CN219757175U

CN219757175U - Axle diameter quick-detecting device

Info

Publication number: CN219757175U
Application number: CN202321325206.2U
Authority: CN
Inventors: 任丽波
Original assignee: Ningbo Renying Seiko Co ltd
Current assignee: Ningbo Renying Seiko Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-09-26
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to the technical field of inspection tools, in particular to a shaft diameter quick inspection device, which comprises: the utility model relates to a transmission shaft, which comprises a base, a detection seat, a detection assembly, a first rotating member and a supporting assembly, wherein the detection seat is provided with a groove, the detection assembly is arranged on the detection seat and comprises a dial indicator, a probe of the dial indicator faces the groove, the first rotating member is rotatably arranged on the base, the supporting assembly comprises a sliding member, the sliding member is slidably arranged on the first rotating member in the height direction of the seat body combination, and after the first rotating member rotates by a preset angle, the sliding member is positioned under the groove or is arranged in a dislocation manner with the groove.

Description

Axle diameter quick-detecting device

Technical Field

The utility model relates to the technical field of inspection tools, in particular to a shaft diameter quick inspection device.

Background

The gauge is a simple tool for controlling various sizes of products such as aperture and the like in industrial production enterprises, and improves production efficiency and control quality.

The existing transmission shaft is characterized in that one end of the transmission shaft is provided with a matching part 90, the matching part 90 is in a shaft shape, because the matching part 90 is used for being matched with an external bearing, the radial dimensional tolerance of the matching part 90 is required to be accurately controlled, in small-batch production, the outer diameter of the matching part 90 is usually measured by adopting a vernier caliper with a meter, and in mass production, the requirement of an enterprise on the inspection efficiency is difficult to meet by adopting a measuring scale for measurement.

Furthermore, as shown in fig. 2, the shaft diameter quick-detecting device for detecting the matching portion 90 on the transmission shaft shown in fig. 1 includes a base 91, an extension 92 and a detecting seat 93, the detecting seat 93 has a U-shaped groove 931, the base 91 has a notch 911, a supporting protrusion 912 is formed on the bottom wall of the notch 911, a dial indicator 94 is fixedly mounted on the detecting seat 93, one end of the transmission shaft facing away from the matching portion 90 abuts against the supporting protrusion 912, the matching portion 90 extends into the U-shaped groove 931, and a probe of the dial indicator 94 abuts against a side face of the matching portion 90. If the diameter of the mating portion 90 is greater than a predetermined size, the mating portion 90 cannot extend into the U-shaped groove 931; in addition, it should be emphasized that, the dial indicator 94 is preset to be zero, when the engaging portion 90 extends into the U-shaped groove 931 and then the rotating shaft is rotated, the pointer of the dial indicator 94 is jumped according to the actual size of the engaging portion 90, and if the jumped range of the dial indicator 94 is within the tolerance of the engaging portion 90, the diameter of the shaft is qualified, and the supporting protrusion 912 is provided to reduce the contact area between the end of the shaft and the base 91 so as to facilitate the rotation of the shaft. However: because the height of the supporting protrusion 912 is fixed, if the length dimension of the transmission shaft is too large, when an inspector needs to place the transmission shaft on the supporting protrusion 912 and place the matching portion 90 in the U-shaped groove 931, the matching portion 90 cannot be placed in the U-shaped groove 931 due to the too large length dimension of the transmission shaft, that is, the distance from the top of the supporting protrusion 912 to the bottom of the U-shaped groove 931 is smaller than the distance from one end of the transmission shaft to the matching portion 90, thereby limiting the application range of the axle diameter quick inspection device; in addition, the existing shaft diameter quick detection device can only detect a transmission shaft with a specific size, and is poor in universality.

Therefore, the high-speed quick-detecting device for the shaft diameter is provided, the height of the supporting part is adjustable, the device is suitable for transmission shafts with various specifications, and the requirement of the shaft diameter quick-detecting device with better universality exists.

Disclosure of Invention

The utility model mainly aims to provide a shaft diameter quick-checking device, wherein the shaft diameter quick-checking device comprises a base body combination, a checking component, a first rotating piece and a supporting component, the base body combination comprises a base and a checking base, the checking base is provided with a groove with an opening, the checking component is arranged on the checking base, the checking component comprises a dial indicator, a probe of the dial indicator faces the groove, the first rotating piece is rotatably arranged on the base, the supporting component comprises a sliding piece, the sliding piece is slidably arranged on the first rotating piece in the height direction of the base body combination, after the first rotating piece rotates by a preset angle, the sliding piece is located under the groove or is arranged in a staggered mode with the groove, compared with the prior art, the matching part of a transmission shaft can be conveniently stretched into the groove by rotating the first rotating piece, the matching part can still be adjusted in a vertical moving mode when the length dimension of the transmission shaft is longer, and the universal transmission shaft can be better in supporting performance.

The utility model further provides a shaft diameter quick detection device, wherein the base body combination further comprises a first extension piece and a second extension piece, the first extension piece and the second extension piece are both positioned between the base and the detection seat, the first extension piece is fixedly connected with the base, the second extension piece is connected with the detection seat, the second extension piece is arranged on the first extension piece in a sliding mode, and the second extension piece is arranged on the first extension piece in a sliding mode to achieve long-stroke adjustment of the distance between the base and the detection seat, so that the device has the advantage of being good in universality.

The utility model further aims to provide a shaft diameter quick-detecting device, wherein the seat body combination further comprises a mounting seat, the mounting seat is positioned between the second extension piece and the detecting seat, the second extension piece is fixedly connected with the mounting seat, the mounting seat is in threaded connection with the detecting seat, the detecting seat is in threaded connection with the detecting seat, and the detecting seat can be replaced to detect matching parts with different diameters, so that the shaft diameter quick-detecting device has the advantage of being good in universality.

In order to achieve at least one of the above objects, the present utility model provides a shaft diameter rapid inspection device, wherein the shaft diameter rapid inspection device comprises:

the base body assembly comprises a base and a detection base, and the detection base is provided with a groove with an opening; and

the detection assembly is arranged on the detection seat and comprises a dial indicator, and a probe of the dial indicator faces the groove; and

the first rotating piece is rotatably arranged on the base; and

the supporting component comprises a sliding part which is slidably arranged on the first rotating part in the height direction of the seat body combination, and the sliding part is positioned under the groove or is arranged in a dislocation manner with the groove after the first rotating part rotates for a preset angle.

In one or more embodiments of the present utility model, the base has a first notch, and when the first rotating member rotates by a predetermined angle, the first rotating member is disposed in the first notch or is separated from the first notch.

In one or more embodiments of the present utility model, a rack is disposed at an end of the sliding member facing away from the groove, the sliding member is fixedly connected with the rack, the supporting assembly further includes a second rotating member rotatably mounted on the first rotating member, and a gear is disposed at an end of the second rotating member adjacent to the sliding member, and the gear is meshed with the rack.

In one or more embodiments of the present utility model, the base assembly further includes a first extension member and a second extension member, where the first extension member and the second extension member are both located between the base and the detection seat, and the first extension member is fixedly connected to the base, the second extension member is connected to the detection seat, and the second extension member is slidably disposed on the first extension member.

In one or more embodiments of the present utility model, the base assembly further includes a mounting base, the mounting base is located between the second extension piece and the detection base, the second extension piece is fixedly connected with the mounting base, and the mounting base is in threaded connection with the detection base.

In one or more embodiments of the present utility model, a first protrusion is disposed at an end of the mounting base facing away from the second extension member, an embedded hole is disposed on a surface of the detection base adjacent to the mounting base, and the first protrusion extends into the embedded hole.

In one or more embodiments of the present utility model, the first extension member has a sliding hole, the second extension member is slidably disposed in the sliding hole, a limiting slot is formed on a wall of the sliding hole, the second extension member has a second protrusion, and the second protrusion is disposed in the limiting slot.

In one or more embodiments of the present utility model, the detecting assembly further includes an extension member and a moving member, the extension member is connected to the detecting seat, the moving member is slidably disposed on the extension member, the dial indicator is fixedly mounted on the moving member, and the dial indicator is close to or far from the groove after the moving member slides a predetermined distance.

In one or more embodiments of the present utility model, an end of the base facing away from the detection seat has a plurality of legs.

In the embodiment of the utility model, the shaft diameter quick detection device for detecting the matching part of the transmission shaft comprises a base, a detection seat, a detection assembly, a first rotating member and a supporting assembly, wherein the detection seat is provided with a groove, the detection assembly is arranged on the detection seat and comprises a dial indicator, a probe of the dial indicator faces the groove, the first rotating member is rotatably arranged on the base, the supporting assembly comprises a sliding member, the sliding member is slidably arranged on the first rotating member in the height direction of the seat assembly, and when the first rotating member rotates by a preset angle, the sliding member is positioned under the groove or is arranged in dislocation with the groove.

Drawings

These and/or other aspects and advantages of the present utility model will become more apparent and more readily appreciated from the following detailed description of the embodiments of the utility model, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 illustrates a schematic structural view of a prior art propeller shaft;

FIG. 2 illustrates a schematic diagram of a prior art shaft diameter quick inspection device;

FIG. 3 illustrates a schematic diagram of a shaft diameter quick-detecting device according to an embodiment of the present utility model;

FIG. 4 illustrates a schematic structural view of a support assembly;

FIG. 5 illustrates a schematic structural view of the first rotating member;

FIG. 6 illustrates an exploded view of a shaft diameter quick inspection device according to an embodiment of the present utility model;

fig. 7 illustrates a schematic structural diagram of the detection assembly.

Description of the embodiments

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

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Although ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used merely to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, or groups thereof.

Summary of the application

According to the existing shaft diameter quick detection device, due to the fact that the height of the supporting protrusion is fixed, when the length dimension of the transmission shaft is in error, if the length of the transmission shaft is too long, when an inspector needs to place the transmission shaft on the supporting protrusion and place the matching part in the U-shaped groove, the matching part cannot be placed in the U-shaped groove due to the fact that the length dimension of the transmission shaft is too large, namely the distance from the top of the supporting protrusion to the bottom of the U-shaped groove is smaller than the distance from one end of the transmission shaft to the matching part, and therefore the application range of the shaft diameter quick detection device is limited; in addition, the existing shaft diameter quick detection device can only detect a specific transmission shaft, and is poor in universality.

Based on the technical problems, the utility model provides a shaft diameter quick detection device, wherein the shaft diameter quick detection device has a simple structure, does not relate to complex manufacturing processes and expensive materials, has higher economical efficiency, is easy to produce for manufacturers, has low cost, is more beneficial to control the production cost, and is further beneficial to product popularization and use.

An exemplary rapid shaft diameter detection device comprises a shaft diameter detection device,

referring to fig. 3 to 7, a shaft diameter quick inspection device according to a preferred embodiment of the present utility model is used for inspecting a transmission shaft as shown in fig. 1, the transmission shaft has a mating portion 90, and the shaft diameter quick inspection device includes a base assembly 10 and a inspecting assembly 20.

Specifically, as shown in fig. 3, the base assembly 10 includes a base 101 and a detection seat 102, the detection seat 102 has a groove 1021 with an opening, the groove 1021 with an opening is a U-shaped groove, the width of the U-shaped groove is equal to the maximum limit size of the mating portion 90, when the mating portion 90 of the transmission shaft is detected, the mating portion 90 extends into the groove 1021, at this time, the side surface of the mating portion 90 is attached to the groove surface of the groove 1021, if the mating portion 90 can extend into the groove 1021, the size of the mating portion 90 representing the transmission shaft is smaller than the maximum limit size, and then, a inspector only needs to observe whether the mating portion 90 is within the minimum limit size range of the limit, so as to determine whether the size of the transmission shaft is qualified; it should be added that if the engaging portion 90 cannot extend into the recess 1021, the engaging portion 90 of the transmission shaft is not qualified in size.

In addition, as shown in fig. 3, the detecting assembly 20 is mounted on the detecting seat 102, the detecting assembly 20 includes a dial gauge 201, the probe of the dial gauge 201 faces the groove 1021, after the matching portion 90 extends into the groove 1021, the probe of the dial gauge 201 is attached to the side face of the matching portion 90, and whether the matching portion 90 is within the rated minimum limit size is checked by the dial gauge 201.

It should be noted that, in order to ensure the accuracy of the inspection, when the dial indicator 201 measures the fitting portion 90, the dial indicator 201 needs to measure a plurality of points on a circle of the fitting portion 90, in the prior art, the transmission shaft is rotated, and in order to facilitate the rotation of the transmission shaft, in the prior art, a supporting protrusion is provided on the base 101, so that the supporting protrusion extends into a central hole on a bottom wall of the transmission shaft, and the transmission shaft rotates, but because the supporting protrusion is highly fixed, when the length dimension of the transmission shaft is longer, the fitting portion 90 of the transmission shaft is or is difficult to extend into the U-shaped groove, which limits the application of the axle diameter rapid detection device.

In view of this, in the embodiment of the present utility model, as shown in fig. 3 and 4, the shaft diameter quick inspection device further includes a first rotating member 30 and a supporting assembly 40, the first rotating member 30 is rotatably mounted on the base 101, the supporting assembly 40 includes a sliding member 401, the sliding member 401 is slidably disposed on the first rotating member 30 in the height direction of the base assembly 10, and when the first rotating member 30 rotates by a predetermined angle, the sliding member 401 is located under the recess 1021 or is offset from the recess 1021. The slider 401 is used to support the end of the drive shaft that is remote from the end of the mating portion 90.

Specifically, as shown in fig. 3, the base 101 has a first notch 1011, and when the first rotating member 30 rotates by a predetermined angle, the first rotating member 30 is placed in the first notch 1011 or is separated from the first notch 1011. In this embodiment, a cross section of the first notch 1011 and the first rotating member 30 is fan-shaped.

It should be noted that, before the inspector stretches the mating portion 90 into the groove 1021, the first rotating member 30 rotates by a predetermined angle and is separated from the first notch 1011, at this time, the inspector may conveniently stretch the mating portion 90 into the groove 1021, without worrying about whether the end of the transmission shaft away from the mating portion 90 interferes with the sliding member 401 in the process of stretching the mating portion 90 into the groove 1021, after the mating portion 90 stretches into the groove 1021, the inspector makes the first rotating member 30 be placed in the first notch 1011, and adjusts the height of the sliding member 401 according to the distance between the end surface of the end of the transmission shaft away from the mating portion 90 and the top surface of the first rotating member 30, so that the sliding member 401 abuts against the end surface of the transmission shaft. It is easy to see that, in the embodiment of the present utility model, by rotating the first rotating member 30, it is convenient for an inspector to insert the mating portion 90 into the recess 1021; by making the sliding member 401 height-adjustable, when the length of the transmission shaft is larger or shorter, the sliding member 401 can be made to support the end face of the transmission shaft by adjusting the height of the sliding member 401 so that the inspection personnel can rotate the transmission shaft. It should be further added that the foregoing transmission shaft has a larger or shorter length, which may be caused by the deviation of the precision of the products with the same specification and model, or may be similar products with the same batch, that is, the radial dimensions of the mating parts 90 of the two transmission shafts are the same, and only the length dimensions of the transmission shafts are different, for such similar-sized products, another shaft diameter quick detection device with a specific dimension must be adopted in the prior art for detection.

Further, in order to realize that the sliding member 401 is slidably disposed on the first moving member in the height direction of the base assembly 10, as shown in fig. 5, the first rotating member 30 has a through chute 301, and the sliding member 401 is slidably disposed in the chute 301, as shown in fig. 4, one end of the sliding member 401 facing away from the recess 1021 is provided with a rack 4011, and the sliding member 401 is fixedly connected with the rack 4011, and the fixed connection manner includes, but is not limited to, welding; the support assembly 40 further includes a second rotating member 402, where the second rotating member 402 is rotatably mounted on the first rotating member 30 through a bearing, and a gear 4021 is disposed at an end of the second rotating member 402 near the sliding member 401, and the gear 4021 is fixedly mounted on the second rotating member 402, and the gear 4021 is meshed with the rack 4011. When the inspector rotates the second rotating member 402, the gear 4021 rotates and drives the rack 4011 to move, and the sliding member 401 fixedly connected to the rack 4011 slides in the height direction.

In addition, when the shaft diameter of the mating portion 90 of the transmission shaft with another standard size needs to be tested, assuming that the overall length of the transmission shaft is greater than the moving stroke of the sliding member 401, the sliding member 401 is only adjusted to prevent the mating portion 90 from extending into the recess 1021, so that the distance between the base 101 and the testing seat 102 can be adjusted to be suitable for transmission shafts with different length standards, as shown in fig. 3, the base assembly 10 further includes a first extension member 103 and a second extension member 104, where the first extension member 103 and the second extension member 104 are both located between the base 101 and the testing seat 102, and the first extension member 103 is fixedly connected with the base 101, and the second extension member 104 is connected with the testing seat 102, and the second extension member 104 is slidably disposed on the first extension member 103.

Specifically, as shown in fig. 6, the first extension member 103 has a sliding hole 1031, and the second extension member 104 is slidably disposed in the sliding hole 1031. In addition, to fix the height of the second extension piece 104, as shown in fig. 3 and 6, the shaft diameter quick inspection device further includes a fastener 105, where the fastener 105 is screwed with the first extension piece 103 and extends into the sliding hole 1031 and abuts against or is separated from the side wall of the second extension piece 104, when the fastener 105 abuts against the side wall of the second extension piece 104, the position of the second extension piece 104 relative to the first extension piece 103 is fixed, and conversely, the fastener 105 is unscrewed and the fastener 105 is separated from the side wall of the second extension piece 104, so that the second extension piece 104 slides in the sliding hole 1031 and is adjusted to a predetermined height.

It should be noted that, because the second extension 104 is connected to the detecting seat 102, if the second extension 104 rotates in the sliding hole 1031, the position of the groove 1021 rotates along with it and is always dislocated with the sliding piece 401, so as to avoid this phenomenon, that is, to prevent the second extension 104 from rotating in the sliding hole 1031, as shown in fig. 6, a limiting slot 1032 is formed on the hole wall of the sliding hole 1031, and the second extension 104 has a second protrusion 1041, where the second protrusion 1041 is disposed in the limiting slot 1032 and is attached to the slot surface of the limiting slot 1032. The second extension 104 is prevented from rotating in the sliding hole 1031 by the provision of the second protrusion 1041 and the stopper groove 1032.

It should be noted that, in the embodiment of the present utility model, the test socket 102 in the prior art is divided into two parts, that is, as shown in fig. 3 and 6, the socket assembly 10 further includes a mounting socket 106, the mounting socket 106 is located between the second extension piece 104 and the test socket 102, and the second extension piece 104 is connected with the test socket 102 through the mounting socket 106, specifically, the second extension piece 104 is fixedly connected with the mounting socket 106 in a welding manner, and the mounting socket 106 is in threaded connection with the test socket 102. In testing the mating portions 90 of different radial dimensions, an inspector only needs to remove the bolts on the inspection seat 102, and mount the inspection seat 102 having the groove width dimension 1021 on the mounting seat 106 in a threaded manner, so as to be suitable for the mating portions 90 of different radial dimensions.

Further, when a new detecting seat 102 is mounted on the mounting seat 106, in order to achieve pre-fixing of the detecting seat 102, so that a detecting person can screw a screw, as shown in fig. 6, one end of the mounting seat 106, which faces away from the second extension piece 104, is provided with a first protrusion 1061, one surface of the detecting seat 102, which is close to the mounting seat 106, is provided with an embedded hole (not shown in the drawing), and the first protrusion 1061 extends into the embedded hole, so that pre-fixing before screwing is achieved by making the first protrusion 1061 extend into the embedded hole 1022.

Further, in order to enable the probe of the dial gauge 201 to be always attached to the side of the mating portion 90 when the radial dimension of the mating portion 90 varies, the dial gauge 201 should be movably positioned, and for this purpose, as shown in fig. 3 and 7, the detecting assembly 20 further includes an extending member 202 and a moving member 203, wherein the extending member 202 is screwed with the detecting seat 102, and the detecting assembly 20 is also detachable and mounted on a new detecting seat 102 when the detecting seat 102 is detached due to the screwing of the extending member 202 with the detecting seat 102; in addition, the moving member 203 is slidably disposed on the extending member 202, the dial gauge 201 is fixedly mounted on the moving member 203, and the dial gauge 201 is close to or far from the groove 1021 after the moving member 203 slides a predetermined distance.

Further, in order to enable the slider 401 to be immersed in the chute 301 before inspection, as shown in fig. 3, the end of the base 101 facing away from the detection seat 102 has a plurality of legs 1012, and by providing the legs 1012, the end surface of the base 101 is spaced from the top surface of the support platform by a predetermined distance, providing space and conditions for the slider 401 to move downward by a predetermined distance.

In summary, the shaft diameter rapid inspection device according to the embodiment of the utility model is illustrated, which provides advantages of adjustable height of a supporting part, suitability for transmission shafts of various specifications, good universality and the like for the shaft diameter rapid inspection device.

It should be noted that in the embodiment of the utility model, the axle diameter quick detection device has a simple structure, does not involve complex manufacturing process and expensive materials, and has higher economical efficiency. Meanwhile, for manufacturers, the quick shaft diameter detection device provided by the utility model is easy to produce, low in cost, more beneficial to control the production cost and further beneficial to product popularization and use.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from such principles.

Claims

1. The utility model provides a diameter of axle quick check device which characterized in that: the shaft diameter quick-detecting device comprises

the first rotating piece is rotatably arranged on the base; and

2. The shaft diameter rapid inspection device according to claim 1, wherein: the base is provided with a first notch, and when the first rotating piece rotates by a preset angle, the first rotating piece is arranged in the first notch or separated from the first notch.

3. The shaft diameter rapid inspection device according to claim 2, wherein: the one end that the slider deviates from the recess is equipped with a rack, the slider with rack fixed connection, the supporting component still includes a second and rotates the piece, the second rotates the piece and rotates to install on the first rotation piece, the second rotates the piece and is close to the one end of slider is equipped with a gear, the gear with the rack meshing.

4. A shaft diameter rapid inspection device according to claim 3, wherein: the base body combination further comprises a first extension piece and a second extension piece, the first extension piece and the second extension piece are both positioned between the base and the detection base, the first extension piece is fixedly connected with the base, the second extension piece is connected with the detection base, and the second extension piece is slidably arranged on the first extension piece.

5. The shaft diameter rapid inspection device according to claim 4, wherein: the base combination further comprises an installation base, the installation base is located between the second extension piece and the detection base, the second extension piece is fixedly connected with the installation base, and the installation base is in threaded connection with the detection base.

6. The shaft diameter rapid inspection device according to claim 5, wherein: one end of the mounting seat, which is away from the second extension piece, is provided with a first bulge, one surface of the detection seat, which is close to the mounting seat, is provided with an embedded hole, and the first bulge stretches into the embedded hole.

7. The shaft diameter rapid inspection device according to claim 4, wherein: the first extension piece is provided with a sliding hole, the second extension piece is arranged in the sliding hole in a sliding way, a limiting groove is formed in the wall of the sliding hole, the second extension piece is provided with a second protrusion, and the second protrusion is arranged in the limiting groove.

8. The shaft diameter rapid inspection device according to any one of claims 1 to 7, wherein: the detecting assembly further comprises an extending piece and a moving piece, the extending piece is connected with the detecting seat, the moving piece is arranged on the extending piece in a sliding mode, the dial indicator is fixedly installed on the moving piece, and when the moving piece slides for a preset distance, the dial indicator is close to or far away from the groove.

9. The shaft diameter rapid inspection device according to any one of claims 1 to 7, wherein: one end of the base, which is away from the detection seat, is provided with a plurality of supporting feet.