CN216791060U - Device for measuring wall thickness of steel pipe based on horizontal direction - Google Patents

Abstract

The utility model discloses a device for measuring the wall thickness of a steel pipe based on the horizontal direction, and belongs to the technical field of steel pipe measurement. The device for measuring the wall thickness of the steel pipe in the horizontal direction comprises a bottom plate, two first supports, a second support, two third supports, a fourth support, a first movable support, a second movable support, six measuring rods, two positioning rods, four first wheels, eight second wheels, four first hinges, eight second hinges, twenty-four screw rods and twenty-four nuts, can achieve the purpose of measuring and calculating the wall thickness of the steel pipe, and has the advantages of being low in manufacturing cost, simple to operate and high in measuring accuracy.

Description

Device for measuring wall thickness of steel pipe based on horizontal direction

Technical Field

The utility model belongs to the technical field of steel pipe measurement, and particularly relates to a device for measuring the wall thickness of a steel pipe in the horizontal direction.

Background

At present, need measure its wall thickness in the production and processing field of steel pipe, traditional measuring device either based on vernier caliper formula, or based on spiral micrometering formula, though only need carry out once direct measurement and just can accomplish the thickness measurement task, because these measuring device do not have the device of axis location, consequently, traditional measuring device can not guarantee to measure along the radial of steel pipe, and the reliability of measuring promptly is difficult to guarantee.

Patent document CN102052885A discloses a pipe wall thickness measuring device, which mainly comprises a dial gauge, a measuring rocker arm, a base, a V-shaped support, a fixed measuring head, a measuring head of the dial gauge, a heavy hammer, a guide post and a slide block.

Patent document CN201378035Y discloses a portable high-precision measuring device for measuring the thickness of the inner wall of a seamless steel tube, which mainly comprises a bracket, a measuring tool, a measuring arm, an adjusting screw, a positioning nut and a measuring ball.

Patent document CN202814292U discloses a multifunctional wall thickness measuring instrument, which mainly comprises a ruler body, a fixed measuring jaw, a movable measuring jaw, an auxiliary measuring block, a movable vernier ruler frame, a fixed ruler frame, a fine adjustment device, a fastening screw, a limiting block and a guide block.

SUMMERY OF THE UTILITY MODEL

The utility model provides a device for measuring the wall thickness of a steel pipe based on the horizontal direction, which comprises: the device comprises a bottom plate, two first supports, a second support, two third supports, a fourth support, a first movable support, a second movable support, six measuring rods, two positioning rods, four first wheels, eight second wheels, four first hinges, eight second hinges, twenty-four screw rods and twenty-four nuts;

the bottom plate is of a cuboid symmetrical structure, two groups of four cylindrical first through holes are symmetrically formed in the right end of the bottom plate, the screw rod penetrates through the first through holes, and one end of the screw rod is screwed with the nut; two cuboid-shaped first grooves are symmetrically formed in the upper surface of the bottom plate and used for guiding the first wheels;

the first bracket is formed by connecting two first main bodies and two first auxiliary bodies; the first main body and the first auxiliary bodies are both of rectangular symmetrical structures, and the two first auxiliary bodies are positioned between the two first main bodies; each first main body is symmetrically provided with two cylindrical second through holes, and the screw rods penetrate through the second through holes;

the second bracket is formed by connecting a second main body and two second auxiliary bodies; the second main body and the second auxiliary bodies are of rectangular symmetrical structures, and the two second auxiliary bodies are positioned on the front end face and the rear end face of the second main body; each second auxiliary body is symmetrically provided with two cylindrical third through holes, and the screw rod penetrates through the third through holes; the upper surface of the second main body is provided with a semi-cylindrical first through groove for penetrating a steel pipe;

the third bracket is formed by connecting two third main bodies and two third auxiliary bodies; the third main body and the third auxiliary bodies are both of rectangular symmetrical structures, and the two third auxiliary bodies are positioned between the two third main bodies; each third main body is symmetrically provided with four cylindrical fourth through holes, and the screw rods penetrate through the fourth through holes;

the fourth bracket is formed by connecting a sixth main body and two ninth auxiliary bodies, and the two ninth auxiliary bodies are positioned on the upper end surface of the sixth main body; the ninth auxiliary body is of a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the side surface of each ninth auxiliary body along the circumferential direction; a third screw hole is formed in the axis position of each ninth auxiliary body, and the measuring rod is screwed in the third screw hole; the third screw hole also penetrates through the sixth main body; the sixth main body is of a cuboid-shaped symmetrical structure, two groups of eight cylindrical eighth through holes are symmetrically formed in the sixth main body, and the screw rod penetrates through the eighth through holes; two cuboid-shaped third grooves are symmetrically formed in the lower surface of the sixth main body and used for guiding the second wheel;

the first movable support is formed by connecting a fourth main body, four fourth auxiliary bodies and two fifth auxiliary bodies, the fourth main body and the fourth auxiliary bodies are of rectangular symmetrical structures, and the four fourth auxiliary bodies and the two fifth auxiliary bodies are located on the lower end face of the fourth main body; each fourth auxiliary body is provided with a second rectangular through groove, and the first wheel penetrates through the second through groove; two sides of each second through groove are provided with a cylindrical fifth through hole, and the first hinge penetrates through the fifth through hole; the fifth auxiliary bodies are of cylindrical symmetrical structures, and fifty grid scales are uniformly marked on the side surface of each fifth auxiliary body along the circumferential direction; a first screw hole is formed in the axis position of each fifth auxiliary body, and the measuring rod is screwed in the first screw hole; the first screw hole also penetrates through the fourth main body; two groups of eight cylindrical sixth through holes are symmetrically formed in the fourth main body, and the screw rod penetrates through the sixth through holes; two second rectangular grooves are symmetrically formed in the upper surface of the fourth main body and used for guiding the second wheels;

the second movable support is formed by connecting two fifth main bodies, eight sixth auxiliary bodies, four seventh auxiliary bodies and four eighth auxiliary bodies, the fifth main bodies, the sixth auxiliary bodies and the seventh auxiliary bodies are of rectangular symmetrical structures, the four seventh auxiliary bodies are positioned between the two fifth main bodies, the upper end face of the fifth main body positioned on the upper side is symmetrically provided with the four sixth auxiliary bodies, the lower end face of the fifth main body positioned on the lower side is symmetrically provided with the two eighth auxiliary bodies, the lower end face of the fifth main body positioned on the lower side is symmetrically provided with the other four sixth auxiliary bodies, and the upper end face of the fifth main body positioned on the lower side is symmetrically provided with the other two eighth auxiliary bodies; each sixth auxiliary body is provided with a third rectangular through groove, and the second wheel penetrates through the third through groove; two sides of each third through groove are provided with a cylindrical seventh through hole, and the second hinge penetrates through the seventh through hole; the eighth auxiliary body is of a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the side surface of each eighth auxiliary body along the circumferential direction; a second screw hole is formed in the axis position of each eighth auxiliary body, the measuring rod is screwed in the two second screw holes in the right side, and the positioning rod is screwed in the two second screw holes in the left side; the second screw hole also penetrates through the fifth main body;

the measuring rod is formed by connecting a first contact section, a first thread section and a first scale section which are coaxial; the first contact section is of a hemispheroid symmetrical structure and is used for contacting the inner surface and the outer surface of the steel pipe; the first thread section is a cylindrical symmetrical structure with threads on the side surface and is used for screwing the first screw hole, the second screw hole or the third screw hole, and the thread pitch value of the threads arranged on the first thread section is 0.5 mm; the first scale section is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum division value of each group of scales is 1mm, the first scale section is composed of two adjacent staggered lines of scales on the left and right, and the staggered value of the two staggered lines of scales is 0.5 mm;

the positioning rod is formed by connecting a second contact section, a second thread section and a second scale section which are coaxial; the second contact section is of a round table-shaped symmetrical structure and is used for contacting a fourth main body of the first movable support or a sixth main body of the fourth support; the second thread section is a cylindrical symmetrical structure with threads on the side surface and is used for screwing a second screw hole of the second movable support, and the thread pitch value of the threads arranged on the second thread section is 0.5 mm; the second scale section is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum division value of each group of scales is 1mm, the second scale section is composed of two adjacent staggered lines of scales on the left and right, and the staggered value of the two staggered lines of scales is 0.5 mm;

the first wheel, the second wheel, the first hinge, the second hinge, the screw and the nut are all standard parts.

The device for measuring the wall thickness of the steel pipe in the horizontal direction comprises a bottom plate, two first supports, a second support, two third supports, a fourth support, a first movable support, a second movable support, six measuring rods, two positioning rods, four first wheels, eight second wheels, four first hinges, eight second hinges, twenty-four screw rods and twenty-four nuts.

When the device is used, a steel pipe is arranged in a first through groove of a second support, six measuring rods and two positioning rods are screwed to zero scale positions, a first movable support vehicle is pushed rightwards along a first groove, the device is sleeved at the end part of the steel pipe, a second movable support vehicle is pushed rightwards along a second groove so as to center a, b, c and d along the vertical direction, the two positioning rods are respectively screwed in to respectively screw in a, b, c and d, the four measuring rods are respectively contacted with the inner surface or the outer surface of the steel pipe, and the screwing distances delta a, Ab, delta c and delta d of a, b, c and d are respectively read, so that the device is relatively simple to operate.

The device is designed based on a symmetrical structure, and the first movable support vehicle and the bottom plate are jointly used, so that the first movable support vehicle can move according to a preset track; the first movable support, the third support and the fourth support are used jointly, so that the second movable support vehicle can move according to a preset track; the bottom plate, the first bracket and the second bracket are used in a combined manner, so that the steel pipe can be positioned; the six measuring rods, the first movable support, the second movable support and the fourth support are combined for use, six spiral micrometer gauges can be formed, and therefore the wall thickness of the steel pipe can be accurately measured, and therefore the device is high in measuring accuracy.

The device for measuring the wall thickness of the steel pipe based on the horizontal direction can achieve the purpose of measuring and calculating the wall thickness of the steel pipe, and has the characteristics of low manufacturing cost, simplicity in operation and high measurement precision.

Drawings

FIG. 1 is a schematic structural view of a device for measuring the wall thickness of a steel pipe in the horizontal direction before measurement according to the present invention;

FIG. 2 is a left side view schematic diagram of the device for measuring the wall thickness of the steel pipe in the horizontal direction according to the present invention before measurement;

FIG. 3 is a schematic top view of the apparatus for measuring the wall thickness of a steel pipe in the horizontal direction according to the present invention;

FIG. 4 is a schematic structural diagram of a device for measuring the wall thickness of a steel pipe in the horizontal direction according to the present invention in a front view;

FIG. 5 is a left side view schematic diagram of the device for measuring the wall thickness of the steel pipe in the horizontal direction according to the present invention;

FIG. 6 is a schematic top view of the base plate of the present invention;

FIG. 7 is a front view of a first bracket of the present invention;

FIG. 8 is a schematic top view of a first bracket of the present invention;

FIG. 9 is a left side view of the second bracket of the present invention;

FIG. 10 is a schematic top view of a second bracket of the present invention;

FIG. 11 is a schematic front view of the measuring rod of the present invention;

FIG. 12 is a front view of a third bracket of the present invention;

FIG. 13 is a schematic top view of a third bracket of the present invention;

FIG. 14 is a front view of the first movable bracket of the present invention assembled with a first wheel;

FIG. 15 is a left side elevational view of the first movable bracket and first wheel of the present invention shown assembled;

FIG. 16 is a top view schematic of the first mobile bracket and first wheel of the present invention after assembly;

FIG. 17 is a bottom view of the first movable bracket and the first wheel assembly of the present invention;

FIG. 18 is a front elevational view in schematic form after assembly of a second movable bracket and a second wheel in accordance with the present invention;

FIG. 19 is a left side elevational view of the second movable bracket and second wheel of the present invention shown assembled;

FIG. 20 is a top view of the second movable bracket and second wheel assembly of the present invention;

FIG. 21 is a schematic front view of a positioning rod of the present invention;

FIG. 22 is a front view of a fourth bracket of the present invention;

FIG. 23 is a schematic top view of a fourth bracket of the present invention;

FIG. 24 is a bottom view of a fourth bracket of the present invention;

FIG. 25 is a schematic view showing the operation of the apparatus for measuring the wall thickness of a steel pipe in the horizontal direction according to the present invention before measurement;

FIG. 26 is a schematic view showing the operation principle of the apparatus for measuring the wall thickness of a steel pipe in the horizontal direction according to the present invention.

Description of reference numerals: 1-a bottom plate; 101-a first via; 102-a first groove; 2-a first scaffold; 201-a first body; 202-a first appendage; 203-a second via; 3-a second scaffold; 301-a second appendage; 302-a second body; 303-a first through slot; 304-a third via; 4-measuring rod; 401 — a first contact section; 402-a first thread segment; 403-a first graduated section; 5-a third support; 501-third auxiliary body; 502-a third body; 503-a fourth via; 6-a first movable support; 601-a fifth via; 602-fourth appendage; 603-a fourth body; 604-fifth appendage; 605-a second through slot; 606-a sixth via; 607-a first screw hole; 608-a second groove; 7-a second movable support; 701-the sixth appendage; 702-a seventh via; 703-a fifth body; 704-seventh appendage; 705-eighth appendage; 706-a third through slot; 707-a second screw hole; 8-positioning the rod; 801-a second contact section; 802-a second thread segment; 803-second scale segment; 9-a fourth scaffold; 901-the ninth appendage; 902-a sixth body; 903-eighth through hole; 904-third screw hole; 905-a third groove; 10-a steel pipe; 11-a screw; 12-a nut; a13 — first round; b13 — second round; a 14-first hinge; b 14-second hinge.

Detailed Description

The present invention will be described in detail below with reference to examples and drawings, which are provided for understanding the present invention and are not intended to limit the present invention.

As shown in fig. 1 to 5, the device for measuring the wall thickness of a steel pipe based on the horizontal direction provided by the utility model comprises a bottom plate 1, two first brackets 2, a second bracket 3, two third brackets 5, a fourth bracket 9, a first movable bracket 6, a second movable bracket 7, six measuring rods 4, two positioning rods 8, four first wheels a13, eight second wheels b13, four first hinges a14, eight second hinges b14, twenty-four screw rods 11 and twenty-four nuts 12, wherein each component can be made of a metal material.

Referring to fig. 6, the bottom plate 1 is a rectangular symmetrical structure, two groups of four cylindrical first through holes 101 are symmetrically formed in the right end of the bottom plate 1, the screw 11 penetrates through the first through holes 101, and one end of the screw 11 is used for screwing the nut 12; two first grooves 102 in a rectangular parallelepiped shape are symmetrically formed in the upper surface of the base plate 1, and are used for guiding the first wheel a 13.

As shown in fig. 7 and 8, the first bracket 2 is formed by connecting two first main bodies 201 and two first auxiliary bodies 202; the first main body 201 and the first auxiliary bodies 202 are both rectangular parallelepiped symmetrical structures, and two first auxiliary bodies 202 are located between two first main bodies 201; each first main body 201 is symmetrically provided with two cylindrical second through holes 203, and the screw 11 penetrates through the second through holes 203.

As shown in fig. 9 and 10, the second bracket 3 is formed by connecting a second main body 302 and two second auxiliary bodies 301; the second main body 302 and the second auxiliary bodies 301 are both of a cuboid-shaped symmetrical structure, and the two second auxiliary bodies 301 are positioned on the front end face and the rear end face of the second main body 302; each second auxiliary body 301 is symmetrically provided with two cylindrical third through holes 304, and the screw 11 penetrates through the third through holes 304; the upper surface of the second main body 302 is provided with a first through groove 303 in a semi-cylindrical shape for penetrating the steel pipe 10.

As shown in fig. 12 and 13, the third bracket 5 is formed by connecting two third main bodies 502 and two third auxiliary bodies 501; the third main body 502 and the third auxiliary bodies 501 are both rectangular symmetrical structures, and two third auxiliary bodies 501 are located between two third main bodies 502; each third body 502 is symmetrically provided with four cylindrical fourth through holes 503, and the screw 11 penetrates through the fourth through holes 503.

As shown in fig. 22 to 24, the fourth bracket 9 is formed by connecting a sixth main body 902 and two ninth auxiliary bodies 901, and the two ninth auxiliary bodies 901 are located on the upper end surface of the sixth main body 902; the ninth auxiliary body 901 is a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the side surface of each ninth auxiliary body 901 along the circumferential direction; a third screw hole 904 is formed in the axis position of each ninth auxiliary body 901, and the measuring rod 4 is screwed in the third screw hole 904; the third screw hole 904 also penetrates through the sixth body 902; the sixth body 902 is a cuboid-shaped symmetrical structure, two groups of eight cylindrical eighth through holes 903 are symmetrically formed in the sixth body 902, and the screw 11 penetrates through the eight through holes 903; two third grooves 905 in a rectangular parallelepiped shape are symmetrically formed in the lower surface of the sixth body 902, and are used for guiding the second wheel b 13.

As shown in fig. 14 to 17, the first movable bracket 6 is formed by connecting a fourth main body 603, four fourth auxiliary bodies 602 and two fifth auxiliary bodies 604, the fourth main body 603 and the fourth auxiliary bodies 602 are both rectangular parallelepiped symmetric structures, and the four fourth auxiliary bodies 602 and the two fifth auxiliary bodies 604 are both located on the lower end surface of the fourth main body 603; each fourth auxiliary body 602 is provided with a second through groove 605 in a rectangular shape, and the first wheel a13 penetrates through the second through groove 605; two sides of each second through groove 605 are respectively provided with a cylindrical fifth through hole 601, and the first hinge a14 penetrates through the fifth through hole 601; the fifth auxiliary bodies 604 are cylindrical symmetrical structures, and fifty dividing scales are uniformly marked on the side surface of each fifth auxiliary body 604 along the circumferential direction; a first screw hole 607 is formed in the axis position of each fifth auxiliary body 604, and the measuring rod 4 is screwed in the first screw hole 607; the first screw hole 607 also penetrates the fourth body 603; two groups of eight cylindrical sixth through holes 606 are symmetrically formed in the fourth main body 603, and the screw 11 penetrates through the sixth through holes 606; two second grooves 608 in a rectangular parallelepiped shape are symmetrically formed in the upper surface of the fourth main body 603, and are used for guiding the second wheel b 13.

As shown in fig. 18 to 20, the second movable bracket 7 is formed by connecting two fifth main bodies 703, eight sixth auxiliary bodies 701, four seventh auxiliary bodies 704 and four eighth auxiliary bodies 705, the fifth main body 703, the sixth auxiliary bodies 701 and the seventh auxiliary bodies 704 are all of a rectangular parallelepiped symmetric structure, the four seventh auxiliary bodies 704 are located between the two fifth main bodies 703, the four sixth auxiliary bodies 701 are symmetrically arranged on the upper end surface of the upper fifth main body 703, the two eighth auxiliary bodies 705 are symmetrically arranged on the lower end surface of the upper fifth main body 703, the other four sixth auxiliary bodies 701 are symmetrically arranged on the lower end surface of the lower fifth main body 703, and the other two eighth auxiliary bodies 705 are symmetrically arranged on the upper end surface of the lower fifth main body 703; each sixth auxiliary body 701 is provided with a third rectangular through groove 706, and the second wheel b13 penetrates through the third through groove 706; two sides of each third through groove 706 are respectively provided with a cylindrical seventh through hole 702, and the second hinge b14 penetrates through the seventh through hole 702; the eighth auxiliary bodies 705 are cylindrical symmetrical structures, and fifty grid scales are uniformly marked on the side surface of each eighth auxiliary body 705 along the circumferential direction; a second screw hole 707 is formed in the axis position of each eighth auxiliary body 705, the measuring rod 4 is screwed in the two second screw holes 707 on the right, and the positioning rod 8 is screwed in the two second screw holes 707 on the left; the second screw hole 707 also penetrates the fifth body 703.

As shown in fig. 11, the measuring rod 4 is formed by connecting a first contact section 401, a first thread section 402 and a first scale section 403 which are coaxial; the first contact section 401 is a hemispheroid symmetrical structure and is used for contacting the inner surface and the outer surface of the steel pipe 10; the first thread section 402 is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing the first screw hole 607, the second screw hole 707 or the third screw hole 904, and the thread pitch value of the threads arranged on the first thread section 402 is 0.5 mm; the first scale section 403 is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum division value of each group of scales is 1mm, the first scale section is composed of two adjacent left and right staggered scales, and the staggered value of the two staggered scales is 0.5 mm.

As shown in fig. 21, the positioning rod 8 is composed of a second contact section 801, a second threaded section 802 and a second scale section 803 which are coaxial; the second contact section 801 is a truncated cone-shaped symmetrical structure and is used for contacting the fourth main body 603 of the first movable bracket 6 or the sixth main body 902 of the fourth bracket 9; the second thread section 802 is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing a second thread hole 707 of the second movable support 7, and the thread pitch value of the threads arranged on the second thread section 802 is 0.5 mm; the second scale section 803 is a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum grid value of each group of scales is 1mm, the second scale section is composed of two adjacent left and right staggered scales, and the staggered value of the two staggered scales is 0.5 mm.

The utility model provides an assembling method of a device for measuring the wall thickness of a steel pipe based on the horizontal direction, which comprises the following steps:

as shown in fig. 1 to 24, first, one first wheel a13 is inserted into each of the four second through slots 605 of the first movable bracket 6, then the axle holes of the four first wheels a13 are aligned with the four fifth through holes 601 of the first movable bracket 6, and then one first hinge a14 is installed in each of the four aligned through holes, so that the first movable bracket 6 and the four first wheels a13 can be assembled into a first movable bracket vehicle;

then, each of the eight third through grooves 706 of the second movable bracket 7 is provided with one second wheel b13, and then the axle holes of the eight second wheels b13 are aligned with the eight seventh through holes 702 of the second movable bracket 7, and then each of the eight sets of aligned through holes is provided with one second hinge b14, so that the second movable bracket 7 and the eight second wheels b13 can be assembled into a second movable bracket vehicle;

then, the base plate 1 is arranged on an installation platform, the opening of the first groove 102 of the base plate 1 is ensured to be arranged upwards, then two first brackets 2 are arranged on the base plate 1, then four second through holes 203 with two first brackets 2 positioned at the lower part are aligned with four first through holes 101 of the base plate 1, then one screw rod 11 is respectively arranged in the through holes in four pairs, then one nut 12 is respectively screwed at the other end of each of the four screw rods 11, then the second bracket 3 is arranged on the two first brackets 2, then four third through holes 304 of the second bracket 3 are aligned with four second through holes 203 with two first brackets 2 positioned at the upper part, then one screw rod 11 is respectively arranged in the through holes in four pairs, then one nut 12 is respectively screwed at the other end of each of the four screw rods 11, thus, the second bracket 3, the two first brackets 2, and the bottom plate 1 can be assembled;

then, two third brackets 5 are arranged on a fourth main body 603 of the first movable bracket 6, then, eight fourth through holes 503 of the two third brackets 5 at the lower positions are aligned with eight sixth through holes 606 of the first movable bracket 6, then, one screw 11 is respectively arranged in the through holes of eight pairs, then, one nut 12 is respectively screwed on the other end of each of the eight screw 11, and then, the second movable bracket vehicle is arranged on the first movable bracket 6, so that four second wheels b13 at the lower positions are simultaneously positioned in two second grooves 608 of the first movable bracket 6, and thus, the two third brackets 5, the second movable bracket vehicle and the first movable bracket 6 can be assembled;

then, two of the measuring rods 4 are screwed into two first screw holes 607 of the first movable support 6, then the other two measuring rods 4 are screwed into two second screw holes 707 of the second movable support 7 at the right, then the remaining two measuring rods 4 are screwed into two third screw holes 904 of the fourth support 9, and then the two positioning rods 8 are screwed into the other two second screw holes 707 of the second movable support 7 at the left, so that six measuring rods 4 and two positioning rods 8 can be screwed into corresponding screw holes;

then, the fourth bracket 9 is arranged on the two third brackets 5, the four second wheels b13 at the upper position are ensured to be simultaneously positioned in the two third grooves 905 of the fourth bracket 9, then, the eight eighth through holes 903 of the fourth bracket 9 and the eight fourth through holes 503 at the two third brackets 5 are aligned, then, one screw 11 is respectively arranged in the through holes in the eight pairs, then, one nut 12 is respectively screwed on the other ends of the eight screw 11, and finally, the first movable bracket vehicle is arranged on the bottom plate 1, the four first wheels a13 are ensured to be simultaneously positioned in the two first grooves 102 of the bottom plate 1, so that the whole device is assembled and can be put into use.

The utility model provides a device for measuring the wall thickness of a steel pipe in the horizontal direction, which has the working principle that:

as shown in fig. 25, for convenience of description, it is not required to set the four measuring rods 4 located at the near end of the steel pipe 10 as a, b, c, and d, the two measuring rods 4 located at the far end of the steel pipe 10 as e and f, and the two positioning rods 8 as g and h, respectively; a distance between the fourth body 603 of the first movable holder 6 and the fifth body 703 of the second movable holder 7 at the lower position is m, and a distance between the fifth body 703 of the second movable holder 7 at the upper position and the sixth body 902 of the fourth holder 9 is m; for convenience of measurement, the radius of the first contact section 401 of the measuring rod 4 is not set to be r, and then the six first contact sections 401 of the six measuring rods 4 located at the zero scale position extend all the way, that is, the extending distances of the a, the b, the c, the d, the e and the f are all r;

as shown in fig. 26, the present invention is designed with a symmetrical structure, so that it is ensured that a, b, c and d are arranged along the radial direction of the steel pipe 10; when the wall thickness of the steel pipe 10 is measured, the relationship between a and d and the circular outer tangent of the steel pipe 10, and the relationship between b and c and the circular inner tangent of the steel pipe 10, respectively, the precession lengths of a, b, c and d are set to Δ a, Δ b, Δ c and Δ d, and the wall thicknesses measured by a and b are set to Δ a, Δ b, Δ c and Δ d, respectively

Setting the wall thickness measured by c and d as

From this property that the distance between parallel planes is equal everywhere, the following two equations can be obtained:

after the work-up, the following two equations can be obtained:

as shown in fig. 26, the combined use of six first scale sections 403 of the measuring rod 4 and two fifth auxiliary bodies 604 of the first movable support 6, two eighth auxiliary bodies 705 of the second movable support 7 and two ninth auxiliary bodies 901 of the fourth support 9 can form six spiral micrometers, the measuring accuracy of the six spiral micrometers can reach 0.01mm, and the reasoning process is as follows: since the thread pitch values of the first screw hole 607, the second screw hole 707 and the third screw hole 904 are all 0.5mm, that is, the axial distance moved by each rotation of the measuring rod 4 is 0.5mm, and since fifty division scales are uniformly marked on the side surfaces of the fifth auxiliary body 604, the eighth auxiliary body 705 and the ninth auxiliary body 901 along the circumferential direction, the axial distance moved by the measuring rod 4 within the corresponding screw hole is 0.01mm by each rotation of the measuring rod 4.

The device for measuring the wall thickness of the steel pipe based on the horizontal direction provided by the utility model has the following use process:

step 1: as shown in fig. 1 to 3, firstly, the steel tube 10 is arranged in the first through groove 303 of the second bracket 3, then the six measuring rods 4 and the two positioning rods 8 are all screwed to zero scale positions, then the first movable bracket vehicle is pushed rightwards along the first groove 102, the device of the present invention is sleeved on the end of the steel tube 10, then the second movable bracket vehicle is pushed rightwards along the second groove 608, so as to center the a, the b, the c and the d in the vertical direction, and then the two positioning rods 8 are respectively screwed slowly to position the second movable bracket vehicle;

step 2: as shown in the figure26, then screwing in the a, the b, the c and the d respectively, and contacting the four first contact sections 401 of the a, the b, the c and the d to the inner surface or the outer surface of the steel pipe 10 respectively; then the distance Δ a, Δ b, Δ c and Δ d of the precession of said a, said b, said c and said d, respectively, are read, and then the distance m between said fourth body 603 and said fifth body 703, the radius r of the first contact section 401 of said measuring rod 4, are measured, by means of the formula

The steel pipe 10 can be calculated

Location and

wall thickness of location

And wall thickness

Supplementary notes: the six first scale sections 403 of the six measuring rods 4 and the initial scales of the two fifth auxiliary bodies 604 of the first movable bracket 6, the two eighth auxiliary bodies 705 of the second movable bracket 7 and the two ninth auxiliary bodies 901 of the fourth bracket 9 are all kept aligned to ensure the effectiveness of the measurement.

The embodiment shows that the device for measuring the wall thickness of the steel pipe based on the horizontal direction can achieve the purpose of measuring and calculating the wall thickness of the steel pipe 10 arranged in the first through groove 303 of the second bracket 3, and has the characteristics of low manufacturing cost, simplicity in operation and high measurement precision.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (1)

1. A device for measuring the wall thickness of a steel pipe based on the horizontal direction is characterized by comprising the following components: the device comprises a bottom plate (1), two first supports (2), a second support (3), two third supports (5), a fourth support (9), a first movable support (6), a second movable support (7), six measuring rods (4), two positioning rods (8), four first wheels (a13), eight second wheels (b13), four first hinges (a14), eight second hinges (b14), twenty-four screw rods (11) and twenty-four nuts (12);

the bottom plate (1) is of a cuboid symmetrical structure, two groups of four cylindrical first through holes (101) are symmetrically formed in the right end of the bottom plate (1), the screw rod (11) penetrates through the first through holes (101), and one end of the screw rod (11) is screwed with the nut (12); the upper surface of the bottom plate (1) is symmetrically provided with two cuboid first grooves (102) for guiding the first wheels (a 13);

the first bracket (2) is formed by connecting two first main bodies (201) and two first auxiliary bodies (202); the first main body (201) and the first auxiliary bodies (202) are both rectangular parallelepiped symmetrical structures, and the two first auxiliary bodies (202) are positioned between the two first main bodies (201); each first main body (201) is symmetrically provided with two cylindrical second through holes (203), and the screw (11) penetrates through the second through holes (203);

the second bracket (3) is formed by connecting a second main body (302) and two second auxiliary bodies (301); the second main body (302) and the second auxiliary bodies (301) are both rectangular parallelepiped symmetrical structures, and the two second auxiliary bodies (301) are positioned on the front end face and the rear end face of the second main body (302); each second auxiliary body (301) is symmetrically provided with two cylindrical third through holes (304), and the screw rod (11) penetrates through the third through holes (304); the upper surface of the second main body (302) is provided with a semi-cylindrical first through groove (303) for penetrating a steel pipe;

the third bracket (5) is formed by connecting two third main bodies (502) and two third auxiliary bodies (501); the third main bodies (502) and the third auxiliary bodies (501) are both rectangular parallelepiped symmetrical structures, and the two third auxiliary bodies (501) are positioned between the two third main bodies (502); each third main body (502) is symmetrically provided with four cylindrical fourth through holes (503), and the screw rod (11) penetrates through the fourth through holes (503);

the fourth bracket (9) is formed by connecting a sixth main body (902) and two ninth auxiliary bodies (901), and the two ninth auxiliary bodies (901) are positioned on the upper end face of the sixth main body (902); the ninth auxiliary bodies (901) are in a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the side surface of each ninth auxiliary body (901) along the circumferential direction; a third screw hole (904) is formed in the axis position of each ninth auxiliary body (901), and the measuring rod (4) is screwed in the third screw hole (904); the third screw hole (904) also penetrates through the sixth body (902); the sixth main body (902) is a cuboid-shaped symmetrical structure, two groups of eight cylindrical eighth through holes (903) are symmetrically formed in the sixth main body (902), and the screw rod (11) penetrates through the eight through holes (903); two cuboid-shaped third grooves (905) are symmetrically formed in the lower surface of the sixth main body (902) and used for guiding the second wheel (b 13);

the first movable support (6) is formed by connecting a fourth main body (603), four fourth auxiliary bodies (602) and two fifth auxiliary bodies (604), the fourth main body (603) and the fourth auxiliary bodies (602) are both rectangular symmetrical structures, and the four fourth auxiliary bodies (602) and the two fifth auxiliary bodies (604) are both positioned on the lower end face of the fourth main body (603); each fourth auxiliary body (602) is provided with a second rectangular through groove (605), and the first wheel (a13) penetrates through the second through groove (605); two sides of each second through groove (605) are provided with a cylindrical fifth through hole (601), and the first hinge (a14) penetrates through the fifth through hole (601); the fifth auxiliary bodies (604) are of cylindrical symmetrical structures, and fifty grid scales are uniformly marked on the side surface of each fifth auxiliary body (604) along the circumferential direction; a first screw hole (607) is formed in the axis position of each fifth auxiliary body (604), and the measuring rod (4) is screwed in the first screw hole (607); the first screw hole (607) also penetrates through the fourth main body (603); two groups of eight cylindrical sixth through holes (606) are symmetrically formed in the fourth main body (603), and the screw rod (11) penetrates through the sixth through holes (606); two second grooves (608) in a cuboid shape are symmetrically formed in the upper surface of the fourth main body (603) and used for guiding the second wheels (b 13);

the second movable support (7) is formed by connecting two fifth main bodies (703), eight sixth auxiliary bodies (701), four seventh auxiliary bodies (704) and four eighth auxiliary bodies (705), the fifth main bodies (703), the sixth auxiliary bodies (701) and the seventh auxiliary bodies (704) are of a rectangular symmetrical structure, the four seventh auxiliary bodies (704) are located between the two fifth main bodies (703), the four sixth auxiliary bodies (701) are symmetrically arranged on the upper end face of the upper fifth main body (703), the two eighth auxiliary bodies (705) are symmetrically arranged on the lower end face of the upper fifth main body (703), the other four sixth auxiliary bodies (701) are symmetrically arranged on the lower end face of the lower fifth main body (703), and the other two eighth auxiliary bodies (705) are symmetrically arranged on the upper end face of the lower fifth main body (703); each sixth auxiliary body (701) is provided with a third rectangular through groove (706), and the second wheel (b13) penetrates through the third through groove (706); both sides of each third through groove (706) are provided with a cylindrical seventh through hole (702), and the second hinge (b14) penetrates through the seventh through hole (702); the eighth auxiliary bodies (705) are of cylindrical symmetrical structures, and fifty grid scales are uniformly marked on the side surface of each eighth auxiliary body (705) along the circumferential direction; a second screw hole (707) is formed in the axis position of each eighth auxiliary body (705), the measuring rod (4) is screwed in the two second screw holes (707) at the right position, and the positioning rod (8) is screwed in the two second screw holes (707) at the left position; the second screw hole (707) also penetrates through the fifth main body (703);

the measuring rod (4) is formed by connecting a first contact section (401), a first thread section (402) and a first scale section (403) which are coaxial; the first contact section (401) is of a hemispheroid symmetrical structure and is used for contacting the inner surface and the outer surface of the steel pipe; the first thread section (402) is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing the first screw hole (607), the second screw hole (707) or the third screw hole (904), and the thread pitch value of the threads arranged on the first thread section (402) is 0.5 mm; the first scale section (403) is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum grid value of each group of scales is 1mm, the first scale section is composed of two adjacent staggered lines of scales on the left and right, and the staggered value of the two staggered lines of scales is 0.5 mm;

the positioning rod (8) is formed by connecting a coaxial second contact section (801), a second thread section (802) and a second scale section (803); the second contact section (801) is of a truncated cone-shaped symmetrical structure and is used for contacting a fourth main body (603) of the first movable bracket (6) or a sixth main body (902) of the fourth bracket (9); the second thread section (802) is a cylindrical symmetrical structure with threads on the side surface and is used for screwing a second screw hole (707) of the second movable support (7), and the thread pitch value of the threads arranged on the second thread section (802) is 0.5 mm; the second scale section (803) is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, the minimum grid value of each group of scales is 1mm, the second scale section is composed of two adjacent staggered lines of scales on the left and right, and the staggered value of the two staggered lines of scales is 0.5 mm;

the first wheel (a13), the second wheel (b13), the first hinge (a14), the second hinge (b14), the screw (11), and the nut (12) are all standard pieces.

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