Limiting structure for shear performance detection of corrugated steel web
Patent Information
- Application Number
- CN202522390739.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-11
AI Technical Summary
The existing shear performance testing device for corrugated steel webs lacks a limiting structure, which makes the corrugated steel webs prone to multi-directional displacement during the application of shear loads. This leads to deviations in the force transmission of the testing instrument, making it unable to accurately act on the preset shear testing area and affecting the accuracy of the test data.
The system employs an adjustment and limiting mechanism, including a combination of a lead screw, a threaded rod, a servo motor, and a limiting plate, to achieve precise positioning and clamping of the corrugated steel web. Combined with a spring telescopic rod and a flexible contact plate, it ensures uniform distribution of clamping force and accurate data transmission.
It enables the compatibility testing of corrugated steel webs of different lengths and specifications, avoids displacement deviations during the testing process, ensures the accuracy of test data and the safety of components, and improves the versatility and reliability of the testing equipment.
Smart Images
Figure CN224933738U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated steel web plate testing technology, and in particular to a limiting structure for testing the shear resistance of corrugated steel web plates. Background Technology
[0002] Corrugated steel webs are plate-shaped components made of steel through cold bending or hot rolling into continuous corrugations. They are mainly used as the web portion of steel structures such as bridges and factories. Their core function is to withstand the shear forces generated by the structure, while also possessing lightweight and deformation resistance. Compared with traditional concrete webs or flat steel webs, their unique corrugated structure gives the product superior mechanical properties and engineering applicability, making them a commonly used key component in modern steel structure engineering.
[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing corrugated steel web shear performance testing devices lack a structure to limit the corrugated steel web, which makes the corrugated steel web prone to multi-directional displacement during the application of shear loads. This leads to deviations in the force transmission of the testing instrument, preventing it from acting on the preset shear testing area. Consequently, the core data such as the collected shear bearing capacity and shear deformation curve deviate from the actual performance of the component.
[0004] To address this, a limiting structure for testing the shear resistance of corrugated steel webs is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a limiting structure for testing the shear performance of corrugated steel webs. This solves the problem that existing corrugated steel web testing methods lack a limiting structure for the corrugated steel web, which leads to the corrugated steel web easily undergoing multi-directional displacement during the application of shear loads. This causes deviations in the force transmission of the testing instrument, preventing it from acting on the preset shear testing area. Consequently, the core data such as the collected shear bearing capacity and shear deformation curve deviate from the actual performance of the component.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a limiting structure for testing the shear resistance of corrugated steel web, comprising a worktable, an adjustment mechanism on the top of the worktable, a limiting mechanism threadedly connected to the inner side of the adjustment mechanism, the limiting mechanism comprising a support plate, a mounting plate, three spring telescopic rods, a clamping plate, a mounting hole, a pressure sensor, and a PLC controller, the support plate being welded to the top of the adjustment mechanism, the mounting plate being welded to the top and bottom of the support plate surface, the spring telescopic rods being welded to the surface of the mounting plate, the clamping plate being welded to the telescopic end of the front side of the spring telescopic rods, the mounting hole being opened on the inner side of the bottom support plate, the pressure sensor being installed on the inner side of the mounting hole, and the PLC controller being installed on the front side of the worktable.
[0007] Preferably, the adjustment mechanism includes a moving groove, a rotating shaft, a lead screw, a limiting plate, a threaded rod, a threaded sleeve, and three servo motors, with the moving groove located on the inner side of the top of the worktable.
[0008] Preferably, the rotating shaft is installed on the inner side of the moving groove and the inner side of the limiting plate, the lead screw is fixedly connected to both sides of the bottom rotating shaft, and the right side, the rear side of the left rear threaded rod and the rear side of the right rear threaded rod of the lead screw are all connected to the connecting rotating shaft by a flat key. The bottom of the limiting plate is welded with a threaded block, which is threadedly connected to the surface of the lead screw.
[0009] Preferably, the threaded rod is fixedly connected to both sides of the left rotating shaft and both sides of the right rotating shaft, the threaded sleeve is threadedly connected to the surface of the threaded rod, the support plate is welded to the top of the threaded sleeve, the servo motors are respectively installed on the right side of the worktable, the rear side of the left limiting plate and the rear side of the right limiting plate, the output end of the left side of the right servo motor passes through the worktable and is fixedly connected to the right side of the connecting shaft, the output end of the front side of the left rear servo motor passes through the left rear limiting plate and is fixedly connected to the rear side of the connecting shaft, and the output end of the front side of the right rear servo motor passes through the right rear limiting plate and is fixedly connected to the rear side of the connecting shaft.
[0010] Preferably, the clamping surface of the clamping plate is fitted with a buffer pad, and the surface of the buffer pad is engraved with anti-slip texture.
[0011] Preferably, a reinforcing ring is welded to the side of the spring telescopic rod near the clamping plate, and the surface of the reinforcing ring is coated with an anti-corrosion coating.
[0012] Preferably, a support column is welded to the chamfered corner of the bottom of the workbench, and the bottom of the support column is engraved with anti-slip texture.
[0013] Preferably, the contact surface of the pressure sensor is fixedly connected to a flexible contact piece, which is made of nitrile rubber.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The adjustment mechanism of this application adopts a double threaded transmission structure of lead screw plus threaded block and threaded rod plus threaded sleeve, and is driven by three independent servo motors. It can realize the lateral translation of the limit plate along the moving groove and the longitudinal adjustment of the support plate along the threaded rod. This adjustment capability allows the limit structure to be adapted to corrugated steel webs of different lengths, improving the versatility and applicability of the testing equipment. The servo motor is rigidly connected to the lead screw and threaded rod through the connecting shaft, which can realize the control of the adjustment displacement. At the same time, the matching structure of the limit plate and the moving groove and the self-locking characteristics of the threaded transmission can ensure that the structure is stable after adjustment, avoiding displacement due to external force during the testing process, and providing a reliable positioning basis for the clamping of the subsequent limit mechanism.
[0016] 2. The limiting mechanism of this application adopts a double mounting plate layout with a top and bottom, and with the help of three spring telescopic rods, it applies force evenly to the clamping plate, so that the clamping force is evenly distributed along the height direction of the corrugated steel web, effectively conforming to its corrugated contour and forming a reliable clamping. The elasticity of the spring telescopic rods provides a certain buffer margin during the clamping process, avoiding surface dents or deformation of the component caused by rigid clamping. The pressure sensor built into the bottom support plate can monitor the clamping force in real time and transmit the data to the PLC controller, which makes it easy for operators to control the clamping force, avoiding positioning failure due to excessively loose clamping, and preventing pre-damage to the component due to excessively tight clamping. Attached Figure Description
[0017] Figure 1 This is an overall structural diagram of the limiting structure for testing the shear resistance of corrugated steel webs according to this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the spring telescopic rod of this utility model;
[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the flexible contact sheet of this utility model.
[0022] In the diagram, 1. Workbench; 2. Adjustment mechanism; 21. Moving slot; 22. Rotating shaft; 23. Lead screw; 24. Limiting plate; 25. Threaded rod; 26. Threaded sleeve; 27. Servo motor; 3. Limiting mechanism; 31. Support plate; 32. Mounting plate; 33. Spring telescopic rod; 34. Clamping plate; 35. Mounting hole; 36. Pressure sensor; 37. PLC controller; 4. Buffer pad; 5. Reinforcing ring; 6. Support column; 7. Flexible contact piece. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5 The present invention provides the following technical solution:
[0025] A limiting structure for testing the shear resistance of corrugated steel web includes a workbench 1. An adjustment mechanism 2 is provided on the top of the workbench 1. A limiting mechanism 3 is threadedly connected to the inner side of the adjustment mechanism 2. The limiting mechanism 3 includes a support plate 31, a mounting plate 32, three spring telescopic rods 33, a clamping plate 34, a mounting hole 35, a pressure sensor 36, and a PLC controller 37. The support plate 31 is welded to the top of the adjustment mechanism 2. The mounting plate 32 is welded to the top and bottom of the surface of the support plate 31. The spring telescopic rods 33 are welded to the surface of the mounting plate 32. The clamping plate 34 is welded to the telescopic end of the front side of the spring telescopic rods 33. The mounting hole 35 is opened on the inner side of the bottom support plate 31. The pressure sensor 36 is installed on the inner side of the mounting hole 35. The PLC controller 37 is installed on the front side of the workbench 1.
[0026] In this embodiment: the workbench 1 can support and limit the adjustment mechanism 2 and the limiting mechanism 3; the support plate 31 can support and limit the mounting plate 32; the mounting plate 32 can provide mounting points for the spring telescopic rod 33; the clamping plate 34 can directly contact and clamp the corrugated steel web; the mounting hole 35 provides mounting space for the pressure sensor 36; the pressure sensor 36 can monitor the pressure value in real time during the clamping process and feed the data back to the PLC controller 37; the PLC controller 37 can receive the detection signal from the pressure sensor 36 and control the servo motor 27.
[0027] Specifically, such as Figure 4 As shown, the adjustment mechanism 2 includes a moving groove 21, a rotating shaft 22, a lead screw 23, a limiting plate 24, a threaded rod 25, a threaded sleeve 26, and three servo motors 27. The moving groove 21 is located on the inner side of the top of the worktable 1.
[0028] Specifically, such as Figure 4 As shown, the rotating shaft 22 is installed on the inner side of the moving groove 21 and the inner side of the limiting plate 24 respectively. The lead screw 23 is fixedly connected to both sides of the bottom rotating shaft 22. The right side, the rear side of the left rear threaded rod 25 and the rear side of the right rear threaded rod 25 of the lead screw 23 are all connected to the connecting shaft by a flat key. The bottom of the limiting plate 24 is welded with a threaded block, which is threadedly connected to the surface of the lead screw 23.
[0029] Specifically, such as Figure 4As shown, threaded rods 25 are fixedly connected to both sides of the left rotating shaft 22 and the right rotating shaft 22 respectively. Threaded sleeves 26 are threadedly connected to the surface of threaded rods 25. Support plates 31 are welded to the top of threaded sleeves 26. Servo motors 27 are respectively installed on the right side of the worktable 1, the rear side of the left limiting plate 24, and the rear side of the right limiting plate 24. The output end of the left side of the right servo motor 27 passes through the worktable 1 and is fixedly connected to the right side of the connecting shaft. The output end of the front side of the left rear servo motor 27 passes through the left rear limiting plate 24 and is fixedly connected to the rear side of the connecting shaft. The output end of the front side of the right rear servo motor 27 passes through the right rear limiting plate 24 and is fixedly connected to the rear side of the connecting shaft.
[0030] In this embodiment: the movable groove 21 supports and limits the rotating shaft 22 and the lead screw 23, and causes the limiting plate 24 to move linearly in a preset direction. The rotating shaft 22 drives the lead screw 23 and the threaded rod 25 to rotate synchronously through its own rotation, causing the limiting plates 24 on both sides and the front and rear threaded sleeves 26 to move towards or away from each other, converting the rotational power of the servo motor 27 into linear adjustment power. The threaded engagement between the lead screw 23 and the threaded block at the bottom of the limiting plate 24 converts the rotational motion of the rotating shaft 22 into the transverse linear motion of the limiting plate 24 along the movable groove 21. The limiting plate 24 moves linearly along the movable groove 21 through the threaded... The block cooperates with the lead screw 23 to receive the lateral adjustment power to achieve its own position movement. The threaded rod 25 and the threaded sleeve 26 are threaded together to convert the rotational motion of the rotating shaft 22 into the linear motion of the threaded sleeve 26, which in turn drives the front and rear support plates 31 to move in opposite directions or away from each other. The threaded sleeve 26 and the threaded rod 25 cooperate to ensure the transmission of power and can drive the support plate 31 to support and move. The right servo motor 27 drives the lead screw 23 to rotate and controls the lateral adjustment of the limit plate 24. The left and right rear servo motors 27 drive the corresponding threaded rods 25 to rotate and control the longitudinal adjustment of the limit mechanism 3.
[0031] Specifically, such as Figure 5 As shown, the clamping surface of the clamping plate 34 is fitted with a buffer pad 4, and the surface of the buffer pad 4 is engraved with anti-slip texture.
[0032] Specifically, such as Figure 5 As shown, a reinforcing ring 5 is welded to the side of the spring telescopic rod 33 near the clamping plate 34, and the surface of the reinforcing ring 5 is coated with an anti-corrosion coating.
[0033] In this embodiment: by setting a buffer pad 4, it can conform to the surface contour of the corrugated steel web, reducing the scratching and squeezing damage to the surface of the component during clamping; by setting an anti-slip texture, the friction coefficient between the component and the corrugated steel web is increased, preventing the corrugated steel web from sliding due to shear load during the testing process; by setting a reinforcing ring 5, the structural strength of the connection between the two is enhanced; and by setting an anti-corrosion coating, corrosive media such as air and moisture can be isolated, slowing down the corrosion rate of the component.
[0034] Specifically, such as Figure 5 As shown, a support column 6 is welded to the chamfer at the bottom of the workbench 1, and the bottom of the support column 6 is engraved with anti-slip texture.
[0035] Specifically, such as Figure 5 As shown, a flexible contact piece 7 is fixedly connected to the contact surface of the pressure sensor 36. The flexible contact piece 7 is made of nitrile rubber.
[0036] In this embodiment: by setting support columns 6, the workbench 1 is supported and limited; by setting anti-slip textures, the friction between the workbench and the ground is increased; by setting flexible contact pieces 7, the pressure sensor 36 and the corrugated steel web are made into flexible contact, avoiding uneven force on the sensor caused by rigid contact and improving the accuracy of pressure detection data; by setting flexible contact pieces 7 to be made of nitrile rubber, which has strong oil resistance and aging resistance, it can adapt to the oil and other media that may exist in the detection environment and extend the service life of the sensor.
[0037] Working principle: First, the operator places the corrugated steel web to be inspected in the preset area on the top of the workbench 1. Then, according to the length specifications of the corrugated steel web to be inspected, the operator sends a control command to the right servo motor 27 through the PLC controller 37. After the right servo motor 27 starts, its left output end drives the bottom rotating shaft 22 and the lead screws 23 on both sides to rotate synchronously through the connecting shaft. Since the threaded block welded to the bottom of the limiting plate 24 is threadedly connected to the lead screw 23, the rotational motion of the lead screw 23 is converted into the transverse linear motion of the limiting plate 24 along the moving groove 21 on the top of the workbench 1. The moving groove 21 forms a guiding constraint on both sides of the limiting plate 24, ensuring that the limiting plate 24... 4. Move smoothly along the preset direction until the two side limit plates 24 move to a position that matches the transverse dimension of the corrugated steel web. After the transverse positioning is completed, the servo motor 27 stops running. The thread self-locking characteristic of the lead screw 23 keeps the limit plate 24 firmly in its current position. Then, after the transverse positioning is completed, the operator controls the left and right rear servo motors 27 respectively through the PLC controller 37. After the two servo motors 27 are started, their output ends drive the rotating shaft 22 and the threaded rod 25 inside the limit plate 24 to rotate synchronously through the corresponding connecting rotating shaft. The threaded sleeve 26 on the surface of the threaded rod 25 is threadedly engaged with the threaded rod 25, converting the rotational motion into the opposite linear motion of the threaded sleeve 26. The support plate 31 welded to the top of the threaded sleeve 26 moves synchronously with the threaded sleeve 26, thereby driving the mounting plate 32, spring telescopic rod 33, and clamping plate 34 to move as a whole until the clamping plate 34 is in contact with the part of the corrugated steel web to be clamped. At this time, the PLC controller 37 controls the servo motors 27 on both sides to stop. Afterwards, the spring telescopic rod 33 undergoes slight compression deformation due to contact, and its elastic force is transmitted to the surface of the component through the clamping plate 34 to form a clamping force. The buffer pad 4 sleeved on the clamping surface of the clamping plate 34 conforms to the contour of the corrugated steel web to avoid rigid contact that could damage the component. The anti-slip texture on the surface of the buffer pad 4 further increases friction to prevent the component from sliding during testing. At the same time, the bottom support... The pressure sensor 36 inside the mounting hole 35 of plate 31 contacts the component through a flexible contact piece 7 made of nitrile rubber. The flexible contact piece 7 ensures uniform pressure transmission. The pressure sensor 36 collects clamping force data in real time and transmits it to the PLC controller 37. The operator judges whether the clamping force meets the testing requirements based on the feedback data from the PLC controller 37. Finally, after the test is completed, the operator controls each servo motor 27 to rotate in reverse through the PLC controller 37, which drives the limit plate 24 to reset laterally, the threaded sleeve 26 to reset longitudinally, and the spring telescopic rod 33 to return to its natural state. The clamping plate 34 separates from the component, and the corrugated steel web plate that has been tested can be taken out, completing one test process.
[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A limiting structure for testing the shear resistance of corrugated steel web, comprising a worktable (1), characterized in that: An adjustment mechanism (2) is provided on the top of the workbench (1). The inner side of the adjustment mechanism (2) is threadedly connected to a limit mechanism (3). The limit mechanism (3) includes a support plate (31), a mounting plate (32), three spring telescopic rods (33), a clamping plate (34), a mounting hole (35), a pressure sensor (36), and a PLC controller (37). The support plate (31) is welded to the top of the adjustment mechanism (2). The mounting plate (32) is welded to the top and bottom of the surface of the support plate (31). The spring telescopic rods (33) are welded to the surface of the mounting plate (32). The clamping plate (34) is welded to the telescopic end of the spring telescopic rods (33) on the front side. The mounting hole (35) is opened on the inner side of the bottom support plate (31). The pressure sensor (36) is installed on the inner side of the mounting hole (35). The PLC controller (37) is installed on the front side of the workbench (1).
2. The limiting structure for testing the shear resistance of corrugated steel webs according to claim 1, characterized in that: The adjustment mechanism (2) includes a moving groove (21), a rotating shaft (22), a lead screw (23), a limiting plate (24), a threaded rod (25), a threaded sleeve (26), and three servo motors (27). The moving groove (21) is located on the inner side of the top of the workbench (1).
3. The limiting structure for testing the shear resistance of corrugated steel webs according to claim 2, characterized in that: The rotating shaft (22) is installed on the inner side of the moving groove (21) and the inner side of the limiting plate (24) respectively. The lead screw (23) is fixedly connected to both sides of the bottom rotating shaft (22). The right side of the lead screw (23), the rear side of the left rear threaded rod (25) and the rear side of the right rear threaded rod (25) are all connected to the connecting shaft by a flat key. The bottom of the limiting plate (24) is welded with a threaded block, which is threadedly connected to the surface of the lead screw (23).
4. The limiting structure for testing the shear resistance of corrugated steel webs according to claim 2, characterized in that: The threaded rod (25) is fixedly connected to both sides of the left rotating shaft (22) and the right rotating shaft (22) respectively. The threaded sleeve (26) is threadedly connected to the surface of the threaded rod (25). The support plate (31) is welded to the top of the threaded sleeve (26). The servo motor (27) is installed on the right side of the worktable (1), the rear side of the left limiting plate (24) and the rear side of the right limiting plate (24) respectively. The output end of the left side of the right servo motor (27) passes through the worktable (1) and is fixedly connected to the right side of the connecting shaft. The output end of the front side of the left rear servo motor (27) passes through the left rear limiting plate (24) and is fixedly connected to the rear side of the connecting shaft. The output end of the front side of the right rear servo motor (27) passes through the right rear limiting plate (24) and is fixedly connected to the rear side of the connecting shaft.
5. A limiting structure for testing the shear resistance of corrugated steel webs according to claim 1, characterized in that: The clamping surface of the clamping plate (34) is fitted with a buffer pad (4), and the surface of the buffer pad (4) is engraved with anti-slip texture.
6. The limiting structure for testing the shear resistance of corrugated steel webs according to claim 1, characterized in that: The spring telescopic rod (33) has a reinforcing ring (5) welded to the side near the clamping plate (34), and the surface of the reinforcing ring (5) is coated with an anti-corrosion coating.
7. A limiting structure for testing the shear resistance of corrugated steel webs according to claim 1, characterized in that: The bottom of the workbench (1) is welded with a support column (6), and the bottom of the support column (6) is engraved with anti-slip texture.
8. A limiting structure for testing the shear resistance of corrugated steel webs according to claim 1, characterized in that: The contact surface of the pressure sensor (36) is fixedly connected to a flexible contact piece (7), which is made of nitrile rubber.