Pipe outer surface protrusion detection device

Abstract

The utility model discloses a pipe outer surface projection detection device, which relates to the technical field of pipe outer wall surface projection detection and comprises a frame and at least three abutting assemblies. The abutting assemblies are fixedly arranged on the inner side wall of the frame in the circumferential direction around the axis of the frame. The abutting assembly comprises a telescopic device and a rolling ball. One end of the telescopic device is fixed on the inner side wall of the frame; the telescopic device can stretch out and draw back in the first direction. The rolling ball is rotatably arranged at the tail end of the telescopic rod around the ball center; when the telescopic rod stretches out and draws back in the first direction, the telescopic rod can drive the rolling ball to move in the direction close to or away from the axis of the frame and keep the moved position. And the rolling ball is in rolling contact with the outer wall of the to-be-detected pipe. The detection operation is simple and convenient, the detection cost is low, the detection accuracy is improved, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tube outer wall surface bulge detection, in particular to a tube outer surface bulge detection device. Background Art

[0002] In the field of temporary steel structure construction in civil engineering, a large number of steel pipes are usually used to build steel pipe support frames to meet various needs of the construction site. This type of bracket is in great demand because of its many usage scenarios. After the steel pipe is rusted, its external surface area and volume will increase; the back-and-forth installation and disassembly is usually carried out by knocking in violation of the regulations, resulting in a large number of deformations. After the steel pipe is deformed, its structure will exceed the external design limits. Both of these situations will cause the outer dimensions of the steel pipe to deviate or change from the original design. After bulges appear on the surface of the steel pipe, they need to be repaired, adjusted or removed for safe and efficient use.

[0003] For the detection of bulges on the outer surface of steel pipes, the current construction method is:

[0004] ① Manual observation and tactile evaluation, and direct removal of those with severe deformation or rust;

[0005] ② Use a vernier caliper to measure the diameter of the steel pipe and select a number of points that meet the specifications for inspection;

[0006] ③ A batch of steel pipes are extracted and X-rayed using a special radiographic flaw detector, which is operated by a dedicated person. Based on the output report, it is determined whether they can continue to be used.

[0007] Problems:

[0008] ① Based on manual observation and tactile evaluation, the human factor is large and it is difficult to judge a small error;

[0009] ②Using vernier calipers for testing, only some steel pipes can be selected from a batch, and several points are selected on these steel pipes for measurement. The number of tests is small, the efficiency is low, and there are factors such as human errors;

[0010] ③ The method of random sampling and X-ray detection is adopted. Although it requires professional tools and professionals, it is expensive compared to the cost of temporary structural steel pipes, and long-term operation is prone to radiation. Utility Model Content

[0011] The utility model aims to provide a device for detecting protrusions on the outer surface of a pipe to solve the problems existing in the above-mentioned prior art, with simple and convenient detection operation, low detection cost, improved detection accuracy and high safety.

[0012] To achieve the above purpose, the utility model provides the following solutions:

[0013] The utility model provides a device for detecting protrusions on the outer surface of a tube, comprising a frame and at least three abutment assemblies; each of the abutment assemblies is fixedly arranged on the inner side wall of the frame around the axis of the frame; the abutment assembly comprises a telescopic device and a rolling ball; one end of the telescopic device is fixed on the inner side wall of the frame; the telescopic device has a telescopic rod that can be telescoped along a first direction; the rolling ball is rotatably arranged around its ball center at the end of the telescopic rod; when the telescopic rod is telescoped along the first direction, the telescopic rod can drive the rolling ball to move in a direction close to or away from the axis of the frame and maintain the position after the movement; the rolling ball is used for rolling contact with the outer wall of the tube to be tested.

[0014] Preferably, a base is fixedly provided at the end of the telescopic rod, a spherical groove is provided on the base, and the rolling ball is arranged in the spherical groove so as to rotate around its ball center.

[0015] Preferably, scale lines and corresponding scale values ​​are provided on the telescopic rod.

[0016] Preferably, the telescopic device has a telescopic channel, and a rotating gear is rotatably arranged in the telescopic channel; a rack is arranged at one end of the telescopic rod, the rack is located in the telescopic channel, and the rack is meshed with the rotating gear for transmission; an adjusting knob is arranged on the telescopic device, the adjusting knob is fixedly connected to the rotating gear, the adjusting knob is used to drive the rotating gear to rotate, and a limiting member is arranged on the telescopic device, and the limiting member is used to limit the rotation of the adjusting knob.

[0017] Preferably, the frame is a square frame.

[0018] Preferably, one abutment assembly is respectively provided on each of the four inner sides of the frame, and a reinforcing connecting plate is fixedly provided on the frame between two adjacent abutment assemblies.

[0019] Compared with the prior art, the utility model has achieved the following technical effects:

[0020] The tube outer surface protrusion detection device provided by the utility model adopts a frame with a plurality of abutment components on the inner side wall. When detecting the protrusion on the tube outer surface, the frame is sleeved on the tube to be tested. The frame can be sleeved on the tube to be tested, and the inner diameter formed between the rolling balls of each abutment component is a fixed size. When the frame rotates on the tube to be tested and moves along the axis direction of the tube to be tested, if the frame can smoothly pass through the entire tube to be tested along the axis of the tube to be tested, the detection result is passed; if the frame is stuck, the corresponding position indicates that the protrusion at the position is large, and the detection result is unqualified; the entire detection operation is simple and convenient, which reduces the difficulty of personnel operation. , it can be operated without professional training, and the result is highly accurate with small human errors; no professional equipment is required, the cost is low, and the safety is high. One person can complete the inspection of a large number of tubes to be tested, and full coverage inspection can be easily achieved when necessary, effectively improving the inspection efficiency; and the telescopic device can drive the rolling ball to move its position, so as to be suitable for the inspection of protrusions on the outer surface of tubes to be tested with different diameters; multiple abutment components can maintain the coaxiality of the axis of the tube to be tested and the axis of the frame, thereby improving the inspection accuracy; and the rolling ball forms a rolling contact with the outer wall of the tube to be tested, which can reduce friction and extend the service life.

[0021] Furthermore, a base with a spherical groove is used to install the rolling ball, which has a simple structure and is easy to manufacture.

[0022] Furthermore, the scale lines and corresponding scale values ​​provided on the telescopic rod can conveniently know the outer diameter of the tube to be tested that is applicable thereto.

[0023] Furthermore, the rotating gear is driven to rotate by adjusting the knob, and the matching rack is extended and retracted, and the structure is simple and convenient for processing and manufacturing.

[0024] Furthermore, a square frame is used, which is convenient for the operator to hold and apply external force to, and can conveniently display the rotational motion state.

[0025] Furthermore, strengthening the connecting plate can enhance the overall strength of the frame, ensure the stability of the dimensions set between the rolling balls, and reduce the possibility of inaccurate detection caused by deformation caused by squeezing the outer wall of the tube to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the overall structure of the tube outer surface protrusion detection device provided by the utility model;

[0028] Figure 2 This is a schematic structural diagram of an abutment assembly in a tube outer surface protrusion detection device provided by the utility model;

[0029] Figure 3 A schematic diagram of the internal structure of the telescopic device in the tube outer surface bulge detection device provided by the utility model;

[0030] Figure 4 This is an exploded view of the structure of the rolling ball and the bottom bracket in the tube outer surface bulge detection device provided by the utility model;

[0031] Figure 5 A schematic diagram of the use of the tube outer surface protrusion detection device provided by the utility model.

[0032] In the figure:

[0033] 100-tube outer surface protrusion detection device;

[0034] 10-frame; 11-reinforced connecting plate;

[0035] 20-abutment assembly; 21-telescopic device; 211-telescopic channel; 212-rotating gear; 213-rack; 214-adjusting knob; 215-limiting plate; 216-telescopic rod; 22-rolling ball; 23-bottom support; 231-spherical groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to 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 the embodiments. Based on the embodiments in 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.

[0037] The utility model aims to provide a device for detecting protrusions on the outer surface of a pipe to solve the problems existing in the prior art, with simple and convenient detection operation, low detection cost, improved detection accuracy and high safety.

[0038] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] Embodiment 1

[0040] This embodiment provides a device 100 for detecting bulges on the outer surface of a pipe, which is mainly but not limited to detecting bulges on the outer surface of a steel pipe in the construction of a temporary steel structure in civil engineering, such as detecting bulges on the outer surface of a steel pipe at a connection position. Figure 1 to Figure 5As shown, it includes a frame 10 and at least three abutment assemblies 20; each abutment assemblies 20 are fixedly arranged on the inner wall of the frame 10 around the axis of the frame 10; the abutment assemblies 20 include a telescopic device 21 and a rolling ball 22; one end of the telescopic device 21 is fixed on the inner wall of the frame 10; the telescopic device 21 has a telescopic rod 216 that can be telescoped along a first direction; the rolling ball 22 is rotatably arranged around its ball center at the end of the telescopic rod 216; when the telescopic rod 216 is telescoped along the first direction, the telescopic rod 216 can drive the rolling ball 22 to move in a direction close to or away from the axis of the frame 10 and maintain the moved position; the rolling ball 22 is used for rolling contact with the outer wall of the tube to be tested.

[0041] By adopting a frame 10 with a plurality of abutment components 20 on the inner wall, when detecting the protrusion on the outer surface of the tube, it is sleeved on the tube to be tested. It can be sleeved on the tube to be tested. Based on the inner diameter formed between the rolling balls 22 of each abutment component 20 is a fixed size, when it rotates on the tube to be tested and moves along the axis direction of the tube to be tested, if it can smoothly pass through the entire tube to be tested along the axis of the tube to be tested, the detection result is passed; if it is stuck, the corresponding position indicates that the protrusion at this position is large, and the detection result is unqualified; the entire detection operation is simple and convenient, reducing the difficulty of personnel operation, and can be operated without professional training. The detection work is simple, and the result is accurate and the human error is small; no professional equipment is required, the cost is low, and the safety is high. One person can complete the detection of a large number of tubes to be tested. When necessary, full coverage detection can be easily achieved, effectively improving the detection efficiency; and the telescopic device 21 can drive the rolling ball 22 to move its position, so as to be suitable for the detection of protrusions on the outer surface of tubes to be tested with different diameters; the multiple abutment components 20 can maintain the coaxiality of the axis of the tube to be tested and the axis of the frame 10, thereby improving the detection accuracy; and the rolling ball 22 forms a rolling contact with the outer wall of the tube to be tested, which can reduce friction and extend the service life.

[0042] Among them, the structure of the framework 10 is described as follows:

[0043] Specifically, the shape of the frame 10 includes but is not limited to the square shape mentioned below.

[0044] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, the frame 10 is a square frame. The square frame is convenient for the operator to hold and apply external force to it, and can conveniently display its rotating motion state.

[0045] Among the optional solutions of this embodiment, it is more preferred that Figure 1As shown, an abutment assembly 20 is respectively arranged on the four sides of the inner side of the frame 10, and a reinforcing connecting plate 11 is fixedly arranged on the frame 10 between two adjacent abutment assemblies 20. The reinforcing connecting plate 11 can enhance the overall strength of the frame 10, ensure the stability of the dimensions set between the rolling balls 22, and reduce the deformation caused by the outer wall of the tube to be tested, which leads to inaccurate detection.

[0046] The structural description of the abutment assembly 20 is as follows:

[0047] Specifically, the structure of the telescopic device 21 includes but is not limited to the following structural components, and can also be any existing device that can achieve telescopic operation.

[0048] Among the optional solutions of this embodiment, it is more preferred that Figure 3 As shown, the telescopic device 21 has a telescopic channel 211, in which a rotating gear 212 is rotatably arranged; a rack 213 is arranged at one end of a telescopic rod 216, the rack 213 is located in the telescopic channel 211, and the rack 213 is meshed with the rotating gear 212 for transmission; an adjusting knob 214 is arranged on the telescopic device 21, and the adjusting knob 214 is fixedly connected to the rotating gear 212, and the adjusting knob 214 is used to drive the rotating gear 212 to rotate, and a limiting member is arranged on the telescopic device 21, and the limiting member is used to limit the rotation of the adjusting knob 214. The rotating gear 212 is driven to rotate by the adjusting knob 214, and the matching rack 213 is extended and retracted, and the structure is simple and convenient for processing and manufacturing.

[0049] Specifically, the limit member is any existing structure that can limit the adjusting knob 214, such as a plurality of limit grooves are provided on the circumferential side wall of the adjusting knob 214, and one end of the limit member is rotatably provided on the telescopic device 21. When the limit member is needed to limit the rotation of the adjusting knob 214, the other end of the limit member is rotated and inserted into the corresponding limit groove to achieve the limitation of its circumferential rotation.

[0050] Specifically, a limit plate 215 is fixedly provided at one end of the telescopic rod 216 located in the telescopic channel 211 , and the limit plate 215 is used to limit the rack 213 on the telescopic rod 216 from being disengaged from the rotating gear 212 .

[0051] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 and Figure 4 As shown, a bottom bracket 23 is fixedly arranged at the end of the telescopic rod 216, and a spherical groove 231 is opened on the bottom bracket 23, and the rolling ball 22 is arranged in the spherical groove 231 for rotating around its ball center. The bottom bracket 23 with the spherical groove 231 is used to install the rolling ball 22, which has a simple structure and is easy to manufacture.

[0052] In the optional solution of this embodiment, preferably, scale lines and corresponding scale values ​​are set on the telescopic rod 216. The scale lines and corresponding scale values ​​set on the telescopic rod 216 can conveniently know the outer diameter size of the tube to be tested that it is applicable to.

[0053] Specifically, the scale value on each telescopic rod 216 can be set to be the distance value between the end of the corresponding rolling ball 22 and the central axis of the frame 10 (ie, half of the outer diameter of the tube to be measured).

[0054] Among them, regarding other related instructions:

[0055] Specifically, when detecting protrusions on the outer surface of the tube to be tested, a plurality of tube outer surface protrusion detection devices 100 of this embodiment can be mounted on the tube to be tested, such as Figure 5 The number shown in the figure is two. In this case, one is used for detection and the other can be used for re-inspection to improve accuracy; or when both ends of the tube to be tested need to be tested, they are respectively used for the detection of the ends of the tube to be tested to improve detection efficiency.

[0056] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for detecting protrusions on the outer surface of a pipe, characterized in that: comprising a frame and at least three abutment assemblies; Each of the abutment components is fixedly arranged on the inner side wall of the frame in a circumferential direction around the axis of the frame; The abutment assembly includes a telescopic device and a rolling ball; one end of the telescopic device is fixed to the inner side wall of the frame; The telescopic device comprises a telescopic rod capable of being telescoped in a first direction; the rolling ball is arranged at the end of the telescopic rod so as to rotate around its ball center; When the telescopic rod is extended and retracted along the first direction, the telescopic rod can drive the rolling ball to move toward or away from the axis of the frame and maintain the moved position; the rolling ball is used to roll in contact with the outer wall of the tube to be tested.

2. The device for detecting protrusions on the outer surface of a tube according to claim 1, characterized in that: A bottom bracket is fixedly arranged at the end of the telescopic rod, a spherical groove is opened on the bottom bracket, and the rolling ball is arranged in the spherical groove to rotate around its ball center.

3. The device for detecting protrusions on the outer surface of a tube according to claim 1, characterized in that: The telescopic rod is provided with scale lines and corresponding scale values.

4. The device for detecting protrusions on the outer surface of a pipe according to claim 1, characterized in that: The telescopic device has a telescopic channel, and a rotating gear is rotatably arranged in the telescopic channel; A rack is provided at one end of the telescopic rod, the rack is located in the telescopic channel, and the rack is meshed with the rotating gear for transmission; The telescopic device is provided with an adjusting knob, the adjusting knob is fixedly connected to the rotating gear, the adjusting knob is used to drive the rotating gear to rotate, and the telescopic device is provided with a limiting member, the limiting member is used to limit the rotation of the adjusting knob.

5. The device for detecting protrusions on the outer surface of a pipe according to claim 1, characterized in that: The frame is a square frame.

6. The device for detecting protrusions on the outer surface of a pipe according to claim 5, characterized in that: One abutting assembly is respectively arranged on the four inner sides of the frame, and a reinforcing connecting plate is fixedly arranged on the frame between two adjacent abutting assemblies.

Images