CN215879247U - Device for drawing steel pipe side flatness - Google Patents

Abstract

The utility model discloses a device for drawing the straightness of the side surface of a steel pipe, and belongs to the technical field of machinery. The device for drawing the steel pipe side flatness comprises four cushion blocks, a bottom plate, a top plate, two support plates, two rollers, four bearing supports, a first support, a second support, two pen caps, a pen cap, a pen core, a round bar, a spring, a drawing, four magnets, four rolling bearings, a first wheel, four second wheels, a first hinge, four second hinges, twenty-four first screw rods, eight second screw rods, twenty-four first nuts and eight second nuts.

Description

Device for drawing steel pipe side flatness

Technical Field

The utility model belongs to the technical field of machinery, and particularly relates to a device for drawing the straightness of the side surface of a steel pipe.

Background

At present, in seamless steel pipe production enterprises, hot rolling perforation, continuous rolling pipe and tension reducing pipe manufacturing processes are generally adopted, in order to improve the comprehensive performance of steel pipes, the steel pipes are required to be subjected to relevant heat treatment, the steel pipes are influenced by factors such as self gravity, rolling force or cooling unevenness, quality problems such as similar bending or ellipse and the like are always generated along the axial direction of the steel pipes, the appearance size precision of the steel pipes is directly influenced, the use performance and the processing performance of the steel pipes are further influenced, and the concept of straightness is introduced to reflect the degree of defects, so that in many machining industries using the steel pipes as raw materials, although the straightness of the steel pipes can be strictly measured, the measured data cannot be recorded and stored.

Document CN205383979U is a silk-meter level object surface flatness drawing ruler, which mainly comprises a base, a baffle, a detection device, a detection pen, a circular ball, a spring, a fixing ring, a painting brush and drawing paper, however, the device can only draw the flatness of a planar object, and cannot draw the flatness of curved objects such as a steel pipe.

Document CN208774367U is a strip steel shape measuring and shape curve drawing device, which mainly comprises a drawing plate, a base, a sliding guide, a drawing arm, a sliding block and a bolt, however, the device can only draw the flatness of flat objects such as strip steel, and cannot draw the flatness of curved objects such as steel tubes.

Document CN210790952U is a drawing device for workpiece baselines, which mainly comprises a square bottom plate, a circular seat plate, a pressure bearing, a round rod, a brace rod, a vertical shaft, a color bar and a baffle, however, the device can only draw the datum line of a steel pipe, is suitable for the installation place of pipe fitting processing pipelines, and cannot draw the flatness of curved objects such as the steel pipe.

SUMMERY OF THE UTILITY MODEL

In view of one or more of the problems in the prior art, the present invention provides an apparatus for drawing the straightness of a side surface of a steel pipe, comprising: the pen comprises four cushion blocks, a bottom plate, a top plate, two support plates, two rollers, four bearing supports, a first support, a second support, two pen caps, a pen cap, a pen refill, a round rod, a spring, a drawing, four magnets, four rolling bearings, a first wheel, four second wheels, a first hinge, four second hinges, twenty-four first screw rods, eight second screw rods, twenty-four first nuts and eight second nuts; wherein:

the cushion block is formed by connecting a first main body and four first bosses; the first main body and the first bosses are of a cuboid symmetrical structure, and the four first bosses are symmetrically arranged at the left end and the right end of the first main body; each first boss is provided with a cylindrical first through hole, a first screw rod penetrates through the first through hole at the lower end, one end of the first screw rod is screwed with the first nut, a second screw rod penetrates through the first through hole at the upper end, and one end of the second screw rod is screwed with the second nut;

the bottom plate is of a cuboid plate-shaped symmetrical structure; the bottom plate is symmetrically provided with four groups of eight cylindrical second through holes, the first screw rod penetrates through the second through holes, and one end of the first screw rod is screwed with the first nut; the bottom plate is also symmetrically provided with four groups of sixteen cylindrical third through holes, the first screw rod penetrates through the third through holes, and one end of the first screw rod is screwed with the first nut;

the top plate is of a cuboid plate-shaped symmetrical structure; the top plate is symmetrically provided with eight cylindrical through holes, four groups of eight through holes are formed in the top plate, the second screw rod penetrates through the eighth through holes, and one end of the second screw rod is screwed with the second nut; two cuboid-shaped third grooves are symmetrically formed in the upper surface of the top plate, and the second wheels are placed in the third grooves; the top plate is also provided with a cuboid-shaped ninth through hole, and the first support penetrates through the ninth through hole;

the support plate is formed by connecting a fourth main body and a fourth boss; the fourth main body and the fourth boss are both of a cuboid symmetrical structure, and the fourth boss is vertically arranged at the upper end of the fourth main body; the fourth main body is symmetrically provided with four cylindrical tenth through holes, the second screw rod penetrates through the tenth through holes, and one end of the second screw rod is screwed with the second nut;

the roller is formed by connecting roller heads at two ends with a roller body in the middle; the roller head is of a cylindrical symmetrical structure and is used for penetrating the rolling bearing; the roller body is of a cylindrical symmetrical structure, an annular roller groove is formed in the circumferential direction of the roller body, and a steel pipe penetrates through the roller groove;

the bearing support is formed by connecting a second main body and a second boss; the second main body and the second boss are both of a cuboid symmetrical structure, and the second boss is vertically arranged at the upper end of the second main body; the second boss is provided with a cylindrical first groove, and the rolling bearing is arranged in the first groove; a cylindrical fourth through hole is formed in the axis position of the first groove, and a roller head of the roller penetrates through the fourth through hole; the second main body is symmetrically provided with four cylindrical fifth through holes, the first screw rod penetrates through the fifth through holes, and one end of the first screw rod is screwed with the first nut;

the first bracket is formed by connecting a third main body and a third boss, the third main body and the third boss are of rectangular symmetrical structures, and the third boss is arranged at the lower end of the third main body; the third boss is provided with a first rectangular through groove, and the first wheel penetrates through the first through groove; a cylindrical sixth through hole is formed in each of two sides of the first through groove, and the first hinge penetrates through the sixth through hole; the third main body is provided with an eight-prism-shaped seventh through hole, and the pen cap penetrates through the seventh through hole; the upper surface of the third main body is provided with a cylindrical second groove, and the round rod penetrates through the second groove;

the second bracket is formed by connecting a fifth main body and four fifth bosses, the fifth main body and the fifth bosses are of cuboid symmetrical structures, and the four fifth bosses are symmetrically arranged at the front end and the rear end of the fifth main body; each fifth boss is provided with a second rectangular through groove, and the second wheel penetrates through the second through groove; a cylindrical twelfth through hole is formed in each of the two sides of each second through groove, and the second hinge penetrates through the twelfth through hole; a thirteenth through hole in a cuboid shape is formed in the upper surface of the fifth main body, and the first support penetrates through the thirteenth through hole;

the pen cap is of a cylindrical symmetrical structure; one end of the pen cap is provided with a screw hole, and the pen cap is screwed in the screw hole; the other end of the pen cap is provided with an eleventh conical through hole, and the pen core penetrates through the eleventh through hole;

the pen cap is of a regular octagonal prism-shaped symmetrical structure; the outer surfaces of the two ends of the pen cap are respectively provided with threads, and the pen cap is screwed at the threads; a fourteenth cylindrical through hole is formed in the side face of the pen cap, and the round rod penetrates through the fourteenth through hole and is used for positioning the spring; a fifteenth cylindrical through hole is formed in the axis position of the pen cap, and the pen core and the spring penetrate through the fifteenth through hole;

the pen core, the round bar, the spring, the drawing, the magnet, the rolling bearing, the first wheel, the second wheel, the first hinge, the second hinge, the first screw rod, the second screw rod, the first nut and the second nut are standard parts.

The device for drawing the steel pipe side flatness provided by the technical scheme comprises four cushion blocks, a bottom plate, a top plate, two support plates, two rollers, four bearing supports, a first support, a second support, two pen caps, a pen cap, a pen refill, a round bar, a spring, a drawing, four magnets, four rolling bearings, a first wheel, four second wheels, a first hinge, four second hinges, twenty-four first screw rods, eight second screw rods, twenty-four first nuts and eight second nuts.

When the device is used, the device is arranged in front of a conveying roller way, the steel pipe is ensured to be aligned with a roller groove of a roller, and a second support vehicle is pushed to the front end of the device along two third grooves of a top plate; the two rollers are rotated to feed the steel pipe into the roller grooves of the two rollers, when the steel pipe contacts the first support trolley, the two rollers are stopped rotating, the first wheel arranged on the first support is arranged on the steel pipe, the second support trolley is pushed to the rear end of the device along the two third grooves of the top plate, and when the first support trolley leaves the steel pipe, the second support trolley is stopped pushing, so that the operation of the device is relatively simple.

In the device, the combined use of the second bracket, the second wheel and the top plate can realize that the second bracket moves according to a preset track; the bottom plate, the cushion block, the top plate, the second support trolley and the first support trolley are used in a combined mode, so that the first wheel can be perfectly rolled along with the surface of the steel pipe; the combination use of the bottom plate, the bearing support, the rolling bearing and the roller can realize that the steel pipe moves according to a preset track; the support plate, the magnet, the drawing, the pen core, the pen cap, the spring and the round bar are used in a combined mode, and therefore accurate drawing of straightness can be achieved; therefore, the drawing effect of the device is relatively good.

The device for drawing the steel pipe side surface straightness can quickly and effectively draw the steel pipe side surface straightness curve, and has the characteristics of low manufacturing cost, simplicity in operation and good drawing effect.

Drawings

FIG. 1 is a schematic structural diagram of a front view of the device for drawing the straightness of the side surface of the steel pipe provided by the utility model;

FIG. 2 is a left side view structural diagram of the device for drawing the steel pipe side flatness provided by the present invention;

FIG. 3 is a schematic top view of the apparatus for drawing the flatness of the side surface of the steel pipe according to the present invention;

FIG. 4 is a schematic top view of the base plate, bearing support, rolls and steel tube of the present invention after assembly;

FIG. 5 is a schematic front view of a spacer according to the present invention;

FIG. 6 is a schematic top view of a spacer according to the present invention;

FIG. 7 is a schematic top view of the base plate according to the present invention;

FIG. 8 is a schematic front view of a roll according to the present invention;

FIG. 9 is a schematic left-side view of a bearing support according to the present invention;

FIG. 10 is a schematic top view of a bearing support according to the present invention;

fig. 11 is a front view of a first bracket according to the present invention;

FIG. 12 is a left side view of the first bracket of the present invention;

FIG. 13 is a schematic top view of a first bracket according to the present invention;

FIG. 14 is a schematic top view of the top plate according to the present invention;

FIG. 15 is a schematic front view of a plate according to the present invention;

FIG. 16 is a schematic top view of a plate according to the present invention;

FIG. 17 is a left side view of the pen cap according to the present invention;

FIG. 18 is a schematic diagram of a right-view structure of a pen cap according to the present invention;

FIG. 19 is a front view of the second bracket and second wheel assembly of the present invention;

FIG. 20 is a left side elevational view of the second bracket and second wheel assembly of the present invention;

FIG. 21 is a schematic top view of the second bracket and second wheel assembly of the present invention;

FIG. 22 is a schematic front view of a round bar according to the present invention;

FIG. 23 is a schematic top view of a pen cap according to the present invention;

FIG. 24 is a left side view of the pen cap according to the present invention;

FIG. 25 is a schematic top view of the cap, cartridge, spring, cap and cap of the present invention prior to assembly;

description of reference numerals: a 1-first screw; b 1-second screw; 2-cushion block; 201-a first body; 202-a first boss; 203-a first via; 3-a bottom plate; 301-a second via; 302-a third via; 4-rolling; 401-roller groove; 402-a roll body; 403-roll head; 5-a steel pipe; a6 — first nut; b 6-second nut; 7-a bearing support; 701-a second body; 702-a second boss; 703-a fourth via; 704 — a first groove; 705-fifth via; 8-a first scaffold; 801-a third boss; 802-a first through slot; 803-a third body; 804-a sixth via; 805-a seventh via; 806-a second groove; 9-a top plate; 901-all eight vias; 902-a third groove; 903-ninth via; 10-a support plate; 1001-fourth body; 1002-a fourth boss; 1003-tenth via; 11-a pen cap; 1101-an eleventh via; 1102-screw holes; 12-a second scaffold; 1201-a second through slot; 1202-a fifth body; 1203-a fifth boss; 1204-a twelfth through hole; 1205-thirteenth via; 13-round bar; 14-a pen cap; 1401-a thread; 1402-a fourteenth via; 1403-fifteenth via; 15-rolling bearings; a16 — first round; b16 — second round; a 17-first hinge; b 17-second hinge; 18-a cartridge; 19-drawing paper; 20-a magnet; 21-spring.

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 4, the device for drawing the steel pipe side flatness provided by the present invention is composed of four cushion blocks 2, a bottom plate 3, a top plate 9, two support plates 10, two rollers 4, four bearing holders 7, a first support 8, a second support 12, two caps 11, a pen cap 14, a pen core 18, a round bar 13, a spring 21, a drawing 19, four magnets 20, four rolling bearings 15, a first wheel a16, four second wheels b16, a first hinge a17, four second hinges b17, twenty-four first screws a1, eight second screws b1, twenty-four first nuts a6, and eight second nuts b 6.

As shown in fig. 5 and 6, the cushion block 2 is formed by connecting a first main body 201 and four first bosses 202; the first main body 201 and the first bosses 202 are both of a cuboid-shaped symmetrical structure, and the four first bosses 202 are symmetrically arranged at the left end and the right end of the first main body 201; each first boss 202 is provided with a cylindrical first through hole 203, the first screw a1 is arranged in the first through hole 203 at the lower end, one end of the first screw a1 can be screwed with the first nut a6, the second screw b1 is arranged in the first through hole 203 at the upper end, and one end of the second screw b1 can be screwed with the second nut b 6.

As shown in fig. 7, the bottom plate 3 is a rectangular plate-shaped symmetrical structure; four groups of eight cylindrical second through holes 301 are symmetrically formed in the bottom plate 3, the first screw a1 penetrates through the second through holes 301, and one end of the first screw a1 can be screwed with the first nut a 6; the bottom plate 3 is further symmetrically provided with four groups of sixteen cylindrical third through holes 302, the first screw a1 penetrates through the third through holes 302, and one end of the first screw a1 can be screwed with the first nut a 6.

As shown in fig. 14, the top plate 9 has a symmetric structure of a rectangular parallelepiped plate shape; the top plate 9 is symmetrically provided with four groups of eight cylindrical through holes 901, the second screw b1 penetrates through the eight through holes 901, and one end of the second screw b1 is screwed with the second nut b 6; two cuboid-shaped third grooves 902 are symmetrically formed in the upper surface of the top plate 9, and the second wheels b16 are placed in the third grooves 902; the top plate 9 is further provided with a ninth through hole 903 in a rectangular parallelepiped shape, and the first bracket 8 is inserted into the ninth through hole 903.

As shown in fig. 15 and 16, the plate 10 is formed by connecting a fourth main body 1001 and a fourth boss 1002; the fourth main body 1001 and the fourth boss 1002 are both rectangular parallelepiped symmetrical structures, and the fourth boss 1002 is vertically arranged at the upper end of the fourth main body 1001; the fourth body 1001 is symmetrically provided with four cylindrical tenth through holes 1003, the second screw b1 penetrates through the tenth through holes 1003, and one end of the second screw b1 can be screwed with the second nut b 6.

As shown in fig. 8, the roll 4 is formed by connecting roll heads 403 at two ends and a roll body 402 in the middle; the roller head 403 is a cylindrical symmetrical structure and is used for penetrating the rolling bearing 15; the roller body 402 is of a cylindrical symmetrical structure, an annular roller groove 401 is formed in the circumferential direction of the roller body 402, and the steel pipe 5 penetrates through the roller groove 401.

As shown in fig. 9 and 10, the bearing support 7 is formed by connecting a second main body 701 and a second boss 702; the second main body 701 and the second boss 702 are both of a rectangular parallelepiped symmetrical structure, and the second boss 702 is vertically arranged at the upper end of the second main body 701; the second boss 702 is provided with a cylindrical first groove 704, and the rolling bearing 15 is installed in the first groove 704; a cylindrical fourth through hole 703 is formed in the axis position of the first groove 704, and a roller head 403 of the roller 4 penetrates through the fourth through hole 703; the second body 701 is symmetrically provided with four cylindrical fifth through holes 705, the first screw a1 penetrates through the fifth through holes 705, and one end of the first screw a1 can be screwed with the first nut a 6.

As shown in fig. 11 to 13, the first bracket 8 is formed by connecting a third main body 803 and a third boss 801, the third main body 803 and the third boss 801 are both of a rectangular parallelepiped symmetrical structure, and the third boss 801 is disposed at the lower end of the third main body 803; the third boss 801 is provided with a first rectangular through groove 802, and the first wheel a16 penetrates through the first through groove 802; a cylindrical sixth through hole 804 is formed in each of two sides of the first through groove 802, and the first hinge a17 penetrates through the sixth through hole 804; the third body 803 is provided with an eight-square-prism-shaped seventh through hole 805, and the pen cap 14 is inserted into the seventh through hole 805; the upper surface of the third body 803 is formed with a cylindrical second groove 806, and the round rod 13 is inserted into the second groove 806, as shown in fig. 22.

As shown in fig. 19 to 21, the second bracket 12 is formed by connecting a fifth main body 1202 and four fifth bosses 1203, the fifth main body 1202 and the fifth bosses 1203 are both rectangular symmetrical structures, and the four fifth bosses 1203 are symmetrically disposed at the front end and the rear end of the fifth main body 1202; each fifth boss 1203 is provided with a second rectangular through groove 1201, and the second wheel b16 penetrates through the second through groove 1201; a cylindrical twelfth through hole 1204 is formed in each of the two sides of each second through groove 1201, and the second hinge b17 penetrates through the twelfth through hole 1204; a thirteenth through hole 1205 in a rectangular parallelepiped shape is formed in the upper surface of the fifth main body 1202, and the first bracket 8 is inserted into the thirteenth through hole 1205.

As shown in fig. 17 and 18, the cap 11 has a cylindrical symmetrical structure; one end of the pen cap 11 is provided with a screw hole 1102, and the pen cap 14 is screwed in the screw hole 1102; the other end of the cap 11 is provided with an eleventh through hole 1101 in a conical shape, and the refill 18 is inserted into the eleventh through hole 1101.

As shown in fig. 23-25, the pen cap 14 has a regular octagonal symmetrical structure; the outer surfaces of the two ends of the pen cap 14 are respectively provided with a thread 1401, and the pen cap 11 is screwed at the thread 1401; a fourteenth cylindrical through hole 1402 is formed in the side surface of the pen cap 14, and the round rod 13 is inserted into the fourteenth through hole 1402 and used for positioning the spring 21; a fifteenth cylindrical through hole 1403 is formed in the axial position of the pen cap 14, and the pen core 18 and the spring 21 penetrate through the fifteenth through hole 1403.

The assembly process of the device for drawing the steel pipe side surface flatness provided by the utility model comprises the following steps:

as shown in fig. 1 to 25, first, a first wheel a16 is inserted into a first through slot 802 of the first support 8 to ensure that an axial hole of the first wheel a16 is aligned with a sixth through hole 804 of the first support 8, and then a first hinge a17 is installed in the aligned through holes, so that the first support 8 and the first wheel a16 can be assembled into a first support vehicle;

then, a second wheel b16 is respectively arranged in the four second through grooves 1201 of the second bracket 12 in a penetrating way, so that the axle center holes of the four second wheels b16 are aligned with the four twelfth through holes 1204 of the second bracket 12, and then a second hinge b17 is respectively arranged in the through holes in the four pairs, so that the second bracket 12 and the four second wheels b16 can be assembled into a second bracket vehicle;

then, the bottom plate 3 is arranged on an installation table, then, one rolling bearing 15 is respectively installed in four first grooves 704 of four bearing supports 7, then, the four bearing supports 7 are arranged on the bottom plate 3, it is ensured that the four first grooves 704 of the four bearing supports 7 are arranged in pairs, then, four roller heads 403 of two rollers 4 are respectively arranged in the four rolling bearings 15 which are arranged in pairs, it is ensured that sixteen fifth through holes 705 of the four bearing supports 7 are aligned with sixteen third through holes 302 of the bottom plate 3, then, one first screw rod a1 is respectively arranged in the through holes of sixteen groups of alignment, and then, one first nut a6 is respectively screwed on the other end of sixteen first screw rods a1, thus, the four bearing supports 7, the four rolling bearings 15, the four rolling bearings, The two rollers 4 and the bottom plate 3 are assembled;

then, four cushion blocks 2 are arranged on the bottom plate 3, eight first through holes 203 with the four cushion blocks 2 positioned at the lower positions are ensured to be aligned with eight second through holes 301 of the bottom plate 3, then one first screw a1 is respectively arranged in the eight aligned through holes in a penetrating manner, and then one first nut a6 is respectively screwed on the other ends of the eight first screws a1, so that the four cushion blocks 2 and the bottom plate 3 can be assembled;

then, the top plate 9 is arranged on the four cushion blocks 2, then the two support plates 10 are arranged on the top plate 9, eight tenth through holes 1003 of the two support plates 10, eight eighth through holes 901 of the top plate 9 are aligned with the eight first through holes 203 of the four cushion blocks 2, then one second screw b1 is respectively arranged in the eight aligned through holes in a penetrating manner, and then one second nut b6 is respectively screwed on the other ends of the eight second screws b1, so that the two support plates 10, the top plate 9 and the four cushion blocks 2 can be assembled;

then, the first support cart is inserted into a thirteenth through hole 1205 of the second support 12 from bottom to top, then the pen cap 14 is inserted into a seventh through hole 805 of the first support 8, so as to ensure that a fourteenth through hole 1402 of the pen cap 14 is aligned with the second groove 806 of the first support 8, then the round rod 13 is inserted into the second groove 806 of the first support 8, then the second support cart is arranged on the top plate 9, so as to ensure that the four second wheels b16 can roll into the two third grooves 902 of the top plate 9, and thus, the first support cart, the pen cap 14 and the second support cart can be assembled;

then the spring 21 and the pen core 18 are sequentially arranged in a fifteenth through hole 1403 on one side of the pen cap 14 in a penetrating way, then the two pen caps 11 are screwed on threads 1401 at two ends of the pen cap 14 through screw holes 1102 to ensure that the head of the pen core 18 can penetrate out of an eleventh through hole 1101 of the pen cap 11, then one piece of drawing paper 19 is laid on a fourth boss 1002 of the support plate 10 on one side of the pen core 18, and then four pieces of magnets 20 are arranged on four corners of the drawing paper 19, so that the whole device is assembled and can be put into use.

The working principle of the device for drawing the steel pipe side surface flatness provided by the utility model is as follows:

since the first carriage passes through the thirteenth through hole 1205 of the second carriage 12 from bottom to top and contacts with the side surface of the steel tube 5 through one of the first wheels a16, the first carriage can rely on its own gravity to realize that the first wheel a16 can always keep a tangent relation with the side surface of the steel tube 5 no matter whether the side surface of the steel tube 5 has a pit or protrusion defect, so that the side surface flatness curve of the steel tube 5 can be drawn on the drawing 19 through the pen core 18.

The device for drawing the steel pipe side flatness provided by the utility model is used in the following process:

as shown in fig. 1-4, the assembled device for drawing the steel pipe side flatness of the present invention is firstly disposed in front of the transportation roller way, so as to ensure that the two rollers 4 are aligned with the transportation roller way, so as to ensure that the steel pipe 5 is aligned with the roller grooves 401 of the rollers 4, and then the second carriage is pushed forward along the two third grooves 902 of the top plate 9 at a constant speed, so as to move the second carriage to the front end of the device;

then, rotating the two rollers 4 at a constant speed, feeding the steel pipe 5 into the roller grooves 401 of the two rollers 4, stopping rotating the two rollers 4 when the steel pipe 5 contacts the first carriage, then arranging the first wheel a16 on the steel pipe 5, and then pushing the second carriage at a constant speed backwards along the two third grooves 902 of the top plate 9, so that the second carriage can be moved to the rear end of the device, and stopping pushing the second carriage when the first wheel a16 leaves the steel pipe 5;

in this process, the first wheel a16 can roll from the front end of the steel tube 5 to the rear end of the steel tube 5 at a constant speed, and the first carriage can realize that the first wheel a16 can always keep a tangent relation with the side surface of the steel tube 5 by means of the gravity of the first carriage, so that the curve of the side surface straightness of the steel tube 5 can be drawn on the drawing 19 through the pen core 18.

Supplementary explanation: the device for drawing the steel pipe side flatness provided by the utility model is designed by adopting a symmetrical structure, and the spring 21 is slightly compressed in advance, namely, a compression force is exerted on the spring 21 in advance, so that the pen core 18 can be ensured to contact the drawing 19 by virtue of the elastic acting force of the spring 21 and can be drawn freely on the drawing 19.

According to the embodiment, the device for drawing the steel pipe side flatness provided by the utility model can be used for quickly drawing the side flatness curve of the steel pipe so as to be convenient for storing data, and has the characteristics of low manufacturing cost, simplicity in operation and good drawing effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1. The utility model provides a draw device of steel pipe side straightness, its characterized in that, draw device of steel pipe side straightness includes: the pen comprises four cushion blocks (2), a bottom plate (3), a top plate (9), two support plates (10), two rollers (4), four bearing supports (7), a first support (8), a second support (12), two pen caps (11), a pen cap (14), a pen core (18), a round rod (13), a spring (21), a drawing (19), four magnets (20), four rolling bearings (15), a first wheel (a16), four second wheels (b16), a first hinge (a17), four second hinges (b17), twenty-four first screw rods (a1), eight second screw rods (b1), twenty-four first nuts (a6) and eight second nuts (b 6); wherein:

the cushion block (2) is formed by connecting a first main body (201) and four first bosses (202); the first main body (201) and the first bosses (202) are of a cuboid-shaped symmetrical structure, and the four first bosses (202) are symmetrically arranged at the left end and the right end of the first main body (201); each first boss (202) is provided with a cylindrical first through hole (203), a first screw (a1) penetrates through the first through hole at the lower end, one end of the first screw (a1) is screwed with the first nut (a6), a second screw (b1) penetrates through the first through hole at the upper end, and one end of the second screw (b1) is screwed with the second nut (b 6);

the bottom plate (3) is of a cuboid plate-shaped symmetrical structure; four groups of eight cylindrical second through holes (301) are symmetrically formed in the bottom plate (3), the first screw (a1) penetrates through the second through holes (301), and one end of the first screw (a1) is screwed with the first nut (a 6); the bottom plate (3) is also symmetrically provided with four groups of sixteen cylindrical third through holes (302), the first screw (a1) penetrates through the third through holes (302), and one end of the first screw (a1) is screwed with the first nut (a 6);

the top plate (9) is of a cuboid plate-shaped symmetrical structure; the top plate (9) is symmetrically provided with eight cylindrical through holes (901), four groups of eight through holes (901) are formed, the second screw (b1) penetrates through the eighth through holes (901), and one end of the second screw (b1) is screwed with the second nut (b 6); two cuboid-shaped third grooves (902) are symmetrically formed in the upper surface of the top plate (9), and the second wheels (b16) are placed in the third grooves (902); the top plate (9) is also provided with a cuboid-shaped ninth through hole (903), and the first support (8) penetrates through the ninth through hole (903);

the support plate (10) is formed by connecting a fourth main body (1001) and a fourth boss (1002); the fourth main body (1001) and the fourth boss (1002) are both of a cuboid-shaped symmetrical structure, and the fourth boss (1002) is vertically arranged at the upper end of the fourth main body (1001); the fourth main body (1001) is symmetrically provided with four cylindrical tenth through holes (1003), the second screw (b1) penetrates through the tenth through holes (1003), and one end of the second screw (b1) is screwed with the second nut (b 6);

the roller (4) is formed by connecting roller heads (403) at two ends with a roller body (402) in the middle; the roller head (403) is of a cylindrical symmetrical structure and is used for penetrating the rolling bearing (15); the roller body (402) is of a cylindrical symmetrical structure, an annular roller groove (401) is formed in the circumferential direction of the roller body (402), and a steel pipe penetrates through the roller groove (401);

the bearing support (7) is formed by connecting a second main body (701) and a second boss (702); the second main body (701) and the second boss (702) are both of a cuboid-shaped symmetrical structure, and the second boss (702) is vertically arranged at the upper end of the second main body (701); the second boss (702) is provided with a cylindrical first groove (704), and the rolling bearing (15) is arranged in the first groove (704); a cylindrical fourth through hole (703) is formed in the axis position of the first groove (704), and a roller head (403) of the roller (4) penetrates through the fourth through hole (703); the second main body (701) is symmetrically provided with four cylindrical fifth through holes (705), the first screw (a1) penetrates through the fifth through holes (705), and one end of the first screw (a1) is screwed with the first nut (a 6);

the first bracket (8) is formed by connecting a third main body (803) and a third boss (801), the third main body (803) and the third boss (801) are both in a cuboid-shaped symmetrical structure, and the third boss (801) is arranged at the lower end of the third main body (803); the third boss (801) is provided with a first rectangular through groove (802), and the first wheel (a16) penetrates through the first through groove (802); both sides of the first through groove (802) are provided with a cylindrical sixth through hole (804), and the first hinge (a17) penetrates through the sixth through hole (804); the third main body (803) is provided with an eight-prism-shaped seventh through hole (805), and the pen cap (14) is arranged in the seventh through hole (805) in a penetrating manner; the upper surface of the third main body (803) is provided with a cylindrical second groove (806), and the round rod (13) penetrates through the second groove (806);

the second support (12) is formed by connecting a fifth main body (1202) and four fifth bosses (1203), the fifth main body (1202) and the fifth bosses (1203) are both of a cuboid-shaped symmetrical structure, and the four fifth bosses (1203) are symmetrically arranged at the front end and the rear end of the fifth main body (1202); each fifth boss (1203) is provided with a second rectangular through groove (1201), and the second wheel (b16) penetrates through the second through groove (1201); a cylindrical twelfth through hole (1204) is formed in each second through groove (1201) at two sides, and the second hinge (b17) penetrates through the twelfth through hole (1204); a thirteenth through hole (1205) in a cuboid shape is formed in the upper surface of the fifth main body (1202), and the first support (8) penetrates through the thirteenth through hole (1205);

the pen cap (11) is of a cylindrical symmetrical structure; one end of the pen cap (11) is provided with a screw hole (1102), and the pen cap (14) is screwed in the screw hole (1102); the other end of the pen cap (11) is provided with a conical eleventh through hole (1101), and the pen core (18) penetrates through the eleventh through hole (1101);

the pen cap (14) is of a regular octagonal prism-shaped symmetrical structure; the outer surfaces of two ends of the pen cap (14) are respectively provided with a thread (1401), and the pen cap (11) is screwed at the thread (1401); a fourteenth cylindrical through hole (1402) is formed in the side face of the pen cap (14), and the round rod (13) penetrates through the fourteenth through hole (1402) and is used for positioning the spring (21); a fifteenth cylindrical through hole (1403) is formed in the axis position of the pen cap (14), and the pen core (18) and the spring (21) penetrate through the fifteenth through hole (1403);

the pen core (18), the round rod (13), the spring (21), the drawing paper (19), the magnet (20), the rolling bearing (15), the first wheel (a16), the second wheel (b16), the first hinge (a17), the second hinge (b17), the first screw rod (a1), the second screw rod (b1), the first nut (a6) and the second nut (b6) are all standard parts.

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