CN219319174U - Small-bore artillery internal diameter detector - Google Patents
Small-bore artillery internal diameter detector Download PDFInfo
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- CN219319174U CN219319174U CN202320613170.1U CN202320613170U CN219319174U CN 219319174 U CN219319174 U CN 219319174U CN 202320613170 U CN202320613170 U CN 202320613170U CN 219319174 U CN219319174 U CN 219319174U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The utility model relates to the field of gun detection, in particular to a small-caliber gun inner diameter detector which comprises a measuring head capable of being axially inserted into a gun barrel along the gun barrel, wherein an elastic supporting ring for supporting the measuring head is coaxially arranged on the measuring head, the measuring head is rotatably matched with the elastic supporting ring, and the elastic supporting ring is in butt joint with the bore wall of the gun barrel and can axially slide along the gun barrel; the measuring head is internally provided with a jack post capable of moving along the axial direction of the measuring head, the measuring head is internally provided with a measuring head capable of moving along the radial direction of the measuring head, one end of the measuring head is abutted with the rifling of the gun barrel, and the other end of the measuring head and one end of the jack post form wedge surface matching, so that the measuring head can push the jack post to move along the axial direction of the measuring head when moving along the radial direction of the measuring head. The utility model can accurately measure the inner diameter of any position in the gun barrel.
Description
Technical Field
The utility model relates to the field of gun detection, in particular to a small-caliber gun inner diameter detector.
Background
The gun is army main warfare equipment, and the barrel is a core component of the gun. When the gun shoots, the gun tube is not only impacted and chemically acted by high-temperature high-pressure gunpowder combustion gas, but also subjected to the friction action of the high-speed moving projectile, so that the defects are more than ten; if the defects of the gun barrel cannot be timely and accurately judged and treated, the phenomena of shell jamming, rifling and the like can be caused, and the safe use of the gun is greatly influenced. In order to ensure the shooting safety and the shooting precision of the gun, the state of the gun barrel inner bore (such as the gun barrel inner diameter) needs to be checked regularly to judge the quality grade of the gun barrel. The prior measuring equipment is shown in patent number CN113804117A, and converts the inner diameter of the gun barrel into a distance measurement value which is converted by the eccentric amount of a probe of a laser displacement sensor and reflected light sensed by the probe, and the measurement and calculation data of the diameter of the inner wall of the gun barrel come from distance parameters measured by the probe of the laser displacement sensor; in the using process of the measuring mode, the position of the laser displacement sensor probe needs to be kept very accurate, and once the position of the sensor is slightly changed, the acquired data will generate larger errors, and the measuring accuracy cannot be ensured, so that the problem needs to be solved.
Disclosure of Invention
In order to avoid and overcome the technical problems in the prior art, the utility model provides a small-caliber gun inner diameter detector. The utility model can accurately measure the inner diameter of any position in the gun barrel.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the small-caliber gun inner diameter detector comprises a measuring head which can be axially inserted into a gun barrel along the gun barrel, wherein an elastic supporting ring for supporting the measuring head is coaxially arranged on the measuring head, the measuring head is in rotary fit with the elastic supporting ring, and the elastic supporting ring is in butt fit with the wall of the gun barrel bore and can axially slide along the gun barrel;
the measuring head is internally provided with a jack post capable of moving along the axial direction of the measuring head, the measuring head is internally provided with a measuring head capable of moving along the radial direction of the measuring head, one end of the measuring head is abutted with the rifling of the gun barrel, and the other end of the measuring head and one end of the jack post form wedge surface matching, so that the measuring head can push the jack post to move along the axial direction of the measuring head when moving along the radial direction of the measuring head.
As a further scheme of the utility model: the elastic support ring is characterized in that elastic pieces are axially arranged on the ring body of the elastic support ring along the gun barrel, the elastic pieces are circumferentially arranged in an array manner along the elastic support ring, and the outer ring of each elastic piece is convexly provided with a convex head which is abutted with the bore wall of the gun barrel; each elastic sheet is enclosed to form a columnar accommodating cavity for inserting the measuring head, and a bearing is arranged in the accommodating cavity to be in rotary fit with the measuring head.
As still further aspects of the utility model: the detector also comprises a fixed tube coaxially arranged with the gun barrel, and the tail end of the jacking column extends into the fixed tube and is connected with a displacement sensor in the fixed tube.
As still further aspects of the utility model: elastic support rings are arranged on the fixed pipe and the measuring head so as to form two-point support for the fixed pipe; along the direction of detector insertion, push rod, inclination sensor and fixed pipe coaxial arranging in proper order, the reflector panel is installed to the one end that the measuring head kept away from fixed pipe.
As still further aspects of the utility model: a first guide cavity is axially formed in the measuring head, and the jacking column is arranged in the first guide cavity and is in sliding fit with the first guide cavity; the measuring head is internally provided with a second guide cavity communicated with the first guide cavity along the radial direction, the measuring head comprises a fixed measuring head and a movable measuring head which are vertically arranged in the second guide cavity in a butt mode, the heads of the fixed measuring head and the movable measuring head are abutted to rifling of the gun barrel, the tail of the fixed measuring head is avoided from being matched with the movable track position of the jack post, and the tail of the movable measuring head is matched with the jack post to form a wedge surface.
As still further aspects of the utility model: the jack post is provided with a positioning shaft shoulder in a protruding mode along the radial direction, the jack post is sleeved with a jack post spring, one end of the jack post spring is in butt joint with the cavity wall of the first guide cavity, the other end of the jack post spring is in butt joint with the positioning shaft shoulder, and the jack post spring exerts elastic force towards the direction of the movable measuring head on the jack post.
As still further aspects of the utility model: the head of the fixed measuring head is provided with a first arc-shaped head in an arc shape, and the front end of the first arc-shaped head is provided with a first salient point; the head of the movable measuring head is provided with a second arc-shaped head which is in an arc shape, the front end of the second arc-shaped head is provided with a second salient point, and the first salient point and the second salient point are in butt fit with rifling of the gun barrel.
As still further aspects of the utility model: the column head of the jack post is abutted with the movable measuring head, the column head is spherical, and the tail part of the movable measuring head is a guiding inclined plane.
As still further aspects of the utility model: the movable measuring head is provided with a guide groove along the length direction, and a guide column in sliding fit with the guide groove is convexly arranged in the second guide cavity, so that the maximum sliding range of the movable measuring head is limited.
As still further aspects of the utility model: the measuring head is provided with a third guide cavity along the radial direction, the positioning column is arranged in the third guide cavity and is in sliding fit with the third guide cavity, the head of the positioning column is provided with a third arc-shaped head which is abutted with the bore groove of the gun barrel, the positioning column is sleeved with a positioning column spring, one end of the positioning column spring is abutted with the third guide cavity, the other end of the positioning column spring is abutted with the third arc-shaped head, and the positioning column spring exerts elastic force towards the direction of the bore groove of the gun barrel on the positioning column; the locating columns are arranged in two groups at intervals along the length direction of the measuring head, and the third arc heads of the two locating columns face opposite directions.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the wedge surface is matched with the top column, the measuring head is abutted with the rifling so as to move along the radial direction of the measuring head, and then the measuring head pushes the top column to move along the axial direction through the wedge surface, so that the inner diameter of the gun barrel pipe at a specific position can be obtained through measuring the axial displacement distance of the top column, and the accurate measurement of the inner diameter at any position in the gun barrel pipe is realized; because the elastic support ring is rotationally arranged on the measuring head, the elastic support ring is abutted with the gun barrel and can axially slide along the gun barrel, when the measuring head is axially pushed along the gun barrel, the elastic support ring plays a supporting role on the measuring head, at the moment, the measuring head rotates along the rifling, the elastic support ring does not rotate, and the inner diameter of the rifling at any position in the gun barrel can be measured in the dynamic pushing process.
2. The elastic support ring is provided with the plurality of groups of elastic pieces, the elastic support ring can adapt to the gun barrels with different diameters through the abutting connection of the convex heads on the elastic pieces and the gun barrels, and meanwhile, each elastic piece can be enclosed to form a containing cavity for a bearing to be installed in, so that the measuring head is convenient to be in rotary fit with the elastic support ring through the bearing; the displacement sensor is arranged in the fixed pipe, so that the measuring head and the fixed pipe are coaxially arranged, and the jacking column can be matched with the displacement sensor to acquire measurement data in real time; the push rod and the inclination angle sensor are added, so that the measurement accuracy is further improved, and the push rod can push the detector conveniently.
3. The measuring head consists of a fixed measuring head and a movable measuring head which are arranged vertically in opposite directions, the distance between the vertexes of the two groups of measuring heads is the diameter of a gun barrel, the movable measuring head is used as a movable end, and the tail part of the movable measuring head and the jacking column form wedge surface matching; the arrangement of the first guide cavity and the second guide cavity in the measuring head can play a role in guiding and positioning the movable measuring head and the jacking column, so that the movable measuring head and the jacking column can slide conveniently; the jack post is provided with a jack post spring, and the jack post can be always kept in a butt joint state with the movable measuring head under the action of the elastic force of the jack post spring, so that the measurement accuracy is ensured.
4. According to the utility model, the cambered surface-shaped design of the fixed measuring head and the movable side head is convenient for passing through the air suction hole in the bore, and the convex points on the cambered head are designed for point contact measurement, so that the measurement precision is improved; the tail end of the jacking column is connected with the displacement sensor, so that the axial displacement distance of the jacking column can be directly obtained through the sensor, and the measurement accuracy is further improved; the sliding fit of the guide groove on the movable measuring head and the guide post in the second guide cavity can limit the maximum sliding range of the movable measuring head and prevent the movable measuring head from falling out of the second guide cavity.
5. The design of the two groups of positioning columns can be clamped into the bore groove of the gun barrel under the action of the elastic force of the positioning column springs, so that the guiding effect on the measuring head is achieved, and the position deviation of the measuring head in the measuring process is avoided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic diagram of the structure of the measuring head in the present utility model.
FIG. 3 is a schematic view of the elastic support ring according to the present utility model.
In the figure:
1. a measuring head; 11. a top column; 111. positioning a shaft shoulder; 112. column head; 113. a jack-prop spring;
12. a first guide chamber; 13. fixing a measuring head; 131. a first arcuate head; 132. a first bump;
14. a movable measuring head; 141. a second arcuate head; 142. a second bump;
143. a guide groove; 144. a guide slope;
15. a second guide chamber; 151. a guide post;
16. positioning columns; 161. a third arcuate head; 162. positioning a column spring; 163. a third guide chamber;
2. an elastic support ring; 21. a spring plate; 211. a nose; 22. a receiving chamber;
3. a light reflecting plate; 4. a displacement sensor; 5. a fixed tube;
6. an inclination sensor; 7. a push rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3, in an embodiment of the present utility model, a small caliber gun inner diameter detector includes a fixed tube 5, a displacement sensor 4 is installed in the fixed tube 5, the displacement sensor 4 is preferably a GPNL20-20 series rebound type displacement sensor, and an elastic support ring 2 is sleeved on a tube body of the fixed tube 5.
The elastic support ring 2 comprises a plurality of groups of elastic pieces 21 arranged on the ring body, one ends of the elastic pieces 21 adjacent to the bore wall of the gun tube are convexly provided with protruding heads 211, and the protruding heads 211 are abutted with the bore wall of the gun tube. After the shrapnel 21 enters the gun barrels with different diameters, the shrapnel 21 can be elastically floated up and down so as to be suitable for the gun barrels with different diameters.
The elastic sheets 21 are arranged in a plurality of groups and are arranged along the circumferential array of the ring body of the elastic support ring 2, and a columnar accommodating cavity 22 is formed between the elastic sheets 21 in a surrounding manner so as to allow a pipe orifice at one side of the fixed pipe 5 to be inserted into the accommodating cavity. The accurate needle bearing is installed in the accommodation chamber 22 of the elastic support ring 2 and is matched with the fixed pipe 5 in a rotary way through the bearing, and when in detection operation, the measuring head 1 and the fixed pipe 5 rotate in the elastic support ring 2, and the elastic support ring 2 does not rotate.
The measuring head 1 is columnar, a first guide cavity 12 is axially formed in the measuring head, and the jacking column 11 is arranged in the first guide cavity 12 and is in sliding fit with the first guide cavity 12. The middle part of the measuring head 1 is provided with a second guiding cavity 15 penetrating through the measuring head 1 along the radial direction, and the first guiding cavity 12 is communicated with the second guiding cavity 15. The shaft of the top column 11 is radially provided with an annular positioning shaft shoulder 111 in a protruding manner, a top column spring 113 is sleeved on the top column 11, one end of the top column spring 113 is abutted against the first guide cavity 12, the other end of the top column spring is abutted against the positioning shaft shoulder 111, and the top column spring 113 applies elastic force to the top column 11 towards the direction of the second guide cavity 15.
The second guiding cavity 15 is divided into two sections by the first guiding cavity 12, the upper section of the second guiding cavity 15 is provided with a movable measuring head 14 which is in sliding fit with the second guiding cavity 15, and the lower section of the second guiding cavity 15 is provided with a fixed measuring head 13 which is fixedly connected with the second guiding cavity 15.
The movable measuring head 14 is provided with a guide groove 143 along the length direction of the second guide cavity 15, the second guide cavity 15 is convexly provided with a guide column 151 corresponding to the guide groove 143, the diameter of the guide column 151 is matched with the groove width of the guide groove 143, and the movable measuring head can slide along the guide groove 143, so that the maximum sliding range of the movable measuring head 14 is limited by the cooperation of the guide column 151 and the guide groove 143.
The heads of the movable measuring head 14 and the fixed measuring head 13 extend out of the second guide cavity 15, a cambered first arc-shaped head 131 is arranged at the head of the movable measuring head 14, and a first salient point 132 is arranged at the center of the first arc-shaped head 131. The head of the fixed measuring head 13 is provided with a second arc-shaped head 141, and a second salient point 142 is arranged at the center of the second arc-shaped head 141. The first and second bumps 132, 142 abut the rifling (either a female or male) of the barrel. The cambered surface-shaped design of the first cambered head 131 and the second cambered head 141 is used for facilitating the passing of the air suction hole in the bore, and the first salient point 132 and the second salient point 142 are used for carrying out point contact measurement on the rifling.
The end of the top column 11 positioned in the first guide cavity 12 is a spherical column head 112, and the tail part of the fixed measuring head 13 is positioned in the second guide cavity 15 and is staggered with the column head 112 of the top column 11; the tail of the movable probe 14 is a guide inclined plane 144, the guide inclined plane 144 is in abutting fit with the column head 112 of the top column 11, and the inclination angle of the guide inclined plane 144 is preferably 45 degrees. When the movable measuring head 14 slides along the second guiding cavity 15, the top column 11 is pushed to slide along the first guiding cavity 12, so that the radial movement of the movable measuring head 14 is converted into the axial movement of the top column 11. The interval between the head of the movable measuring head 14 and the head of the fixed measuring head 13 is the measured inner diameter.
Two groups of third guide cavities 163 are further formed in the measuring head 1 along the radial direction, the front and rear positions of the two groups of third guide cavities 163 are staggered along the axial direction of the measuring head 1, positioning columns 16 are arranged in the third guide cavities 163, and the positioning columns 16 are in sliding fit with the third guide cavities 163. The head of the positioning column 16 extends out of the third guiding cavity 163, and a third arc-shaped head 161 is arranged at the head of the positioning column 16, and the third arc-shaped head 161 is similar to the first arc-shaped head 131 and the second arc-shaped head 141 in shape and is used for being clamped into a bore groove of a gun barrel so as to position the measuring head 1. The positioning column 16 is sleeved with a positioning column spring 162, one end of the positioning column spring 162 is abutted against a third guide cavity 163, the other end of the positioning column spring 162 is abutted against a third arc-shaped head 161, the positioning column spring 162 applies elastic force to the positioning column 16 towards the direction of the bore groove of the gun barrel, and the directions of the two groups of third guide cavities 163 are opposite, so that the directions of the heads of the two groups of positioning columns 16 are opposite.
After the measuring head 1 is installed, the tail part of the jacking column 11 extends into the fixed pipe 5 and is connected with the displacement sensor 4, a group of elastic support rings 2 are sleeved on the measuring head 1, and the elastic support rings 2 on the measuring head 1 and the elastic support rings 2 on the fixed pipe 5 are identical in size and are coaxially arranged, so that two-point support is formed for the detector. One end of the measuring head 1 far away from the fixed tube 5 is fixed with a reflecting plate 3.
The push rod 7, the inclination sensor 6 and the fixed pipe 5 are coaxially and sequentially arranged, wherein the inclination sensor 6 is preferably a HWT905-L type nine-axis high-precision attitude measurement sensor, is rotationally matched with the displacement sensor, a control circuit board is arranged in the inclination sensor 6, and is used for executing the following main functions:
1. the sensor data are read through serial communication with the displacement sensor 4;
2. the sensor parameters are set and the sensor data are read through serial communication with the inclination sensor 6;
3. after processing the data of the two sensors, sending the data to a data processing device (notebook computer) through a serial port;
3. as an operating power supply 12VDC, both sensors are directly powered.
The measuring head 1 moves in the gun barrel under the pushing of the push rod 7, so that the diameter measurement is completed.
The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not limiting, and these advantages, benefits, effects, etc. are not to be considered as necessarily possessed by the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not intended to be limited to the details disclosed herein as such.
The block diagrams of the devices, apparatuses, devices, systems referred to in this application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent to the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.
Claims (10)
1. The small-caliber gun inner diameter detector is characterized by comprising a measuring head (1) which can be inserted into a gun barrel along the axial direction of the gun barrel, wherein an elastic supporting ring (2) for supporting the measuring head (1) is coaxially arranged on the measuring head (1), the measuring head (1) is in rotary fit with the elastic supporting ring (2), and the elastic supporting ring (2) is in butt fit with the wall of a gun barrel bore and can axially slide along the gun barrel;
the measuring head (1) is internally provided with a jack post (11) capable of moving along the axial direction of the measuring head (1), the measuring head (1) is internally provided with a measuring head capable of moving along the radial direction of the measuring head (1), one end of the measuring head is abutted with the rifling of the gun barrel, and the other end of the measuring head is matched with one end of the jack post (11) to form a wedge surface, so that the measuring head can push the jack post (11) to move along the axial direction of the measuring head when moving along the radial direction of the measuring head.
2. The small-caliber gun inner diameter detector according to claim 1, wherein the elastic support ring (2) is provided with elastic pieces (21) on the ring body along the axial direction of the gun barrel, each elastic piece (21) is arranged along the circumferential array of the elastic support ring (2), and the outer ring of each elastic piece (21) is convexly provided with a convex head (211) which is abutted with the bore wall of the gun barrel; each elastic sheet (21) is enclosed to form a columnar accommodating cavity (22) for inserting the measuring head (1), and a bearing is arranged in the accommodating cavity (22) so as to be in rotary fit with the measuring head (1).
3. A small caliber artillery inner diameter detector according to claim 2, characterized in that the detector further comprises a fixed tube (5) coaxially arranged with the gun tube, and the tail end of the jack post (11) extends into the fixed tube (5) and is connected with a displacement sensor (4) in the fixed tube (5).
4. A small caliber cannon inner diameter detector according to claim 3, wherein the fixed tube (5) and the measuring head (1) are both provided with elastic support rings (2) so as to form two-point support for the fixed tube (5); along detector direction of insertion, push rod (7), inclination sensor (6) and fixed pipe (5) coaxial arranging in proper order, reflector panel (3) are installed to one end that fixed pipe (5) was kept away from to measuring head (1).
5. The small-caliber gun inner diameter detector according to any one of claims 1 to 4, wherein a first guide cavity (12) is axially formed in the measuring head (1), and the jack post (11) is arranged in the first guide cavity (12) and is in sliding fit with the first guide cavity (12); the measuring head (1) is internally provided with a second guide cavity (15) communicated with the first guide cavity (12) along the radial direction, the measuring head comprises a fixed measuring head (13) and a movable measuring head (14) which are vertically and oppositely arranged in the second guide cavity (15), the heads of the fixed measuring head (13) and the movable measuring head (14) are abutted to rifling of a gun barrel, the tail of the fixed measuring head (13) is avoided from the position of a movable track of the jack post (11), and the tail of the movable measuring head (14) is matched with the jack post (11) to form a wedge surface.
6. The small-caliber gun inner diameter detector according to claim 5, wherein a positioning shaft shoulder (111) is convexly arranged on the jack post (11) in the radial direction, a jack post spring (113) is sleeved on the jack post (11), one end of the jack post spring (113) is abutted to the cavity wall of the first guide cavity (12), the other end of the jack post spring (113) is abutted to the positioning shaft shoulder (111), and the jack post spring (113) exerts elastic force towards the direction of the movable measuring head (14) on the jack post (11).
7. The small-caliber gun inner diameter detector according to claim 5, wherein a first arc-shaped head (131) with an arc surface shape is arranged at the head of the fixed measuring head (13), and a first salient point (132) is arranged at the front end of the first arc-shaped head (131); the head of the movable measuring head (14) is provided with a second arc-shaped head (141) in an arc shape, the front end of the second arc-shaped head (141) is provided with a second convex point (142), and the first convex point (132) and the second convex point (142) are in butt fit with the rifling of the gun barrel.
8. The small-caliber gun inner diameter detector according to claim 5, wherein a column head (112) of the top column (11) is abutted against the movable measuring head (14), the column head (112) is spherical, and the tail part of the movable measuring head (14) is a guiding inclined plane (144).
9. The small-caliber gun inner diameter detector according to claim 5, wherein the movable measuring head (14) is provided with a guide groove (143) along the length direction, and a guide post (151) which is in sliding fit with the guide groove (143) is convexly arranged in the second guide cavity (15), so that the maximum sliding range of the movable measuring head (14) is limited.
10. The small-caliber gun inner diameter detector according to claim 5, wherein a third guide cavity (163) is formed in the measuring head (1) in the radial direction, a positioning column (16) is installed in the third guide cavity (163) and is in sliding fit with the third guide cavity (163), a third arc-shaped head (161) which is in butt joint with a gun barrel bore groove is arranged at the head of the positioning column (16), a positioning column spring (162) is sleeved on the positioning column (16), one end of the positioning column spring (162) is in butt joint with the third guide cavity (163), the other end of the positioning column spring (162) is in butt joint with the third arc-shaped head (161), and the positioning column spring (162) exerts elastic force on the positioning column (16) towards the gun barrel bore groove direction; the positioning columns (16) are arranged in two groups at intervals along the length direction of the measuring head (1), and the third arc-shaped heads (161) of the two positioning columns (16) face opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320613170.1U CN219319174U (en) | 2023-03-24 | 2023-03-24 | Small-bore artillery internal diameter detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320613170.1U CN219319174U (en) | 2023-03-24 | 2023-03-24 | Small-bore artillery internal diameter detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219319174U true CN219319174U (en) | 2023-07-07 |
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ID=87031658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320613170.1U Active CN219319174U (en) | 2023-03-24 | 2023-03-24 | Small-bore artillery internal diameter detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219319174U (en) |
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2023
- 2023-03-24 CN CN202320613170.1U patent/CN219319174U/en active Active
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