CN218916198U - Device based on steel pipe terminal surface roughness is measured to opposition formula - Google Patents

Abstract

The utility model discloses a device for measuring flatness of an end face of a steel pipe based on opposite type, and belongs to the technical field of machinery. The device for measuring the flatness of the end face of the steel pipe comprises two first supports, two second supports, a bottom plate, two support plates, twenty-four measuring rods, eight screws, a rotating shaft, a cushion block, sixteen wheels, sixteen first hinges, two second hinges, two rolling bearings, eight screws and eight nuts.

Description

Device based on steel pipe terminal surface roughness is measured to opposition formula

Technical Field

The utility model belongs to the technical field of machinery, and particularly relates to a device for measuring flatness of an end face of a steel pipe based on opposite arrangement.

Background

At present, in the application field of seamless steel pipes, end connection is sometimes required, and as the flatness of the end surface of the steel pipe directly influences the connection strength of the steel pipe and further influences the sealing performance after the connection of the steel pipe, the measurement technology for the flatness of the end surface of the steel pipe is widely focused and studied by related people in the industry; the measurement accuracy of the device directly affects the reliability of product detection, and therefore, most enterprises design the device relatively complex, so that the measurement accuracy of the device can be improved to a certain extent, but the device also has two defects; on the one hand, the manufacturing costs of the device are increased and, on the other hand, the operating process of the device is prolonged.

Disclosure of Invention

The utility model provides a device for measuring the flatness of the end face of a steel pipe based on opposite type, which comprises two first brackets, two second brackets, a bottom plate, two support plates, twenty-four measuring rods, eight screws, a rotating shaft, a cushion block, sixteen wheels, sixteen first hinges, two second hinges, two rolling bearings, eight screws and eight nuts; wherein:

the first bracket is formed by connecting a first body, two first bosses and a second boss, wherein the first body, the first bosses and the second bosses are of cuboid symmetrical structures, the two first bosses are positioned on the upper end surfaces of the first body at the same time, and the second bosses are positioned on the upper end surfaces of the two first bosses; a cylindrical first groove is formed in the center of the second boss, and the rolling bearing is arranged in the first groove in a penetrating manner; the axial position of the first groove is provided with a cylindrical first through hole, and a bearing section of the rotating shaft is arranged in the first through hole in a penetrating manner; four cylindrical second through holes are symmetrically formed in the first body, the screw rod penetrates through the second through holes, and the nut is screwed at the threaded end of the screw rod;

the second bracket is formed by connecting a third body, a fourth boss, twelve fifth bosses and a sixth boss, wherein the third body and the sixth boss are of cuboid symmetrical structures, the sixth boss is positioned on the upper end face of the third body, the fourth boss and the fifth boss are of cylindrical symmetrical structures, the fourth boss is positioned on the left end face of the third body, and the twelve fifth bosses are uniformly positioned on the right end face of the third body along the circumferential direction; two cuboid second through grooves are respectively formed in the left end face and the right end face of the sixth boss, and the wheels are arranged in the second through grooves in a penetrating mode; two cylindrical fourth through holes are respectively formed in two sides of the second through groove, and the first hinges penetrate through the fourth through holes; a third cuboid-shaped tee slot is formed in the left end face and the right end face of the sixth boss respectively so as to facilitate the installation of the first hinge; fifty division scales are uniformly marked on the side surface of the fifth boss along the circumferential direction, a first screw hole is formed in the axis position of the fifth boss, the measuring rod is screwed into the first screw hole, and the first screw hole penetrates through the third body and the fourth boss at the same time;

the bottom plate is of a cuboid symmetrical structure, two groups of eight cylindrical third through holes are symmetrically formed in the left end and the right end of the bottom plate, the screw rod penetrates through the third through holes, and the threaded end of the screw rod is screwed with the nut;

the support plate is of a cuboid symmetrical structure, four cylindrical sixth through holes are symmetrically formed in the support plate, and the screws penetrate through the sixth through holes; a seventh through hole in the shape of a regular octagon is formed in the center of the support plate, and the rotating shaft is arranged in the seventh through hole in a penetrating manner; two groups of four cuboid-shaped second grooves are symmetrically formed in the left end face of the support plate and used for guiding the wheels;

the measuring rod is formed by connecting three parts of a contact section, a thread section and a scale section, wherein the contact section is of a hemispheroidal symmetrical structure and is used for contacting the end face of the steel pipe; the thread section is of a cylindrical symmetrical structure with threads arranged on the side surface and is used for screwing the first screw hole of the second bracket, and the pitch value of the threads is 0.5mm; the scale sections are of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, each group of scales consists of two adjacent upper and lower rows of staggered scales, the staggered value of the two rows of staggered scales is 0.5mm, and the minimum division value of the staggered scales is 1mm;

the screw is formed by connecting a second body and a third boss which are coaxial, the second body and the third boss are both in cylindrical symmetrical structures, and the third boss is positioned on the right end face of the second body; the end part of the third boss is provided with threads for screwing the second screw hole of the cushion block; a first cuboid through groove is formed in the left end face of the second body so as to facilitate screwing of the screw;

the rotating shaft is formed by connecting bearing sections at two ends and a clamping section in the middle; the bearing section is of a cylindrical symmetrical structure and is used for penetrating the rolling bearing; the clamping section is of a regular octagon symmetrical structure and is used for penetrating through a seventh through hole of the support plate and an eighth through hole of the cushion block; the clamping section is symmetrically provided with two cylindrical fifth through holes, and the second hinges are penetrated in the fifth through holes;

the cushion block is of a cuboid symmetrical structure, a regular octagon eighth through hole is formed in the center of the cushion block, and the rotating shaft penetrates through the eighth through hole; four second screw holes are symmetrically formed in the cushion block, and the screws are screwed into the second screw holes;

the rolling bearing, the wheel, the first hinge, the second hinge, the screw and the nut are all standard components;

one cushion block is penetrated between two opposite support plates and connected through eight screws; one rotating shaft is arranged in the seventh through holes of the two support plates and the eighth through holes of the cushion blocks in a penetrating manner, two bearing sections of the rotating shaft are arranged in the two rolling bearings in a penetrating manner, and the two rolling bearings are arranged in the two first grooves of the two first brackets; the two first brackets are oppositely arranged on the bottom plate and are connected with the eight nuts through eight screws; sixteen wheels are rolled in the eight second grooves of the two support plates, penetrate through the eight second through grooves of the two second supports which are oppositely arranged, and are hinged through sixteen first hinges; twenty-four measuring rods are screwed into twenty-four first screw holes of the two second brackets.

The device based on the opposite type measuring of the flatness of the end face of the steel pipe provided by the technical scheme comprises two first brackets, two second brackets, a bottom plate, two support plates, twenty-four measuring rods, eight screws, a rotating shaft, a cushion block, sixteen wheels, sixteen first hinges, two second hinges, two rolling bearings, eight screws and eight nuts, and the device is common in material and convenient to machine and shape, so that the manufacturing cost of the device is relatively low.

When the device is used, the device is arranged in front of the conveying roller way, the centering conveying roller way is ensured, twenty-four measuring rods are all rotated to the zero-scale position, the two support plates are turned to be horizontally arranged by the rotary shaft, the steel pipe is conveyed to the position convenient for the measuring rods to measure, the two support plates are turned to be vertically arranged by the rotary shaft, the twelve measuring rods with lower positions are screwed in respectively, twelve contact sections are contacted with the end face of the steel pipe, at the moment, the twelve contact sections are in tangential relation with the end face of the steel pipe, the screwing-in distance delta n of the twelve measuring rods is respectively read, the minimum value of the distances is found, and the difference is calculated, so that the device is relatively simple to operate.

The device adopts a symmetrical structure for design, and the joint use of the bottom plate, the first bracket and the rolling bearing can realize the rotation of the rotating shaft according to a preset track; the joint use of the rotating shaft, the cushion block and the screw can realize the rotation of the support plate according to a preset track; the combined use of the support plate and the cushion block can realize that the second bracket vehicle moves according to a preset track; twenty-four scale sections of twenty-four measuring rods and twenty-four fifth bosses of two second brackets are combined to form twenty-four spiral micrometers, so that flatness of twelve parts of the end face of the steel pipe can be rapidly measured and calculated along the circumferential direction, and therefore, the measuring precision of the device is relatively high.

The device for measuring the flatness of the end face of the steel pipe based on the opposite type can achieve the purpose of rapidly measuring and calculating the flatness of twelve parts of the end face of the steel pipe along the circumferential direction, and has the characteristics of low manufacturing cost, simplicity in operation and high measurement precision.

Drawings

FIG. 1 is a schematic diagram of a front view structure of a device for measuring flatness of an end surface of a steel pipe based on opposite arrangement in a standing manner of a support plate;

FIG. 2 is a schematic diagram of a right-side view structure of the device for measuring flatness of an end surface of a steel pipe based on opposite arrangement in a standing manner;

FIG. 3 is a schematic top view of the device for measuring flatness of end surfaces of steel pipes based on opposite arrangement of the present utility model when a support plate is arranged vertically;

FIG. 4 is a schematic diagram of a front view structure of the device for measuring flatness of an end surface of a steel pipe based on opposite arrangement when a support plate is horizontally arranged;

FIG. 5 is a schematic diagram of a right-side view structure of the device for measuring flatness of an end surface of a steel pipe based on opposite arrangement in a horizontal arrangement of a support plate;

FIG. 6 is a schematic front view of the first bracket of the present utility model;

FIG. 7 is a schematic left-hand view of the first bracket of the present utility model;

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

FIG. 9 is a schematic top view of the base plate of the present utility model;

FIG. 10 is a schematic diagram of the front view of the measuring stick of the present utility model;

FIG. 11 is a schematic view of the front view of the screw of the present utility model;

figure 12 is a schematic diagram of the front view of the second bracket and wheel assembly of the present utility model;

figure 13 is a schematic view of the left side view of the second bracket and wheel assembly of the present utility model;

figure 14 is a schematic right-hand view of the second bracket and wheel assembly of the present utility model;

figure 15 is a schematic top view of the second bracket and wheel assembly of the present utility model;

FIG. 16 is a schematic top view of the spindle of the present utility model;

FIG. 17 is a schematic view of a left-hand construction of the support plate of the present utility model;

FIG. 18 is a schematic diagram of a left-hand structure of a pad of the present utility model;

FIG. 19 is a schematic view of the working principle of the device for measuring the flatness of the end surface of a steel pipe based on opposite arrangement of the utility model before measurement;

FIG. 20 is a schematic diagram of the working principle of the device for measuring the flatness of the end surface of a steel pipe based on opposite arrangement in the utility model;

fig. 21 is a schematic coding diagram of twelve measuring rods based on the opposite type device for measuring the flatness of the end face of the steel pipe.

Reference numerals illustrate: 1-a first bracket; 101-a first body; 102-a first boss; 103-a second boss; 104-a first groove; 105-a first via; 106-a second through hole; 2-a bottom plate; 201-a third via; 3-measuring rod; 301-contact section; 302-thread segments; 303-scale segments; 4-screws; 401-a second body; 402-a third boss; 403-a first through slot; 5-a second bracket; 501-a third body; 502-fourth boss; 503-fifth boss; 504-sixth bosses; 505-fourth through holes; 506-a first screw hole; 507-a second through slot; 508-third through slots; 6-rotating shaft; 601-a bearing section; 602-clamping sections; 603-fifth through holes; 7-supporting plates; 701-a second groove; 702-sixth through holes; 703-seventh through holes; 8-cushion blocks; 801-a second screw hole; 802-eighth via; a9-a first hinge; b9-a second hinge; 10-wheels; 11-rolling bearings; 12-screw; 13-a nut; 14-steel pipe.

Detailed Description

The following describes the utility model in detail by way of examples and figures, which are provided solely for the understanding of the utility model and are not intended to limit the utility model.

Example 1: device based on steel pipe terminal surface roughness is measured to opposition formula

Referring to fig. 1 to 5, the present utility model provides a device for measuring flatness of an end surface of a steel pipe based on opposite type, which comprises two first brackets 1, two second brackets 5, a bottom plate 2, two support plates 7, twenty-four measuring rods 3, eight screws 4, a rotating shaft 6, a cushion block 8, sixteen wheels 10, sixteen first hinges a9, two second hinges b9, two rolling bearings 11, eight screws 12 and eight nuts 13.

One cushion block 8 is penetrated between two opposite support plates 7 and connected through eight screws 4; one rotating shaft 6 is arranged in the two seventh through holes 703 of the two support plates 7 and the eighth through hole 802 of the cushion block 8 in a penetrating way, two bearing sections 601 of the rotating shaft 6 are arranged in the two rolling bearings 11 in a penetrating way, and the two rolling bearings 11 are arranged in the two first grooves 104 of the two first brackets 1; the two first brackets 1 are oppositely arranged on the bottom plate 2 and are connected through eight screw rods 12 and eight nuts 13; sixteen wheels 10 roll in the eight second grooves 701 of the two support plates 7, sixteen wheels 10 penetrate through the eight second through grooves 507 of the two second brackets 5 which are oppositely arranged, and are hinged through sixteen first hinges a9; twenty-four measuring rods 3 are screwed into twenty-four first screw holes 506 of the two second brackets 5.

Referring to fig. 6 to fig. 8, the first bracket 1 is formed by connecting a first body 101, two first bosses 102 and a second boss 103, wherein the first body 101, the first bosses 102 and the second bosses 103 are all rectangular symmetrical structures, the two first bosses 102 are located at the upper end surfaces of the first body 101 at the same time, and the second bosses 103 are located at the upper end surfaces of the two first bosses 102; a cylindrical first groove 104 is formed in the center of the second boss 103, and the rolling bearing 11 is arranged in the first groove 104 in a penetrating manner; a cylindrical first through hole 105 is formed in the axial position of the first groove 104, and a bearing section 601 of the rotating shaft 6 is arranged in the first through hole 105 in a penetrating manner; four cylindrical second through holes 106 are symmetrically formed in the first body 101, the screw 12 is arranged in the second through holes 106 in a penetrating mode, and the nut 13 is screwed at the threaded end of the screw 12.

As shown in fig. 12 to 15, the second bracket 5 is formed by connecting a third body 501, a fourth boss 502, twelve fifth bosses 503 and a sixth boss 504, wherein the third body 501 and the sixth boss 504 are both in a rectangular symmetrical structure, the sixth boss 504 is located at an upper end surface of the third body 501, the fourth boss 502 and the fifth boss 503 are both in a cylindrical symmetrical structure, the fourth boss 502 is located at a left end surface of the third body 501, and the twelve fifth bosses 503 are evenly located at a right end surface of the third body 501 along a circumferential direction; two cuboid second through grooves 507 are respectively formed in the left end face and the right end face of the sixth boss 504, and the wheels 10 are arranged in the second through grooves 507 in a penetrating manner; two cylindrical fourth through holes 505 are respectively formed on two sides of the second through groove 507, and the first hinge a9 is arranged in the fourth through holes 505 in a penetrating manner; a third rectangular tee slot 508 is formed on the left and right end surfaces of the sixth boss 504, so as to facilitate installation of the first hinge a9; fifty division scales are uniformly marked on the side surface of the fifth boss 503 along the circumferential direction, a first screw hole 506 is provided at the axial position of the fifth boss 503, the measuring rod 3 is screwed into the first screw hole 506, and the first screw hole 506 also penetrates through the third body 501 and the fourth boss 502.

Referring to fig. 9, the bottom plate 2 is a rectangular symmetrical structure, two sets of eight cylindrical third through holes 201 are symmetrically formed at the left and right ends of the bottom plate 2, the screw 12 is inserted into the third through holes 201, and the nut 13 is screwed at the threaded end of the screw 12.

Referring to fig. 17, the support plate 7 has a rectangular symmetrical structure, four cylindrical sixth through holes 702 are symmetrically formed in the support plate 7, and the screws 4 are inserted into the sixth through holes 702; a seventh through hole 703 in the shape of a regular octagon is formed in the central position of the support plate 7, and the rotating shaft 6 is arranged in the seventh through hole 703 in a penetrating manner; two groups of four cuboid-shaped second grooves 701 are symmetrically formed in the left end face of the support plate 7 and are used for guiding the wheels 10.

Referring to fig. 10, the measuring rod 3 is formed by connecting three parts, namely a contact section 301, a thread section 302 and a scale section 303, wherein the contact section 301 is of a hemispherical symmetrical structure and is used for contacting the end face of a steel pipe; the thread section 302 is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing the first screw hole 506 of the second bracket 5, and the pitch value of the threads is 0.5mm; the scale sections are of cylindrical symmetrical structures, four groups of scales are uniformly marked on the side face of the cylinder along the circumferential direction, each group of scales is composed of two adjacent upper and lower rows of staggered scales, the staggered value of the two rows of staggered scales is 0.5mm, and the minimum division value of the staggered scales is 1mm.

Referring to fig. 11, the screw 4 is formed by coaxially connecting a second body 401 and a third boss 402, where the second body 401 and the third boss 402 are both in cylindrical symmetrical structures, and the third boss 402 is located on the right end face of the second body 401; the end part of the third boss 402 is provided with threads for screwing the second screw hole 801 of the cushion block 8; a first through groove 403 in a cuboid shape is formed on the left end face of the second body 401, so as to facilitate screwing the screw 4.

Referring to fig. 16, the rotating shaft 6 is formed by connecting bearing sections 601 at two ends and a clamping section 602 in the middle; the bearing section 601 is a cylindrical symmetrical structure and is used for penetrating the rolling bearing 11; the clamping section 602 is of a regular octagon symmetrical structure and is used for penetrating the seventh through hole 703 of the support plate 7 and the eighth through hole 802 of the cushion block 8; the clamping section 602 is symmetrically provided with two cylindrical fifth through holes 603, and the second hinge b9 is arranged in the fifth through holes 603 in a penetrating manner.

Referring to fig. 18, the spacer 8 is in a symmetrical cuboid structure, an eighth through hole 802 in a regular octagon shape is formed in the center of the spacer 8, and the rotating shaft 6 is inserted into the eighth through hole 802; four second screw holes 801 are symmetrically formed in the cushion block 8, and the screws 4 are screwed into the second screw holes 801.

Example 2: the utility model provides an assembling process of a device for measuring the flatness of the end face of a steel pipe based on opposite arrangement

As shown in fig. 1 to 18, first, two wheels 10 are respectively inserted into eight second through grooves 507 of two second brackets 5, then the axle center holes of sixteen wheels 10 are centered with sixteen fourth through holes 505 of two second brackets 5, then one first hinge a9 is respectively installed in sixteen sets of centered through holes, thus two second brackets 5 and sixteen wheels 10 can be assembled into two second bracket vehicles;

then the cushion block 8 is arranged on the mounting table, then the opening of the second groove 701 of one support plate 7 faces downwards and is arranged on the cushion block 8, then four sixth through holes 702 of the support plate 7 and four second screw holes 801 of the cushion block 8 are centered, and then four screws 4 penetrate through the four sixth through holes 702 and are screwed into the four second screw holes 801, so that one support plate 7 and one cushion block 8 can be assembled;

then the support plate 7 and the cushion block 8 after assembly are turned up and down, then two second bracket vehicles are arranged on the support plate 7, then the opening of the second groove 701 of the other support plate 7 is downward and is arranged above the cushion block 8, sixteen wheels 10 are arranged in the eight second grooves 701 of the two support plates 7, at this time, four sixth through holes 702 of the support plate 7 and four second screw holes 801 of the cushion block 8 which are positioned on the upper side are necessarily kept in a centering relationship, and then the other four screws 4 pass through the four sixth through holes 702 and are screwed into the four second screw holes 801, so that the other support plate 7, the two second bracket vehicles and the cushion block 8 can be assembled;

then, the clamping sections 602 of the rotating shaft 6 are sequentially arranged in the two seventh through holes 703 of the two support plates 7 and the eighth through hole 802 of the cushion block 8 in a penetrating manner, and then, the second hinges b9 are respectively arranged in the two fifth through holes 603 of the rotating shaft 6, so that one rotating shaft 6, the two support plates 7 and the cushion block 8 can be assembled;

then, installing one rolling bearing 11 in each of the two first grooves 104 of the two first brackets 1, arranging the two first grooves 104 of the two first brackets 1 oppositely, and then penetrating two bearing sections 601 at two ends of the rotating shaft 6 into the two rolling bearings 11 respectively, so that the two first brackets 1, the two rolling bearings 11 and the rotating shaft 6 can be assembled;

then the bottom plate 2 is arranged on the mounting table, then two first brackets 1 are simultaneously arranged on the bottom plate 2, then eight second through holes 106 of the two first brackets 1 and eight third through holes 201 of the bottom plate 2 are centered, then one screw rod 12 is respectively penetrated into eight groups of centered through holes, then one nut 13 is respectively screwed at the threaded ends of the eight screw rods 12, finally twenty-four measuring rods 3 are respectively screwed into twenty-four first screw holes 506 of the two second brackets 5, and thus the whole device is assembled and can be put into use.

Example 3: the utility model provides a working principle of a device for measuring the flatness of the end face of a steel pipe based on opposite arrangement

As shown in fig. 19 and 20, the contact sections 301 of the measuring rod 3 are in a hemispherical symmetrical structure, and when the radius of the contact sections 301 is r, twelve contact sections 301 of twelve measuring rods 3 located at the zero-scale position just extend out of the fourth boss 502 of the second bracket 5, i.e. the extending lengths of twelve measuring rods 3 are r; setting the distance between the twelve measuring rods 3 and the end face of the steel pipe 14 to be delta n (n is a natural number from 1 to 12), and for the nth measuring rod 3, the relationship between the nth measuring rod 3 and the steel pipe 14 can be maintained tangent as long as the nth measuring rod 3 positioned at the zero scale position is screwed by the distance delta n;

as shown in fig. 21, for convenience of description, twelve measuring rods 3 uniformly arranged along the circumferential direction are sequentially set as the first part, the second part, the third part, the fourth part, the fifth part, the first part, the second part, the third part, the spare part, the third part and the spare part according to the clockwise direction corresponding to twelve clock points of the dial plate, the corresponding pipe ends of the steel pipes 14 are also divided into twelve positions, and the precession distances of the twelve measuring rods 3 are sequentially delta 1, delta 2, delta 3, delta 4, delta 5, delta 6, delta 7, delta 8, delta 9, delta 10, delta 11 and delta 12; it may be assumed that the value of Δ1 is the smallest, that is, the pipe end position of the steel pipe 14 corresponding to the first point is the highest base point, and the flatness of the pipe end position of the steel pipe 14 corresponding to the corresponding other eleven points is Δn—Δ1;

with reference to fig. 19 and 20, twenty-four scale segments 303 of twenty-four measuring rods 3 and twenty-four fifth bosses 503 of two second brackets 5 are combined to form twenty-four spiral micrometers, the measurement accuracy of each micrometer can reach 0.01mm, and the reasoning process comprises: since the pitch value of the thread of the measuring rod 3 is 0.5mm, that is, the axial distance moved by the measuring rod 3 per rotation is 0.5mm, and since fifty division scales are uniformly marked on the side surface of the fifth boss 503 along the circumferential direction, the axial distance moved by the measuring rod 3 within the first screw hole 506 per rotation of the measuring rod 3 is 0.01mm.

Example 4: the utility model provides a use process of a device for measuring the flatness of the end face of a steel pipe based on opposite arrangement

Step 1: firstly, the device for measuring the flatness of the end face of the steel pipe based on the opposite type is arranged in front of a conveying roller way, so that when two support plates 7 are vertically arranged, the second support 5 positioned below can keep a centering relation with the conveying roller way, and twenty-four measuring rods 3 are rotated to zero scale positions, as shown in figures 1 to 3;

step 2: then, the rotating shaft 6 is rotated, and the two support plates 7 are turned over to be horizontally arranged, so that the two second support frames are horizontally arranged, and then the steel pipe 14 is slowly conveyed to a certain position of the second support frame 5 below the position through the conveying roller way, wherein the certain position is a position convenient for measurement, as shown in fig. 4 and 5;

step 3: then the rotating shaft 6 is rotated, the two support plates 7 are turned over to be vertically arranged, the second support 5 positioned below naturally drops along the second grooves 701 of the two support plates 7 under the action of gravity of the two support plates, and at the moment, the fourth boss 502 of the second support 5 positioned below and the steel pipe 14 keep a centering relationship, as shown in fig. 1 and 3;

step 4: as shown in fig. 19 to 21, twelve measuring rods 3 with lower screwing positions are screwed in, twelve contact sections 301 are contacted with the end face of the steel pipe 14, at this time, the twelve contact sections 301 are in tangential relation with the steel pipe 14, the distance deltan of screwing in the twelve measuring rods 3 is read, the minimum value is found, and the difference calculation is performed.

Supplementary explanation: the device for measuring the flatness of the end face of the steel pipe based on the opposite type is designed by adopting a symmetrical structure, and a plurality of specifications of the device is designed and manufactured according to the specification of the outer diameter and the specification of the wall thickness of the steel pipe 14 and matched with the device, so that when two support plates 7 are kept vertically arranged for the steel pipe 14 with specific specification of the outer diameter and the specification of the wall thickness, the fourth boss 502 of the second support 5 at the lower position and the steel pipe 14 can be kept in a centering relationship, and meanwhile, the contact sections 301 of the twelve measuring rods 3 at the lower position and the end face of the steel pipe 14 can be kept in a centering relationship; twenty four of the measuring bars 3 and twenty four of the fifth bosses 503 of the second brackets 5 are all kept in aligned relation to ensure the effectiveness of the measurement.

According to the embodiment, the device for measuring the flatness of the end face of the steel pipe based on the opposite type can achieve the purpose of rapidly measuring and calculating the flatness of twelve parts of the end face of the steel pipe along the circumferential direction, and has the characteristics of low manufacturing cost, simplicity in operation and high measurement precision.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof.

Claims (1)

1. Device based on steel pipe terminal surface roughness is measured to opposition, its characterized in that, based on device of steel pipe terminal surface roughness is measured to opposition includes: the device comprises two first brackets (1), two second brackets (5), a bottom plate (2), two support plates (7), twenty-four measuring rods (3), eight screws (4), a rotating shaft (6), a cushion block (8), sixteen wheels (10), sixteen first hinges (a 9), two second hinges (b 9), two rolling bearings (11), eight screws (12) and eight nuts (13); wherein:

the first bracket (1) is formed by connecting a first body (101), two first bosses (102) and a second boss (103), wherein the first body (101), the first bosses (102) and the second bosses (103) are all of cuboid symmetrical structures, the two first bosses (102) are simultaneously positioned on the upper end face of the first body (101), and the second bosses (103) are positioned on the upper end faces of the two first bosses (102); a cylindrical first groove (104) is formed in the center of the second boss (103), and the rolling bearing (11) is arranged in the first groove (104) in a penetrating manner; a cylindrical first through hole (105) is formed in the axis position of the first groove (104), and a bearing section (601) of the rotating shaft (6) is arranged in the first through hole (105) in a penetrating mode; four cylindrical second through holes (106) are symmetrically formed in the first body (101), the screw (12) is arranged in the second through holes (106) in a penetrating mode, and the nut (13) is screwed at the threaded end of the screw (12);

the second bracket (5) is formed by connecting a third body (501), a fourth boss (502), twelve fifth bosses (503) and a sixth boss (504), wherein the third body (501) and the sixth boss (504) are both in cuboid symmetrical structures, the sixth boss (504) is positioned on the upper end face of the third body (501), the fourth boss (502) and the fifth boss (503) are both in cylinder symmetrical structures, the fourth boss (502) is positioned on the left end face of the third body (501), and the twelve fifth bosses (503) are uniformly positioned on the right end face of the third body (501) along the circumferential direction; two cuboid second through grooves (507) are respectively formed in the left end face and the right end face of the sixth boss (504), and the wheels (10) are arranged in the second through grooves (507) in a penetrating mode; two cylindrical fourth through holes (505) are respectively formed on two sides of the second through groove (507), and the first hinge (a 9) is arranged in the fourth through holes (505) in a penetrating manner; a third cuboid-shaped tee slot (508) is formed in the left end face and the right end face of the sixth boss (504) respectively so as to facilitate the installation of the first hinge (a 9); fifty division scales are uniformly marked on the side surface of the fifth boss (503) along the circumferential direction, a first screw hole (506) is formed in the axial position of the fifth boss (503), the measuring rod (3) is screwed in the first screw hole (506), and the first screw hole (506) penetrates through the third body (501) and the fourth boss (502) at the same time;

the bottom plate (2) is of a cuboid symmetrical structure, two groups of eight cylindrical third through holes (201) are symmetrically formed in the left end and the right end of the bottom plate (2), the screw (12) is penetrated into the third through holes (201), and the nut (13) is screwed at the threaded end of the screw (12);

the support plate (7) is of a cuboid symmetrical structure, four cylindrical sixth through holes (702) are symmetrically formed in the support plate (7), and the screws (4) penetrate through the sixth through holes (702); a seventh through hole (703) in the shape of a regular octagon is formed in the center of the support plate (7), and the rotating shaft (6) is arranged in the seventh through hole (703) in a penetrating manner; two groups of second grooves (701) which are in a shape of a cuboid and are used for guiding the wheels (10) are symmetrically arranged on the left end face of the support plate (7);

the measuring rod (3) is formed by connecting a contact section (301), a thread section (302) and a scale section (303), wherein the contact section (301) is of a hemispherical symmetrical structure and is used for contacting the end face of a steel pipe; the thread section (302) is of a cylindrical symmetrical structure with threads on the side surface, and is used for screwing the first screw hole (506) of the second bracket (5), and the pitch value of the threads is 0.5mm; the scale sections are of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side surface of the cylinder along the circumferential direction, each group of scales consists of two adjacent upper and lower rows of staggered scales, the staggered value of the two rows of staggered scales is 0.5mm, and the minimum division value of the staggered scales is 1mm;

the screw (4) is formed by connecting a second body (401) and a third boss (402) which are coaxial, the second body (401) and the third boss (402) are both in cylindrical symmetrical structures, and the third boss (402) is positioned on the right end face of the second body (401); the end part of the third boss (402) is provided with threads for screwing the second screw hole (801) of the cushion block (8); a first cuboid through groove (403) is formed in the left end face of the second body (401) so as to facilitate screwing of the screw (4);

the rotating shaft (6) is formed by connecting bearing sections (601) at two ends and a clamping section (602) in the middle; the bearing section (601) is of a cylindrical symmetrical structure and is used for penetrating the rolling bearing (11); the clamping section (602) is of a regular octagon symmetrical structure and is used for penetrating a seventh through hole (703) of the support plate (7) and an eighth through hole (802) of the cushion block (8); the clamping section (602) is symmetrically provided with two cylindrical fifth through holes (603), and the second hinges (b 9) are arranged in the fifth through holes (603) in a penetrating mode;

the cushion block (8) is of a cuboid symmetrical structure, an eighth through hole (802) in a regular octagon shape is formed in the center of the cushion block (8), and the rotating shaft (6) is arranged in the eighth through hole (802) in a penetrating mode; four second screw holes (801) are symmetrically formed in the cushion block (8), and the screws (4) are screwed in the second screw holes (801);

one cushion block (8) is arranged between two opposite support plates (7) in a penetrating way and is connected through eight screws (4); one rotating shaft (6) is arranged in the two seventh through holes (703) of the two support plates (7) and the eighth through hole (802) of the cushion block (8) in a penetrating manner, two bearing sections (601) of the rotating shaft (6) are arranged in the two rolling bearings (11) in a penetrating manner, and the two rolling bearings (11) are arranged in the two first grooves (104) of the two first brackets (1); the two first brackets (1) are oppositely arranged on the bottom plate (2) and are connected with the eight nuts (13) through eight screws (12); sixteen wheels (10) are rolled in eight second grooves (701) of the two support plates (7), the sixteen wheels (10) are penetrated in eight second through grooves (507) of the two opposite second brackets (5), and are hinged through sixteen first hinges (a 9); twenty-four measuring rods (3) are screwed into twenty-four first screw holes (506) of the two second brackets (5).

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