Steel pipe bending detection device

Abstract

A steel pipe bending testing device belongs to the technical field of special testing devices for metal pipes. It includes a steel pipe support point spacing testing mechanism, a steel pipe mid-span deflection testing mechanism, and a steel pipe arch testing mechanism. The steel pipe support point spacing testing mechanism is located in front of the steel pipe mid-span deflection testing mechanism, while the steel pipe arch testing mechanism is located behind it. The technical advantages are: the testing requirements for steel pipe bending can be met through the coordinated action of the steel pipe support point spacing testing mechanism, the steel pipe mid-span deflection testing mechanism, and the steel pipe arch testing mechanism; the overall structure has good simplicity, fast and reliable testing, good maintenance-free operation, and no stringent operational requirements for testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of special testing devices for metal pipes, and specifically relates to a steel pipe bending testing device. Background Technology

[0002] The aforementioned steel pipes are primarily, but not exclusively, seamless steel pipes (the same applies below). During production and heat treatment, steel pipes may experience slight bending due to factors such as their own weight, uneven cooling, and internal stress release. Straightness is one of the key geometric dimensions for measuring the quality of steel pipes, directly affecting subsequent processing and use. The purpose of inspecting steel pipes is to quantify the degree of bending. The positive significance of bending inspection of steel pipes includes at least the following: by detecting the bending trend of large batches of steel pipes, problems in the production process can be traced back. For example, if the bending is in one direction, it may mean that the straightening machine parameters are improperly set, the cooling bed is uneven, or the temperature of the heat treatment furnace is uneven. This can provide direct evidence for process improvement. Different customers (users) and different applications have different requirements for straightness levels. For example, the requirements for ordinary fluid transport pipes are relatively low, while the requirements for hydraulic cylinders are very stringent. Enterprises can grade their products based on test results to achieve premium pricing for high-quality products, meet diversified market demands, and avoid selling high-precision pipes as ordinary pipes at low prices, and vice versa. They can also fulfill contract and standard requirements. Various domestic and international product standards such as API, ASTM, and BG / T have certain quantitative regulations on the curvature or straightness of seamless steel pipes, etc.

[0003] The steel pipe bending inspection involved in this utility model can also be called bent steel pipe inspection. It is a process by which steel pipe manufacturers inspect steel pipes bent into a certain shape, such as an "n" shape, before they leave the factory to ensure product consistency for downstream users.

[0004] As is known in the industry, steel pipe bending testing devices are non-standard equipment, lacking both industry-specific and national standards. They are typically designed and manufactured by steel pipe manufacturers themselves, and must adhere to principles of simple and practical structure, while also ensuring accurate and reliable testing. Furthermore, they must be maintenance-free or require only timely maintenance, with minimal cost. The technical solution described below arose under these circumstances. Utility Model Content

[0005] The objective of this invention is to provide a steel pipe bending testing device that helps to embody structural simplicity, fast and reliable testing, good maintenance-free operation, and non-demanding testing requirements.

[0006] The present invention accomplishes its objective as follows: a steel pipe bending detection device includes a steel pipe support point spacing detection mechanism, a steel pipe mid-span deflection detection mechanism, and a steel pipe arch detection mechanism. The steel pipe support point spacing detection mechanism is located in front of the steel pipe mid-span deflection detection mechanism, while the steel pipe arch detection mechanism is located behind the steel pipe mid-span deflection detection mechanism.

[0007] In a specific embodiment of this utility model, the steel pipe fulcrum spacing detection mechanism includes a front support, a fulcrum spacing scale, a steel pipe left fulcrum adjustment component, a steel pipe left fulcrum locking component, a steel pipe right fulcrum adjustment component, a steel pipe right fulcrum locking component, a left-right displacement drive screw for the adjustment component, and a left-right displacement drive screw operating handwheel for the adjustment component. The front support includes a steel pipe fulcrum spacing detection platform and a pair of steel pipe fulcrum spacing detection platform support legs located on the left and right ends of the steel pipe fulcrum spacing detection platform and supported on the ground of the testing site in the use state. The left and right ends of the steel pipe fulcrum spacing detection platform are fixed to the tops of the pair of steel pipe fulcrum spacing detection platform support legs, respectively. The fulcrum spacing scale is fixed on the surface of the steel pipe fulcrum spacing detection platform facing upward along its length direction. The steel pipe left fulcrum adjustment component is movably arranged between the steel pipe fulcrums. On the testing platform, the left fulcrum locking component of the steel pipe is fixed to the steel pipe fulcrum spacing testing platform with left and right adjustment, and is located to the right of the left fulcrum adjusting component. The right fulcrum adjusting component of the steel pipe is movably mounted on the steel pipe fulcrum spacing testing platform, and the right fulcrum locking component is fixed to the steel pipe fulcrum spacing testing platform with left and right adjustment, and is located to the left of the right fulcrum adjusting component. The left and right displacement driving screw of the adjusting component is rotatably mounted below the steel pipe fulcrum spacing testing platform at the positions corresponding to the left and right fulcrum adjusting components. The lower ends of the left and right fulcrum adjusting components extend below the steel pipe fulcrum spacing testing platform and are respectively engaged with the left and right displacement driving screw of the adjusting component. The right end of the left and right displacement driving screw of the adjusting component protrudes below the right end of the steel pipe fulcrum spacing testing platform, and the operating handwheel of the left and right displacement driving screw of the adjusting component is fixed to the right end of the left and right displacement driving screw of the adjusting component.

[0008] In another specific embodiment of this utility model, a left-right moving groove for a steel pipe left fulcrum adjusting component is provided at the left end of the steel pipe fulcrum spacing detection platform, penetrating the thickness direction of the steel pipe fulcrum spacing detection platform. Similarly, a right-right moving groove for a steel pipe right fulcrum adjusting component is provided at the right end of the steel pipe fulcrum spacing detection platform, also penetrating the thickness direction of the platform. Both the left and right moving grooves are located behind the fulcrum spacing scale and are horizontally parallel to it. The lower ends of the left and right fulcrum adjusting components extend through their respective moving grooves to the bottom of the steel pipe fulcrum spacing detection platform, engaging with the left-right displacement driving screw of the adjusting component. The left and right fulcrum locking components are fixed to the steel pipe fulcrum spacing detection platform in a left-right adjustable manner at positions corresponding to the left and right moving grooves of the left and right fulcrum adjusting components.

[0009] In another specific embodiment of this utility model, the structure of the right fulcrum adjusting member of the steel pipe is the same as the structure of the left fulcrum adjusting member of the steel pipe; the structure of the right fulcrum locking member of the steel pipe is the same as the structure of the left fulcrum locking member of the steel pipe.

[0010] In another specific embodiment of this utility model, the steel pipe left fulcrum adjusting component includes an adjusting component left and right displacement driving screw and a nut block and a steel pipe left fulcrum stop post. A adjusting component left and right displacement driving screw transmission and engagement threaded hole is formed in the middle region of the adjusting component left and right displacement driving screw and nut block. The adjusting component left and right displacement driving screw transmission and engagement threaded hole is threaded with the adjusting component left and right displacement driving screw. The steel pipe left fulcrum stop post is formed on the upward-facing side of the middle part of the steel pipe left fulcrum stop post plate along the length direction and extends upward. Both ends of the steel pipe left fulcrum stop post plate are fixed to the adjusting component left and right displacement driving screw and nut block by steel pipe left fulcrum stop post plate screws. A steel pipe left fulcrum stop post foot is formed at the upper end of the steel pipe left fulcrum stop post.

[0011] In another specific embodiment of this utility model, the steel pipe left fulcrum locking component includes a steel pipe left fulcrum left and right adjusting slider, a steel pipe left fulcrum left and right adjusting slider locking screw, and a steel pipe left fulcrum left and right adjusting slider locking screw nut sleeve. The steel pipe left fulcrum left and right adjusting slider is shaped like a convex Chinese character and slides in cooperation with the steel pipe fulcrum spacing detection platform at a position corresponding to the left and right moving groove of the steel pipe left fulcrum adjusting component. The lower end of the steel pipe left fulcrum left and right adjusting slider locking screw is fixed to the top of the upward-facing side of the steel pipe left fulcrum left and right adjusting slider, while the upper end extends from the lower end of the left and right moving groove of the steel pipe left fulcrum adjusting component to the upper end of the steel pipe fulcrum spacing detection platform. The steel pipe left fulcrum left and right adjusting slider locking screw nut sleeve is threadedly engaged with the upper end of the steel pipe left fulcrum left and right adjusting slider locking screw. A flange is formed at the lower end of the steel pipe left fulcrum left and right adjusting slider locking screw nut sleeve, and the flange is supported on the top surface of the steel pipe left fulcrum left and right adjusting slider.

[0012] In a further specific embodiment of this utility model, a spatial distance is maintained between the steel pipe mid-span deflection detection mechanism and the steel pipe support point spacing detection mechanism, and the steel pipe mid-span deflection detection mechanism and the steel pipe support point spacing detection mechanism are parallel in the length direction, and the structure of the steel pipe mid-span deflection detection mechanism is the same as that of the steel pipe support point spacing detection mechanism; wherein, the shape of the steel pipe mid-span deflection detection platform of the steel pipe mid-span deflection detection mechanism is D-shaped, and the steel pipe arch detection mechanism is set on the steel pipe mid-span deflection detection platform.

[0013] In a further specific embodiment of this utility model, the steel pipe arch detection mechanism includes a steel pipe arch intermediate detection device, a steel pipe arch left detection device, and a steel pipe arch right detection device, all commonly arranged on the steel pipe mid-span deflection detection platform. The steel pipe arch left detection device is located to the left of the steel pipe arch intermediate detection device in an inclined state, while the steel pipe arch right detection device is located to the right of the steel pipe arch intermediate detection device in an inclined state. The steel pipe arch left detection device, the steel pipe arch intermediate detection device, and the steel pipe arch right detection device are arranged radially from left to right on the steel pipe mid-span deflection detection platform.

[0014] In another specific embodiment of this utility model, the structure of the left and right detection devices for the steel pipe arch is the same as that of the middle detection device for the steel pipe arch. The middle detection device for the steel pipe arch includes a scale ruler, an adjusting component, a locking component, an adjusting component drive screw, and a screw rotation handwheel. The scale ruler is fixed on the upward-facing side of the steel pipe mid-span deflection detection platform. An adjusting groove is formed on the steel pipe mid-span deflection detection platform at the right side corresponding to the length direction of the scale ruler. The lower end of the adjusting component moves back and forth to cooperate with the adjusting groove and is driven by the adjusting component drive screw. The upper end of the adjusting component protrudes from the upper surface of the steel pipe mid-span deflection detection platform. The locking component is adjusted back and forth to cooperate with the adjusting groove at the position corresponding to the front of the adjusting component. The adjusting component drive screw is rotatably supported on the downward-facing side of the steel pipe mid-span deflection detection platform, and the rear end of the adjusting component drive screw extends to the lower rear side of the steel pipe mid-span deflection detection platform. The screw rotation handwheel is fixed to the rear end of the adjusting component drive screw.

[0015] In another specific embodiment of this utility model, a front support seat for the adjusting component driving screw is fixed at the downward-facing end of the steel pipe mid-span deflection testing platform, corresponding to the front end of the adjusting component driving screw, and a rear support seat for the adjusting component driving screw is fixed at the rear end of the adjusting component driving screw. The front end of the adjusting component driving screw is rotatably supported on the front support seat for the adjusting component driving screw by a bearing, and the rear end is also rotatably supported on the rear support seat for the adjusting component driving screw by a bearing.

[0016] The technical advantages of the present invention are as follows: the testing requirements for steel pipe bending can be met by the coordinated action of the steel pipe support spacing detection mechanism, the steel pipe mid-span deflection detection mechanism and the steel pipe arch detection mechanism. Furthermore, the overall structure has good simplicity, fast and reliable testing, good maintenance-free operation and no strict operational requirements for testing. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an embodiment of the present utility model; Figure 2 for Figure 1 A diagram showing the view from the bottom; Figure 3 for Figure 1 and Figure 2 The detailed structural diagram of the left fulcrum adjustment component of the steel pipe is shown. Figure 4 for Figure 1 and Figure 2 The diagram shows the detailed structure of the steel pipe left fulcrum locking component.

[0018] In the diagram: 1. Steel pipe fulcrum spacing detection mechanism; 11. Front support; 111. Steel pipe fulcrum spacing detection platform; 1111. Left and right movement groove of the steel pipe left fulcrum adjusting component; 1112. Left and right movement groove of the steel pipe right fulcrum adjusting component; 112. Support leg of the steel pipe fulcrum spacing detection platform; 113. First screw seat; 114. Second screw seat; 115. Third screw seat; 12. Folding point spacing scale; 13. Steel pipe left fulcrum adjusting component; 131. Adjusting component left and right displacement drive screw with nut block; 1311. Adjusting component left and right displacement drive screw transmission with threaded hole; 132. Steel pipe left fulcrum stop post; 1321. Steel pipe left fulcrum stop post plate; 13211. Steel pipe left fulcrum stop post plate screw; 1322. Steel pipe left fulcrum stop post foot; 14. 1. Steel pipe left fulcrum locking component; 141. Steel pipe left fulcrum left and right adjusting slider; 142. Steel pipe left fulcrum left and right adjusting slider locking screw; 143. Steel pipe left fulcrum left and right adjusting slider locking screw nut sleeve; 1431. Flange; 15. Steel pipe right fulcrum adjusting component; 16. Steel pipe right fulcrum locking component; 17. Adjusting component left and right displacement driving screw; 18. Adjusting component left and right displacement driving screw operating handwheel; 2. Steel pipe mid-span deflection detection mechanism; 21. Steel pipe mid-span deflection detection table; 211. Adjusting groove; 212. Adjusting component drive screw front support seat; 213. Adjusting component drive screw rear support seat; 3. Steel pipe arch detection mechanism; 31. Steel pipe arch intermediate detection device; 311. Scale marking ruler; 312. Adjusting component; 313. Locking component; 314. Adjustment component drive screw, 315. Screw rotation handwheel, 32. Left detection device for steel pipe arch, 33. Right detection device for steel pipe arch; 4. Spatial distance; 5. Standard bend. Detailed Implementation

[0019] In order to better understand the technical essence and beneficial effects of this utility model, the applicant provides a detailed description below by way of embodiments. However, the description of the embodiments is not intended to limit the solution of this utility model. Any formal but not substantive equivalent transformations made based on the concept of this utility model should be considered within the scope of the technical solution of this utility model.

[0020] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on the current position. Figure 1 The location and state are taken as a reference, and therefore should not be construed as a special limitation on the technical solution provided by this utility model.

[0021] Please see Figure 1 and Figure 2The system includes a steel pipe support spacing detection mechanism 1, a steel pipe mid-span deflection detection mechanism 2, and a steel pipe arch detection mechanism 3. The aforementioned steel pipe support spacing detection mechanism 1 is located in front of the aforementioned steel pipe mid-span deflection detection mechanism 2, while the steel pipe arch detection mechanism 3 is located behind the steel pipe mid-span deflection detection mechanism 2.

[0022] The aforementioned steel pipe fulcrum spacing detection mechanism 1 includes a front support 11, a fulcrum spacing scale 12, a steel pipe left fulcrum adjustment component 13, a steel pipe left fulcrum locking component 14, a steel pipe right fulcrum adjustment component 15, a steel pipe right fulcrum locking component 16, a left-right displacement drive screw 17 for the adjustment component, and a left-right displacement drive screw operating handwheel 18 for the adjustment component. The front support 11 includes a steel pipe fulcrum spacing detection platform 111 and supports located on the left and right ends of the steel pipe fulcrum spacing detection platform 111, respectively, and in use... Each pair of steel pipe fulcrum spacing testing platform support legs 112 rests on the floor of the testing site. The left and right ends of the steel pipe fulcrum spacing testing platform 111 are respectively fixed to the top of the aforementioned pair of steel pipe fulcrum spacing testing platform support legs 112 at the left and right ends. The fixing method is preferably, but not limited to, welding. The fulcrum spacing scale 12 is fixed to the surface of the steel pipe fulcrum spacing testing platform 111 on the upward side along its length direction by pasting or using fasteners such as screws. The steel pipe left fulcrum adjustment piece 13 is movably set on the steel pipe fulcrum spacing testing platform 111. On the pipe support point spacing testing platform 111, the left pipe support point locking component 14 is adjusted left and right and fixed to the platform 111, and is located to the right of the left pipe support point adjusting component 13. The right pipe support point adjusting component 15 is movably mounted on the platform 111, and the right pipe support point locking component 16 is adjusted left and right and fixed to the platform 111, and is located to the left of the right pipe support point adjusting component 15. The left and right displacement driving screw 17 of the adjusting component corresponds to the left and right support point adjusting components of the pipe. Positions 13 and 15 are rotatably positioned below the aforementioned steel pipe fulcrum spacing detection platform 111. The lower ends of the left and right fulcrum adjustment components 13 and 15 extend below the steel pipe fulcrum spacing detection platform 111 and are respectively engaged with the left and right displacement drive screw 17 of the adjustment component. The right end of the left and right displacement drive screw 17 of the adjustment component protrudes below the right end of the steel pipe fulcrum spacing detection platform 111, and the aforementioned left and right displacement drive screw operation handwheel 18 of the adjustment component is fixed to the right end of the left and right displacement drive screw 17 of the adjustment component.

[0023] The threads at the left end of the aforementioned adjusting component's left and right displacement driving screw 17 are opposite in direction to the threads at the right end, specifically defined by the third screw seat 115, which will be mentioned later.

[0024] Depend on Figure 2As shown, a first screw seat 113 is fixed on the downward-facing left end of the steel pipe support spacing detection platform 111, corresponding to the position of the aforementioned left-right displacement driving screw 17 of the adjusting member. A second screw seat 114 is fixed at the right end of the adjusting member's left-right displacement driving screw 17. The left and right ends of the adjusting member's left-right displacement driving screw 17 are rotatably supported on the first and second screw seats 113 and 114 respectively by bearings. Furthermore, as a preferred embodiment, a third screw seat 115 can be fixed in the middle of the adjusting member's left-right displacement driving screw 17 to support the middle of the adjusting member's left-right displacement driving screw 17 and prevent deflection.

[0025] See you later Figure 1 and Figure 2 A left-right moving groove 1111 for adjusting the left and right supports of the steel pipe is provided at the left end of the aforementioned steel pipe support spacing measuring platform 111, penetrating the thickness direction of the steel pipe support spacing measuring platform 111. Similarly, a left-right moving groove 1112 for adjusting the right and right supports of the steel pipe is provided at the right end of the steel pipe support spacing measuring platform 111, also penetrating the thickness direction of the steel pipe support spacing measuring platform 111. Both the left and right moving grooves 1111 and 1112 are located behind the aforementioned support spacing scale 12 and are aligned with the support spacing scale. The ruler 12 is horizontally parallel. The lower ends of the aforementioned left and right support adjustment components 13 and 15 of the steel pipe extend through the left and right moving grooves 1111 and 1112 of the steel pipe left and right support adjustment components to the lower part of the aforementioned steel pipe support distance detection platform 111 and engage with the left and right displacement drive screw 17 of the aforementioned adjustment component. The aforementioned left and right support locking components 14 and 16 of the steel pipe are fixed to the aforementioned steel pipe support distance detection platform 111 in a left and right adjustment manner at the positions corresponding to the left and right moving grooves 1111 and 1112 of the steel pipe left and right support adjustment components, respectively.

[0026] from Figure 1 and Figure 2 As shown, the structure of the aforementioned right fulcrum adjusting member 15 of the steel pipe is exactly the same as the structure of the aforementioned left fulcrum adjusting member 13 of the steel pipe; the structure of the aforementioned right fulcrum locking member 16 of the steel pipe is the same as the structure of the aforementioned left fulcrum locking member 14 of the steel pipe.

[0027] Please pay attention. Figure 3 And combined Figure 1 and Figure 2The aforementioned steel pipe left fulcrum adjusting component 13 includes an adjusting component left and right displacement driving screw and nut block 131 and a steel pipe left fulcrum stop post 132. A adjusting component left and right displacement driving screw and nut block 131 is formed in the middle region of the adjusting component left and right displacement driving screw and nut block 131. The adjusting component left and right displacement driving screw and nut block 1311 is threadedly engaged with the aforementioned adjusting component left and right displacement driving screw 17. The steel pipe left fulcrum stop post 132 is formed on the upward-facing side of the middle part of the steel pipe left fulcrum stop post plate 1321 along the length direction and extends upward. Both ends of the steel pipe left fulcrum stop post plate 1321 are fixed to the adjusting component left and right displacement driving screw and nut block 131 by steel pipe left fulcrum stop post plate screws 13211. A steel pipe left fulcrum stop post foot 1322 is formed at the upper end of the steel pipe left fulcrum stop post 132.

[0028] Please pay attention. Figure 4 And still combined Figure 1 and Figure 2 The aforementioned steel pipe left fulcrum locking component 14 includes a steel pipe left fulcrum left and right adjusting slider 141, a steel pipe left fulcrum left and right adjusting slider locking screw 142, and a steel pipe left fulcrum left and right adjusting slider locking screw nut sleeve 143. The steel pipe left fulcrum left and right adjusting slider 141 is shaped like a convex Chinese character and slides in cooperation with the aforementioned steel pipe fulcrum distance detection platform 111 at a position corresponding to the left and right moving groove 1111 of the aforementioned steel pipe left fulcrum adjusting component. The lower end of the steel pipe left fulcrum left and right adjusting slider locking screw 142 is engaged with the steel pipe left fulcrum left and right adjusting slider 141. 41 is fixed at the top of the side facing upward, and the upper end extends from the lower end of the left and right moving groove 1111 of the aforementioned steel pipe left fulcrum adjustment component to the upper end of the steel pipe fulcrum spacing detection platform 111. The locking screw nut sleeve 143 of the left and right adjustment slider of the steel pipe left fulcrum is threadedly engaged with the upper end of the locking screw 142 of the left and right adjustment slider of the steel pipe left fulcrum. A flange 1431 is formed at the lower end of the locking screw nut sleeve 143 of the left and right adjustment slider of the steel pipe left fulcrum. The flange 1431 is supported on the top surface of the aforementioned left and right adjustment slider 141 of the steel pipe left fulcrum.

[0029] Depend on Figure 1 and Figure 2 As shown, a spatial distance 4 is maintained between the aforementioned steel pipe mid-span deflection detection mechanism 2 and the aforementioned steel pipe support point spacing detection mechanism 1 at their rear ends. Furthermore, the steel pipe mid-span deflection detection mechanism 2 and the steel pipe support point spacing detection mechanism 1 are parallel in the length direction, and the structure of the steel pipe mid-span deflection detection mechanism 2 is identical to that of the steel pipe support point spacing detection mechanism 1. The steel pipe mid-span deflection detection platform 21 of the steel pipe mid-span deflection detection mechanism 2 is D-shaped, and the aforementioned steel pipe arch detection mechanism 3 is mounted on the aforementioned steel pipe mid-span deflection detection platform 21. Therefore, it can be seen that the steel pipe arch detection mechanism 3 and the steel pipe mid-span deflection detection mechanism 2 share the aforementioned steel pipe mid-span deflection detection platform 21.

[0030] Still see Figure 1 and Figure 2 The aforementioned steel pipe arch detection mechanism 3 includes a steel pipe arch intermediate detection device 31, a steel pipe arch left detection device 32, and a steel pipe arch right detection device 33, all commonly arranged on the aforementioned steel pipe mid-span deflection detection platform 21. The steel pipe arch left detection device 32 is located to the left of the steel pipe arch intermediate detection device 31 in an inclined state, while the steel pipe arch right detection device 33 is located to the right of the steel pipe arch intermediate detection device 31 in an inclined state. The steel pipe arch left detection device 32, steel pipe arch intermediate detection device 31, and steel pipe arch right detection device 33 are arranged radially from left to right on the aforementioned steel pipe mid-span deflection detection platform 21.

[0031] Since the structures of the aforementioned left and right detection devices 32 and 33 of the steel pipe arch are the same as those of the aforementioned middle detection device 31 of the steel pipe arch, the applicant will only describe the middle detection device 31 of the steel pipe arch. This middle detection device 31 includes a scale marker 311, an adjusting component 312, a locking component 313, an adjusting component drive screw 314, and a screw rotation handwheel 315. The scale marker 311 is glued or fixed to the upward-facing side of the aforementioned mid-span deflection detection platform 21 using fasteners such as screws. A [missing information - likely a marking or marking] is provided on the steel pipe mid-span deflection detection platform 21 at a position corresponding to the right side of the scale marker 311 along its length direction. An adjustment groove 211 is provided. The lower end of the adjustment component 312 is displaced back and forth to cooperate with the adjustment groove 211 and to drive the adjustment component drive screw 314. The upper end of the adjustment component 312 protrudes from the upper surface of the steel pipe mid-span deflection detection platform 21. The locking component 313 is adjusted back and forth to cooperate with the adjustment groove 211 at a position corresponding to the front of the adjustment component 312. The adjustment component drive screw 314 is rotatably supported on the downward-facing side of the steel pipe mid-span deflection detection platform 21, and the rear end of the adjustment component drive screw 314 extends to the lower rear side of the steel pipe mid-span deflection detection platform 21. The screw rotation handwheel 315 is fixed to the rear end of the adjustment component drive screw 314.

[0032] The applicant needs to clarify that the reason why the adjusting component 312 was not described in detail above is because the structure of the adjusting component 312 is similar to that of the component... Figure 3 The steel pipe left fulcrum adjusting member 13 shown is exactly the same. Similarly, the reason why the locking member 313 is not described in detail is because its structure is the same as that of the steel pipe left fulcrum adjusting member 13. Figure 4 The steel pipe left fulcrum locking piece 14 shown is exactly the same.

[0033] Depend on Figure 2As shown in the figure, at the downward end of the mid-span deflection detection table 21 of the steel pipe and at a position corresponding to the front end of the driving screw 314 of the adjusting component, an adjusting component driving screw front support seat 212 is fixed. And at a position corresponding to the rear end of the driving screw 314 of the adjusting component, an adjusting component driving screw rear support seat 213 is fixed. The front end of the adjusting component driving screw 314 is rotatably supported on the adjusting component driving screw front support seat 212 through a bearing, and the rear end is also rotatably supported on the adjusting component driving screw rear support seat 213 through a bearing.

[0034] The applicant briefly describes the use of the present utility model. Before detection, first place a standard bent pipe 5 with a standard bending and shown as an exemplary effect in the steel pipe bending detection device of the present utility model. Figure 1 As shown in the figure, in this state, both ends or two legs of the standard bent pipe 5 are respectively defined by the left and right pipe support adjusting members 13 and 15 and the left and right pipe support locking members 14 and 16 of the structural system of the steel pipe support distance detection mechanism 1. That is, the left leg of the standard bent pipe 5 is defined by the left pipe support adjusting member 13 and the left pipe support locking member 14, and the right leg of the standard bent pipe 5 is defined by the right pipe support adjusting member 15 and the right pipe support locking member 16. The above-mentioned defining method is that the on-line detection personnel operate the operation handwheel 18 of the left and right displacement driving screw of the adjusting member, which drives the left and right displacement driving screw 17 of the adjusting member, and the left and right displacement driving screw 17 of the adjusting member drives the left and right pipe support adjusting members 13 and 15 to move towards each other or away from each other. Because the thread directions of the left end and the right end of the above-mentioned left and right displacement driving screw 17 of the adjusting member are opposite. Since the operations of the above-mentioned steel pipe mid-span deflection detection mechanism 2 and the steel pipe crown detection mechanism 3 are the same as the operation mode of the steel pipe support distance detection mechanism 1, the applicant will not elaborate on them one by one.

[0035] After the standard bent pipe 5 with a standard bending degree is removed, it forms an effect like a standard mold or a standard template. Then put the bent pipe to be detected into it. If it can just match the position of the above-mentioned standard bent pipe 5, it means that the bent pipe is qualified and can be supplied to downstream users for use. Figure 1 and Figure 2 It can be seen that there are a total of seven points for defining the bent pipe with an n-shaped shape. Each point is defined (or "controlled") by a locking member and an adjusting member in cooperation with the steel pipe. Vice versa.

[0036] In summary, the technical solution provided by the present utility model makes up for the deficiencies in the existing technology, successfully completes the invention task, and truly realizes the technical effects described by the applicant in the above technical effect column.​​

Claims

1. A steel pipe bending detection device, characterized in that: It includes a steel pipe support spacing detection mechanism (1), a steel pipe mid-span deflection detection mechanism (2) and a steel pipe arch detection mechanism (3). The steel pipe support spacing detection mechanism (1) is located in front of the steel pipe mid-span deflection detection mechanism (2), while the steel pipe arch detection mechanism (3) is located behind the steel pipe mid-span deflection detection mechanism (2).

2. The steel pipe bending detection device according to claim 1, characterized in that: The steel pipe fulcrum spacing detection mechanism (1) includes a front support (11), a fulcrum spacing scale (12), a steel pipe left fulcrum adjustment component (13), a steel pipe left fulcrum locking component (14), a steel pipe right fulcrum adjustment component (15), a steel pipe right fulcrum locking component (16), a left and right displacement drive screw (17) for the adjustment component, and a left and right displacement drive screw operating handwheel (18) for the adjustment component. The front support (11) includes a steel pipe fulcrum spacing detection platform (111) and left and right fulcrums respectively located on the steel pipe fulcrum spacing detection platform (111). A pair of steel pipe fulcrum spacing testing platform support legs (112) are located on the side and right end of the testing site and are supported on the ground in the testing state. The left and right ends of the steel pipe fulcrum spacing testing platform (111) are respectively fixed to the top of the pair of steel pipe fulcrum spacing testing platform support legs (112). The fulcrum spacing scale (12) is fixed on the surface of the steel pipe fulcrum spacing testing platform (111) facing upward along its length. The steel pipe left fulcrum adjustment piece (13) is movably set on the steel pipe fulcrum spacing testing platform (111) and the steel pipe left fulcrum adjustment piece (13) is movably set on the steel pipe fulcrum spacing testing platform (111). The fulcrum locking component (14) is fixed to the steel pipe fulcrum spacing detection platform (111) with left and right adjustment, and is located to the right of the steel pipe left fulcrum adjusting component (13). The steel pipe right fulcrum adjusting component (15) is movably mounted on the steel pipe fulcrum spacing detection platform (111). The steel pipe right fulcrum locking component (16) is fixed to the steel pipe fulcrum spacing detection platform (111) with left and right adjustment, and is located to the left of the steel pipe right fulcrum adjusting component (15). The left and right displacement driving screw (17) of the adjusting component is located at the corresponding left and right fulcrum adjusting components (13, 15) of the steel pipe. The position is rotatably set below the steel pipe fulcrum spacing detection platform (111). The lower ends of the left and right fulcrum adjustment components (13, 15) of the steel pipe extend below the steel pipe fulcrum spacing detection platform (111) and are respectively engaged with the left and right displacement drive screw (17) of the adjustment component. The right end of the left and right displacement drive screw (17) of the adjustment component protrudes below the right end of the steel pipe fulcrum spacing detection platform (111), and the operating handwheel (18) of the left and right displacement drive screw of the adjustment component is fixed to the right end of the left and right displacement drive screw (17).

3. The steel pipe bending detection device according to claim 2, characterized in that: A left-right moving groove (1111) for adjusting the left and right supports of the steel pipe is provided at the left end of the steel pipe support spacing measuring platform (111), penetrating the thickness direction of the steel pipe support spacing measuring platform (111). Similarly, a left-right moving groove (1112) for adjusting the right and right supports of the steel pipe is provided at the right end of the steel pipe support spacing measuring platform (111). Both the left and right moving grooves (1111, 1112) are located behind the support spacing scale (12) and are adjacent to the support spacing scale. (12) The lower ends of the left and right fulcrum adjustment components (13, 15) of the steel pipe extend through the left and right moving grooves (1111, 1112) of the left and right fulcrum adjustment components to the bottom of the steel pipe fulcrum spacing detection table (111) and are in transmission cooperation with the left and right displacement driving screw (17) of the adjustment component. The left and right fulcrum locking components (14, 16) of the steel pipe are fixed to the steel pipe fulcrum spacing detection table (111) in a left and right adjustment manner at the positions corresponding to the left and right moving grooves (1111, 1112) of the left and right fulcrum adjustment components, respectively.

4. The steel pipe bending detection device according to claim 3, characterized in that: The structure of the right fulcrum adjustment member (15) of the steel pipe is the same as that of the left fulcrum adjustment member (13) of the steel pipe; the structure of the right fulcrum locking member (16) of the steel pipe is the same as that of the left fulcrum locking member (14) of the steel pipe.

5. The steel pipe bending detection device according to claim 4, characterized in that: The steel pipe left fulcrum adjusting component (13) includes an adjusting component left and right displacement driving screw and nut block (131) and a steel pipe left fulcrum stop post (132). A adjusting component left and right displacement driving screw and nut block (131) is formed in the middle area of ​​the adjusting component left and right displacement driving screw and threaded hole (1311). The adjusting component left and right displacement driving screw and threaded hole (1311) is threaded with the adjusting component left and right displacement driving screw (17). The steel pipe left fulcrum stop post (132) is formed on the upward side of the middle of the steel pipe left fulcrum stop post plate (1321) in the length direction and extends upward. Both ends of the steel pipe left fulcrum stop post plate (1321) are fixed to the adjusting component left and right displacement driving screw and nut block (131) by steel pipe left fulcrum stop post plate screws (13211). A steel pipe left fulcrum stop post foot (1322) is formed at the upper end of the steel pipe left fulcrum stop post (132).

6. The steel pipe bending detection device according to claim 4, characterized in that: The steel pipe left fulcrum locking component (14) includes a steel pipe left fulcrum left and right adjustment slider (141), a steel pipe left fulcrum left and right adjustment slider locking screw (142), and a steel pipe left fulcrum left and right adjustment slider locking screw nut sleeve (143). The steel pipe left fulcrum left and right adjustment slider (141) is shaped like a convex Chinese character and slides in cooperation with the steel pipe fulcrum spacing detection platform (111) at the position corresponding to the left and right moving groove (1111) of the steel pipe left fulcrum adjustment component. The lower end of the steel pipe left fulcrum left and right adjustment slider locking screw (142) is in contact with the steel pipe left fulcrum left and right adjustment slider (143). 41) The top of the side facing upward is fixed, and the upper end extends from the lower part of the left and right moving groove (1111) of the steel pipe left fulcrum adjustment component to the upper part of the steel pipe fulcrum spacing detection table (111). The left and right adjustment slider locking screw nut sleeve (143) of the steel pipe left fulcrum is threadedly engaged with the upper end of the left and right adjustment slider locking screw (142) of the steel pipe left fulcrum. A flange (1431) is formed at the lower end of the left and right adjustment slider locking screw nut sleeve (143) of the steel pipe left fulcrum. The flange (1431) is supported on the top surface of the left and right adjustment slider (141) of the steel pipe left fulcrum.

7. The steel pipe bending detection device according to claim 1, characterized in that: A space distance (4) is maintained between the steel pipe mid-span deflection detection mechanism (2) and the steel pipe support point spacing detection mechanism (1) at the rear, and the steel pipe mid-span deflection detection mechanism (2) and the steel pipe support point spacing detection mechanism (1) are parallel in the length direction and the structure of the steel pipe mid-span deflection detection mechanism (2) is the same as that of the steel pipe support point spacing detection mechanism (1); wherein, the shape of the steel pipe mid-span deflection detection platform (21) of the steel pipe mid-span deflection detection mechanism (2) is D-shaped, and the steel pipe arch detection mechanism (3) is set on the steel pipe mid-span deflection detection platform (21).

8. The steel pipe bending detection device according to claim 7, characterized in that: The steel pipe arch detection mechanism (3) includes a steel pipe arch intermediate detection device (31), a steel pipe arch left detection device (32), and a steel pipe arch right detection device (33) all disposed on the steel pipe mid-span deflection detection platform (21). The steel pipe arch left detection device (32) is located on the left side of the steel pipe arch intermediate detection device (31) in an inclined state, while the steel pipe arch right detection device (33) is located on the right side of the steel pipe arch intermediate detection device (31) in an inclined state. The steel pipe arch left detection device (32), the steel pipe arch intermediate detection device (31), and the steel pipe arch right detection device (33) are arranged radially from left to right on the steel pipe mid-span deflection detection platform (21).

9. The steel pipe bending detection device according to claim 8, characterized in that: The structures of the left and right detection devices (32 and 33) of the steel pipe arch are the same as those of the middle detection device (31) of the steel pipe arch. The middle detection device (31) includes a scale (311), an adjustment component (312), a locking component (313), an adjustment component drive screw (314), and a screw rotation handwheel (315). The scale (311) is fixed on the upward-facing side of the steel pipe mid-span deflection detection platform (21). An adjustment groove (211) is provided on the steel pipe mid-span deflection detection platform (21) and on the right side corresponding to the length direction of the scale (311). The lower part of the adjustment component (312) is... The end of the adjustment component (312) is displaced back and forth to cooperate with the adjustment groove (211) and to drive the adjustment component drive screw (314). The upper end of the adjustment component (312) protrudes from the upper surface of the steel pipe mid-span deflection detection platform (21). The locking component (313) is adjusted back and forth to cooperate with the adjustment groove (211) at a position corresponding to the front of the adjustment component (312). The adjustment component drive screw (314) is rotatably supported on the downward-facing side of the steel pipe mid-span deflection detection platform (21). The rear end of the adjustment component drive screw (314) extends to the lower rear side of the steel pipe mid-span deflection detection platform (21). The screw rotation handwheel (315) is fixed to the rear end of the adjustment component drive screw (314).

10. The steel pipe bending detection device according to claim 9, characterized in that: At the downward-facing end of the steel pipe mid-span deflection testing platform (21) and at the position corresponding to the front end of the adjustment component drive screw (314), there is an adjustment component drive screw front support seat (212), and at the position corresponding to the rear end of the adjustment component drive screw (314), there is an adjustment component drive screw rear support seat (213). The front end of the adjustment component drive screw (314) is rotatably supported on the adjustment component drive screw front support seat (212) by a bearing, and the rear end is also rotatably supported on the adjustment component drive screw rear support seat (213) by a bearing.

Images