Fatigue detection mechanism of seamless tube for container lashing bridge

Abstract

The utility model discloses a fatigue detection mechanism of a seamless tube for a container lashing bridge, which comprises a base, two fixing assemblies are arranged at the upper end of the base, each fixing assembly comprises two fixing blocks which are connected to the upper end of the base in a sliding mode, a sliding groove is formed in one side of each fixing block, and the sliding grooves are matched with the fixing blocks. A plurality of fixing plates are fixedly connected to the inner wall of the sliding groove, connecting plates are inserted into the inner walls of two of the fixing plates, limiting plates are fixedly connected to the sides, away from the fixing blocks, of the connecting plates, placing plates are fixedly connected to the sides, close to the limiting plates, of the fixing blocks, and sliding frames are slidably connected to the outer sides of the placing plates; the upper end of the sliding frame is fixedly connected with an abutting plate. Through the structure, the problem of insufficient clamping force caused by poor specification adaptability of a traditional clamp is effectively eliminated, the phenomenon of axial micro-slippage or radial deflection of a sample in the testing process is prevented, and the problem of accuracy of detection data caused by the phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology for seamless tubes, and in particular to a fatigue testing mechanism for seamless tubes used in container lashing bridges. Background Technology

[0002] The fatigue testing mechanism for seamless tubes used in container lashing bridges is a testing device specifically designed to evaluate the fatigue resistance of seamless steel tubes used in container lashing bridge structures under long-term cyclic loading. The core function of this mechanism is to simulate the stress state under actual working conditions by applying axial tensile loads to seamless tube samples, thereby determining key mechanical parameters such as fatigue strength and crack propagation rate.

[0003] Existing fatigue testing mechanisms for seamless tubes used in container lashing bridges suffer from insufficient matching between the testing fixtures and seamless tubes due to differences in tube specifications. This results in the seamless tubes not being securely fixed during testing, leading to micro-displacement or uneven stress distribution during tensile or fatigue testing. Ultimately, this negatively impacts the accuracy and repeatability of the test data. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a fatigue testing mechanism for seamless tubes used in container lashing bridges. Through the cooperation of a fixed block, sliding groove, fixed plate, connecting plate, limiting plate, placement groove, sliding frame and abutment plate, it effectively eliminates the problem of insufficient clamping force caused by poor specification adaptability of traditional fixtures, prevents axial micro-slippage or radial wobble of the sample during the test, and avoids the problem of inaccuracy of test data caused by this.

[0005] This utility model also provides a fatigue testing mechanism for a seamless tube used in container lashing bridges, comprising a base, with two fixing components at the upper end of the base. Each fixing component includes two fixing blocks slidably connected to the upper end of the base. A sliding groove is provided on one side of each fixing block, and multiple fixing plates are fixedly connected to the inner wall of the sliding groove. Connecting plates are inserted into the inner walls of two of the fixing plates. A limiting plate is fixedly connected to the side of the connecting plate away from the fixing block, and a placement plate is fixedly connected to the side of the fixing block near the limiting plate. A sliding frame is slidably connected to the outer side of the placement plate, and an abutment plate is fixedly connected to the upper end of the sliding frame. Through the cooperation of the fixing blocks, sliding groove, fixing plates, connecting plates, limiting plates, placement groove, sliding frame, and abutment plate, the problem of insufficient clamping force caused by poor specification adaptability of traditional fixtures is effectively eliminated, and the axial micro-slippage or radial wobble of the sample during the test is prevented, thus avoiding the problem of inaccurate test data.

[0006] The sliding frame and the abutment plate have an installation groove on one side. A friction pad is fixedly connected to the inner wall of the installation groove. Through the cooperation of the installation groove and the friction pad, the static friction between the fixing component and the outer wall of the seamless tube is significantly enhanced, which effectively improves the problem of clamping force attenuation caused by insufficient contact area or uneven pressure distribution in traditional rigid clamps.

[0007] A first mounting block is fixedly connected to the outer side of the placement plate. A fixing groove is provided on the side of the first mounting block away from the placement plate. A return spring is fixedly connected inside the fixing groove. A positioning block is fixedly connected to the side of the return spring away from the placement plate. Through the cooperation of the first mounting block, the fixing groove, the return spring and the positioning block, the positioning block is driven to make a smooth and controllable linear displacement movement along the motion trajectory defined by the fixing groove, so as to realize the precise adjustment function of the positioning block position in the mechanical system.

[0008] The sliding frame is fixedly connected to a second mounting block on the side near the first mounting block, and a positioning groove is fixedly connected to the side of the second mounting block near the positioning block. Through the cooperation of the positioning block, the second mounting block and the positioning groove, the axial position accuracy of the sliding frame on the placement plate is ensured, and the relative displacement under vibration conditions is effectively suppressed through the force distribution of surface contact.

[0009] A telescopic column is fixedly connected inside the fixed groove. The telescopic column is located inside the return spring. Through the cooperation of the telescopic column, the return spring and the positioning block, the positioning block can achieve uniform linear motion with no jamming and low vibration on the preset path.

[0010] The upper end of the base is provided with a detection component, which includes two limiting grooves opened at the upper end of the base. The inner wall of the limiting groove is rotatably connected to a positive and negative lead screw. The outer side of the positive and negative lead screw is threaded with two limiting blocks. The upper end of the limiting block is fixedly connected to the lower end of the fixed block. Through the cooperation of the limiting groove, the positive and negative lead screw and the limiting block, the synchronous, stable and precise linear displacement movement of the two fixed components along the lead screw axis is realized.

[0011] One end of one of the positive and negative lead screws is fixedly connected to a driving rotating tube, and one end of the other positive and negative lead screw is fixedly connected to a secondary rotating tube. One end of the driving and secondary rotating tubes passes through and is rotatably connected to the base. The outer side of the end of the driving and secondary rotating tubes passing through the base is connected to a transmission belt via a transmission wheel. The end of the driving rotating tube away from the base is fixedly connected to a motor. Through the cooperation of the main rotating tube, the secondary rotating tube, the transmission belt, and the motor, the smoothness of the power output is ensured, and the precise control of the speed and direction of the positive and negative lead screws is achieved, thus providing a stable and reliable driving force source for the continuous rotation of the positive and negative lead screws.

[0012] A control panel is fixedly connected to the outside of the base. The control panel is electrically connected to the motor via wires. The control panel not only ensures the convenience of equipment operation, but also improves the accuracy and response speed of control, enabling the operator to efficiently manage and monitor the operating status of the equipment.

[0013] Compared with existing technologies, the fatigue testing mechanism for seamless tubes used in container lashing bridges effectively eliminates the problem of insufficient clamping force caused by poor specification adaptability of traditional fixtures through the cooperation of fixed blocks, sliding grooves, fixed plates, connecting plates, limiting plates, placement grooves, sliding frames and abutment plates. It also prevents axial micro-slippage or radial wobble of the sample during the test, thus avoiding the problem of inaccurate test data caused by these components. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the main body of the device of this utility model;

[0015] Figure 2 This is a structural diagram of the fixing component of this utility model;

[0016] Figure 3 This is a half-sectional view of the first mounting block of this utility model;

[0017] Figure 4 This is a structural diagram of the detection component of this utility model.

[0018] Legend:

[0019] 100. Base; 200. Fixing assembly; 201. Fixing block; 202. Sliding groove; 203. Fixing plate; 204. Connecting plate; 205. Limiting plate; 206. Placement plate; 207. Sliding frame; 208. Abutment plate; 209. Mounting groove; 210. Friction pad; 211. First mounting block; 212. Fixing groove; 213. Return spring; 214. Positioning block; 215. Second mounting block; 216. Positioning groove; 217. Telescopic column; 300. Detection assembly; 301. Limiting groove; 302. Positive and negative lead screws; 303. Limiting block; 304. Active rotating tube; 305. Secondary rotating tube; 306. Transmission belt; 307. Motor; 400. Control panel. Detailed Implementation

[0020] Reference Figure 1 , Figure 2 and Figure 3This utility model relates to a fatigue testing mechanism for seamless tubes used in container lashing bridges. It includes a base 100, with two fixing components 200 mounted on the upper end of the base 100. Each fixing component 200 includes two fixing blocks 201 slidably connected to the upper end of the base 100. A sliding groove 202 is formed on one side of each fixing block 201. Multiple fixing plates 203 are fixedly connected to the inner wall of the sliding groove 202. Connecting plates 204 are inserted into the inner walls of two fixing plates 203. A limiting plate 205 is fixedly connected to the side of the connecting plate 204 away from the fixing block 201. A placement plate 206 is fixedly connected to the side of the fixing block 201 near the limiting plate 205. A sliding frame 207 is slidably connected to the outer side of the placement plate 206. An abutment plate 208 is fixedly connected to the upper end of the sliding frame 207. A mounting groove 209 is provided on one side of the moving frame 207 and the abutment plate 208. A friction pad 210 is fixedly connected to the inner wall of the mounting groove 209. A first mounting block 211 is fixedly connected to the outer side of the placement plate 206. A fixing groove 212 is provided on the side of the first mounting block 211 away from the placement plate 206. A return spring 213 is fixedly connected inside the fixing groove 212. A positioning block 214 is fixedly connected to the side of the return spring 213 away from the placement plate 206. A second mounting block 215 is fixedly connected to the side of the sliding frame 207 near the first mounting block 211. A positioning groove 216 is fixedly connected to the side of the second mounting block 215 near the positioning block 214. A telescopic column 217 is fixedly connected inside the fixing groove 212. The telescopic column 217 is located inside the return spring 213.

[0021] Specifically, the operator needs to place the seamless tube to be processed stably on the placement plate 206 of the equipment workbench, ensuring that one side of the seamless tube is completely in contact with the inner plane of the fixing block 201. Then, press the top of the positioning block 214 to make it overcome the spring resistance and completely disengage from the positioning groove 216. At this time, the operator needs to push the sliding frame 207 smoothly along the guide rail towards the seamless tube until the working surface of the abutment plate 208 contacts the seamless tube. Then, slowly release the positioning block 214, under the elastic force of the return spring 213 and the guiding action of the telescopic column 217. When the positioning block 214 is lowered, it will precisely spring back and re-insert into the positioning groove 216 of the second mounting block 215, thus reliably fixing the sliding frame 207. After this step is completed, the operator will pull the connecting plate 204 horizontally out of the slot of the fixing plate 203 and then slide it vertically downward along the track of the sliding groove 202. At this time, the limiting plate 205 linked with the connecting plate 204 will move down synchronously until its lower surface is in close contact with the top of the seamless tube. Through the coordinated operation of this series of adjustment mechanisms, the stable clamping and fixing of seamless tubes of different diameter specifications can be achieved.

[0022] Reference Figure 1 and Figure 4A detection component 300 is provided at the upper end of the base 100. The detection component 300 includes two limiting grooves 301 formed at the upper end of the base 100. A positive and negative lead screw 302 is rotatably connected to the inner wall of the limiting groove 301. Two limiting blocks 303 are threaded to the outer side of the positive and negative lead screw 302. The upper end of the limiting block 303 is fixedly connected to the lower end of the fixing block 201. One end of one positive and negative lead screw 302 is fixedly connected to an active rotating tube 304, and one end of the other positive and negative lead screw 302 is fixedly connected to... There is a secondary rotating tube 305, a primary rotating tube 304, and one end of the secondary rotating tube 305 is rotatably connected to the base 100. The outer side of the end of the primary rotating tube 304 and the secondary rotating tube 305 that passes through the base 100 is connected to a transmission belt 306 via a transmission wheel. The end of the primary rotating tube 304 that is away from the base 100 is fixedly connected to a motor 307. The outer side of the base 100 is fixedly connected to a control panel 400. The control panel 400 is electrically connected to the motor 307 via wires.

[0023] Specifically, after the seamless tube is securely fixed, the operator needs to press the motor 307 start button on the control panel 400. At this time, the control system will send a start signal to the motor 307. After being powered on, the motor 307 begins to rotate, and its output shaft directly drives the active rotating tube 304 to rotate at a constant speed through the coupling. The rotational power of the active rotating tube 304 is transmitted to the secondary rotating tube 305 through the transmission belt 306, ensuring that the two rotating tubes maintain synchronous speed. After receiving rotational power, the positive and negative lead screws 302 at the ends of the two rotating tubes begin to rotate synchronously. Due to the special reverse thread design, the two limit blocks 303 installed on the positive and negative lead screws 302 will move in opposite directions along the guide rail, thereby stretching the seamless tube.

[0024] Working principle: The operator needs to place the seamless tube to be processed stably on the placement plate 206 of the equipment workbench, ensuring that one side of the seamless tube is completely in contact with the inner plane of the fixing block 201. Then, press the top of the positioning block 214 to make it completely disengage from the positioning groove 216 over the spring resistance. At this time, the operator needs to push the sliding frame 207 smoothly along the guide rail towards the seamless tube until the working surface of the abutment plate 208 contacts the seamless tube. Then, slowly release the positioning block 214, under the elastic force of the return spring 213 and the guiding action of the telescopic column 217. When the positioning block 214 is used, it will precisely spring back and re-insert into the positioning groove 216 of the second mounting block 215, thus reliably fixing the sliding frame 207. After this step is completed, the operator will pull the connecting plate 204 horizontally out of the slot of the fixing plate 203 and then slide it vertically downward along the track of the sliding groove 202. At this time, the limiting plate 205 linked with the connecting plate 204 will move down synchronously until its lower surface is in close contact with the top of the seamless tube. Through the coordinated operation of this series of adjustment mechanisms, the stable clamping and fixing of seamless tubes of different diameter specifications can be achieved.

Claims

1. A fatigue testing mechanism for seamless tubing used in container lashing bridges, characterized in that, The system includes a base (100), and two fixing components (200) are provided on the upper end of the base (100). The fixing components (200) include two fixing blocks (201) slidably connected to the upper end of the base (100). A sliding groove (202) is provided on one side of the fixing block (201). Multiple fixing plates (203) are fixedly connected to the inner wall of the sliding groove (202). A connecting plate (204) is inserted into the inner wall of two of the fixing plates (203). A limiting plate (205) is fixedly connected to the side of the connecting plate (204) away from the fixing block (201). A placement plate (206) is fixedly connected to the side of the fixing block (201) close to the limiting plate (205). A sliding frame (207) is slidably connected to the outer side of the placement plate (206). An abutment plate (208) is fixedly connected to the upper end of the sliding frame (207).

2. The fatigue testing mechanism for seamless tubing used in container lashing bridges according to claim 1, characterized in that, The sliding frame (207) and the abutment plate (208) have an installation groove (209) on one side, and a friction pad (210) is fixedly connected to the inner wall of the installation groove (209).

3. The fatigue testing mechanism for seamless tubes used in container lashing bridges according to claim 1, characterized in that, A first mounting block (211) is fixedly connected to the outer side of the placement plate (206). A fixing groove (212) is provided on the side of the first mounting block (211) away from the placement plate (206). A reset spring (213) is fixedly connected inside the fixing groove (212). A positioning block (214) is fixedly connected on the side of the reset spring (213) away from the placement plate (206).

4. The fatigue testing mechanism for seamless tubes used in container lashing bridges according to claim 2, characterized in that, The sliding frame (207) is fixedly connected to a second mounting block (215) on the side near the first mounting block (211), and the second mounting block (215) is fixedly connected to a positioning groove (216) on the side near the positioning block (214).

5. The fatigue testing mechanism for seamless tubes used in container lashing bridges according to claim 3, characterized in that, The fixed groove (212) is fixedly connected to a telescopic column (217), which is located inside the return spring (213).

6. The fatigue testing mechanism for seamless tubing used in container lashing bridges according to claim 1, characterized in that, The upper end of the base (100) is provided with a detection component (300). The detection component (300) includes two limiting grooves (301) opened at the upper end of the base (100). The inner wall of the limiting groove (301) is rotatably connected to a positive and negative lead screw (302). The outer side of the positive and negative lead screw (302) is threadedly connected to two limiting blocks (303). The upper end of the limiting block (303) is fixedly connected to the lower end of the fixing block (201).

7. The fatigue testing mechanism for seamless tubes used in container lashing bridges according to claim 6, characterized in that, One end of one of the positive and negative lead screws (302) is fixedly connected to a drive rotating tube (304), and one end of the other positive and negative lead screw (302) is fixedly connected to a secondary rotating tube (305). One end of the drive rotating tube (304) and the secondary rotating tube (305) are rotatably connected to the base (100). The outer side of the end of the drive rotating tube (304) and the secondary rotating tube (305) that are connected to the base (100) is connected to a transmission belt (306) via a transmission wheel. The end of the drive rotating tube (304) that is away from the base (100) is fixedly connected to a motor (307).

8. The fatigue testing mechanism for seamless tubes used in container lashing bridges according to claim 1, characterized in that, A control panel (400) is fixedly connected to the outside of the base (100), and the control panel (400) is electrically connected to the motor (307) via wires.

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