CN219347605U

CN219347605U - Inner diameter measuring tool capable of positioning center of round hole

Info

Publication number: CN219347605U
Application number: CN202320217201.1U
Authority: CN
Inventors: 翟凤宇; 王伟; 孟祥东
Original assignee: CRRC Shandong Co Ltd
Current assignee: CRRC Shandong Co Ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-07-14
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses an inner diameter measuring tool capable of positioning the center of a round hole, which comprises a shell, a spiral rotating shaft, a rotating handle, an inner sleeve and a telescopic scale, wherein the shell comprises a middle pipeline, a first transverse pipeline and a second transverse pipeline, the left end of the first transverse pipeline is open, and the right end of the first transverse pipeline is closed; the right end of the second transverse pipeline is open, and the left end of the second transverse pipeline is closed; the first inner sleeve is inserted into the second transverse duct from the left end of the first transverse duct, and the second inner sleeve is inserted into the second transverse duct from the right end of the second transverse duct; the spiral rotating shaft is inserted into the middle pipeline and penetrates through the first inner sleeve and the second inner sleeve; the first inner sleeve and the second inner sleeve can move left and right, the first inner sleeve is connected with the first telescopic scaleplate, and the second inner sleeve is connected with the second telescopic scaleplate; and a marking line is arranged on the central axis of the outer surface of the middle pipeline.

Description

Inner diameter measuring tool capable of positioning center of round hole

Technical Field

The utility model belongs to the technical field of railway wagons, and particularly relates to a tool for measuring and positioning the inner diameter of a part on a railway wagon.

Background

At present, when a truck repair unit detects the size of a part with a round hole, the distance from the circle center of the round hole to a certain plane or the distance between the circle centers of two round holes is often required to be measured according to a drawing. Because the circle center is very complicated to measure and position by a scribing mode, only spot check can be basically used, even spot check is also performed by measuring the approximate position of the edge of the round hole, and the radius length is increased to perform conversion, so that the accuracy of measurement cannot be ensured.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a positioning and detecting tool capable of positioning the center of a round hole and simultaneously having an inner diameter measuring function, which can rapidly position the center of the round hole and greatly improve the efficiency of checking and measuring the positioning size of a large-sized part with a hole for a repair enterprise.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

in a first aspect, embodiments of the present utility model provide an inside diameter measuring tool that can locate the center of a circular hole, the inside diameter measuring tool comprising a housing, a screw spindle, a rotary handle, an inner sleeve, and a retractable scale; the shell comprises a middle pipeline, a first transverse pipeline and a second transverse pipeline, wherein the left end of the first transverse pipeline is open, and the right end of the first transverse pipeline is closed; the right end of the second transverse pipeline is open, and the left end of the second transverse pipeline is closed; the first inner sleeve is inserted into the second transverse duct from the left end of the first transverse duct, and the second inner sleeve is inserted into the second transverse duct from the right end of the second transverse duct; the spiral rotating shaft is inserted into the middle pipeline and penetrates through the first inner sleeve and the second inner sleeve; the first inner sleeve and the second inner sleeve can move left and right, the first inner sleeve is connected with the first telescopic scaleplate, and the second inner sleeve is connected with the second telescopic scaleplate; and a marking line is arranged on the central axis of the outer surface of the middle pipeline.

Further, a rotating handle is arranged at the top of the spiral rotating shaft.

Further, the rotary handle is provided with a through hole, and the through hole corresponds to the through hole at the end part of the middle rotary shaft and is fixed by penetrating a pin.

Further, a first bump clamping groove is formed in the position, close to the left open end, of the first transverse pipeline, a first triangle-shaped bump is arranged on the first inner sleeve, and the first triangle-shaped bump is matched with the first bump clamping groove.

Further, a second bump clamping groove is formed in the position, close to the right end opening end, of the second transverse pipeline, a second inclined triangle bump is arranged on the second inner sleeve, and the second inclined triangle bump is matched with the second bump clamping groove.

Further, a plurality of first poking teeth with proper tooth heights are arranged on one side of the sliding way at the second half section of the first inner sleeve; the first poking teeth are matched with the first poking teeth on the spiral rotating shaft.

Further, a plurality of second poking teeth with proper tooth heights are arranged on one side of the second inner sleeve slide way at the second half section, and the second poking teeth are matched with the second poking teeth on the spiral rotating shaft.

Further, the middle pipeline is in threaded fit with the spiral rotating shaft.

Further, scalable scale include multistage, multistage scale nest layer upon layer, every layer of scale end is equipped with the elasticity bump, can block into the bump draw-in groove of outer scale after pulling out the scale for fixed scale prevents to shift during the measurement. The round convex points can be flattened by force, so that the scale is pushed back layer by layer. The scale is compressed inside the transverse pipeline when not in use, and can be pulled out in advance by a proper length when needed, and then is finely adjusted by the measuring device. Meanwhile, scales are arranged on the staff gauge and can be used for measuring the inner diameter of the round hole.

The beneficial effects of the embodiment of the utility model are as follows:

1. the measuring and positioning device is suitable for measuring and positioning when a large round hole is formed in a fitting, the precision is improved much more than that of a visual effect, the center of the round hole can be accurately positioned, and specifically, when the extending lengths of the first inner sleeve and the second inner sleeve are equal and the extending lengths of the first telescopic scale and the second telescopic scale are the same, the position marked by the marking line is the center of the round hole.

2. The measuring of round hole internal diameter can be carried out simultaneously to this embodiment, and the reading is convenient, easily observes.

3. The embodiment can be small and light when not used, and saves more space than a tool used for scribing.

4. The round hole center positioning can be completed in a short time, and compared with the conventional scribing efficiency, the round hole center positioning device can greatly improve.

5. The embodiment fully utilizes the mechanical structure principle, and has no additional requirement on the environment of the use place.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

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

FIG. 2 is a schematic external view of the present utility model;

FIG. 3 is a schematic view of the inner sleeve structure of the present utility model;

FIG. 4 is a schematic view of a retractable scale according to the present utility model;

FIG. 5 is a schematic view of a spiral shaft structure according to the present utility model;

FIG. 6 is a schematic view of the structure of the housing according to the present utility model;

in the figure: the mutual spacing or size is exaggerated for showing the positions of all parts, and the schematic drawings are used only for illustration; 1, rotating a handle; 2. a spiral rotating shaft; 2-1 of poking teeth, 2-2 of poking teeth, 3 of a shell; 3-1, a center mark line; 4. an inner sleeve; 5. a retractable scale.

The front half section of the 4-1 sleeve, the rear half section of the 4-2 sleeve, 4-3 can penetrate through a slideway, 4-4 poking teeth and 4-5 oblique triangle convex points;

3-1, a central marking line, 3-2 middle pipelines, 3-3 transverse pipelines, 3-4 transverse pipelines and 3-5 convex point clamping grooves; 3-6 convex point clamping grooves.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms also are intended to include the plural forms unless the present utility model clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As described in the background art, the utility model provides an inner diameter measuring tool capable of positioning the center of a round hole, which comprises a shell, a spiral rotating shaft, a rotating handle, an inner sleeve and a telescopic scale, wherein the inner diameter measuring tool is used for solving the technical problems; the shell comprises a middle pipeline, a first transverse pipeline and a second transverse pipeline, the left end of the first transverse pipeline is open, and the right end of the first transverse pipeline is closed; the right end of the second transverse pipeline is open, and the left end of the second transverse pipeline is closed; the first inner sleeve is inserted into the second transverse duct from the left end of the first transverse duct, and the second inner sleeve is inserted into the second transverse duct from the right end of the second transverse duct; the spiral rotating shaft is inserted into the middle pipeline and penetrates through the first inner sleeve and the second inner sleeve; the first inner sleeve and the second inner sleeve can move left and right, the first inner sleeve is connected with the first telescopic scaleplate, and the second inner sleeve is connected with the second telescopic scaleplate; and a marking line is arranged on the central axis of the outer surface of the middle pipeline. The device promotes a lot more than visual effect precision, can be accurate fix a position the round hole center, and specifically, when first inside sleeve, the inside telescopic extension length of second equal and first scalable scale, the scalable scale extension length of second are the same, the position that the sign line sign is the round hole center promptly.

In an exemplary embodiment of the present utility model, as shown in fig. 1-6, the present utility model discloses an inside diameter measuring tool capable of positioning the center of a circular hole, comprising a rotary handle 1, a screw shaft 2, a housing 3, an inner sleeve 4 and a telescopic scale 5. The top of the spiral rotating shaft 2 is connected with the rotating handle 1, the middle part and the lower part of the spiral rotating shaft 2 are matched with a shell 3, the shell 3 comprises a middle pipeline 3-2 and two transverse pipelines (the transverse pipeline 3-3 and the transverse pipeline 3-4) which are communicated with each other, wherein the left end of the transverse pipeline 3-3 is open, the right end is closed, the right end of the transverse pipeline 3-4 is open, the left end is closed, and an inner sleeve 4 is arranged in each of the two transverse pipelines 3-3 and the transverse pipeline 3-4 for the inner sleeve 4 to enter and exit and limit the movable range of the scale; a retractable scale 5 is also connected to each of the two inner sleeves 4.

Further, as shown in fig. 3, the two inner sleeves 4 in the embodiment have the same structure, wherein the front half section 4-1 of the inner sleeve 4 is connected with the rear end of the telescopic scale 5, the rear half section 4-2 of the inner sleeve 4 is provided with two symmetrical sliding ways 4-3 which can penetrate through the rear end of the inner sleeve, and the spiral rotating shaft 2 directly penetrates through the upper sliding way 4-3 and the lower sliding way 4-3 from top to bottom, so that the inner sleeve 4 can not be influenced by the spiral rotating shaft when moving left and right in the corresponding transverse pipeline, and further, one side of the rear half sliding way of the inner sleeve 1 is provided with a shifting tooth 4-4 with proper tooth height; the poking teeth 4-4 are matched with poking teeth 2-1 on the spiral rotating shaft 2; so that the inner sleeve 1 can be pulled outwards. Meanwhile, the inner sleeve 4 is provided with an oblique triangle bump 4-5 at the front end. Two inner sleeves 4 are placed in the two transverse ducts 3-3 of the housing respectively, the inner sleeves 4 and the interior of the transverse duct of the housing 3 belong to clearance fit, and the inner sleeves 4 can move in the transverse duct of the housing 3 successively.

Further, as shown in fig. 5, the spiral rotating shaft 2 in this embodiment is provided with threads at the tail end and the middle part of the spiral rotating shaft 2, which can be engaged with the threads at the inner side of the middle pipeline 3-2 of the housing, but the threads cannot translate the rotating shaft up and down due to torsion, and the spiral rotating shaft is used only as a fixed rotating shaft position, so that the spiral rotating shaft 2 is prevented from directly rubbing against the inner wall of the pipeline. Simultaneously, the spiral rotating shaft 2 is provided with a poking tooth 2-1 and a poking tooth 2-2 with proper tooth heights at the position of a slide way 4-3 penetrating through the inner sleeve, and the directions of the poking teeth 2-1 and the poking teeth 2-2 at the upper part and the lower part of the spiral rotating shaft 2 are 180 degrees opposite; wherein the setting teeth 2-1 are engaged with the setting teeth 4-4 of the first inner sleeve 4, the setting teeth 2-2 are engaged with the setting teeth 4-4 of the second inner sleeve 4, and when the screw shaft 2 is driven to rotate clockwise by the rotating handle, the first inner sleeve 4 can move to the left side, and the second inner sleeve 4 can move to the right side; when the first inner sleeve 4 moves leftwards, the poking teeth 2-1 can be easily flattened, and the first inner sleeve can be blocked by the clamping grooves when moving rightwards; when the second inner sleeve 4 moves rightward, the poking teeth 2-1 can be easily flattened, and the second inner sleeve moves leftward to be blocked by the blocking groove.

Further, as shown in fig. 4, the telescopic scale 5 in this embodiment is divided into three sections, and the telescopic scale 5 is nested layer by layer, and the end of each layer of scale is provided with an elastic bump, which can be clamped into the bump clamping groove of the outer layer of scale after the scale is pulled out, so as to fix the telescopic scale 5 and prevent displacement during measurement. The round convex points can be flattened by force, so that the scale is pushed back layer by layer. The telescopic scale 5 is compressed inside the transverse duct when not in use, and can be pulled out in advance by about a suitable length when required, and then fine-tuned by the measuring device. Meanwhile, scales are arranged on the staff gauge and can be used for measuring the inner diameter of the round hole.

Further, as shown in fig. 6, the structure of the casing 3 of the device is that the casing 3 comprises an intermediate pipe 3-2 with threads inside, and two mirror symmetry transverse pipes 3-3 and 3-4, wherein the left end of the transverse pipe 3-3 is open, the right end is closed, the right end of the transverse pipe 3-4 is open, the left end is closed, and the transverse pipe 3-3 and the transverse pipe 3-4 are used for the scale to enter and exit and limit the movable range of the scale; specifically, one scale is inserted into the transverse pipeline 3-3 from the left end of the transverse pipeline 3-3, and the other scale is inserted into the transverse pipeline 3-4 from the right end of the transverse pipeline 3-4; the inner wall close to the open end of the transverse pipeline 3-3 is provided with a bump clamping groove 3-5; the inner wall close to the open end of the transverse pipeline 3-4 is provided with a bump clamping groove 3-6; the bump clamping grooves 3-5 and the bump clamping grooves 3-6 are respectively matched with the corresponding oblique triangle bumps 4-5 on the inner sleeve 4 to limit the position of the inner sleeve 4, and meanwhile, the outer central axis 3-1 of the shell is provided with clear marks or scored groove lines for representing the central line.

Further, the device needs to rotate the handle, and the handle is provided with a through hole corresponding to the through hole at the end part of the middle rotating shaft and is fixed by penetrating the pin.

The specific application method is as follows:

the measuring tool is placed in a round hole with measurement, then the spiral rotating shaft 2 is rotated through the rotating handle, so that the two inner sleeves 4 can extend out of the transverse pipeline simultaneously, if the telescopic scale 5 is just clamped on the wall of the round hole arm, the scale is not required to be stretched, the reading of the scale is directly read at the moment, if the telescopic scale 5 cannot be clamped on the wall of the round hole, the scale is required to be stretched until the caliper is in contact with the wall of the round hole, and then the reading of the caliper is read.

Finally, it is pointed out that relational terms such as first and second are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An inner diameter measuring tool capable of positioning the center of a round hole is characterized by comprising a shell, a spiral rotating shaft, a rotating handle, an inner sleeve and a telescopic ruler;

the shell comprises a middle pipeline, a first transverse pipeline and a second transverse pipeline, wherein the left end of the first transverse pipeline is open, and the right end of the first transverse pipeline is closed; the right end of the second transverse pipeline is open, and the left end of the second transverse pipeline is closed; the first inner sleeve is inserted into the second transverse duct from the left end of the first transverse duct, and the second inner sleeve is inserted into the second transverse duct from the right end of the second transverse duct; the spiral rotating shaft is inserted into the middle pipeline and penetrates through the first inner sleeve and the second inner sleeve; the first inner sleeve and the second inner sleeve can move left and right, the first inner sleeve is connected with the first telescopic scaleplate, and the second inner sleeve is connected with the second telescopic scaleplate; and a marking line is arranged on the central axis of the outer surface of the middle pipeline.

2. The tool for measuring the inner diameter of the center of a circular hole according to claim 1, wherein a rotary handle is installed at the top of the screw shaft.

3. The tool for measuring the inner diameter of the center of the round hole capable of being positioned according to claim 2, wherein the rotary handle is provided with a through hole corresponding to the through hole at the end part of the middle rotary shaft, and the rotary handle is fixed by penetrating a pin.

4. The tool for measuring the inner diameter of the center of the positionable round hole according to claim 1, wherein a first bump clamping groove is arranged at a position of the first transverse pipeline close to the left open end, a first triangle-shaped bump is arranged on the first inner sleeve, and the first triangle-shaped bump is matched with the first bump clamping groove.

5. The tool for measuring the inner diameter of the center of the positionable round hole according to claim 1, wherein a second bump clamping groove is arranged at a position of the second transverse pipeline close to the right end opening end, a second triangle-shaped bump is arranged on the second inner sleeve, and the second triangle-shaped bump is matched with the second bump clamping groove.

6. The tool for measuring the inner diameter of the center of the positionable round hole according to claim 1, wherein a plurality of first poking teeth with proper tooth heights are arranged on one side of the sliding way of the second half section of the first inner sleeve; the first poking teeth are matched with the first poking teeth on the spiral rotating shaft.

7. The tool for measuring the inner diameter of the center of the positionable round hole according to claim 1, wherein a plurality of second poking teeth with proper tooth heights are arranged on one side of the second inner sleeve on the second half section of the slideway, and the second poking teeth are matched with the second poking teeth on the spiral rotating shaft.

8. The tool for measuring the inner diameter of the center of the round hole in the middle of the round hole according to claim 1, wherein the middle pipe is in threaded fit with the spiral rotating shaft.

9. The tool for measuring the inner diameter of the center of a circular hole capable of being positioned according to claim 1, wherein the telescopic scale comprises a plurality of sections, the sections are nested layer by layer, and the tail end of each section is provided with an elastic salient point.