Device for detecting straightness of cold-rolled seamless steel pipe

Abstract

The utility model discloses a straightness detection device for a cold-rolled seamless steel tube, and belongs to the technical field of cold-rolled seamless steel tube detection. A cold-rolled seamless steel pipe straightness detection device comprises a detection table, a moving frame parallel to a cold-rolled seamless steel pipe to be detected is installed above the detection table, a moving seat is installed on the moving frame, two sliding blocks are installed on the moving seat, and side frames which are oppositely arranged are installed on the two sliding blocks respectively. The side frame is provided with an arc-shaped plate, and the arc-shaped plate is provided with a plurality of detection assemblies. According to the utility model, the plurality of sleeves are arranged on the arc-shaped plate, the sleeves face the clamping center of the steel pipe, the ejector rods are connected to the sleeves through the springs, the distance sensors are arranged on the sleeves, and the rollers at the top ends of the ejector rods can move on the plain line of the steel pipe when the moving seat moves on the moving frame; a plurality of distance sensors can record the change condition of the distance from the end part of the ejector rod, so that the straightness of the steel pipe can be conveniently analyzed and confirmed.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled seamless steel pipe detection, and more specifically to a cold-rolled seamless steel pipe straightness detection device. Background Art

[0002] Cold-rolled precision seamless steel pipe is a seamless steel pipe with high dimensional accuracy and good surface finish used for precision mechanical structures, hydraulic equipment or steel sleeves. The cold processing methods of steel pipes include cold rolling, cold drawing and spinning. It is mainly used to produce small diameter, precision, thin-walled and high-strength pipes. Cold-rolled steel pipes have smooth surfaces, precise dimensions, good performance, multiple cross-sectional shapes, and high metal utilization. They are widely used in national defense, military industry, machinery, mining, chemical industry, electric power, agricultural machinery and other fields. The cold-rolled steel pipe process is developed on the basis of the cold-drawn steel pipe process. It solves the problems of small deformation per cold drawing, many passes, high metal consumption and poor deformation conditions.

[0003] Cold-rolled seamless steel pipes are used in many important fields and are an important pipe material required for the manufacture of precision equipment. Cold-rolled seamless steel pipes need to be tested for straightness. If the surface straightness error is too large, it will affect the performance of the steel pipe. The straightness needs to be judged based on the plain line on the surface of the steel pipe during testing. The existing cold-rolled seamless steel pipe straightness detection device has a small detection coverage area for cold-rolled seamless steel pipes, and it takes multiple times to record the overall straightness of the outer wall of the steel pipe. The detection process will produce certain errors, which will affect the straightness detection structure.

[0004] The existing cold-rolled seamless steel pipe straightness detection process has the above problems. In view of this, we propose a cold-rolled seamless steel pipe straightness detection device. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The utility model aims to provide a cold-rolled seamless steel pipe straightness detection device to solve the problem in the background technology that the error of the existing straightness detection device can only detect a certain line separately.

[0007] 2. Technical solution

[0008] A cold-rolled seamless steel pipe straightness detection device comprises a detection platform, a movable frame parallel to the cold-rolled seamless steel pipe to be detected is installed above the detection platform, a movable seat is installed on the movable frame, two sliders are installed on the movable seat, and oppositely arranged side frames are respectively installed on the two sliders, an arc plate is installed on the side frame, and a plurality of detection components are arranged on the arc plate, and the detection component comprises a sleeve fixedly connected to the arc plate, a spring is installed inside the sleeve, a push rod contacting the plain line on the cold-rolled seamless steel pipe to be detected is slidably connected to the sleeve, the tail end of the push rod abuts against the spring, and a distance sensor for detecting the distance between the sleeve and the push rod is installed on the sleeve.

[0009] Preferably, the end of the push rod is rotatably connected to a roller.

[0010] Preferably, four connecting frames are installed on the side frame, and guide wheels are installed at the ends of the connecting frames.

[0011] Preferably, a fixed frame is installed on the top of the inspection table, a movable frame is provided on one side of the fixed frame, a clamp for fixing the cold-rolled seamless steel pipe is provided between the fixed frame and the movable frame, a guide rail is opened on the top of the inspection table, and the movable frame is slidably connected to the guide rail.

[0012] Preferably, brackets are installed on both sides of the top of the detection platform, and lifting slots are opened on the brackets, and the movable frame is slidably connected to the lifting slots.

[0013] Preferably, a positioning seat is installed in the middle of the movable seat, a bidirectional screw is installed in the middle of the positioning seat, and two sides of the bidirectional screw are respectively screwed to two sliding blocks.

[0014] Preferably, a gear is provided in the middle of the bidirectional screw, and a rack is provided on the movable seat, and the rack is meshed with the gear.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The utility model arranges a plurality of sleeves mounted on an arc-shaped plate, the sleeves are arranged toward the clamping center of the steel pipe, the mandrel is connected to the sleeve by a spring, the distance sensor is installed on the sleeve, and when the moving seat moves on the moving frame, the roller at the top of the mandrel will move on the plain line of the steel pipe. The plurality of distance sensors can record the change of the distance from the end of the mandrel, so as to facilitate the analysis and confirmation of the straightness of the steel pipe.

[0018] 2. The utility model is provided with two sliders connected by a bidirectional screw, the sliders are fixedly connected to the side frames, and the connecting frames are installed on both sides of the bottom end of the side frames. The guide wheels on the two side frames can contact the outer wall of the steel pipe respectively, so that the roller at the end of the top rod can stably contact the outer wall of the steel pipe, which can reduce the error in the straightness detection of the cold-rolled seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A front perspective cutaway view of

[0021] Figure 3 For the utility model Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 For the utility model Figure 3 The enlarged view of point B in the middle;

[0023] Figure 5 For the utility model Figure 3 Enlarged view of point C in the middle.

[0024] Explanation of the numbers in the figure: 1. Testing table; 2. Moving frame; 3. Moving seat; 4. Slider; 5. Side frame; 6. Arc plate; 7. Sleeve; 8. Spring; 9. Push rod; 10. Distance sensor; 11. Roller; 12. Connecting frame; 13. Guide wheel; 14. Fixed frame; 15. Movable frame; 16. Clamp; 17. Guide rail; 18. Bracket; 19. Lifting slot; 20. Positioning seat; 21. Bidirectional screw; 22. Gear; 23. Rack. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] See also Figure 1-5 ,The utility model provides a technical solution:

[0029] A cold-rolled seamless steel pipe straightness detection device comprises a detection platform 1, a moving frame 2 parallel to the cold-rolled seamless steel pipe to be detected is installed above the detection platform 1, a moving seat 3 is installed on the moving frame 2, two sliders 4 are installed on the moving seat 3, and side frames 5 arranged oppositely are installed on the two sliders 4 respectively, and an arc plate 6 is installed on the side frame 5, and a plurality of detection components are arranged on the arc plate 6, and the detection component comprises a sleeve 7 fixedly connected to the arc plate 6, a spring 8 is installed inside the sleeve 7, a push rod 9 contacting the plain line on the cold-rolled seamless steel pipe to be detected is slidably connected to the sleeve 7, and the tail end of the push rod 9 abuts against the spring 8, and a distance sensor 10 for detecting the distance between the sleeve 7 and the push rod 9 is installed, and the plain line of the cold-rolled seamless steel pipe can be determined according to the distance curve recorded by the distance sensor 10, and the straightness of the cold-rolled seamless steel pipe can be analyzed according to the change of the plain line.

[0030] The utility model is provided with a detection platform 1, a moving frame 2 is installed above the detection platform 1, a moving seat 3 is slidably connected to the moving frame 2, two sliders 4 are slidably connected to the moving seat 3, the moving direction of the two sliders 4 is perpendicular to the moving direction of the moving seat 3, a side frame 5 is fixedly connected to the slider 4, an arc plate 6 is installed on the side frame 5, a detection component is installed on the arc plate 6, a sleeve 7 is fixedly connected to the arc plate 6, a spring 8 is located inside the sleeve 7, a push rod 9 is slidably connected to the sleeve 7, the end of the push rod 9 contacts the outer wall of the steel pipe, a distance sensor 10 is installed on the side wall of the sleeve 7, the push rod 9 moves on the moving frame 2 to make the push rod 9 move along the plain line direction on the steel pipe, the distance sensor 10 can be directly purchased from the market, the distance sensor 10 can detect the error of the distance from the end of the push rod 9, and the straightness of the steel pipe can be detected conveniently.

[0031] Specifically, the end of the push rod 9 is rotatably connected to a roller 11; by providing the roller 11, the roller 11 is installed at the end of the push rod 9, so that the roller 11 can contact the steel pipe instead of the push rod 9, and the friction between the push rod 9 and the steel pipe can be reduced.

[0032] Furthermore, four connecting frames 12 are installed on the side frame 5, and guide wheels 13 are installed at the ends of the connecting frames 12. The connecting frames 12 are installed on both sides of the bottom end of the side frame 5, and the guide wheels 13 are installed at the ends of the connecting frames 12. The guide wheels 13 can directly contact the outer wall of the steel pipe to reduce the error of the distance sensor 10.

[0033] It is worth mentioning that a fixed frame 14 is installed on the top of the testing platform 1, a movable frame 15 is provided on one side of the fixed frame 14, a clamp 16 for fixing the cold-rolled seamless steel pipe is provided between the fixed frame 14 and the movable frame 15, a guide rail 17 is opened on the top of the testing platform 1, and the movable frame 15 is slidably connected with the guide rail 17, the fixed frame 14 is installed on the top of the testing platform 1, the movable frame 15 is installed on one side of the fixed frame 14, and the clamp 16 is respectively installed on the fixed frame 14 and the movable frame 15. The clamp 16 on the fixed frame 14 and the movable frame 15 can clamp and fix the steel pipe, and the guide rail 17 can facilitate the movement of the movable frame 15 and the replacement of the fixing box of the steel pipe.

[0034] It is worth noting that brackets 18 are installed on both sides of the top of the testing platform 1, and a lifting groove 19 is opened on the bracket 18. The mobile frame 2 is slidably connected with the lifting groove 19. The bracket 18 is installed on both sides of the top of the testing platform 1, and the lifting groove 19 is opened on the bracket 18. The mobile frame 2 is installed on two brackets 18, and the mobile frame 2 is slidably connected with the two lifting grooves 19, which is convenient for adjustment according to different diameters of the sensory organs to avoid external interference.

[0035] In addition, a positioning seat 20 is installed in the middle of the moving seat 3, and a bidirectional screw 21 is installed in the middle of the positioning seat 20. The two sides of the bidirectional screw 21 are respectively screwed with two sliders 4. The positioning seat 20 is installed in the middle of the moving seat 3, and the bidirectional screw 21 is installed on the positioning seat 20. The bidirectional screw 21 is screwed with the two sliders 4. The rotation of the bidirectional screw 21 can drive the two sliders 4 to move closer or farther synchronously, so that the guide wheel 13 at the end of the connecting frame 12 can stably contact the outer wall of the steel pipe.

[0036] It has to be said that a gear 22 is provided in the middle of the bidirectional screw 21, and a rack 23 is provided on the movable seat 3. The rack 23 is meshed with the gear 22. The gear 22 is installed on the bidirectional screw 21, and the rack 23 is installed on the movable seat 3. The rack 23 is meshed with the gear 22. The sliding of the rack 23 can drive the gear 22 to rotate, thereby facilitating the rotation of the bidirectional screw 21 and facilitating the fixation of the steel pipe.

[0037] Working principle: first, pull open the movable frame 15, and fix the cold-rolled seamless steel pipe to be tested for straightness between the fixed frame 14 and the clamp 16 on the movable frame 15. After the fixation is completed, the movable seat 3 moves to one end of the steel pipe, and then the height of the side frame 5 is adjusted by sliding the movable frame 2 in the lifting groove 19. When the side frame 5 moves to both sides of the steel pipe, the sliding rack 23, the rack 23 rotates with the gear 22 and the bidirectional screw 21 thereon, and the bidirectional screw 21 brings the two sliders 4 close synchronously, so that the guide wheel 13 on the side frame 5 is stably in contact with the outside of the steel pipe. At this time, the roller 11 on the push rod 9 can contact the outer wall of the steel pipe. After the placement is completed, the movable seat 3 slides on the movable frame 2. During this process, the distance sensor 10 keeps detecting the distance change between the push rod 9 and it. After the detection is completed, the straightness of the cold-rolled seamless steel pipe is analyzed based on the distance change data in this process.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cold-rolled seamless steel pipe straightness detection device, comprising a detection table (1), characterized in that: A moving frame (2) parallel to the cold-rolled seamless steel pipe to be tested is installed above the testing platform (1), a moving seat (3) is installed on the moving frame (2), two sliders (4) are installed on the moving seat (3), and the two sliders (4) are respectively installed with side frames (5) arranged opposite to each other, an arc plate (6) is installed on the side frame (5), and a plurality of testing components are arranged on the arc plate (6), and the testing components include a sleeve (7) fixedly connected to the arc plate (6), a spring (8) is installed inside the sleeve (7), a push rod (9) in sliding connection with the plain line on the cold-rolled seamless steel pipe to be tested is provided on the sleeve (7), the tail end of the push rod (9) is in contact with the spring (8), and a distance sensor (10) for detecting the distance between the sleeve (7) and the push rod (9) is installed on the sleeve (7).

2. A cold-rolled seamless steel pipe straightness detection device according to claim 1, characterized in that: The end of the push rod (9) is rotatably connected to a roller (11).

3. The cold-rolled seamless steel pipe straightness detection device according to claim 1, characterized in that: Four connecting frames (12) are installed on the side frame (5), and guide wheels (13) are installed at the ends of the connecting frames (12).

4. A cold-rolled seamless steel pipe straightness detection device according to claim 3, characterized in that: A fixed frame (14) is installed on the top of the inspection platform (1), a movable frame (15) is provided on one side of the fixed frame (14), a clamp (16) for fixing the cold-rolled seamless steel pipe is provided between the fixed frame (14) and the movable frame (15), a guide rail (17) is provided on the top of the inspection platform (1), and the movable frame (15) is slidably connected to the guide rail (17).

5. A cold-rolled seamless steel pipe straightness detection device according to claim 4, characterized in that: Brackets (18) are installed on both sides of the top of the detection platform (1), and a lifting groove (19) is provided on the bracket (18). The movable frame (2) is slidably connected to the lifting groove (19).

6. A cold-rolled seamless steel pipe straightness detection device according to claim 5, characterized in that: A positioning seat (20) is installed in the middle of the movable seat (3), a bidirectional screw rod (21) is installed in the middle of the positioning seat (20), and two sides of the bidirectional screw rod (21) are respectively screw-connected with two sliders (4).

7. A cold-rolled seamless steel pipe straightness detection device according to claim 6, characterized in that: A gear (22) is provided in the middle of the bidirectional screw (21), and a rack (23) is provided on the movable seat (3), and the rack (23) is meshed with the gear (22).

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