CN214250825U - Device for measuring inner diameter of steel pipe - Google Patents
Device for measuring inner diameter of steel pipe Download PDFInfo
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- CN214250825U CN214250825U CN202023107810.7U CN202023107810U CN214250825U CN 214250825 U CN214250825 U CN 214250825U CN 202023107810 U CN202023107810 U CN 202023107810U CN 214250825 U CN214250825 U CN 214250825U
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Abstract
The utility model discloses a measure device of steel pipe internal diameter belongs to the steel pipe measuring technical field. The utility model provides a measure device of steel pipe internal diameter comprises two measuring sticks, a cushion, a branch, two work screw rods, two extension boards, a support, eight wheels, eight hinges, eight screw rods and eight nuts, and its material is ordinary, and make things convenient for the machine-shaping. Utilize the utility model provides a device of measurement steel pipe internal diameter can realize fixing a position and measuring the inner wall of steel pipe fast to can calculate the internal diameter of steel pipe, consequently, the utility model discloses the device has low in manufacturing cost, easy operation, characteristics that measurement accuracy is high.
Description
Technical Field
The utility model belongs to the technical field of the steel pipe is measured, concretely relates to measure device of steel pipe internal diameter.
Background
At present, in seamless steel tube production enterprises, hot rolling perforation, continuous tube rolling and tension reducing tube making processes are generally adopted, and are influenced by factors such as self gravity or rolling force, the steel tube always generates quality problems such as similar bending or ellipse and the like along the axial direction, the appearance size precision of the steel tube is directly influenced, and the use performance and the processing performance of the steel tube are further influenced, so that the inner diameter of the steel tube is generally strictly required in many mechanical processing industries using the steel tube as a raw material, and the inner diameter of the steel tube needs to be measured one by one; the conventional inner diameter measuring device cannot determine the axis of the steel pipe, and only the largest chord in the steel pipe can be taken as the diameter by the lengthened measuring rod, which may cause that the device is not perpendicular to the axis of the steel pipe during measurement, which is actually used for measuring the diameter of an ellipse in the steel pipe, and the largest chord can be found by measuring for many times, so the operation process of the devices is relatively complicated.
Document CN2705773Y discloses an inner diameter measuring device, which mainly comprises a positioner, a positioning ball, a positioning column, a sliding sleeve, a measuring ball, a length-variable measuring rod and a measuring meter, and although the inner diameter measuring device has an automatic positioning function, the stability is relatively poor, and therefore, the measuring accuracy of the inner diameter measuring device is relatively low.
Document CN103047912A discloses a digital display inside diameter measuring micrometer, which mainly comprises a fixed elbow measuring frame, a movable elbow measuring frame, an elbow positioning screw and a transmission device, wherein two digital display inside diameter micrometers are combined in parallel, and can simultaneously measure the maximum value and the minimum value of the inside diameter of a steel pipe.
Document CN201335669Y discloses an inner diameter measuring device, which mainly comprises a ruler frame, an anvil, a differential measuring head, a connecting bush, a fixing sleeve, an upper connecting rod and a lower connecting rod, and the measuring precision of the device is relatively low because the device has no positioning function.
SUMMERY OF THE UTILITY MODEL
To problem one or more that exist among the prior art, the utility model provides a measure device of steel pipe internal diameter, it includes: the device comprises two measuring rods (3), a cushion block (4), a support rod (5), two working screw rods (6), two support plates (7), a support (10), eight wheels (11), eight hinges (9), eight screw rods (2) and eight nuts (8); wherein:
the measuring rod (3) is of a cylindrical symmetrical structure and is formed by connecting a thread section (301), a scale section (302) and a contact section (303); the thread section (301) is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing a first screw hole (504) of the support rod (5), and the thread pitch value of the threads is 0.5 mm; the scale section (302) is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side face of the scale section, each group of scales consists of two adjacent left and right staggered lines of scales, the dislocation value of the two staggered lines of scales is 0.5mm, and the cell value of the two staggered lines of scales is 1 mm; the contact section (303) is of a hemispheroid symmetrical structure and is used for contacting the inner wall of the steel pipe;
the cushion blocks (4) are of rectangular symmetrical structures; the cushion block (4) is symmetrically provided with four cylindrical first through holes (401), the screw rod (2) penetrates through the first through holes (401), and one end of the screw rod (2) is screwed with the nut (8); a cylindrical second through hole (402) is formed in the center of the cushion block (4), and a first boss (501) of the support rod (5) penetrates through the second through hole (402);
the support rod (5) is formed by connecting a first main body (502) and two first bosses (501), and the two first bosses (501) are symmetrically arranged at the upper end and the lower end of the first main body (502); the first boss (501) is of a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the end face of the first boss (501) along the circumferential direction and used for dividing one unit pitch into fifty equal parts; the end part of the first boss (501) is provided with a cylindrical first screw hole (504), and the measuring rod (3) is screwed in the first screw hole (504); the first screw hole (504) also penetrates through the center of the first main body (502), and the thread pitch value of the first screw hole (504) is 0.5 mm; the first main body (502) is of a cuboid-shaped symmetrical structure, four cylindrical third through holes (503) are symmetrically formed in the first main body (502), the screw rod (2) penetrates through the third through holes (503), and one end of the screw rod (2) is screwed with the nut (8); the first main body (502) is symmetrically provided with two cylindrical second screw holes (505), and the working screw (6) is screwed in the second screw holes (505);
the working screw (6) is in a screw-shaped symmetrical structure and consists of a rod head (601) and a rod body (602) which are coaxially connected; the rod head (601) is of a cylindrical symmetrical structure and is used for applying external force to the working screw rod (6); the rod body (602) is a cylindrical symmetrical structure with threads on the outer surface and is used for screwing a second screw hole (505) of the support rod (5) so as to position the bracket (10);
the support plate (7) is formed by connecting a second main body (703) and four second bosses (701), wherein the four second bosses (701) are symmetrically arranged at the upper end and the lower end of the second main body (703); the second bosses (701) are of a cuboid-shaped symmetrical structure, two cuboid-shaped grooves (705) are symmetrically formed in the two second bosses (701) which are positioned at the upper positions, and the wheels (11) are placed in the grooves (705); four cylindrical fourth through holes (702) are symmetrically formed in the two second bosses (701) positioned below, the screw rod (2) penetrates through the fourth through holes (702), and one end of the screw rod (2) is screwed with the nut (8); the second main body (703) is of a cuboid-shaped symmetrical structure, four cylindrical fifth through holes (704) are symmetrically formed in the second main body (703), the screw rod (2) penetrates through the fifth through holes (704), and one end of the screw rod (2) is screwed with the nut (8);
the support (10) is formed by connecting a third main body (1004), a third boss (1002) and four fourth bosses (1003), wherein the third boss (1002) is arranged at the lower end of the third main body (1004), and the four fourth bosses (1003) are symmetrically arranged at the left end and the right end of the third main body (1004); the third boss (1002) is of a cuboid-shaped symmetrical structure, a cylindrical eighth through hole (1006) is formed in the center of the third boss (1002), and the first boss (501) of the support rod (5) penetrates through the eighth through hole (1006); the fourth bosses (1003) are of a cuboid symmetrical structure, each fourth boss (1003) is provided with a cuboid sixth through hole (1001), and the wheel (11) penetrates through the sixth through hole (1001); two cylindrical seventh through holes (1005) are formed in the left side and the right side of each sixth through hole (1001), and the hinge (9) penetrates through the seventh through holes (1005); the third main body (1004) is a cuboid-shaped symmetrical structure, and the eighth through hole (1006) also penetrates through the center position of the third main body (1004);
the wheel (11), the hinge (9), the screw rod (2) and the nut (8) are all standard parts.
The device of measuring steel pipe internal diameter that provides based on above technical scheme comprises two measuring sticks, a cushion, a branch, two work screw rods, two extension boards, a support, eight wheels, eight hinges, eight screw rods and eight nuts, and the material is ordinary, and make things convenient for machine-shaping, consequently, the utility model discloses the manufacturing cost of device is lower relatively.
When using, can with the utility model discloses within the device was worn to establish the steel pipe, all contacted the inner wall of steel pipe with four second bosss of two extension board lower parts, precession two work screw rods, until the inner wall that the support contacted the steel pipe, screw out two measuring sticks respectively, all contacted the inner wall of steel pipe up to two contact segments, read the measuring stick rebound's of upper end distance delta d respectively1And the distance Deltad of downward movement of the lower measuring rod2Then substituting the formula to calculate the inner diameter of the steel pipeTherefore, the operation process of the device of the utility model is relatively simple.
The device of the utility model is designed by adopting a symmetrical structure, and the combined use of the bracket, the wheels and the support plate can realize that the bracket moves according to a preset track; the support plate, the cushion block, the working screw, the support rod and the support are used in a combined manner, so that the support and the support plate can position the inner wall of the steel pipe; the scale section of measuring stick and the combined use of two first bosss of branch can constitute two micrometer calipers to realize the accurate purpose of measuring and calculating the steel pipe internal diameter, consequently, the utility model discloses the measurement accuracy of device is higher relatively.
Through the utility model provides a device of measurement steel pipe internal diameter can realize fixing a position and measuring the inner wall of steel pipe fast to can calculate the internal diameter of steel pipe, the utility model discloses the device has low in manufacturing cost, easy operation, characteristics that measurement accuracy is high.
Drawings
Fig. 1 is a schematic view of a front view structure of a device for measuring an inner diameter of a steel pipe, which is provided by the present invention, before measurement;
fig. 2 is a left side view structure schematic diagram of the device for measuring the inner diameter of the steel pipe provided by the utility model before measurement;
fig. 3 is a schematic view of the structure of the device for measuring the inner diameter of the steel pipe in the measurement process according to the present invention;
fig. 4 is a left side view structural diagram of the device for measuring the inner diameter of the steel pipe provided by the present invention during measurement;
fig. 5 is a schematic top view of the device for measuring the inner diameter of the steel pipe according to the present invention;
fig. 6 is a schematic view of the measuring rod according to the present invention;
fig. 7 is a schematic front view of a cushion block provided by the present invention;
fig. 8 is a schematic top view of the cushion block according to the present invention;
fig. 9 is a schematic front view of the support rod provided by the present invention;
fig. 10 is a schematic top view of the support rod provided by the present invention;
fig. 11 is a schematic structural view of the working screw according to the present invention;
fig. 12 is a schematic front view of a support plate according to the present invention;
fig. 13 is a front view of the bracket and wheel assembly of the present invention;
fig. 14 is a left side view of the bracket and wheel assembly of the present invention;
fig. 15 is a schematic bottom view of the bracket and wheel assembly of the present invention;
fig. 16 is a schematic view of the design principle of the device for measuring the inner diameter of the steel pipe provided by the present invention during measurement.
Fig. 17 is a schematic view of the working principle of the device for measuring the inner diameter of the steel pipe provided by the present invention during measurement.
Description of reference numerals: 1-a steel pipe; 2-a screw; 3-a measuring rod; 301-a threaded segment; 302-scale section; 303-a contact section; 4-cushion block; 401 — a first via; 402-a second via; 5-a strut; 501-a first boss; 502-a first body; 503-a third via; 504-first screw hole; 505-a second screw hole; 6-working screw rod; 601-a club head; 602-a rod body; 7-a support plate; 701-a second boss; 702-a fourth via; 703-a second body; 704-a fifth via; 705-groove; 8-a nut; 9-hinging; 10-a scaffold; 1001-sixth via; 1002-a third boss; 1003-fourth boss; 1004 — a third body; 1005-a seventh via; 1006-eighth via; 11-wheels.
Detailed Description
The following detailed description of the present invention is provided by way of examples and drawings, which are only for the understanding of the present invention and are not intended to limit the present invention.
As shown in fig. 1-4, the utility model provides a measure device of steel pipe internal diameter comprises two measuring sticks 3, a cushion 4, a branch 5, two working screw rods 6, two extension boards 7, a support 10, eight wheels 11, eight hinges 9, eight screws 2 and eight nuts 8, wherein each part all uses metal material to make.
As shown in fig. 5 and 6, the measuring rod 3 has a cylindrical symmetrical structure and is formed by connecting three parts, namely a threaded section 301, a scale section 302 and a contact section 303; the thread section 301 is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing a first screw hole 504 of the support rod 5, and the thread pitch value of the threads is 0.5 mm; the scale section 302 is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side face of the scale section, each group of scales consists of two adjacent left and right staggered rows of scales, the staggered value of the two staggered rows of scales is 0.5mm, and the cell value of the two staggered rows of scales is 1 mm; the contact section 303 is a hemispheroid symmetrical structure and is used for contacting the inner wall of the steel pipe 1.
As shown in fig. 7 and 8, the cushion block 4 has a rectangular parallelepiped symmetrical structure; the cushion block 4 is symmetrically provided with four cylindrical first through holes 401, the screw rod 2 penetrates through the first through holes 401, and one end of the screw rod 2 is screwed with the nut 8; a second through hole 402 having a cylindrical shape is formed in the center of the spacer 4, and a first boss 501 of the supporting rod 5 is inserted into the second through hole 402.
As shown in fig. 9 and 10, the supporting rod 5 is formed by connecting a first main body 502 and two first bosses 501, and the two first bosses 501 are symmetrically disposed at the upper and lower ends of the first main body 502; the first boss 501 is a cylindrical symmetrical structure, and fifty division scales are uniformly marked on the end face of the first boss 501 along the circumferential direction and used for dividing one unit pitch into fifty equal parts; a first cylindrical screw hole 504 is formed in the end of the first boss 501, and the measuring rod 3 is screwed in the first screw hole 504; the first screw hole 504 also penetrates through the center of the first main body 502, and the thread pitch of the first screw hole 504 is 0.5 mm; the first main body 502 is a cuboid symmetrical structure, four cylindrical third through holes 503 are symmetrically formed in the first main body 502, the screw rod 2 penetrates through the third through holes 503, and one end of the screw rod 2 is screwed with the nut 8; the first body 502 is symmetrically provided with two cylindrical second screw holes 505, and the working screw 6 is screwed into the second screw holes 505.
As shown in fig. 11, the working screw 6 is a screw-like symmetrical structure, and is composed of a rod head 601 and a rod body 602 which are coaxially connected; the rod head 601 is a cylindrical symmetrical structure and is used for applying external force to the working screw 6; the rod 602 is a cylindrical symmetrical structure with threads on the outer surface, and is used for screwing the second screw hole 505 of the strut 5 so as to position the bracket 10.
As shown in fig. 12, the support plate 7 is formed by connecting a second main body 703 and four second bosses 701, where the four second bosses 701 are symmetrically disposed at upper and lower ends of the second main body 703; the second bosses 701 are of a rectangular parallelepiped symmetrical structure, two rectangular parallelepiped grooves 705 are symmetrically formed in the two second bosses 701 positioned at the top, and the wheels 11 are placed in the grooves 705; four cylindrical fourth through holes 702 are symmetrically formed in the two lower second bosses 701, the screw rod 2 penetrates through the fourth through holes 702, and one end of the screw rod 2 is screwed with the nut 8; the second body 703 is a rectangular symmetrical structure, four cylindrical fifth through holes 704 are symmetrically formed in the second body 703, the screw rod 2 penetrates through the fifth through holes 704, and the nut 8 is screwed to one end of the screw rod 2.
As shown in fig. 13 to fig. 15, the bracket 10 is formed by connecting a third main body 1004, a third boss 1002 and four fourth bosses 1003, the third boss 1002 is disposed at a lower end of the third main body 1004, and the four fourth bosses 1003 are symmetrically disposed at left and right ends of the third main body 1004; the third boss 1002 is a cuboid symmetrical structure, a cylindrical eighth through hole 1006 is formed in the center of the third boss 1002, and the first boss 501 of the support rod 5 penetrates through the eighth through hole 1006; the fourth bosses 1003 are of a cuboid symmetrical structure, each fourth boss 1003 is provided with a cuboid sixth through hole 1001, and the wheel 11 penetrates through the sixth through hole 1001; two cylindrical seventh through holes 1005 are formed in the left side and the right side of each sixth through hole 1001, and the hinge 9 penetrates through the seventh through hole 1005; the third body 1004 is a symmetrical structure with a rectangular parallelepiped shape, and the eighth through hole 1006 also penetrates through the center of the third body 1004.
The utility model provides an equipment process of measuring device of steel pipe internal diameter includes:
as shown in fig. 1 to 15, first, two positions in the four sixth through holes 1001 of the bracket 10 are respectively penetrated with one wheel 11, so as to ensure that the axle holes of the eight wheels 11 are aligned with the eight seventh through holes 1005 of the bracket 10, and then one hinge 9 is respectively installed in the eight aligned through holes, so that the bracket 10 and the eight wheels 11 can be assembled into a bracket vehicle;
then the groove 705 of one support plate 7 is arranged on the mounting platform with the opening facing upwards, then the support 10 is sleeved on one first boss 501 of the support rod 5 through the eighth through hole 1006, the strut 5 is then positioned over the support plate 7, ensuring that the four wheels 11 mounted to the carriage are located within the two grooves 705 of the support plate 7, then the groove 705 of the other plate 7 is arranged on the support rod 5 with the opening facing downwards, and eight fifth through holes 704 of the two plates 7 are ensured to be aligned with four third through holes 503 of the support rod 5, then, one screw rod 2 is respectively penetrated in the through holes in the four pairs, then the other ends of the four screw rods 2 are respectively screwed with one nut 8, thus, the two stay plates 7, the stay 5, and the bracket vehicle can be assembled;
then, the two working screws 6 are screwed into the two second screw holes 505 of the supporting rod 5 from the lower part, then the cushion block 4 is sleeved on the other first boss 501 of the supporting rod 5 through the second through hole 402, so as to ensure that the four first through holes 401 of the cushion block 4 are aligned with the eight fourth through holes 702 of the two supporting plates 7, then one screw 2 is respectively penetrated in the through holes in the four pairs, then one nut 8 is respectively screwed at the other end of each of the four screws 2, and finally the thread sections 301 of the two measuring rods 3 are respectively screwed into the two first screw holes 504 of the supporting rod 5, so that the whole device is assembled and can be put into use.
The utility model provides a measure the theory of operation of device of steel pipe internal diameter:
as shown in fig. 16, the two support plates 7 and the support 10 may form a rectangular frame ABCD, when the inner diameter of the steel pipe 1 is measured, four vertexes of the rectangular frame ABCD are all located on the inner wall of the steel pipe 1, since the chord corresponding to the circumferential angle of 90 degrees must be the diameter, for the right triangle ABC and the right triangle BCD, it can be inferred that the line segment AC and the line segment BD are both the diameters; because the intersection point of the two diameters is the circle center, the intersection point O of the line segment AC and the line segment BD can be inferred to be the circle center, the passing point O is used as a vertical line of the line segment AB and respectively intersects the circumference at the point E and the point F, and the line segment EF is the diameter of a circle;
during measurement, the contact sections 303 of the two measuring rods 3 are in contact with the inner wall of the steel pipe 1, that is, the contact sections 303 of the two measuring rods 3 are in circular inscribed with the inner wall of the steel pipe 1, and the distance of upward movement of the measuring rod 3 at the upper position at the moment is set as delta d1And the distance of downward movement of the lower measuring rod 3 is set as delta d2The inner diameter d of the steel pipe 1x＝d0+△d1+△d2+2r, the distance between the two first bosses 501 of the strut 5 is d0The radius of the contact section 303 of the measuring rod 3 is set to r, as shown in fig. 17;
the scale section 302 of the measuring rod 3 and the two first bosses 501 of the supporting rod 5 are jointly used to form two micrometer screw gauges, the measuring precision of the micrometer screw gauges can also reach 0.01mm, and the reasoning process is as follows: since the thread pitch of the first screw hole 504 is 0.5mm, that is, the axial distance of the movement of the measuring rod 3 is 0.5mm when the measuring rod rotates one circle in the first screw hole 504 of the supporting rod 5, and since fifty division scales are uniformly marked on the side surface of the first boss 501 along the circumferential direction, the axial distance of the movement of the measuring rod 3 in the first screw hole 504 of the supporting rod 5 is 0.01mm when the measuring rod 3 rotates one division scale.
The utility model provides a measure the use of device of steel pipe internal diameter:
as shown in fig. 1 and 2, firstly, the assembled device is vertically inserted into the steel pipe 1, then four second bosses 701 below two support plates 7 are all in contact with the inner wall of the steel pipe 1, then two working screws 6 are simultaneously screwed in at a constant speed, so that the support vehicle is pushed to move upwards along four grooves 705 of the two support plates 7, and when two fourth bosses 1003 of the support 10 are all in contact with the inner wall of the steel pipe 1, the screwing in of the two working screws 6 is stopped;
as shown in fig. 3 and 4, then, two measuring rods 3 are respectively screwed out, when both contact sections 303 of the two measuring rods 3 are in contact with the inner wall of the steel pipe 1, the screwing-out of the two measuring rods 3 is stopped, at this time, both contact sections 303 are in a circle inscribing state with the inner wall of the steel pipe 1, and then, the distance Δ d of the upward movement of the measuring rod 3 at the position above is respectively read1And the distance Δ d of downward movement of the lower measuring rod 32Then substituted into formula dx＝d0+△d1+△d2+2r, the inner diameter d of the steel pipe 1 can be calculatedx；
Then precess two respectively the measuring stick 3 guarantees two the two contact segments 303 of measuring stick 3 all with the inner wall separation of steel pipe 1, then at the uniform velocity back-out two simultaneously work screw 6, thereby make the support car is along two four recess 705 downstream of extension board 7 guarantee two fourth bosss 1003 of support 10 all with the inner wall separation of steel pipe 1, then will the utility model discloses the device is followed take out in the steel pipe 1.
Supplementary explanation: the utility model provides a device of measurement steel pipe internal diameter adopts the structure of symmetry to design, two measuring stick 3 with two first boss 501's of branch 5 initial scale mark all keep the alignment state to guarantee measured validity.
Can see through the embodiment, adopt the utility model provides a device of measurement steel pipe internal diameter can realize fixing a position and measuring the inner wall of steel pipe fast to can calculate the internal diameter of steel pipe, the utility model discloses the device has low in manufacturing cost, easy operation, characteristics that measurement accuracy is high.
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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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. An apparatus for measuring an inner diameter of a steel pipe, comprising: the device comprises two measuring rods (3), a cushion block (4), a support rod (5), two working screw rods (6), two support plates (7), a support (10), eight wheels (11), eight hinges (9), eight screw rods (2) and eight nuts (8); wherein:
the measuring rod (3) is of a cylindrical symmetrical structure and is formed by connecting a thread section (301), a scale section (302) and a contact section (303); the thread section (301) is a cylindrical symmetrical structure with threads on the side surface, and is used for screwing a first screw hole (504) of the support rod (5), and the thread pitch value of the threads is 0.5 mm; the scale section (302) is of a cylindrical symmetrical structure, four groups of scales are uniformly marked on the side face of the scale section, each group of scales consists of two adjacent left and right staggered lines of scales, the dislocation value of the two staggered lines of scales is 0.5mm, and the cell value of the two staggered lines of scales is 1 mm; the contact section (303) is of a hemispheroid symmetrical structure and is used for contacting the inner wall of the steel pipe;
the cushion blocks (4) are of rectangular symmetrical structures; the cushion block (4) is symmetrically provided with four cylindrical first through holes (401), the screw rod (2) penetrates through the first through holes (401), and one end of the screw rod (2) is screwed with the nut (8); a cylindrical second through hole (402) is formed in the center of the cushion block (4), and a first boss (501) of the support rod (5) penetrates through the second through hole (402);
the support rod (5) is formed by connecting a first main body (502) and two first bosses (501), and the two first bosses (501) are symmetrically arranged at the upper end and the lower end of the first main body (502); the first boss (501) is of a cylindrical symmetrical structure, and fifty grid scales are uniformly marked on the end face of the first boss (501) along the circumferential direction and used for dividing one unit pitch into fifty equal parts; the end part of the first boss (501) is provided with a cylindrical first screw hole (504), and the measuring rod (3) is screwed in the first screw hole (504); the first screw hole (504) also penetrates through the center of the first main body (502), and the thread pitch value of the first screw hole (504) is 0.5 mm; the first main body (502) is of a cuboid-shaped symmetrical structure, four cylindrical third through holes (503) are symmetrically formed in the first main body (502), the screw rod (2) penetrates through the third through holes (503), and one end of the screw rod (2) is screwed with the nut (8); the first main body (502) is symmetrically provided with two cylindrical second screw holes (505), and the working screw (6) is screwed in the second screw holes (505);
the working screw (6) is in a screw-shaped symmetrical structure and consists of a rod head (601) and a rod body (602) which are coaxially connected; the rod head (601) is of a cylindrical symmetrical structure and is used for applying external force to the working screw rod (6); the rod body (602) is a cylindrical symmetrical structure with threads on the outer surface and is used for screwing a second screw hole (505) of the support rod (5) so as to position the bracket (10);
the support plate (7) is formed by connecting a second main body (703) and four second bosses (701), wherein the four second bosses (701) are symmetrically arranged at the upper end and the lower end of the second main body (703); the second bosses (701) are of a cuboid-shaped symmetrical structure, two cuboid-shaped grooves (705) are symmetrically formed in the two second bosses (701) which are positioned at the upper positions, and the wheels (11) are placed in the grooves (705); four cylindrical fourth through holes (702) are symmetrically formed in the two second bosses (701) positioned below, the screw rod (2) penetrates through the fourth through holes (702), and one end of the screw rod (2) is screwed with the nut (8); the second main body (703) is of a cuboid-shaped symmetrical structure, four cylindrical fifth through holes (704) are symmetrically formed in the second main body (703), the screw rod (2) penetrates through the fifth through holes (704), and one end of the screw rod (2) is screwed with the nut (8);
the support (10) is formed by connecting a third main body (1004), a third boss (1002) and four fourth bosses (1003), wherein the third boss (1002) is arranged at the lower end of the third main body (1004), and the four fourth bosses (1003) are symmetrically arranged at the left end and the right end of the third main body (1004); the third boss (1002) is of a cuboid-shaped symmetrical structure, a cylindrical eighth through hole (1006) is formed in the center of the third boss (1002), and the first boss (501) of the support rod (5) penetrates through the eighth through hole (1006); the fourth bosses (1003) are of a cuboid symmetrical structure, each fourth boss (1003) is provided with a cuboid sixth through hole (1001), and the wheel (11) penetrates through the sixth through hole (1001); two cylindrical seventh through holes (1005) are formed in the left side and the right side of each sixth through hole (1001), and the hinge (9) penetrates through the seventh through holes (1005); the third main body (1004) is a cuboid-shaped symmetrical structure, and the eighth through hole (1006) also penetrates through the center position of the third main body (1004);
the wheel (11), the hinge (9), the screw rod (2) and the nut (8) are all standard parts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023107810.7U CN214250825U (en) | 2020-12-21 | 2020-12-21 | Device for measuring inner diameter of steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023107810.7U CN214250825U (en) | 2020-12-21 | 2020-12-21 | Device for measuring inner diameter of steel pipe |
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| CN214250825U true CN214250825U (en) | 2021-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026208A (en) * | 2023-03-24 | 2023-04-28 | 中国电建集团山东电力建设第一工程有限公司 | Engineering pipeline installation measuring device |
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2020
- 2020-12-21 CN CN202023107810.7U patent/CN214250825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026208A (en) * | 2023-03-24 | 2023-04-28 | 中国电建集团山东电力建设第一工程有限公司 | Engineering pipeline installation measuring device |
| CN116026208B (en) * | 2023-03-24 | 2023-08-22 | 中国电建集团山东电力建设第一工程有限公司 | Engineering pipeline installation measuring device |
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Effective date of registration: 20221223 Address after: 014000 New Unit Office Building of Steel Pipe Company, Hexi Industrial Park, Kundulun District, Baotou, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Baotou Steel Pipe Co.,Ltd. Address before: 014010 Hexi Industrial Zone, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Patentee before: BAOTOU IRON & STEEL (GROUP) Co.,Ltd. |
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