A device for detecting internal stress of metal structure pipe

Abstract

The present invention relates to the technical field of metal stress detection, and discloses a device for detecting stress inside a metal structure pipe, comprising a stress detection platform and a detection device body, a connecting line and a detection head, wherein the detection device body is mounted on the surface of the stress detection platform, the connecting line is clamped on the surface of the detection device body, the detection head is clamped on the end face of the connecting line away from the detection device body, the surface of the stress detection platform is evenly distributed with metal pipes, and the surface of the stress detection platform is provided with a progressive component for improving work efficiency, when the metal pipe is progressively advanced, firstly, a first support plate is used to apply force to push the mounting plate to flip, at this time, the mounting plate can rotate the upper part of the plate to flip as the center, so that the mounting plate can support and drive the pushing plate to push the metal pipe upward, so that the metal pipe can present an equidistant movement effect when being pushed, and at this time, after the movement is completed, the metal pipe can be conveniently matched with the surface of the detection head for detection, thereby achieving an equidistant progressive feeding effect.

Description

Technical Field

[0001] The invention relates to the technical field of metal detection, in particular to a device for detecting internal stress of a metal structure pipe. Background Art

[0002] Metal structural pipes have the following characteristics: high strength, corrosion resistance, good stability, excellent processing performance, ability to withstand heavy loads, and provide solid support for buildings and mechanical equipment. In the construction field, metal structural pipes are often used to build scaffolding, handrails, piping systems, etc.

[0003] In the production process of metal structure pipes, stress detection is an indispensable item. In order to ensure that the products meet the relevant standards and specifications, avoid failures during use, and ensure the safety of personnel and equipment, its main purpose is to determine the stress size, direction and distribution of the object under different conditions, and ensure that the product meets the stress-related requirements. Common stress detection methods include: strain measurement, ultrasonic, non-destructive testing technology, optical measurement methods;

[0004] However, in the process of using the ultrasonic stress detection device, the detection personnel usually need to hold the metal structure pipe and push it to the surface of the workbench, and then fit the probe with the surface of the metal structure pipe. However, since the metal structure pipe is usually placed on the table and needs to be moved by the detection personnel, the detection personnel hold the surface of the metal structure pipe and then apply force to move it, and the metal structure pipe cannot be automatically advanced. As a result, during the placement and detection process, the detection personnel have a large workload and need to carry it repeatedly. It is impossible to feed the material at equal distances and the efficiency is poor, which affects the overall detection efficiency.

[0005] At the same time, the ultrasonic probe has a certain penetration power on metal materials. The ultrasonic probe can detect the entire interior of the metal structure pipe. However, since the ultrasonic probe contacts the detection surface of the metal structure pipe, the bottom surface of the probe is mostly flat, so the hands of the inspectors may shake due to fatigue or instability during the hand-held probe inspection, which may cause a collision between the ultrasonic probe and the metal structure pipe, or a short period of non-fitting between the ultrasonic probe and the metal structure pipe due to shaking, which may easily lead to errors in the ultrasonic probe during the inspection of the metal structure pipe, and the inspectors need to apply force to drive the ultrasonic probe to move on the surface of the metal structure pipe, which may cause the accuracy of stress detection and offset during the movement, resulting in a certain impact on the detection results;

[0006] In addition, the diameters of metal structure pipes vary in size, so when the metal structure pipes are tested by the stress detection device, the test personnel need to hold the probe in hand and make the probe fit the surface of the metal structure pipe for circumferential testing. At the same time, since metal pipes of different diameters require different focusing characteristics and sensitivities to ensure accurate detection of defects, the test personnel need to select suitable ultrasonic probes according to the pipes of different diameters, or use the probe in hand to perform multi-angle testing on the surface of the metal structure pipe. The replacement of the probe and the movement of the probe in hand will affect the overall efficiency of the metal structure pipe testing.

[0007] Therefore, a device for detecting internal stress of a metal structure pipe is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a device for detecting internal stress of a metal structure pipe to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting internal stress of a metal structure pipe, comprising a stress detection platform and a detection device body, a connecting wire and a detection head, wherein the detection device body is installed on the surface of the stress detection platform, the connecting wire is clamped on the surface of the detection device body, and the detection head is clamped on the end face of the connecting wire away from the detection device body, the surface of the stress detection platform is evenly provided with metal pipes, the surface of the stress detection platform is provided with a progressive component for maintaining consistency and reducing labor intensity, a placement component for improving detection accuracy and reducing labor costs is provided above the progressive component, and a steering component for improving detection comprehensiveness and improving applicability of the placement component is provided on the upper surface of the stress detection platform.

[0010] Preferably, the progressive component includes a groove, which is provided on the surface of the stress detection platform, and a double-headed driving motor is fixedly connected to the surface of the stress detection platform, and a fixing rod is symmetrically rotatably connected to the surface of the groove, and the output shaft of the double-headed driving motor is fixedly connected to the end face of a single fixing rod, and the surfaces of the two fixing rods are fixedly connected to a first pulley, and a first belt body is transmission-connected between the two first pulleys, and mounting plates are symmetrically arranged in the groove, and the bottom surfaces of the two mounting plates are fixedly connected to the first support plate in pairs, and the side surface of the first support plate away from the mounting plate is hinged with a rotating plate, and the side surface of the rotating plate away from the mounting plate is fixedly connected to the fixing rod, and the upper surfaces of the two mounting plates are fixedly connected to push plates in pairs, and pushing grooves are evenly opened on the upper surfaces of the push plates, and the surface of the stress detection platform is fixedly connected to baffles in pairs, and the sides of the two baffles close to each other are evenly fixedly connected to support blocks, and the support blocks fit the surface of the metal pipe.

[0011] Preferably, the placement assembly includes connecting plates, which are fixedly connected to the surface of the baffle in pairs, the surfaces of the two connecting plates are rotatably connected with screws, the surfaces of the two screws and the fixed rod are fixedly connected with second pulleys, and the three second pulleys are respectively transmission-connected with second belt bodies, the surfaces of the two screws are threadedly connected with a support shell, the inner wall of the support shell is fixedly connected with a second support plate, the surface of the second support plate is penetrated by a guide groove, the surface of the guide groove is paired with half gears, the sides of the half gears away from each other are in contact with the inner wall of the support shell, and the surface between the two half gears close to each other is fixedly connected with a placement plate.

[0012] Preferably, the steering assembly includes a transmission gear, which is rotatably connected to the inner wall of the support shell, the transmission gear is meshingly connected to the half gear, a side surface of the transmission gear away from the support shell is fixedly connected to a first bevel gear, the surface of the first bevel gear is meshingly connected to a second bevel gear, the second bevel gear is rotatably connected to the top surface of the inner wall of the support shell, a side of the second bevel gear away from the first bevel gear is meshingly connected to a bevel rack, both sides of the bevel rack are fixedly connected to the baffle, the bevel rack passes through the surface of the support shell, a limiting groove is provided on the surface of the support shell, and the sides of the two half gears away from each other are fixedly connected to a limiting rod.

[0013] Preferably, the pushing groove is in the shape of an inverted trapezoid.

[0014] Preferably, the two baffles are respectively located at two ends of the metal tube.

[0015] Preferably, the support blocks are in groups of two, and the support blocks are trapezoidal in shape and made of rubber.

[0016] Preferably, the placement plate and the connecting wire are connected by snap-fitting.

[0017] Preferably, the limiting rod is located in the limiting groove.

[0018] Preferably, the limiting groove is in a semi-arc shape.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When feeding the metal tube progressively, firstly, the first support plate is used to push the mounting plate to flip. At this time, the mounting plate can be turned around the upper part of the rotating plate, so that the mounting plate can support and drive the pushing plate to push the metal tube upward, so that the metal tube can show an equidistant movement effect when being pushed. At this time, after the metal tube moves, it can be conveniently matched with the surface of the detection head for detection, thereby achieving the effect of equidistant progressive feeding;

[0021] 2. The screw rod, the support shell and the placement plate cooperate with each other. When the screw rod is driven to rotate by the second pulley and the second belt body, the support shell is moved by the driving force of the thread. At this time, the support shell can drive the position of the connecting line connected with the placement plate to move. At this time, the placement plate can place the connecting line and the detection head so that the connecting line and the detection head can detect different distances on the surface of the metal pipe, reducing manual participation, thereby reducing the error caused by manual holding and improving accuracy;

[0022] 3. The half gear, transmission gear, first bevel gear and second bevel gear cooperate with each other. During the movement of the support shell and the screw rod, the second bevel gear can be moved to rotate in mesh with the bevel rack, so that the support shell can conveniently drive the detection head to detect different positions of the metal pipe during the movement. The rotation of the second bevel gear can drive the first bevel gear and the transmission gear to rotate. The angle of the half gear is driven by the transmission gear, so that the position of the detection head can be flipped during the linear movement, thereby achieving the effect of detecting multiple angles and making the detection more comprehensive.

[0023] 4. By setting up the second support plate, limit groove and limit rod, when the half gear drives the detection head to change its angle, the second support plate can conveniently support the half gear to prevent the half gear from being dislocated due to the gravity of the detection head due to the angle change. At the same time, when the half gear is rotating, the limit rod can slide in the limit groove to improve the stability of the flipping and reduce shaking, thereby achieving a stable support effect and playing a role of auxiliary support. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a vertical cross-sectional schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the progressive component structure of the present invention;

[0027] Figure 4 It is a partial schematic diagram of the progressive assembly structure of the present invention;

[0028] Figure 5 It is a vertical cross-sectional schematic diagram of the assembly placement structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the steering assembly of the present invention;

[0030] Figure 7 It is a vertical cross-sectional schematic diagram of the steering assembly structure of the present invention;

[0031] Figure 8It is a partial schematic diagram of the steering assembly structure of the present invention.

[0032] In the figure:

[0033] 1. Stress testing platform; 2. Testing device body; 3. Connecting wire; 4. Testing head;

[0034] Progressive assembly: 5, groove; 6, double-head drive motor; 7, fixing rod; 8, first pulley; 9, first belt body; 10, mounting plate; 11, first support plate; 12, rotating plate; 13, push plate; 14, push groove; 15, baffle; 16, support block;

[0035] Placement components: 17, connecting plate; 18, screw; 19, second pulley; 20, second belt body; 21, support shell; 22, second support plate; 23, guide groove; 24, half gear; 25, placement plate;

[0036] Steering assembly: 26, transmission gear; 27, first bevel gear; 28, second bevel gear; 29, bevel rack; 30, limit groove; 31, limit rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 8 , is an embodiment provided by the present invention: a metal structure pipe internal stress detection device, comprising a stress detection platform 1 and a detection device body 2, a connecting line 3 and a detection head 4, the detection device body 2 is mounted on the surface of the stress detection platform 1, the connecting line 3 is clamped on the surface of the detection device body 2, the detection head 4 is clamped on the end face of the connecting line 3 away from the detection device body 2, the surface of the stress detection platform 1 is evenly provided with metal pipes, the surface of the stress detection platform 1 is provided with a progressive component for maintaining consistency and reducing labor intensity, a placement component for improving detection accuracy and reducing labor costs is provided above the progressive component, and a steering component for improving detection comprehensiveness and improving the applicability of the placement component is provided on the upper surface of the stress detection platform 1;

[0039] The progressive component includes a groove 5, which is opened on the surface of the stress detection platform 1. A double-headed driving motor 6 is fixedly connected to the surface of the stress detection platform 1. A fixed rod 7 is symmetrically rotatably connected to the surface of the groove 5. The output shaft of the double-headed driving motor 6 is fixedly connected to the end face of a single fixed rod 7. The surfaces of the two fixed rods 7 are fixedly connected to a first pulley 8. A first belt body 9 is transmission-connected between the two first pulleys 8. A mounting plate 10 is symmetrically arranged in the groove 5. The bottom surfaces of the two mounting plates 10 are fixedly connected to a first supporting plate 11 in pairs. A rotating plate 12 is hingedly connected to a side surface of the first supporting plate 11 away from the mounting plate 10. A side surface of the rotating plate 12 away from the mounting plate 10 is fixedly connected to the fixed rod 7. The upper surfaces of the two mounting plates 10 are fixedly connected to a push plate 13 in pairs. Push grooves 14 are evenly opened on the upper surfaces of the push plates 13. Baffles 15 are fixedly connected to the surface of the stress detection platform 1 in pairs. The sides of the two baffles 15 that are close to each other are evenly fixedly connected to a support block 16. The support block 16 fits the surface of the metal pipe.

[0040] Specifically, first, the double-headed driving motor 6 can be connected to the external control panel, and then the double-headed driving motor 6 can be started through the control panel. At this time, the single output shaft of the double-headed driving motor 6 drives the connected fixed rod 7 to rotate during rotation, so that the fixed rod 7 can drive the first belt body 9 to rotate through the first pulley 8. At this time, the fixed rod 7 on the other side is rotated by the transmission force. With the rotation of the fixed rod 7, the rotating plate 12 can push the first supporting plate 11 in a rotational state, so that the first supporting plate 11 can push the mounting plate 10 and the pushing plate 13 to flip in a semi-arc shape. With the flipping of the pushing plate 13, the pushing groove 14 can push the fitted metal pipe, and the metal pipe can be pushed evenly and equidistantly. At this time, after the pushing plate 13 completes the arc motion, the pushing groove 14 can cancel the fit with the metal pipe. At this time, the metal pipe The surface can fit with the surface of the support block 16. Through the support of the support block 16, the metal tube can be limited to prevent rolling, which affects the equidistant progressive effect of the metal tube. As the metal tube moves, the baffle 15 can block the two ends of the metal tube to prevent the metal tube from tilting and shifting when pushed by the push groove 14, affecting the fit detection effect with the detection head 4. The first support plate 11 applies force to push the mounting plate 10 to flip. At this time, the mounting plate 10 flips with the upper part of the rotating plate 12 as the center, so that the mounting plate 10 can support and drive the push plate 13 to push the metal tube upward, so that the metal tube can show an equidistant movement effect when pushed. At this time, after the movement is completed, the metal tube can be conveniently fitted on the surface of the detection head 4 for detection, thereby achieving the effect of equidistant progressive feeding.

[0041] The placement component includes a connecting plate 17, which is fixedly connected to the surface of the baffle 15 in pairs, and the surfaces of the two connecting plates 17 are rotatably connected with screws 18. The surfaces of the two screws 18 and the fixed rod 7 are fixedly connected with second pulleys 19, and the three second pulleys 19 are respectively connected with second belt bodies 20 in a transmission manner. The surfaces of the two screws 18 are threadedly connected with a support shell 21, and the inner wall of the support shell 21 is fixedly connected with a second support plate 22. The surface of the second support plate 22 is penetrated by a guide groove 23, and the surface of the guide groove 23 is provided with half gears 24 in pairs. The side of the half gears 24 away from each other is in contact with the inner wall of the support shell 21, and the surface between the two sides of the half gears 24 close to each other is fixedly connected with a placement plate 25.

[0042] Specifically, when inspecting the metal pipe, the detection head 4 needs to be placed to reduce the manual operation time of the inspector. The connecting wire 3 is matched to pass through the surface of the support shell 21, and then the connecting wire 3 passing through the support shell 21 can be clamped and installed with the placement plate 25. At this time, the detection head 4 and the connecting wire 3 can be electrically connected and installed. Then, in the process of the double-headed drive motor 6 advancing the metal pipe to operate, the other single output end of the double-headed drive motor 6 can be set through the control panel to drive the second pulley 19. At this time, the double-headed drive motor 6 can drive the second pulley 19 to adapt to the second belt body 20 through the fixed rod 7 to drive the screw 18 to rotate. As the two screws 18 rotate, the support shell 21 can be subjected to thread transmission force, and since the number of screws 18 is two, the support shell 21 can be prevented from being subjected to a single thread transmission force. In the case of skewed and flipped, it is impossible to move linearly. At this time, the support shell 21 can drive the connecting line 3 and the detection head 4 to move on the surface of the metal pipe during the movement, and can present the effect of detecting different distances on the surface of the metal pipe, making the detection more comprehensive. The screw 18, the support shell 21, and the placement plate 25 are arranged to cooperate with each other. When the screw 18 is driven and rotated by the second pulley 19 and the second belt body 20, the support shell 21 is moved by the driving force of the thread. At this time, the support shell 21 can drive the position of the connecting line 3 that is clamped with the placement plate 25 to move. At this time, the placement plate 25 can place the connecting line 3 and the detection head 4 so that the connecting line 3 and the detection head 4 can detect different distances on the surface of the metal pipe, reducing manual participation, thereby reducing the error caused by manual holding and improving accuracy.

[0043] The steering assembly includes a transmission gear 26, which is rotatably connected to the inner wall of the support shell 21. The transmission gear 26 is meshed with the half gear 24. A first bevel gear 27 is fixedly connected to the surface of the transmission gear 26 away from the support shell 21. A second bevel gear 28 is meshed with the surface of the first bevel gear 27. The second bevel gear 28 is rotatably connected to the top surface of the inner wall of the support shell 21. A bevel rack 29 is meshed with the side of the second bevel gear 28 away from the first bevel gear 27. Both sides of the bevel rack 29 are fixedly connected to the baffle 15. The bevel rack 29 passes through the surface of the support shell 21. A limiting groove 30 is provided on the surface of the support shell 21. A limiting rod 31 is fixedly connected to the sides of the two half gears 24 away from each other.

[0044] Specifically, when the detection head 4 needs to detect different positions on the surface of the metal pipe, when the position of the support shell 21 moves, the second bevel gear 28 is meshed and rotated by the bevel rack 29 as the support shell 21 moves, so that the second bevel gear 28 is in a rotating state, and can mesh with the first bevel gear 27 as the second bevel gear 28 rotates. At this time, the first bevel gear 27 can drive the transmission gear 26 to rotate when it is subjected to the rotational force of the second bevel gear 28. As the transmission gear 26 rotates, the half gear 24 can be subjected to the meshing transmission force of the transmission gear 26 to flip the angle. As the flipping angle of the transmission gear 26 changes, the placement plate 25 can be clamped to the connection line 3, and the detection angle of the detection head 4 changes. At this time, the support shell 21 can adapt to the wave-shaped surface of the metal pipe during movement. The detection effect and the difficulty of operation are improved. The half gear 24, the transmission gear 26, the first bevel gear 27, and the second bevel gear 28 are matched with each other. In the process of the support shell 21 cooperating with the screw rod 18 to move, the second bevel gear 28 at this time can be driven to rotate in mesh with the bevel rack 29, so that the support shell 21 can conveniently drive the detection head 4 to detect different positions of the metal pipe during the movement. With the rotation of the second bevel gear 28, the first bevel gear 27 and the transmission gear 26 can be driven to rotate, and the angle of the half gear 24 is driven by the transmission gear 26 to change, so that the position of the detection head 4 can be flipped during the linear movement process, thereby achieving the effect of detecting multiple angles, making the detection more comprehensive. When the half gear 24 drives the angle of the detection head 4 to change, the second support plate 22 at this time can conveniently support the half gear 24 to prevent the half gear 24 from being dislocated due to the angle change caused by the gravity of the detection head 4. At the same time, during the rotation of the half gear 24, the limit rod 31 can slide in the limit groove 30 to improve the stability of the flipping and reduce shaking, thereby achieving the effect of stable support and playing the role of auxiliary support.

[0045] The pushing groove 14 is in the shape of an inverted trapezoid.

[0046] Specifically, by setting the pushing groove 14 in an inverted trapezoidal shape, the pushing plate 13 can improve the limiting effect on the metal pipe when pushing the metal pipe to move, thereby preventing rolling deviation.

[0047] Two baffles 15 are respectively located at two ends of the metal tube.

[0048] Specifically, by arranging the baffles 15 at both ends of the metal tube, the metal tube can be limited, and can move better, thereby improving accuracy.

[0049] The support blocks 16 are in groups of two, and the support blocks 16 are made of rubber and are trapezoidal in shape.

[0050] Specifically, the support blocks 16 are arranged in groups of two and are made of a rubber trapezoidal shape, so that when the support blocks 16 support the metal pipe, the rubber material and the trapezoidal shape improve the limiting effect and reduce the rolling and skewing of the metal pipe.

[0051] The placement plate 25 and the connecting line 3 are connected by snapping.

[0052] Specifically, the placement plate 25 is connected to the connecting wire 3 by a snap-fit ​​connection, so that the placement plate 25 can better limit the connecting wire 3 to prevent the connecting wire 3 from being dislocated and affecting the detection effect of the detection head 4.

[0053] The limiting rod 31 is located in the limiting groove 30 .

[0054] Specifically, by setting the limiting rod 31 in the limiting groove 30, the limiting rod 31 can cooperate with the limiting groove 30 to improve the stability of the half gear 24 and prevent the half gear 24 from shaking.

[0055] The limiting groove 30 is in a semi-arc shape.

[0056] Specifically, by setting the limiting rod 30 in a semi-arc shape, the limiting rod 31 can better cooperate with the rotational movement of the half gear 24 when cooperating with the movement of the half gear 24, thereby obtaining the auxiliary movement of the limiting groove 30 and improving stability.

[0057] The above implementation works as follows:

[0058] The initialization steps are as follows:

[0059] The inspectors will electrically connect the stress detection platform 1, the detection device body 2, the connecting wire 3 and the detection head 4 and check whether they are in good condition. Then, the metal structural pipe to be detected can be placed on one side of the stress detection platform 1. Finally, the metal pipe can be placed on the surface of the stress detection platform 1, ready for progressive operation.

[0060] The working steps are as follows:

[0061] As attached Figure 1-4 It is shown that, first, when the metal structure pipe needs to be inspected, the inspector places the metal structure pipes one by one on the surface of the stress inspection platform 1. When performing the progressive operation, the double-head drive motor 6 can be connected and started through the external control panel. At this time, the single output shaft of the double-head drive motor 6 drives the connected fixed rod 7 to rotate when rotating;

[0062] When the fixing rod 7 is rotated by force, the fixing rod 7 can be driven by the first belt body 9 through the first pulley 8. At this time, the fixing rod 7 on the other side is rotated by the transmission force. With the rotation of the fixing rod 7, the rotating plate 12 can push the first supporting plate 11 in a rotational shape. At the same time, since the first supporting plate 11 and the rotating plate 12 are rotatably connected, the rotating plate 12 can push and support the first supporting plate 11 when it is subjected to the continuous rotation force of the fixing rod 7, so that the first supporting plate 11 can push the mounting plate 10 and the pushing plate 13 to flip. With the flipping of the pushing plate 13, the pushing plate 13 pushes the metal tube through the pushing groove 14, and the metal tube is ejected from the surface of the support block 16, and the fit with the support block 16 is cancelled. At this time, the metal tube can be supported by the surface of the pushing groove 14. The pushing groove 14 can push the metal tube evenly and equidistantly. At this time, after the pushing plate 13 completes the arc motion, the metal tube The metal tube is fitted with the surface of the support block 16. At this time, the metal tube is supported and positioned by the support block 16, so that the push groove 14 can cancel the fit with the metal tube, which can avoid the metal tube from skewing and shaking, affecting the effect of equidistant pushing. Subsequently, the metal tube is positioned by the support block 16 and the push plate 13 is rotated. At this time, the push plate 13 can continuously push the metal tubes equidistantly distributed on the surface of the support block 16 through the push groove 14, so as to achieve the effect of continuous equidistant progressive advancement. The support of the support block 16 on all sides of the bottom surface of the metal tube facilitates the support block 16 to limit the metal tube to prevent rolling and affect the equidistant progressive effect of the metal tube. As the metal tube moves, the baffle 15 can block the two ends of the metal tube to prevent the metal tube from skewing and deviating when pushed by the push groove 14, affecting the fit detection effect with the detection head 4. In this way, the progressive feeding effect of the metal tube is completed.

[0063] As attached Figure 4-6 At the same time, when inspecting the metal pipe, by placing the detection head 4 on the surface of the metal pipe for automatic inspection, the manual operation time of the inspection personnel holding the detection head 4 can be reduced, and the labor cost can be reduced. The inspection personnel hold the connecting wire 3 and pass the connecting wire 3 through the surface of the supporting shell 21. Then, the connecting wire 3 passing through the supporting shell 21 can be clamped and installed with the placement plate 25. At this time, the detection head 4 and the connecting wire 3 can be electrically connected and installed;

[0064] After the connection line 3 and the detection head 4 are installed, during the operation of the double-headed driving motor 6 advancing into the metal pipe, the other single output end of the double-headed driving motor 6 can be set through the control panel to drive the second pulley 19. At this time, the double-headed driving motor 6 can drive the second pulley 19 to rotate through the fixed rod 7, so that the second pulley 19 transmits the second belt body 20 to drive the screw 18 to rotate. With the rotation of the two screws 18, the support shell 21 can be subjected to the thread transmission force, and since there are two screws 18, it can be prevented that the support shell 21 is skewed and flipped by a single thread transmission force, so that it cannot move linearly. At this time, the support shell 21 can drive the connection line 3 and the detection head 4 to move on the surface of the metal pipe during the movement, showing the effect of detecting different positions on the surface of the metal pipe, making the detection more comprehensive, and the screw 18 can be reversely rotated by the set double-headed driving motor 6. At this time, the support shell 21 can reciprocate on the surface of the screw 18 to improve the detection efficiency;

[0065] As attached Figure 7-8 Finally, when the detection head 4 needs to detect different positions on the surface of the metal pipe, during the movement of the support shell 21;

[0066] The second support plate 22 can drive the second bevel gear 28 to change its position during movement. At this time, the second bevel gear 28 is meshed and driven by the bevel rack 29 as the support shell 21 moves, so that the second bevel gear 28 is in a rotating state. As the second bevel gear 28 rotates, it can mesh and transmit the first bevel gear 27. At this time, the first bevel gear 27 can drive the transmission gear 26 to rotate when it is subjected to the rotational force of the second bevel gear 28. As the transmission gear 26 rotates, the half gear 24 can be subjected to the meshing transmission force of the transmission gear 26 and flip the angle. At this time, the surface of the second support plate 22 and the inner wall of the support shell 21 are placed in contact with each other, so that the half gear 24 can slide on the surface of the second support plate 22 when it is transmitted, and at the same time, the half gear 24 slides on the inner wall of the support shell 21, so that as the flipping angle of the transmission gear 26 changes, and the limiting rod 31 fixed on the surface of the half gear 24 is in the limiting groove 30, the half gear 24 rotates. During the process, the limiting rod 31 can slide in the limiting groove 30. At this time, the limiting rod 31 can cooperate with the limiting groove 30 to limit the half gear 24 to prevent the half gear 24 from being dislocated. In the process of flipping the half gear 24, the placement plate 25 can clamp the connecting line 3 and the detection head 4 to change the detection angle. In addition, since the material of the connecting line 3 is relatively soft, when the connecting line 3 and the detection head 4 are rotated to the position adapted to the surface of the metal pipe, when they are against the bevel rack 29, the connecting line 3 can be slightly bent by the pressure of the bevel rack 29. In addition, since the connecting line 3 is clamped on the surface of the placement plate 25, the connecting line 3 can be adapted to slide up and down on the surface of the groove 5 when cooperating with the detection head 4 for rotation detection, so as to cooperate with the detection head 4 for metal pipes of different diameters. The applicability is improved. At this time, the support shell 21 can adapt to the wave-shaped surface of the metal pipe for movement detection during the movement, thereby improving the detection effect and the difficulty of operation.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting internal stress of a metal structure pipe, used for detecting stress of the metal pipe, comprising a stress detection platform (1), a detection device body (2), a connecting wire (3) and a detection head (4), wherein the detection device body (2) is mounted on the surface of the stress detection platform (1), the connecting wire (3) is clamped on the surface of the detection device body (2), and the detection head (4) is clamped on the end face of the connecting wire (3) away from the detection device body (2), characterized in that: The surface of the stress detection platform (1) is evenly provided with metal tubes. The surface of the stress detection platform (1) is provided with a progressive component for maintaining consistency and reducing labor intensity. The progressive component comprises a groove (5). The groove (5) is opened on the surface of the stress detection platform (1). The surface of the stress detection platform (1) is fixedly connected to a double-headed driving motor (6). The surface of the groove (5) is symmetrically connected to a fixed rod (7). The output shaft of the double-headed driving motor (6) is fixedly connected to the end face of a single fixed rod (7). The surfaces of the two fixed rods (7) are both fixedly connected to a first pulley (8). A first belt body (9) is transmission-connected between the two first pulleys (8). The groove (5) is symmetrically provided with A mounting plate (10) is provided, the bottom surfaces of the two mounting plates (10) are fixedly connected in pairs with first support plates (11), the surface of the first support plate (11) on one side away from the mounting plate (10) is hingedly connected with a rotating plate (12), the surface of the rotating plate (12) on one side away from the mounting plate (10) is fixedly connected to a fixing rod (7), the upper surfaces of the two mounting plates (10) are fixedly connected with push plates (13) in pairs, the upper surfaces of the push plates (13) are evenly provided with push grooves (14), the surface of the stress detection platform (1) is fixedly connected with baffles (15) in pairs, the sides of the two baffles (15) close to each other are evenly fixedly connected with support blocks (16), the support blocks (16) are in contact with the surface of the metal pipe, A placement component for improving detection accuracy and reducing labor costs is arranged above the progressive component, the placement component comprising a connecting plate (17), the connecting plates (17) are fixedly connected to the surface of the baffle (15) in pairs, the surfaces of the two connecting plates (17) are rotatably connected with screw rods (18), the surfaces of the two screw rods (18) and the fixed rod (7) are fixedly connected with second pulleys (19), and the three second pulleys (19) are respectively connected with second belt bodies (20), the surfaces of the two screw rods (18) are threadedly connected with a support shell (21), the inner wall of the support shell (21) is fixedly connected with a second support plate (22), the surface of the second support plate (22) is penetrated with a guide groove (23), the surface of the guide groove (23) is provided with half gears (24) in pairs, the side of the half gears (24) away from each other is in contact with the inner wall of the support shell (21), and the surface between the two sides of the half gears (24) close to each other is fixedly connected with a placement plate (25); The upper surface of the stress detection platform (1) is provided with a steering assembly for improving the comprehensiveness of detection and improving the applicability of the placed components. The steering assembly includes a transmission gear (26). The transmission gear (26) is rotatably connected to the inner wall of the support shell (21). The transmission gear (26) is meshingly connected to the half gear (24). A first bevel gear (27) is fixedly connected to a surface of the transmission gear (26) away from the support shell (21). The surface of the first bevel gear (27) is meshingly connected to a second bevel gear (24). 8), the second bevel gear (28) is rotatably connected to the top surface of the inner wall of the support shell (21), the side of the second bevel gear (28) away from the first bevel gear (27) is meshingly connected with a bevel rack (29), both sides of the bevel rack (29) are fixedly connected to the baffle (15), the bevel rack (29) penetrates the surface of the support shell (21), the surface of the support shell (21) is provided with a limiting groove (30), and the sides of the two half gears (24) away from each other are fixedly connected to the limiting rod (31).

2. A device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The pushing groove (14) is in the shape of an inverted trapezoid.

3. The device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The two baffles (15) are respectively located at two ends of the metal tube.

4. The device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The support blocks (16) are provided in groups of two, and the support blocks (16) are provided in a trapezoidal shape made of rubber material.

5. The device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The placement plate (25) and the connecting line (3) are snap-connected.

6. The device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The limiting rod (31) is located in the limiting groove (30).

7. The device for detecting internal stress of a metal structure pipe according to claim 1, characterized in that: The limiting groove (30) is in a semi-arc shape.

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