CN211425300U

CN211425300U - Seamless steel pipe internal diameter detection device

Info

Publication number: CN211425300U
Application number: CN202020470119.6U
Authority: CN
Inventors: 安良铜
Original assignee: Anhui Hongkai Aluminum Technology Co ltd
Current assignee: Anhui Hongkai Aluminum Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-09-04
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a seamless steel pipe internal diameter detection device, which comprises a connecting seat, the connecting seat is cylindricly, the welding of intermediate position department of connecting seat one end has the holding rod, the welding of intermediate position department of the connecting seat other end has the plug. The utility model discloses an arrange the plug into the round platform form, and be equipped with the scale mark on the gag lever post that the perpendicular to slide bar was arranged, the device is led simultaneously to the gag lever post that utilizes the plug and the plane form that is the round platform form, keep the plug to arrange with the parallel alignment of the volume of awaiting measuring seamless steel pipe, ensure that the inside slide bar of plug is located the axle center position department of seamless steel pipe after the plug inserts the seamless steel pipe inside completely, promote the accuracy that the steel pipe internal diameter detected, can once only detect the internal diameter of observing seamless steel pipe simultaneously, external diameter and wall thickness, and the plug of round platform form not only can be convenient for insert inside the detecting of steel pipe, and can detect the steel pipe in different apertures in the certain limit, promote detection.

Description

Seamless steel pipe internal diameter detection device

Technical Field

The utility model relates to a seamless steel pipe processing technology field specifically is a seamless steel pipe internal diameter detection device.

Background

Seamless steel pipes are steel pipes made of one piece of metal, without seams on the surface, called seamless steel pipes, according to the production method, the seamless pipe is divided into a hot rolled pipe, a cold drawn pipe, an extruded pipe, a pipe jacking and the like, the seamless steel pipe is divided into a round shape and a special shape according to the shape of a section, the special pipe has various complex shapes such as a square shape, an oval shape, a triangular shape, a hexagonal shape, a melon seed shape, a star shape and a pipe with fins, the maximum diameter reaches 650mm, the minimum diameter is 0.3mm, according to different purposes, the seamless steel pipe is provided with a thick-wall pipe and a thin-wall pipe, is mainly used as a petroleum geological drilling pipe, a cracking pipe for petrochemical engineering, a boiler pipe, a bearing pipe and a high-precision structural steel pipe for automobiles, tractors and aviation, is allowed to be used only when the inner diameter and the outer diameter of the seamless steel pipe meet the qualified requirements after production is finished, and most of the circular seamless steel pipes are measured by using vernier calipers at present.

The present chinese utility model patent that can refer to the grant bulletin number for CN204944386U discloses a novel portable internal and external diameter measuring apparatu for seamless steel pipe, including the scale, be equipped with fixed box on the scale, the upper end of fixed box is equipped with fixing device, the front end of fixed box is equipped with display element, infrared ray distance sensor and micromatic setting, the inside of scale is equipped with first slip track, install the movable scale on the first slip track, be equipped with the response baffle on the movable scale, the movable scale cup joints in the scale, one side of movable scale and scale is equipped with the external diameter and measures the claw, the opposite side of movable scale and scale is equipped with the internal diameter and measures the claw, the inside of movable scale is equipped with second slip track, install supplementary movable scale on the second slip track. The utility model discloses structural design is simple, and it is convenient to measure, and measuring speed is fast, and the degree of accuracy is high, simultaneously, shortens the length of dipperstick through setting up supplementary movable ruler, and this measuring apparatu convenient to carry is fit for the user and measures and carries at any time.

However, the novel portable inside and outside diameter measuring instrument for the seamless steel pipe has the following problems when measuring the diameter of the circular steel pipe: when measuring the internal diameter at every turn and using, all need insert the internal diameter measurement claw and establish the intraductal back expansion of seamless steel pipe and measure, then the reading, when measuring the external diameter at every turn and using, all need establish the external diameter measurement claw cover and press from both sides tight back measurement in the seamless steel pipe outside, then the reading, because the expansion of measuring the claw is operated by survey crew with pressing from both sides tightly, the easy measuring error that produces of manual operation, and complex operation, inside and outside diameter measurement need separately go on, inspection speed is slow, seriously restricts production efficiency.

The present chinese utility model patent that can refer to the grant publication number for CN208671879U discloses a seamless steel pipe internal diameter detection device, including the support column, one side of support column is connected with upper limit size measurement post, one side that the support column was kept away from to upper limit size measurement post is connected with lower limit size measurement post, upper limit size measurement post and lower limit size measurement post coaxial line, the diameter of upper limit size measurement post is the same with the upper limit size of surveying the steel pipe internal diameter, the diameter of lower limit size measurement post is the same with the lower limit size of surveying the steel pipe internal diameter. The utility model provides an operate numerous lock among the prior art, inspection speed is slow, seriously restricts production efficiency's problem, has convenient to use, easy operation promotes detection efficiency's advantage.

However, the above-mentioned device for detecting the inner diameter of the seamless steel tube can only rapidly measure the seamless steel tube within a certain range, when measuring the inner diameters of seamless steel tubes with different diameters, the measuring columns with different sizes need to be replaced, the use is still inconvenient, and the limit errors of the common seamless steel tubes are small, so that the measuring columns with the lower limit sizes cannot be conveniently aligned with the rapid insertion of the steel tubes in the insertion process, the measuring columns can be inserted after being manually aligned, the use effect is affected, and the use is not convenient under the condition of dim light.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seamless steel pipe internal diameter detection device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a device for detecting the inner diameter of a seamless steel pipe comprises a connecting seat, wherein the connecting seat is cylindrical, a holding rod is welded at the middle position of one end of the connecting seat, a plug is welded at the middle position of the other end of the connecting seat, a limiting disc is welded at the edge position of the holding rod, which is far away from the outer side wall of one side of the connecting seat, a piston groove is arranged at the middle position inside the holding rod, one end of the piston groove, which is close to the connecting seat, extends to the edge position of the holding rod, an air guide pipe is connected at the middle position of the holding rod, which is far away from one end of the connecting seat, one end of the air guide pipe is communicated with the piston groove, a valve is arranged on the air guide pipe, a hollow cavity is arranged inside the plug, a pair of sliding grooves are symmetrically arranged on the outer side, the two ends of the through hole are respectively communicated with the hollow cavity and the piston groove, a slide rod penetrates through the inside of the connecting seat at the position of the through hole, the slide rod is matched with the through hole, one end of the slide rod extends into the inside of the piston groove and is provided with a sealing plug matched with the piston groove, an extrusion spring is arranged between one end of the sealing plug, which is far away from the slide rod, and the piston groove, the other end of the slide rod extends into the inside of the hollow cavity and is welded with a limiting rod, the limiting rod is arranged perpendicular to the slide rod, one end of the slide rod is welded with the middle position of the limiting rod, the two ends of the limiting rod respectively penetrate through two sliding grooves on the plug, and the limiting rods at the two sides of the slide rod are provided with scale marks, one side inside the connecting seat outside the through hole is provided with, the plug is kept away from the intermediate position department of connecting seat one end and is installed the light, and the light establishes ties mutually through wire and switch and battery, one side that the switch was kept away from to the connecting seat lateral wall is equipped with the USB interface, and the USB interface passes through the wire and is connected with the battery electricity.

Preferably, the rubber anti-slip sleeve is sleeved on the outer side of the holding rod between the limiting disc and the connecting seat.

Preferably, the plug is in a circular truncated cone shape.

Preferably, the scale marks on the two sides of the limiting rod are symmetrically arranged, and the 0 scale mark on the scale marks on the two sides of the limiting rod are overlapped and positioned in the middle of the limiting rod.

Compared with the prior art, the beneficial effects of the utility model are that: the seamless steel pipe inner diameter detection device is provided with the piston groove, the valve is arranged on the air guide pipe connected with one end of the holding rod, when one end of the plug is tightly inserted into the steel pipe, the valve can be closed, the sliding rod and the limiting rod which are extruded and contracted are conveniently fixed by air tightness, the device is conveniently separated from the seamless steel pipe and read, the convenience of steel pipe inner diameter detection is increased, on one hand, the detection range is conveniently increased by the movement of the limiting rod by arranging the hollow cavity inside the plug, on the other hand, the weight of the device is reduced, the device is conveniently carried, taken and used, the device can be used under the condition of dim light by arranging the illuminating lamp, the plug is conveniently inserted after being aligned with the steel pipe, the use of a user is convenient, the detection efficiency is increased, the utility model discloses a round platform-shaped plug is arranged, the scale mark is arranged on the limiting, the plug that is round platform form and planar gag lever post are used to lead to the device simultaneously, keep the parallel alignment of plug and the volume of awaiting measuring seamless steel pipe to arrange, guarantee that the inside slide bar of plug is located seamless steel pipe's axle center position department after the plug inserts seamless steel pipe inside completely, promote the accuracy that the steel pipe internal diameter detected, can once only detect simultaneously and observe the internal diameter, external diameter and the wall thickness of seamless steel pipe, and round platform form plug not only can be convenient for insert inside the steel pipe and detect, and can detect the steel pipe in different apertures in the certain extent, promote detection efficiency.

Drawings

Fig. 1 is a schematic front view of the internal structure of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural view of the present invention during measurement and use;

FIG. 4 is an enlarged schematic view of the part A of the present invention;

fig. 5 is an enlarged schematic structural diagram of the B-site of the present invention.

In the figure: 1. a limiting disc; 2. a rubber anti-slip sleeve; 3. a holding rod; 4. mounting grooves; 5. a switch; 6. a storage battery; 7. a chute; 8. a slide bar; 9. a limiting rod; 10. an illuminating lamp; 11. a plug; 12. a hollow cavity; 13. a USB interface; 14. a connecting seat; 15. a through hole; 16. a sealing plug; 17. a compression spring; 18. a piston groove; 19. an air duct; 20. a valve; 21. scale lines are marked.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: a seamless steel pipe inner diameter detection device comprises a connecting seat 14, the connecting seat 14 is cylindrical, a holding rod 3 is welded at the middle position of one end of the connecting seat 14, a plug 11 is welded at the middle position of the other end of the connecting seat 14, the plug 11 is in a circular truncated cone shape, a limiting disc 1 is welded at the edge position of the holding rod 3 far away from the outer side wall of one side of the connecting seat 14, a rubber antiskid sleeve 2 is sleeved outside the holding rod 3 between the limiting disc 1 and the connecting seat 14, a piston groove 18 is arranged at the middle position inside the holding rod 3, one end, close to the connecting seat 14, of the piston groove 18 extends to the edge position of the holding rod 3, an air guide pipe 19 is connected at the middle position of one end, far away from the connecting seat 14, of the air guide pipe 19 is communicated with the piston groove 18, a valve 20 is installed on the air guide pipe 19, a hollow cavity 12 is arranged, two sliding chutes 7 all penetrate through the outer side wall of the plug 11, a through hole 15 penetrates through the axis position inside the connecting seat 14, two ends of the through hole 15 are respectively communicated with the hollow cavity 12 and the piston groove 18, a slide rod 8 penetrates through the inside of the connecting seat 14 at the position of the through hole 15, the slide rod 8 is matched with the through hole 15, one end of the slide rod 8 extends to the inside of the piston groove 18 and is provided with a sealing plug 16 matched with the piston groove 18, an extrusion spring 17 is arranged between one end of the sealing plug 16 far away from the slide rod 8 and the piston groove 18, the other end of the slide rod 8 extends to the inside of the hollow cavity 12 and is welded with a limiting rod 9, the limiting rod 9 is arranged perpendicular to the slide rod 8, scale marks 21 at two sides of the limiting rod 9 are symmetrically arranged, and 0 scale mark on the scale marks 21 at two sides of the limiting rod 9 is superposed and is positioned at the middle position of the limiting rod 9, one end of the slide rod 8, and all be equipped with scale mark 21 on the gag lever post 9 of slide bar 8 both sides, the inside one side of connecting seat 14 in the through-hole 15 outside is equipped with mounting groove 4, the internally mounted of mounting groove 4 has battery 6, install switch 5 on the connecting seat 14 lateral wall of mounting groove 4 position department, the intermediate position department that connecting seat 14 one end was kept away from to plug 11 installs light 10, and light 10 establishes ties mutually through wire and switch 5 and battery 6, one side that switch 5 was kept away from to connecting seat 14 lateral wall is equipped with USB interface 13, and USB interface 13 is connected with battery 6 electricity through the wire.

The working principle is as follows: when the inner diameter of the steel pipe needs to be detected, the valve 20 is kept open, the piston groove 18 is communicated with the outside air at the moment, the sliding rod 8 can slide in the piston groove 18, the switch 5 is selectively opened according to the requirement of light intensity, the lighting lamp 10 is powered by the storage battery 6 and then is illuminated, the holding rod 3 is held by hand, one end of the plug 11 is aligned with the inner hole of the steel pipe and then is inserted into the steel pipe, the extrusion force extrusion device of the hand is utilized, the guide of the circular truncated cone-shaped plug 11 and the planar limiting rod 9 is utilized to ensure that one end of the plug 11 is completely inserted and then is positioned at the axis position of the steel pipe until the outer side wall of the plug 11 is completely contacted with the inner side wall of the steel pipe, the diameter of the outer side wall of the plug 11 at the contact part of the steel pipe and the plug 11 is the inner diameter of the steel pipe, because one, then the valve 19 is closed at this moment, the air tightness of the piston groove 18 is used for limiting the rebound resetting of the slide rod 8 and the limiting rod 9, one end of the limiting rod 9 is kept at the measuring position originally abutting against the steel pipe, then the plug 11 can be separated from the steel pipe and taken out for accurate reading, the minimum numerical value of the outer side wall of the plug 11 extending out of the scale mark 21 on the limiting rod 9 is observed at this moment, and the minimum numerical value of the outer side wall of the plug 11 extending out of the scale mark 21 is multiplied by 2 to obtain the inner diameter of the steel pipe as the slide rod 8 is positioned at the axis position of the connecting seat 14 and the plug 11, when the outer diameter and the wall thickness of the steel pipe need to be detected, the holding device needs to be always tightly inserted into the steel pipe and read, the outer diameter is twice of the reading of the contact position of the.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a seamless steel pipe internal diameter detection device, includes connecting seat (14), its characterized in that: the connecting seat (14) is cylindrical, a holding rod (3) is welded at the middle position of one end of the connecting seat (14), a plug (11) is welded at the middle position of the other end of the connecting seat (14), a limiting disc (1) is welded at the edge position of the outer side wall of one side of the connecting seat (14) far away from the holding rod (3), a piston groove (18) is arranged at the middle position of the interior of the holding rod (3), one end, close to the connecting seat (14), of the piston groove (18) extends to the edge position of the holding rod (3), an air duct (19) is connected at the middle position of one end, far away from the connecting seat (14), of the holding rod (3), one end of the air duct (19) is communicated with the piston groove (18), a valve (20) is installed on the air duct (19), a hollow cavity (12) is arranged in the interior of the plug (11), a pair of sliding grooves (7) are symmetrically arranged on the outer, two spout (7) all run through plug (11) lateral wall, the axle center position department of connecting seat (14) inside has run through-hole (15), the both ends of through-hole (15) are linked together with well cavity (12) and piston groove (18) respectively, the connecting seat (14) inside of through-hole (15) position department has run through slide bar (8), slide bar (8) cooperate with through-hole (15), the one end of slide bar (8) extends to inside of piston groove (18) and is equipped with sealing plug (16) with piston groove (18) matched with, be equipped with extrusion spring (17) between the one end that slide bar (8) were kept away from in sealing plug (16) and piston groove (18), the other end of slide bar (8) extends to well cavity (12) inside and welds gag lever post (9), gag lever post (9) are arranged perpendicularly to slide bar (8), the one end of slide bar (8) welds with the intermediate position department of gag lever post (9), two chutes (7) on the plug (11) are respectively penetrated through at two ends of the limiting rod (9), and all be equipped with scale mark (21) on limiting rod (9) of slide bar (8) both sides, the inside one side of connecting seat (14) in the through-hole (15) outside is equipped with mounting groove (4), the internally mounted of mounting groove (4) has battery (6), install switch (5) on connecting seat (14) lateral wall of mounting groove (4) position department, intermediate position department that connecting seat (14) one end was kept away from in plug (11) installs light (10), and light (10) establish ties mutually through wire and switch (5) and battery (6), one side that switch (5) were kept away from to connecting seat (14) lateral wall is equipped with USB interface (13), and USB interface (13) are connected with battery (6) electricity through the wire.

2. The inside diameter detection device of a seamless steel pipe according to claim 1, characterized in that: the rubber anti-skidding sleeve (2) is sleeved on the outer side of the holding rod (3) between the limiting disc (1) and the connecting seat (14).

3. The inside diameter detection device of a seamless steel pipe according to claim 1, characterized in that: the plug (11) is in a circular truncated cone shape.

4. The inside diameter detection device of a seamless steel pipe according to claim 1, characterized in that: the scale marks (21) on the two sides of the limiting rod (9) are symmetrically arranged, and the 0 scale mark on the scale marks (21) on the two sides of the limiting rod (9) is overlapped and positioned in the middle of the limiting rod (9).