Device for detecting straightness of inner hole of seamless tube

Abstract

The seamless tube inner hole straightness detection device comprises a supporting platform used for supporting a detected seamless tube, the detected seamless tube is positioned and supported on the upper plane of the supporting platform, a go gauge is arranged in an inner hole of the detected seamless tube in a matched mode, and a winch is arranged on the outer side of the right end of the supporting platform. And the end part of a steel wire rope on the winch is detachably connected with the right end of the go gauge, and when the go gauge is smoothly pulled out of the measured seamless tube by the winch, the straightness of the inner hole of the measured seamless tube meets the requirement. According to the utility model, when the go gauge is smoothly pulled out of the to-be-detected seamless tube by the winch, the straightness of the inner hole of the to-be-detected seamless tube is considered to meet the requirement, the problems of high labor intensity and low detection efficiency existing in manual detection of the seamless tube are solved, the detection precision is high, the semi-automatic detection structure greatly reduces the labor intensity of manual detection, the structure is simple, and the cost is low. In the whole detection process, the detection precision of the straightness of the inner hole of the seamless tube is slightly influenced by the structural precision, and the device has high popularization and use values.

Description

Technical Field

[0001] The utility model belongs to the technical field of seamless pipe detection, and in particular relates to a device for detecting the straightness of the inner hole of a seamless pipe. Background Art

[0002] With the development and progress of society, the mechanical manufacturing industry has an increasing demand for product quality. In the corresponding standards, the geometric tolerances of each part in the mechanical products are clearly stipulated. Among them, seamless pipes are more and more widely used in the machinery industry. The detection of the straightness of the inner hole has always been difficult. The current straightness detection methods mainly include manual detection, which has low efficiency and high human operation. If a mechanical structure is used to detect the straightness of the inner hole, due to the influence of the accuracy of the mechanical structure, the error of the mechanical detection structure directly affects the detection accuracy of the straightness of the inner hole of the seamless pipe. Therefore, in view of the above problems, it is necessary to improve on the basis of the existing manual detection method. Utility Model Content

[0003] The technical problem solved by the utility model is: to provide a seamless pipe inner hole straightness detection device, by arranging a support platform for positioning and supporting the seamless pipe to be tested on the front side of the winch, and connecting the through gauge adapted to the seamless pipe to be tested with the wire rope of the winch, when the through gauge is smoothly pulled out of the seamless pipe to be tested by the winch, it is deemed that the straightness of the inner hole of the seamless pipe to be tested meets the requirements, which solves the problems of high labor intensity and low detection efficiency in manual detection of seamless pipes, has high detection accuracy, and the semi-automatic detection structure greatly reduces the labor intensity of manual detection, has a simple structure, and the detection accuracy of the seamless pipe inner hole straightness is less affected by the structural accuracy during the entire detection process, and has a high value for promotion and use.

[0004] The technical solution adopted by the utility model: a seamless pipe inner hole straightness detection device comprises a supporting platform for supporting the seamless pipe to be tested, the seamless pipe to be tested is positioned and supported on the upper plane of the supporting platform, and a through gauge is adapted to the inner hole of the seamless pipe to be tested, a winch is provided on the outer side of the right end of the supporting platform, and the end of the wire rope on the winch is detachably connected to the right end of the through gauge, and when the through gauge is smoothly pulled out of the seamless pipe to be tested by the winch, it is deemed that the straightness of the inner hole of the seamless pipe to be tested meets the requirement.

[0005] Wherein, a tension sensor for detecting the tension of the wire rope is provided on the wire rope, and the winch stops when the tension detected by the tension sensor is greater than the set pressure.

[0006] Furthermore, the through gauge is a stepped shaft structure with a middle diameter larger than two end diameters, a connecting ring is fixed on the end face of the small diameter section of the through gauge, and the wire rope is hung on the connecting ring at the corresponding end of the through gauge.

[0007] Furthermore, a positioning block is fixed on the right end of the plane on the support platform, and the right end of the seamless pipe to be measured abuts against the corresponding end side wall of the positioning block. A position-adjustable sliding block is adapted and connected to the support platform, and the sliding block abuts against the left end of the seamless pipe to be measured.

[0008] Furthermore, the sliding block is a grooved plate with its opening facing downward and fastened on the supporting platform. A handwheel bolt with an inner end pressed against the corresponding side wall of the supporting platform is threadedly connected on one side wall of the sliding block, and the position of the sliding block is adjusted according to the length of the seamless pipe being measured.

[0009] Furthermore, a height-adjustable wire rope roller is provided between the winch and the supporting platform.

[0010] The advantages of this utility model compared with the prior art:

[0011] 1. This technical solution sets a support platform for positioning and supporting the seamless pipe to be tested on the front side of the winch, and connects the through gauge adapted to the seamless pipe to be tested with the wire rope of the winch. When the through gauge is smoothly pulled out of the seamless pipe to be tested by the winch, it is considered that the straightness of the inner hole of the seamless pipe to be tested meets the requirements, thereby solving the problems of high labor intensity and low detection efficiency in manual detection of seamless pipes, and achieving high detection accuracy.

[0012] 2. This technical solution adopts mechanized pulling in the whole process of the through gauge adapted to the inside of the seamless pipe to be tested passing through the inner hole of the seamless pipe to be tested, without manual operation. The semi-automatic detection structure greatly reduces the labor intensity of manual detection;

[0013] 3. This technical solution realizes real-time detection of the tension of the wire rope by setting a tension sensor on the wire rope, which provides conditions for judging whether the through gauge can smoothly pass through the tested seamless pipe, and ensures the reliability and safety of the detection process;

[0014] 4. This technical solution has a simple structure, novel design, and convenient and quick operation. During the entire detection process, the straightness detection accuracy of the seamless pipe inner hole is less affected by the structural accuracy, and has a high value for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiment of the present utility model Figure 1, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0019] Seamless pipe inner hole straightness detection device, such as Figure 1 As shown, it includes a supporting platform 1 for supporting the seamless pipe 2 to be tested, the seamless pipe 2 to be tested is positioned and supported on the upper plane of the supporting platform 1, and the through gauge 4 is adapted to the inner hole of the seamless pipe 2 to be tested, a winch 3 is provided on the outer side of the right end of the supporting platform 1, and the end of the wire rope 3-1 on the winch 3 is detachably connected to the right end of the through gauge 4, and when the through gauge 4 is smoothly pulled out of the seamless pipe 2 to be tested by the winch 3, it is considered that the straightness of the inner hole of the seamless pipe 2 to be tested meets the requirements; in the above structure, by arranging a supporting platform 1 for positioning and supporting the seamless pipe 2 to be tested on the front side of the winch 3, and connecting the through gauge 4 adapted to the seamless pipe 2 to the wire rope 3-1 of the winch 3, when the through gauge 4 is smoothly pulled out of the seamless pipe 2 to be tested by the winch 3, it is considered that the straightness of the inner hole of the seamless pipe 2 to be tested meets the requirements, the problems of high labor intensity and low detection efficiency in manual detection of seamless pipes are solved, and the detection accuracy is high;

[0020] In order to determine whether the through gauge 4 is stuck due to the straightness of the seamless pipe 2 being tested, a tension sensor for detecting the tension of the wire rope 3-1 is provided on the wire rope 3-1, and the winch 3 stops when the tension detected by the tension sensor is greater than the set pressure.

[0021] Among them, the specific structure of the through gauge 4 is as follows: the through gauge 4 is a stepped shaft structure with a middle diameter larger than the diameters at both ends, wherein the two ends of the large diameter section in the middle of the through gauge 4 are provided with chamfers, and a connecting ring 5 is fixed on the end face of the small diameter section of the through gauge 4, and the wire rope 3-1 is hung with the connecting ring 5 at the corresponding end of the through gauge 4, wherein the large diameter section in the middle of the through gauge 4 is adapted to the inner hole of the seamless pipe 2 to be tested, and the diameter of the large diameter section in the middle of the through gauge 4 is 0.1 to 0.2 mm smaller than the inner hole diameter of the seamless pipe 2 to be tested. This structure has a wide range of applications and can meet the detection needs of the inner hole of seamless pipes of 500 to 3000 mm.

[0022] The positioning structure of the seamless pipe 2 to be measured on the supporting platform 1 is specifically as follows: a positioning block 6 is fixed to the right end of the plane on the supporting platform 1, and the right end of the seamless pipe 2 to be measured abuts against the side wall of the corresponding end of the positioning block 6, and a sliding block 7 with adjustable position is adapted and connected to the supporting platform 1, and the sliding block 7 abuts against the left end of the seamless pipe 2 to be measured; specifically, the sliding block 7 is a grooved plate arranged with an opening facing downward and fastened on the supporting platform 1, and a handwheel bolt 8 with an inner end that is tightly abutted on the side wall of the corresponding side of the supporting platform 1 is threadedly connected on one side wall of the sliding block 7, and the position of the sliding block 7 is adjusted according to the length of the seamless pipe 2 to be measured, and the adjustment structure is detected, and the adjustment process is convenient and quick.

[0023] A height-adjustable wire rope roller 9 is provided between the winch 3 and the supporting platform 1. The height of the wire rope roller 9 is adjusted according to the change in the size of the seamless pipe 2 to be measured, thereby ensuring the reliability of the tension applied by the winch 3 on the seamless pipe 2 to be measured; and the tension sensor is arranged at the front section of the wire rope roller 9.

[0024] During the inspection, first place the seamless pipe 2 to be tested on the supporting platform 1 so that its right end abuts against the positioning block 6, and adjust the sliding block 7 so that it abuts against the left end of the seamless pipe 2 to be tested, then tighten the handwheel bolt 8 to fix the sliding block 7, and then make the wire rope 3-1 pass through the right end of the seamless pipe 2 to be tested and pass out from the left end, hang the end of the wire rope 3-1 with the connecting ring 5, and then pass the through gauge 4 into the seamless pipe 2 to be tested, and finally start the winch 3 to reel in the wire rope 3-1 until the through gauge 4 is pulled out of the seamless pipe 2 to be tested. The straightness of the inner hole of the seamless pipe 2 to be tested is determined to be qualified. If the detected tension of the tension sensor exceeds the limit value during the pulling process of the through gauge 4, the winch 3 stops, the seamless pipe 2 to be tested is unqualified, the corresponding position of the segmented connected wire rope 3-1 is opened, and the through gauge 4 is manually removed from the seamless pipe 2 to be tested.

[0025] The technical solution adopts mechanized pulling in the whole process of the through gauge 4 adapted to the inside of the tested seamless pipe 2 passing through the inner hole of the tested seamless pipe 2, without manual operation, and the semi-automatic detection structure greatly reduces the labor intensity of manual detection; by arranging a tension sensor on the wire rope 3-1, the tension size of the wire rope 3-1 is detected in real time, which provides conditions for judging whether the through gauge 4 can smoothly pass through the tested seamless pipe, and ensures the reliability and safety of the detection process, that is, when the tension of the tension sensor exceeds the maximum tension when the through gauge 4 is smoothly pulled out, the winch 3 stops, and the straightness of the inner hole of the tested seamless pipe 2 is unqualified;

[0026] This technical solution has a simple structure, novel design, and convenient and quick operation. During the entire detection process, the straightness detection accuracy of the seamless pipe inner hole is less affected by the structural accuracy, and has a high value for promotion and use.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for detecting the straightness of the inner hole of a seamless pipe, characterized in that: The invention comprises a support platform (1) for supporting a seamless pipe (2) to be tested, wherein the seamless pipe (2) to be tested is positioned and supported on the upper plane of the support platform (1), and a through gauge (4) is adapted to fit in the inner hole of the seamless pipe (2) to be tested, a winch (3) is provided on the outer side of the right end of the support platform (1), and the end of a steel wire rope (3-1) on the winch (3) is detachably connected to the right end of the through gauge (4), and when the through gauge (4) is smoothly pulled out of the seamless pipe (2) to be tested by the winch (3), it is considered that the straightness of the inner hole of the seamless pipe (2) to be tested meets the requirement.

2. The device for detecting the inner hole straightness of a seamless pipe according to claim 1, characterized in that: The steel wire rope (3-1) is provided with a tension sensor for detecting the tension of the steel wire rope (3-1), and the hoist (3) stops when the tension detected by the tension sensor is greater than a set pressure.

3. The device for detecting the inner hole straightness of a seamless pipe according to claim 1, characterized in that: The through gauge (4) is in the form of a stepped shaft structure with a middle diameter larger than the diameters at both ends; a connecting ring (5) is fixed on the end surface of the small diameter section of the through gauge (4), and the steel wire rope (3-1) is connected to the connecting ring (5) at the corresponding end of the through gauge (4).

4. The device for detecting the inner hole straightness of a seamless pipe according to claim 1, characterized in that: A positioning block (6) is fixed to the right end of the upper plane of the support platform (1), and the right end of the seamless pipe (2) to be measured abuts against the corresponding end side wall of the positioning block (6). A position-adjustable sliding block (7) is adapted to be connected to the support platform (1), and the sliding block (7) abuts against the left end of the seamless pipe (2) to be measured.

5. The device for detecting the inner hole straightness of a seamless pipe according to claim 4, characterized in that: The sliding block (7) is a grooved plate with its opening facing downward and fastened on the supporting platform (1). A handwheel bolt (8) is threadedly connected on one side wall of the sliding block (7) and its inner end is pressed against the side wall of the corresponding side of the supporting platform (1). The position of the sliding block (7) is adjusted according to the length of the seamless pipe (2) to be measured.

6. The device for detecting the inner hole straightness of a seamless pipe according to claim 1, 2, 3, 4 or 5, characterized in that: A height-adjustable wire rope roller (9) is provided between the hoist (3) and the supporting platform (1).

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