Pressure resistance detection equipment for stainless steel pipe

Abstract

The utility model discloses pressure resistance detection equipment for a stainless steel pipe, which comprises a detection table, a transverse plate is connected to the detection table through a bracket, and a pressure component acting on the steel pipe is arranged on the transverse plate; the device further comprises a force measuring device, the force measuring device comprises a measuring groove formed in the upper side face of the detection table, a pressure bearing plate is installed in the measuring groove, and a pressure sensor acting on the pressure bearing plate is installed in the measuring groove. The pressure-resistant test fixture is used for carrying out a pressure-resistant test on the steel pipe, the steel pipe is positioned through the two positioning plates, and when the steel pipe is pressed and positioned by the pressing plate, the two positioning plates are far away from each other, so that the steel pipe is prevented from being supported, and the distortion of a test result is avoided; when the two positioning plates are far away from each other, the lifting baffle can ascend to prevent chippings exploded by the steel pipe under pressure from splashing, and when the two positioning plates are close to each other, the lifting baffle can descend to avoid interfering with taking and placing of the steel pipe by workers.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe technology, and in particular to a device for testing the compressive strength of stainless steel pipes. Background Technology

[0002] Steel pipe is a long cylindrical steel material with a hollow cross section. In many applications of steel pipe, such as scaffolding, the safety of steel pipe is crucial. If its resistance to extrusion deformation is insufficient, it can easily cause the collapse of the scaffolding. Therefore, steel pipe needs to be subjected to extrusion deformation test before leaving the factory.

[0003] During extrusion testing, steel pipes are generally clamped. For example, in a steel pipe compressive strength testing device disclosed in application number 202323315687.1, the steel pipe is positioned by a pipe sleeve to facilitate extrusion. However, the sleeve provides some support to the steel pipe during extrusion, which may interfere with the test results. Therefore, improvements are needed to make the test results more accurate. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a compressive strength testing device for stainless steel pipes, thereby solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a compressive strength testing device for stainless steel pipes, including a testing platform, a horizontal plate connected to the testing platform by a bracket, and a pressure component acting on the steel pipe on the horizontal plate;

[0006] It also includes a force measuring device, which includes a measuring groove disposed in the upper side of the testing table, a pressure plate installed in the measuring groove, and a pressure sensor acting on the pressure plate installed in the measuring groove.

[0007] The testing platform is also equipped with two positive and negative threaded rods. The two positive and negative threaded rods are threadedly connected to two positioning plates that always move in opposite directions. The upper side of the testing platform is provided with two sliding grooves, which are distributed on the left and right sides of the positioning plates. The positioning plates are also connected to lifting baffles that slide up and down.

[0008] The testing platform is equipped with a motor for driving the forward and reverse threaded screws to rotate, and also includes a control mechanism for controlling the lifting and lowering of the baffle.

[0009] Preferably, the control mechanism includes a winding wheel disposed on the positive and negative threaded rods, and two winding wheels are disposed on each positive and negative threaded rod, with a rope wound inside each winding wheel. The ropes inside the winding wheels at the same left and right positions on the two positive and negative threaded rods are connected to the same baffle.

[0010] Preferably, the rope is connected to the bottom of the front and rear sides of the baffle.

[0011] Preferably, the front and rear sides of the chute are provided with receiving grooves that open upwards to accommodate the rope.

[0012] Preferably, the receiving groove is equipped with a fixed pulley, and the upper edge of the fixed pulley extends to the detection platform.

[0013] Preferably, the pressure assembly includes a hydraulic cylinder disposed on the horizontal plate, and a pressure plate is installed at the end of the piston rod extending from the hydraulic cylinder, the pressure plate being located on the lower side of the horizontal plate.

[0014] Preferably, the pressure plate is provided with four sliding rods that penetrate the horizontal plate, and the sliding rod matrix is ​​distributed at the four corners of the upper side of the pressure plate.

[0015] This utility model provides a device for testing the compressive strength of stainless steel pipes, which has the following beneficial effects:

[0016] This utility model is used to perform pressure resistance tests on steel pipes. This utility model uses two positioning plates to position the steel pipe. When the steel pipe is pressed and positioned by the pressure plate, the two positioning plates will move away from each other to avoid supporting the steel pipe and causing distortion of the test results.

[0017] When the two positioning plates move away from each other, the lifting baffle will rise to prevent debris from flying out due to pressure on the steel pipe. When the two positioning plates move closer to each other, the lifting baffle will fall to avoid interfering with the workers' handling of the steel pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a left view of the groove in this utility model.

[0021] In the picture:

[0022] 11. Testing table; 12. Support; 13. Horizontal plate; 14. Positive and negative threaded rods; 15. Positioning plate; 16. Slide groove; 17. Baffle; 18. Motor; 19. Winding wheel; 20. Receiving groove; 21. Fixed pulley; 22. Hydraulic cylinder; 23. Pressure plate; 24. Slide rod; 25. Pressure plate. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1-3 According to an embodiment of the compressive strength testing equipment for stainless steel pipes of the present invention, a testing platform 11 is included. A horizontal plate 13 is connected to the testing platform 11 via a bracket 12. A pressure assembly acting on the steel pipe is provided on the horizontal plate 13. In this embodiment, the pressure assembly includes a hydraulic cylinder 22 provided on the horizontal plate 13. A pressure plate 23 is installed at the end of the piston rod extending from the hydraulic cylinder 22. The pressure plate 23 is located on the lower side of the horizontal plate 13.

[0028] In addition, in order to measure the magnitude of the force exerted by the pressure component on the steel pipe, a force measuring device is also included. The force measuring device includes a measuring groove disposed in the upper side of the testing platform 11, a pressure plate 25 is installed in the measuring groove, and a pressure sensor acting on the pressure plate 25 is installed in the measuring groove.

[0029] During the pressure resistance test of the steel pipe, the staff placed the steel pipe on the pressure plate 25, and then controlled the hydraulic cylinder 22 to make the pressure plate 23 move downward and squeeze the steel pipe. During this process, the pressure sensor can sense the pressure on the steel pipe.

[0030] In addition, in order to stabilize the lifting and lowering of the pressure plate 23 in the above process and improve the service life of the piston rod, four sliding rods 24 are provided on the pressure plate 23, which penetrate the horizontal plate 13. The sliding rods 24 are distributed in a matrix at the four corners of the upper side of the pressure plate 23.

[0031] To ensure stable positioning of the steel pipe, two positive and negative threaded rods 14 are installed on the testing table 11. The two positive and negative threaded rods 14 are threaded together with two positioning plates 15 that always move in opposite directions.

[0032] To prevent the steel pipe from splashing debris during the pressure test, two sliding grooves 16 are provided on the upper side of the test platform 11. The two sliding grooves 16 are distributed on the left and right sides of the positioning plate 15, and a lifting baffle 17 is slidably connected inside the positioning plate 15. The test platform 11 is equipped with a motor 18 for driving the positive and negative threaded rods 14 to rotate, and also includes a control mechanism for controlling the lifting of the baffle 17.

[0033] In this embodiment, the control mechanism includes a winding wheel 19 disposed on the positive and negative threaded rods 14. Each positive and negative threaded rod 14 is provided with two winding wheels 19 distributed left and right. A rope is wound inside each winding wheel 19. The ropes inside the winding wheels 19 at the same left and right position on the two positive and negative threaded rods 14 are connected to the same baffle 17, and the ropes are connected to the bottom of the front and rear sides of the baffle 17.

[0034] When the pressure plate 23 is attached to the steel pipe and begins to apply pressure to the steel pipe, the two positive and negative threaded rods 14 rotate, causing the two positioning plates 15 to move away from each other to avoid interfering with the deformation of the steel pipe. At this time, the steel pipe will remain stationary under the action of friction. During the rotation of the positive and negative threaded rods 14, the winding wheel 19 will rotate and pull the baffle 17 upward through the rope. When the two positioning plates 15 move to the maximum distance, the slide groove 16 is raised to the highest point to provide a shielding effect and prevent the debris in the squeezed steel pipe from bursting out.

[0035] When the test is completed and the pressure plate 23 moves upward, the positive and negative threaded rods 14 rotate and bring the two positioning plates 15 closer to each other. At the same time, the baffle 17 descends under the action of gravity to avoid obstructing the staff from taking out or placing the steel pipe. When the steel pipe is placed, it will be clamped between the two positioning plates 15 for positioning.

[0036] To prevent the rope from being worn excessively and to reduce friction at the rope, the front and rear sides of the slide groove 16 are provided with an upward-opening receiving groove 20 to accommodate the rope. The receiving groove 20 is equipped with a fixed pulley 21, and the upper edge of the fixed pulley 21 extends to the detection table 11 to prevent the rope from sticking to the upper side of the detection table 11.

[0037] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A compressive strength testing device for stainless steel pipes, comprising a testing table (11), characterized in that: The testing platform (11) is connected to a horizontal plate (13) via a bracket (12), and a pressure assembly acting on the steel pipe is provided on the horizontal plate (13); It also includes a force measuring device, which includes a measuring groove disposed in the upper side of the detection table (11), a pressure plate (25) is installed in the measuring groove, and a pressure sensor acting on the pressure plate (25) is installed in the measuring groove; The testing platform (11) is also equipped with two positive and negative threaded rods (14). The two positive and negative threaded rods (14) are connected by two positioning plates (15) that always move in opposite directions. The upper side of the testing platform (11) is provided with two sliding grooves (16). The two sliding grooves (16) are distributed on the left and right sides of the positioning plates (15), and the positioning plates (15) are slidably connected with lifting baffles (17). The testing platform (11) is equipped with a motor (18) for driving the positive and negative thread screws (14) to rotate, and also includes a control mechanism for controlling the lifting and lowering of the baffle (17).

2. The compressive strength testing device for stainless steel pipes according to claim 1, characterized in that: The control mechanism includes a winding wheel (19) on the positive and negative threaded rods (14). Each positive and negative threaded rod (14) is provided with two winding wheels (19) distributed on the left and right. Each winding wheel (19) is wound with a rope. The ropes in the winding wheels (19) at the same left and right position on the two positive and negative threaded rods (14) are connected to the same baffle (17).

3. The compressive strength testing device for stainless steel pipes according to claim 2, characterized in that: The rope is connected to the bottom of the front and rear sides of the baffle (17).

4. The compressive strength testing device for stainless steel pipes according to claim 3, characterized in that: The chute (16) has an upward-opening receiving groove (20) on its front and rear sides to accommodate the rope.

5. The compressive strength testing device for stainless steel pipes according to claim 4, characterized in that: The receiving groove (20) is equipped with a fixed pulley (21), and the upper edge of the fixed pulley (21) extends to the detection table (11).

6. The compressive strength testing device for stainless steel pipes according to claim 1, characterized in that: The pressure assembly includes a hydraulic cylinder (22) disposed on the horizontal plate (13), and a pressure plate (23) is mounted on the end of the piston rod extending from the hydraulic cylinder (22), the pressure plate (23) being located on the lower side of the horizontal plate (13).

7. The compressive strength testing device for stainless steel pipes according to claim 6, characterized in that: The pressure plate (23) is provided with four sliding rods (24) that pass through the horizontal plate (13), and the sliding rods (24) are distributed in a matrix at the four corners of the upper side of the pressure plate (23).

Images