and snap ring respectively.

6. The apparatus for detecting the pressing ring of the output shaft of the motor according to claim 5, wherein: the shielding plate is fixedly connected with the upper end of the pressing rod and located above the pressing block, and the photoelectric switch is fixed on the pressing block.

7. The apparatus for detecting the pressing ring of the output shaft of the motor according to any one of claims 1 to 6, wherein: and the supporting rod is provided with a limiting part for limiting the downward movement stroke of the fixing seat.

8. The apparatus for detecting the pressing ring of the output shaft of the motor according to any one of claims 1 to 6, wherein: the vertical moving assembly comprises a supporting plate fixed on the supporting rod, a vertical guide rail arranged on the supporting plate, a sliding block in sliding fit with the vertical guide rail and a driver fixed on the supporting plate and connected with the fixing seat, and the sliding block is connected with the fixing seat.

9. The apparatus for detecting the pressing ring of the output shaft of the motor according to any one of claims 1 to 6, wherein: and the support rod is also fixedly provided with a positioning component of the shaft lever placing seat for positioning and placing the shaft lever.

10. The apparatus of claim 9, wherein: the positioning assembly comprises a connecting seat fixed on the supporting rod, a push rod arranged on the connecting seat and capable of elastically stretching along the axial direction of the vertical supporting rod, a positioning block connected with the end part of the push rod and two guide wheels arranged on the positioning block, wherein the two guide wheels are used for abutting against the side surface of the shaft rod placing seat to place the seat with the positioning shaft rod.

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