Device for measuring straightness of round steel based on double stations

Abstract

The utility model discloses a device for measuring straightness of round steel based on double stations, and belongs to the technical field of round steel measuring equipment. The device comprises four first supports, a second support, a third support, two fourth supports, two fifth supports, a bottom plate, eight linear bearings, two measuring rods, forty-eight screws, four connecting rods, four wheels, four hinges, thirty-two screw rods and thirty-two nuts, wherein the four first supports, the second support, the third support, the two fourth supports, the two fifth supports, the bottom plate, the eight linear bearings, the two measuring rods, the forty-eight screws, the four connecting rods, the four wheels, the four hinges, the thirty-two screw rods and the thirty-two nuts are arranged on the bottom plate. The device can measure and calculate the straightness of the two pieces of round steel at the same time, so that the round steel with unqualified straightness is removed, and the device has the characteristics of low manufacturing cost, simplicity in operation and good use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of round steel measuring equipment, and in particular relates to a device for measuring the straightness of round steel based on a double-station. Background Art

[0002] At present, round steel is a kind of raw material frequently used in the process of mechanical processing. It can be divided into small round steel and large round steel according to the size of diameter specifications. Since round steel is usually produced by converter smelting + refining outside the furnace + arc continuous casting, it is cut to a fixed length after tensile straightening. Due to the influence of its own gravity, straightening pressure or uneven cooling and other factors, the round steel will have quality problems such as non-straightness along the axial direction, which will directly affect the dimensional accuracy of the round steel, and then affect the use performance and processing performance of the round steel. This requires the straightness of the round steel to be measured one by one, so as to be able to timely eliminate the round steel that does not meet the accuracy requirements; in view of this, some companies have successively developed round steel straightness inspection platforms or measuring devices, but these inspection platforms or measuring devices have more or less certain limitations, some of which have relatively low measurement accuracy and some of which have relatively high manufacturing costs.

[0003] After searching, it was found that three literature patents are most relevant to the utility model technology, and the specific contents are described as follows:

[0004] Patent document CN 201721863879.8 discloses a round steel straightness inspection table, which mainly includes a table top, a cushion block, a detection block, a bracket, a fixing block, a bolt, a lifting mechanism, a guide rail, a vertical block, a clamping strip, a ring table and a booster rod. The structural design of the patented device is relatively simple and the detection efficiency is relatively high. Although the patented device uses a detection block, the measurement accuracy of the detection block is not specifically described;

[0005] Patent document CN 202020047059.7 discloses a round steel straightness inspection platform, which mainly includes an operating table, a fixed seat, an inspection rod, a drive motor, a pulley, a conveyor belt, a screw, a slide seat, a guide plate, a buffer mechanism, a support plate, a spring, a guide column and a buffer pad. The design principle of the patented device is relatively ingenious and the detection efficiency is relatively high. Although the patented device has the function of rapid screening, it does not have the function of quantitative detection;

[0006] Patent document CN 202223420393.0 discloses a device for measuring the flatness of a cylindrical generatrix, which mainly includes a base, a cover plate, a micrometer, a measuring rod, a pulley, a head, a support plate, a moving block, a first connecting rod, a second connecting rod, a screw, a rib plate, a connecting column, a screw and a guide rail. Since the patented device uses a pulley and a micrometer, the patented device is easy to use and has high measurement accuracy, but the manufacturing cost is relatively high. Utility Model Content

[0007] In order to overcome one or more problems existing in the prior art, the utility model provides a device for measuring the straightness of round steel based on a double-station. The utility model device is designed with a symmetrical structure. The use of the first bracket can realize the setting of the connecting rod along the horizontal direction; the use of the screw can realize the linkage between the linear bearing and the third bracket, and the combined use of the fourth bracket and the screw can realize the linkage between the second bracket vehicle and the third bracket; the combined use of the connecting rod and the linear bearing can realize the movement of the third bracket according to a predetermined trajectory, and the use of the base plate can realize the movement of the second bracket vehicle according to a predetermined trajectory; the combined use of the two scale segments of the two measuring rods and the two sixth bosses of the third bracket can form two spiral micrometers, so as to accurately measure the straightness of the round steel. Therefore, the use effect of the utility model device is relatively good.

[0008] The technical solution adopted by the utility model to solve its technical problem is as follows.

[0009] The utility model provides a device for measuring the straightness of round steel based on double-station, comprising four first brackets, one second bracket, one third bracket, two fourth brackets, two fifth brackets, a bottom plate, eight linear bearings, two measuring rods, forty-eight screws, four connecting rods, four wheels, four hinges, thirty-two screws and thirty-two nuts;

[0010] The first bracket is composed of two first bodies, a first boss and two second bosses connected together. The first body and the first boss are both rectangular parallelepiped symmetrical structures. The two first bodies are arranged opposite to each other, the first boss is located between the two first bodies, and the two second bosses are simultaneously located on the rear end surface of the first boss; the first body is symmetrically provided with four cylindrical first through holes, and the screw rod is penetrated in the first through holes; the second boss is a cylindrical symmetrical structure, and a cylindrical first groove is provided on the rear end surface of the second boss, and the end of the connecting rod is penetrated in the first groove;

[0011] The second bracket is composed of two second bodies and two third bosses connected together, the second bodies and the third bosses are both rectangular parallelepiped symmetrical structures, the two second bodies are arranged opposite to each other, the two third bosses are arranged opposite to each other and are located between the two second bodies at the same time; the lower end surface of the second body is provided with a rectangular parallelepiped through groove, the wheel is penetrated in the through groove; the left and right sides of the through groove are respectively provided with two cylindrical second through holes, the hinge is penetrated in the second through holes; the third boss is symmetrically provided with four first screw holes, the screws are screwed in the first screw holes;

[0012] The third bracket is composed of four third bodies, two fourth bosses, two fifth bosses and four sixth bosses. The third body, the fourth boss and the fifth boss are all rectangular parallelepiped symmetrical structures. The four third bodies are arranged opposite to each other in pairs, the two fourth bosses are arranged opposite to each other and are located between the four third bodies at the same time, the two fifth bosses are arranged opposite to each other and are located between the four third bodies at the same time, and the four sixth bosses are arranged opposite to each other in pairs and are respectively located on the left and right end faces of the two fifth bosses; the third body is symmetrically provided with two cylindrical A fourth through hole, wherein the eighth boss of the linear bearing is penetrated in the fourth through hole; four second screw holes are evenly opened around the fourth through hole, wherein the screws are screwed in the second screw holes; four third screw holes are symmetrically opened on the fourth boss, wherein the screws are screwed in the third screw holes; the sixth boss is a cylindrical symmetrical structure, wherein the side surface of the sixth boss is evenly marked with fifty grid scales along the circumferential direction; a fourth screw hole is opened at the axis position of the sixth boss, wherein the measuring rod is screwed in the fourth screw hole, and the fourth screw hole also passes through the fifth boss;

[0013] The fourth bracket is composed of a fourth body and two seventh bosses connected together, the fourth body and the seventh boss are both rectangular parallelepiped symmetrical structures, and the two seventh bosses are respectively located on the upper and lower end surfaces of the fourth body; the seventh boss is symmetrically provided with four cylindrical fifth through holes, and the screws are penetrated in the fifth through holes;

[0014] The fifth bracket is composed of two sixth bodies and a ninth boss connected together, the sixth body and the ninth boss are both rectangular parallelepiped symmetrical structures, the two sixth bodies are arranged opposite to each other, and the ninth boss is located between the two sixth bodies; the sixth body is symmetrically provided with four cylindrical eighth through holes, and the screw is passed through the eighth through holes;

[0015] The measuring rod is composed of three parts: a coaxial contact section, a threaded section and a scale section. The contact section is a hemispherical symmetrical structure for contacting round steel; the threaded section is a cylindrical symmetrical structure with threads on the side, for screwing into the fourth screw hole of the third bracket, and the pitch value of the thread is 0.5mm; the scale section is a cylindrical symmetrical structure, and the side of the cylinder is evenly marked with four groups of scales 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 grid value of the staggered scales is 1mm.

[0016] The linear bearing is composed of a fifth body and an eighth boss connected together, and the eighth boss is located on the rear end surface of the fifth body; the fifth body is a rectangular parallelepiped symmetrical structure, and the fifth body is symmetrically provided with four cylindrical sixth through holes, and the screws are penetrated in the sixth through holes; the eighth boss is a cylindrical symmetrical structure, and a cylindrical seventh through hole is provided at the axis position of the eighth boss, and the connecting rod is penetrated in the seventh through hole, and the seventh through hole also runs through the fifth body; a retaining frame, a ball and a retaining ring are also provided in the eighth boss;

[0017] In some embodiments, the base plate is a symmetrical rectangular structure, and the base plate is symmetrically provided with four groups of sixteen cylindrical third through holes, and the screws are passed through the third through holes; two rectangular second grooves are symmetrically provided on the upper end surface of the base plate for guiding the wheels.

[0018] In some embodiments, the connecting rod is a cylindrical symmetrical structure, the two ends of the connecting rod are inserted into the first groove of the first bracket, and the middle portion of the connecting rod is inserted into the seventh through hole of the linear bearing.

[0019] In some embodiments, the nut is screwed onto the threaded end of the screw.

[0020] In some embodiments, the screw, the wheel, the hinge, the threaded rod and the nut are all standard parts.

[0021] The beneficial effects of the utility model are as follows:

[0022] 1) The device of the utility model includes four first brackets, one second bracket, one third bracket, two fourth brackets, two fifth brackets, a base plate, eight linear bearings, two measuring rods, forty-eight screws, four connecting rods, four wheels, four hinges, thirty-two screws and thirty-two nuts. Since the material is common and easy to process and shape, the manufacturing cost of the device of the utility model is relatively low.

[0023] 2) When the device of the utility model is used, two round steels are arranged on the left and right sides of the third bracket, the two measuring rods are rotated to the zero scale position, and the third bracket is horizontally moved to the front end surface, the rear end surface and any middle position of the two round steels (i.e., the positions of point A, point B and point X) along the four connecting rods, and the two measuring rods are respectively screwed in and contacted with the surfaces of the two round steels, and the screwed-in distances △A1, △A2, △B1, △B2, △X1 and △X2 are read respectively, and the two groups of parameters are respectively substituted into the formulas Y1=△X1-(△A1+△B1) / 2 and Y2=△X2-(△A2+△B2) / 2 to calculate the straightness Y1 and Y2 of the two round steels. Therefore, the operation process of the device of the utility model is relatively simple.

[0024] 3) The device of the utility model is designed with a symmetrical structure. The use of the first bracket can realize the setting of the connecting rod in the horizontal direction; the use of the screw can realize the linkage between the linear bearing and the third bracket, and the combined use of the fourth bracket and the screw can realize the linkage between the second bracket trolley and the third bracket; the combined use of the connecting rod and the linear bearing can realize the movement of the third bracket according to a predetermined trajectory, and the use of the base plate can realize the movement of the second bracket trolley according to a predetermined trajectory; the combined use of the two scale segments of the two measuring rods and the two sixth bosses of the third bracket can form two spiral micrometers, thereby accurately measuring the straightness of the round steel. Therefore, the use effect of the device of the utility model is relatively good.

[0025] The device for measuring the straightness of round steel based on double stations provided by the utility model can simultaneously measure the straightness of two round steels, thereby eliminating round steels with unqualified straightness. The utility model has the characteristics of low manufacturing cost, simple operation and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main structure of the device for measuring the straightness of round steel based on double stations provided by the utility model before measurement;

[0027] Figure 2 This is a left-side structural schematic diagram of the device for measuring the straightness of round steel based on a double-station provided by the utility model before measurement;

[0028] Figure 3 A schematic diagram of the top view of the device for measuring the straightness of round steel based on a double-station provided by the utility model before measurement;

[0029] Figure 4 A schematic diagram of the main structure of the device for measuring the straightness of round steel based on double stations provided by the utility model during measurement;

[0030] Figure 5A left-side structural schematic diagram of the partial assembly relationship of the device for measuring the straightness of round steel based on a double-station provided by the utility model;

[0031] Figure 6 A schematic diagram of the main structure of the first bracket provided by the utility model;

[0032] Figure 7 A right side structural schematic diagram of the first bracket provided by the utility model;

[0033] Figure 8 A schematic diagram of the top structure of the first bracket provided by the utility model;

[0034] Fig. 9 This is a schematic diagram of the main structure of the second bracket and the wheel provided by the utility model after assembly;

[0035] Fig.10 This is a left-side structural schematic diagram of the second bracket and the wheel provided by the utility model after being assembled;

[0036] Fig.11 A bottom view schematic diagram of the second bracket and wheels provided by the utility model after being assembled;

[0037] Fig.12 A schematic diagram of the top view of the bottom plate provided by the utility model;

[0038] Fig.13 This is a schematic diagram of the main structure of the third bracket provided by the utility model;

[0039] Fig.14 A left-side structural schematic diagram of the third bracket provided by the utility model;

[0040] Fig.15 A schematic diagram of the top structure of the third bracket provided by the utility model;

[0041] Fig.16 A schematic diagram of the main structure of the fourth bracket provided by the utility model;

[0042] Fig.17 A left-side structural schematic diagram of the fourth bracket provided by the utility model;

[0043] Fig.18 This is a schematic diagram of the main structure of the linear bearing provided by the utility model;

[0044] Fig.19 This is a right side structural schematic diagram of the linear bearing provided by the utility model;

[0045] Fig. 20 This is a left-side structural schematic diagram of the fifth bracket provided by the utility model;

[0046] Fig.21 A schematic diagram of the top structure of the fifth bracket provided by the utility model;

[0047] Fig. 22 A schematic diagram of the main structure of the measuring rod provided by the utility model;

[0048] Fig.23 The utility model is a schematic diagram of the working principle of the device for measuring the straightness of round steel based on double working positions.

[0049] Description of reference numerals: 1-first bracket; 101-first body; 102-first boss; 103-second boss; 104-first through hole; 105-first groove; 2-second bracket; 201-second body; 202-third boss; 203-through groove; 204-second through hole; 205-first screw hole; 3-bottom plate; 301-third through hole; 302-second groove; 4-third bracket; 401-third body; 402-fourth boss; 403-fifth boss; 404-sixth boss; 405-fourth through hole; 406-second screw hole; 407 -third screw hole; 408-fourth screw hole; 5-fourth bracket; 501-fourth body; 502-seventh boss; 503-fifth through hole; 6-linear bearing; 601-fifth body; 602-eighth boss; 603-sixth through hole; 604-seventh through hole; 7-fifth bracket; 701-sixth body; 702-ninth boss; 703-eighth through hole; 8-measuring rod; 801-contact section; 802-threaded section; 803-scale section; 9-screw; 10-connecting rod; 11-wheel; 12-hinge; 13-screw; 14-nut; 15-round steel. DETAILED DESCRIPTION

[0050] The content of the utility model is described in detail below through examples and drawings. The examples are only used to understand the utility model, but are not intended to limit the content of the utility model.

[0051] Combination Figures 1 to 5As shown, the utility model provides a device for measuring the straightness of round steel based on a double-station, which includes four first brackets 1, a second bracket 2, a third bracket 4, two fourth brackets 5, two fifth brackets 7, a base plate 3, eight linear bearings 6, two measuring rods 8, forty-eight screws 9, four connecting rods 10, four wheels 11, four hinges 12, thirty-two screws 13 and thirty-two nuts 14; wherein the openings of the two second grooves 302 of the base plate 3 are arranged upward, and the two second grooves of the base plate 3 are arranged upward. Four wheels 11 roll inside the second bracket 2; the four wheels 11 are inserted into the two through slots 203 of the second bracket 2 and are hinged by four hinges 12; two seventh bosses 502 of the second bracket 5 are arranged outside the front and rear end surfaces of the two third bosses 202 of the second bracket 2, and are connected by eight screws 9; the other two seventh bosses 502 of the two fourth brackets 5 are arranged outside the front and rear end surfaces of the two fourth bosses 402 of the third bracket 4, and are connected by eight screws 9. The eight eighth bosses 602 of the eight linear bearings 6 are inserted into the eight fourth through holes 405 of the third bracket 4, and are connected by thirty-two screws 9; the four middle parts of the four connecting rods 10 are inserted into the eight seventh through holes 604 of the eight linear bearings 6, and the eight ends of the four connecting rods 10 are inserted into the eight first grooves 105 of the four first brackets 1; the four first bodies 101 at the bottom of the four first brackets 1 are arranged on the bottom plate 3, and are connected by sixteen screws 13 and sixteen nuts 14; the four sixth bodies 701 of the two fifth brackets 7 are arranged on the other four first bodies 101 at the top of the four first brackets 1, and are connected by sixteen screws 13 and sixteen nuts 14; the four third bodies 401 of the third bracket 4 are arranged on the two second bodies 201 of the second bracket 2, and the two measuring rods 8 are screwed into the two fourth screw holes 408 of the third bracket 4.

[0052] The assembly process of the device for measuring the straightness of round steel based on double working positions provided by the utility model

[0053] Combination Figures 1 to 22 As shown, firstly, four wheels 11 are inserted into the two through slots 203 of the second bracket 2, and the four axial holes of the four wheels 11 are aligned with the four second through holes 204 of the second bracket 2, and then four hinges 12 are installed in the four groups of aligned through holes, so that the four wheels 11 and the second bracket 2 can be assembled into a second bracket vehicle;

[0054] Then, the eight eighth bosses 602 of the eight linear bearings 6 are inserted into the eight fourth through holes 405 of the third bracket 4, and the thirty-two sixth through holes 603 of the eight linear bearings 6 are aligned with the thirty-two second screw holes 406 of the third bracket 4, and then the thirty-two screws 9 are passed through the thirty-two sixth through holes 603 and screwed into the thirty-two second screw holes 406, so that the eight linear bearings 6 and the third bracket 4 can be assembled;

[0055] Then, the four first brackets 1 are arranged opposite to each other in pairs, and then the four connecting rods 10 are inserted into the eight seventh through holes 604 of the eight linear bearings 6, and then the eight ends of the four connecting rods 10 are inserted into the eight first grooves 105 of the four first brackets 1. In this way, the eight linear bearings 6, the four connecting rods 10 and the four first brackets 1 can be assembled;

[0056] Then, the opening of the second groove 302 of the bottom plate 3 is placed upward on the mounting platform, and then the four first brackets 1 are placed on the bottom plate 3 at the same time, and then the second bracket vehicle is placed on the bottom plate 3, and the four wheels 11 are placed in the two second grooves 302 of the bottom plate 3, and then the sixteen first through holes 104 of the four first brackets 1 at the bottom are aligned with the sixteen third through holes 301 of the bottom plate 3, and then sixteen screw rods 13 are passed through the sixteen groups of aligned through holes, and then the sixteen nuts 14 are screwed on the threaded ends of the sixteen screw rods 13, so that the second bracket vehicle, the bottom plate 3 and the four first brackets 1 can be assembled;

[0057] At this time, the four third bodies 401 of the third bracket 4 must be arranged on the two second bodies 201 of the second bracket 2, and then the seventh boss 502 on which the fourth bracket 5 is located is arranged outside the rear end surface of the fourth boss 402 of the third bracket 4, and the four fifth through holes 503 on which the fourth bracket 5 is located are aligned with the four third screw holes 407 of the third bracket 4, and then the four screws 9 are passed through the four fifth through holes 503 and screwed into the four third screw holes 407, so that the fourth bracket 5 and the third bracket 4 can be assembled;

[0058] Then, the seventh boss 502 on which the other fourth bracket 5 is located is arranged outside the front end surface of the fourth boss 402 of the third bracket 4, and the four fifth through holes 503 on which the fourth bracket 5 is located are aligned with the four third screw holes 407 of the third bracket 4, and then the four screws 9 are passed through the four fifth through holes 503 and screwed into the four third screw holes 407, so that the other fourth bracket 5 and the third bracket 4 can be assembled;

[0059] Then, align the eight first screw holes 205 of the second bracket 2 and the eight fifth through holes 503 at the lower position of the two fourth brackets 5, and then pass the eight screws 9 through the eight fifth through holes 503 and screw them into the eight first screw holes 205, so that the two fourth brackets 5 and the second bracket 2 can be assembled;

[0060] Then, the four sixth bodies 701 of the two fifth brackets 7 are arranged on the four first bodies 101 on which the four first brackets 1 are located, and the sixteen eighth through holes 703 of the two fifth brackets 7 are aligned with the sixteen first through holes 104 on which the four first brackets 1 are located, and then sixteen screw rods 13 are passed through the sixteen groups of aligned through holes, and then sixteen nuts 14 are screwed onto the threaded ends of the sixteen screw rods 13, so that the two fifth brackets 7 and the four first brackets 1 can be assembled;

[0061] Finally, the two measuring rods 8 are screwed into the two fourth screw holes 408 of the third bracket 4. In this way, the whole device is assembled and can be put into use.

[0062] The working principle of the device for measuring the straightness of round steel based on double working positions provided by the utility model

[0063] Combination Fig.23 As shown, for the convenience of description, the measuring rod 8 on the left is set as ①, and the round steel 15 on the left is set as round steel ① accordingly. Similarly, the measuring rod 8 on the right is set as ②, and the round steel 15 on the right is set as round steel ② accordingly.

[0064] Combination Fig.23As shown, the contact section 801 of the measuring rod 8 is hemispherical, and the measuring rod 8 and the round steel 15 maintain a circumscribed relationship during measurement; the tangent points of the front end face and the rear end face of the round steel 15 are respectively set as point A and point B, and a generatrix AB can be obtained by connecting point A and point B, and point X is set as a moving point on the generatrix AB, and the distances from the measuring rod 8 located at the zero scale position to the round steel 15 at the positions of point A, point B and point X are respectively set as △A, △B and △X, that is, the measuring rod 8 located at the zero scale position is rotated into the distances of △A, △B and △X at the positions of point A, point B and point X, respectively, and can achieve a circumscribed relationship with the round steel 15;

[0065] The average distance (△A+△B) / 2 measured by the measuring rod 8 at the zero scale position at point A and point B is used as the reference distance from the measuring rod 8 at the zero scale position to the round steel 15, and the straightness of the round steel 15 is set to Y, Y=△X-(△A+△B) / 2; by continuously measuring the screw-in distance △X of the round steel 15 at multiple measuring positions along the generatrix AB, the overall straightness of the round steel 15 along the generatrix AB can be obtained; the judgment principle for the measurement result: if Y>0, it means that the surface of the round steel 15 is concave at the point X position; if Y=0, it means that the surface of the round steel 15 is flat at the point X position; if Y<0, it means that the surface of the round steel 15 is convex at the point X position;

[0066] Combination Fig.23 As shown, the combined use of the two scale segments 803 of the two measuring rods 8 and the two sixth bosses 404 of the third bracket 4 can form two screw micrometers, and the measuring accuracy of the two screw micrometers is 0.01mm. The reasoning process is: since the pitch value of the thread of the measuring rod 8 is 0.5mm, that is, the axial distance moved by the measuring rod 8 in the fourth screw hole 408 is 0.5mm for every rotation of the measuring rod 8. Since the side surface of the sixth boss 404 is evenly marked with fifty grid scales along the circumferential direction, therefore, the axial distance moved by the measuring rod 8 in the fourth screw hole 408 is 0.01mm for every rotation of the measuring rod 8 by one grid scale.

[0067] The use process of the device for measuring the straightness of round steel based on double working positions provided by the utility model

[0068] Combination Figures 1 to 3 As shown, firstly, the two round steels 15 are arranged on the left and right sides of the third bracket 4. At this time, the two measuring rods 8 and the two round steels 15 must be aligned;

[0069] Then, the two measuring rods 8 are rotated to the zero scale position, and then the third bracket 4 is horizontally moved along the four connecting rods 10 to the front end surface of the two round steels 15 (the position of point A), and then the two measuring rods 8 are screwed in respectively. When the two contact sections 801 of the two measuring rods 8 respectively contact the surfaces of the two round steels 15, the screwing in of the two measuring rods 8 is stopped; and then the screwing-in distances △A1 and △A2 of the two measuring rods 8 are read;

[0070] Then, the two measuring rods 8 are rotated to the zero scale position, and then the third bracket 4 is horizontally moved along the four connecting rods 10 to the rear end surface of the two round steels 15 (the position of point B), and then the two measuring rods 8 are screwed in respectively, and when the two contact sections 801 of the two measuring rods 8 respectively contact the surfaces of the two round steels 15, the screwing in of the two measuring rods 8 is stopped; and then the screwing in distances △B1 and △B2 of the two measuring rods 8 are read;

[0071] Then, the two measuring rods 8 are rotated to the zero scale position, and then the third bracket 4 is horizontally moved to any position of the two round steels 15 (the position where point X is located) along the four connecting rods 10, and then the two measuring rods 8 are screwed in respectively, and when the two contact sections 801 of the two measuring rods 8 respectively contact the surfaces of the two round steels 15, the screwing in of the two measuring rods 8 is stopped; and then the screwing in distances △X1 and △X2 of the two measuring rods 8 are read;

[0072] Then, the two sets of measured parameters are respectively substituted into the calculation formula Y=△X-(△A+△B) / 2. In this way, the straightness Y of the two round steels 15 at the position where point X is located can be calculated; for the round steel ① on the left, the straightness Y1 of the round steel ① at the position where point X is located is Y1=△X1-(△A1+△B1) / 2 in the horizontal direction; for the round steel ② on the right, the straightness Y2 of the round steel ② at the position where point X is located is Y2=△X2-(△A2+△B2) / 2 in the horizontal direction.

[0073] Supplementary explanation: The device for measuring the straightness of round steel based on a double-station structure provided by the utility model is designed with a symmetrical structure. First, according to the diameter specification of the round steel, the length specification of the round steel and the setting height of the round steel, multiple specifications of the device of the utility model should be designed and manufactured to match it. In this way, for round steel under specific conditions, rapid centering and measurement can be achieved; the zero scale position refers to the position when the initial scale lines of the two measuring rods and the two sixth bosses of the third bracket are aligned; since the device of the utility model is designed with a double-station structure, this requires that the diameters of the two round steels are equal and the lengths are equal, and the two ends of the two round steels are aligned, so as to improve work efficiency.

[0074] It can be seen from the embodiments that the device for measuring the straightness of round steel based on a double-station provided by the utility model can simultaneously measure the straightness of two round steels, thereby eliminating round steels with unqualified straightness. The utility model has the characteristics of low manufacturing cost, simple operation and good use effect.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein.

Claims

1. A device for measuring the straightness of round steel based on a double-station, characterized in that: The device for measuring the straightness of round steel based on a double-station comprises: four first brackets (1), one second bracket (2), one third bracket (4), two fourth brackets (5), two fifth brackets (7), a base plate (3), eight linear bearings (6), two measuring rods (8), forty-eight screws (9), four connecting rods (10), four wheels (11), four hinges (12), thirty-two screws (13) and thirty-two nuts (14), wherein: The first bracket (1) is composed of two first bodies (101), a first boss (102) and two second bosses (103) connected together; the first body (101) and the first boss (102) are both rectangular parallelepiped symmetrical structures; the two first bodies (101) are arranged opposite to each other; the first boss (102) is located between the two first bodies (101); and the two second bosses (103) are simultaneously located at the rear end surface of the first boss (102); the first body (101) is symmetrically provided with four cylindrical first through holes (104); the screw rod (13) is passed through the first through holes (104); the second boss (103) is a cylindrical symmetrical structure; the rear end surface of the second boss (103) is provided with a cylindrical first groove (105); the end of the connecting rod (10) is passed through the first groove (105); The second bracket (2) is composed of two second bodies (201) and two third bosses (202) connected together. The second bodies (201) and the third bosses (202) are both rectangular parallelepiped symmetrical structures. The two second bodies (201) are arranged opposite to each other, and the two third bosses (202) are arranged opposite to each other and are simultaneously located between the two second bodies (201). The lower end surface of the second body (201) is provided with a rectangular parallelepiped through groove (203), and the wheel (11) is penetrated in the through groove (203). The left and right sides of the through groove (203) are respectively provided with two cylindrical second through holes (204), and the hinge (12) is penetrated in the second through holes (204); the third boss (202) is symmetrically provided with four first screw holes (205), and the screws (9) are screwed in the first screw holes (205); The third bracket (4) is composed of four third bodies (401), two fourth bosses (402), two fifth bosses (403) and four sixth bosses (404) connected together; the third body (401), the fourth boss (402) and the fifth boss (403) are all rectangular parallelepiped symmetrical structures; the four third bodies (401) are arranged opposite to each other in pairs; the two fourth bosses (402) are arranged opposite to each other and are simultaneously located between the four third bodies (401); the two fifth bosses (403) are arranged opposite to each other and are simultaneously located between the four third bodies (401); the four sixth bosses (404) are arranged opposite to each other in pairs and are respectively located on the left and right end faces of the two fifth bosses (403); the third body (401) is symmetrically provided with two cylindrical fourth through holes (404). 5), the eighth boss (602) of the linear bearing (6) is penetrated in the fourth through hole (405); four second screw holes (406) are evenly arranged around the fourth through hole (405), and the screws (9) are screwed into the second screw holes (406); four third screw holes (407) are symmetrically arranged on the fourth boss (402), and the screws (9) are screwed into the third screw holes (407); the sixth boss (404) is a cylindrical symmetrical structure, and fifty grid scales are evenly marked on the side surface of the sixth boss (404) along the circumferential direction; a fourth screw hole (408) is arranged at the axial position of the sixth boss (404), and the measuring rod (8) is screwed into the fourth screw hole (408), and the fourth screw hole (408) also passes through the fifth boss (403); The fourth bracket (5) is composed of a fourth body (501) and two seventh bosses (502) connected together. The fourth body (501) and the seventh boss (502) are both rectangular parallelepiped symmetrical structures. The two seventh bosses (502) are respectively located on the upper and lower end surfaces of the fourth body (501). The seventh boss (502) is symmetrically provided with four cylindrical fifth through holes (503), and the screws (9) are inserted into the fifth through holes (503). The fifth bracket (7) is composed of two sixth bodies (701) and a ninth boss (702) connected together; the sixth body (701) and the ninth boss (702) are both rectangular parallelepiped symmetrical structures; the two sixth bodies (701) are arranged opposite to each other, and the ninth boss (702) is located between the two sixth bodies (701); the sixth body (701) is symmetrically provided with four cylindrical eighth through holes (703), and the screw rod (13) is passed through the eighth through hole (703); The measuring rod (8) is composed of three parts connected together, namely, a coaxial contact section (801), a threaded section (802) and a scale section (803); the contact section (801) is a hemispherical symmetrical structure, used for contacting round steel; the threaded section (802) is a cylindrical symmetrical structure with a thread on the side, used for screwing the fourth screw hole (408) of the third bracket (4), the pitch value of the thread is 0.5 mm; the scale section (803) is a cylindrical symmetrical structure, the side of the cylinder is evenly marked with four groups of scales along the circumferential direction, each group of scales is composed of two adjacent upper and lower rows of misaligned scales, the misalignment value of the two rows of misaligned scales is 0.5 mm, and the minimum grid value of the misaligned scales is 1 mm; The linear bearing (6) is composed of a fifth body (601) and an eighth boss (602) connected together, and the eighth boss (602) is located at the rear end surface of the fifth body (601); the fifth body (601) is a rectangular parallelepiped symmetrical structure, and the fifth body (601) is symmetrically provided with four cylindrical sixth through holes (603), and the screws (9) are penetrated through the sixth through holes (603); the eighth boss (602) is a cylindrical symmetrical structure, and a cylindrical seventh through hole (604) is provided at the axial position of the eighth boss (602), and the connecting rod (10) is penetrated through the seventh through hole (604), and the seventh through hole (604) also runs through the fifth body (601); a retaining frame, a ball and a retaining ring are also provided inside the eighth boss (602).

2. The device for measuring the straightness of round steel based on double stations according to claim 1 is characterized in that: The bottom plate (3) is a rectangular parallelepiped symmetrical structure, and the bottom plate (3) is symmetrically provided with four groups of sixteen cylindrical third through holes (301), and the screw rods (13) are passed through the third through holes (301); the upper end surface of the bottom plate (3) is symmetrically provided with two rectangular parallelepiped second grooves (302) for guiding the wheel (11).

3. The device for measuring the straightness of round steel based on double stations according to claim 1 is characterized in that: The connecting rod (10) is a cylindrical symmetrical structure, the two ends of the connecting rod (10) are inserted into the first groove (105) of the first bracket (1), and the middle part of the connecting rod (10) is inserted into the seventh through hole (604) of the linear bearing (6).

4. The device for measuring the straightness of round steel based on double stations according to claim 1 is characterized in that: The threaded end of the screw rod (13) is screwed with the nut (14).

5. The device for measuring the straightness of round steel based on double stations according to claim 1 is characterized in that: The screw (9), the wheel (11), the hinge (12), the screw rod (13) and the nut (14) are all standard parts.

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