A device for detecting constant elongation stress in highly flexible tubes

Abstract

This utility model discloses a device for testing the constant elongation stress of highly flexible pipes, including a worktable. A testing mechanism is set on the top of the worktable, and the testing mechanism includes a base plate. Guide rods are fixedly connected to both ends of the base plate. A top plate is fixedly connected to the top of the guide rods, and a cylinder is fixedly connected to the bottom of the top plate. A lifting plate is fixedly connected to the telescopic end of the cylinder through a connecting block, and an upper clamp is fixedly connected to the bottom of the lifting plate. A mounting base is fixedly connected above the base plate, and a lower clamp is fixedly connected to the top of the mounting base. A tensile sensor is connected to the bottom of the lower clamp. This utility model uses a cylinder to drive the upper clamp to move up and down along the guide rods to apply tensile force, causing the pipe to undergo a predetermined elongation deformation. The lower clamp monitors the stress value during the tensile process in real time through the tensile sensor and transmits the data to the host computer for processing. Finally, the constant elongation stress index of the pipe at a specific elongation rate is obtained, realizing the automated testing of the mechanical properties of highly flexible pipes.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline testing equipment, specifically to a device for testing the constant elongation stress of highly flexible pipes. Background Technology

[0002] In fields such as polymer materials, medical devices, and flexible tubing, the mechanical property testing of highly flexible tubing (such as silicone tubing and rubber hoses) is crucial. Among these tests, the tensile stress at a given elongation is a key indicator of a material's elasticity and resistance to deformation. Tensile stress testing requires determining the stress value of the tubing at a specific elongation rate through a tensile test to assess whether the material meets design or usage standards. Highly flexible tubing is characterized by high elasticity and easy deformation. Traditional tensile stress testing devices typically use planar clamping, which makes it difficult to provide uniform and stable clamping force for highly flexible tubing. The flexible tubing may slip out of the clamp due to uneven force, or the sample may be damaged by the cutting action of the clamp edges, affecting the accuracy of the test results.

[0003] Based on the above, this utility model proposes a device for detecting the constant elongation stress of highly flexible tubes, which can effectively solve the above problems. Utility Model Content

[0004] This invention addresses the shortcomings of the existing technology by providing a device for detecting the constant elongation stress of highly flexible tubes.

[0005] This utility model is achieved through the following technical solution:

[0006] A device for testing the tensile stress of highly flexible tubes includes a worktable. A testing mechanism is mounted on the top of the worktable. The testing mechanism includes a base plate, with guide rods fixedly connected to both ends of the base plate. A top plate is fixedly connected to the top of the guide rods, and a cylinder is fixedly connected to the bottom of the top plate. A lifting plate is fixedly connected to the telescopic end of the cylinder via a connecting block. Both sides of the lifting plate are slidably connected to the guide rods via sleeves. An upper clamp for holding the tube is fixedly connected to the bottom of the lifting plate. A mounting base is fixedly connected above the base plate, and a lower clamp for holding the tube is fixedly connected to the top of the mounting base. A tensile sensor is connected to the bottom of the lower clamp.

[0007] According to the above technical solution, as a further preferred technical solution, both the upper clamp and the lower clamp include a fixed clamping block, and movable clamping blocks are connected to both sides of the fixed clamping block by multiple bolts; the fixed clamping block has a first semi-circular groove, and the movable clamping block has a second semi-circular groove; the first semi-circular groove and the second semi-circular groove together form a fixed cavity for clamping the pipe body, and a connecting post for sleeved pipe body is provided inside the fixed cavity, and the connecting post is connected to the fixed clamping block.

[0008] According to the above technical solution, as a further preferred technical solution, both the first semicircular groove and the second semicircular groove are fixedly connected with anti-slip stripes.

[0009] According to the above technical solution, as a further preferred technical solution, a host is also provided on the top of the workbench, and the host is located on one side of the testing mechanism.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0011] This invention provides a device for detecting the elongation stress of highly flexible pipes. The pipe is clamped between upper and lower clamps. A cylinder drives the upper clamp to move up and down along a guide rod to apply tensile force, causing the pipe to undergo a predetermined elongation deformation. The lower clamp uses a tensile sensor to monitor the stress value during the tensile process in real time and transmits the data to a host computer for processing. Finally, the device yields the elongation stress index of the pipe at a specific elongation rate, achieving automated testing of the mechanical properties of highly flexible pipes. Both the upper and lower clamps are equipped with fixed and movable clamping blocks, as well as a first semi-circular groove on the fixed clamping block and a second semi-circular groove on the movable clamping block, ensuring smooth clamping of both ends of the pipe. Simultaneously, a connecting column provides a clamping foundation for the highly flexible pipe, preventing it from slipping out of the fixed cavity or tearing during clamping. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is an exploded view of the upper or lower clamp of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0015] A device for testing the tensile stress of a highly flexible tube includes a workbench 1. A testing mechanism is provided on the top of the workbench 1. The testing mechanism includes a base plate 2, with guide rods 3 fixedly connected to both ends of the base plate 2. A top plate 4 is fixedly connected to the top of the guide rods 3, and a cylinder 5 is fixedly connected to the bottom of the top plate 4. A lifting plate 7 is fixedly connected to the telescopic end of the cylinder 5 via a connecting block 6. The two sides of the lifting plate 7 are slidably connected to the guide rods 3 via sleeves 8. An upper clamp 10 for clamping a tube body 9 is fixedly connected to the bottom of the lifting plate 7. A mounting base 11 is fixedly connected above the base plate 2, and a lower clamp 12 for clamping the tube body 9 is fixedly connected to the top of the mounting base 11. A tensile sensor 13 is connected to the bottom of the lower clamp 12.

[0016] This invention clamps the tube body 9 between upper and lower clamps. The upper clamp 10 is driven by the cylinder 5 to move up and down along the guide rod 3 to apply tensile force, causing the tube body to undergo a predetermined elongation deformation. The lower clamp 12 monitors the stress value during the stretching process in real time through the tensile sensor 13 and transmits the data to the host 17 for processing. Finally, the constant elongation stress index of the tube body 9 at a specific elongation rate is obtained, realizing the automated detection of the mechanical properties of highly flexible tubes.

[0017] Furthermore, in another embodiment, both the upper clamp 10 and the lower clamp 12 include a fixed clamping block 14, and movable clamping blocks 16 are connected to both sides of the fixed clamping block 14 by a plurality of bolts 15; the fixed clamping block 14 has a first semi-circular groove 141, and the movable clamping block 16 has a second semi-circular groove 161; the first semi-circular groove 141 and the second semi-circular groove 161 together form a fixed cavity for clamping the tube body 9, and a connecting post 142 for sleeved tube body 9 is provided inside the fixed cavity, and the connecting post 142 is connected to the fixed clamping block 14.

[0018] By setting a fixed clamping block 14, a movable clamping block 16, and a first semi-circular groove 141 on the fixed clamping block 14 and a second semi-circular groove 161 on the movable clamping block 16, the upper and lower ends of the tube body 1 can be clamped smoothly; at the same time, by setting a connecting post 142, a clamping foundation is provided for clamping the highly flexible tube body, preventing it from slipping out of the fixed cavity or tearing during clamping.

[0019] Furthermore, in another embodiment, both the first semicircular groove 141 and the second semicircular groove 161 are fixedly connected with anti-slip stripes 1411.

[0020] By setting anti-slip stripes, the friction of the contact surface is increased, preventing the highly flexible tube from sliding relative to the clamp during the stretching process, thus avoiding errors in the test data caused by slippage.

[0021] Furthermore, in another embodiment, a host 17 is also provided on the top of the workbench 1, and the host 17 is located on one side of the detection mechanism.

[0022] By setting up the host, the stress data of the tensile sensor 13 can be received in real time, and analyzed, stored and displayed, realizing automated data processing of the detection process, improving detection efficiency and data management convenience.

[0023] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the device for detecting the constant elongation stress of a highly flexible tube according to this utility model, and can achieve the positive effects described in this utility model.

[0024] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0025] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A device for detecting the constant elongation stress of highly flexible tubes, characterized in that: The device includes a workbench (1), a detection mechanism on the top of the workbench (1), a base plate (2), guide rods (3) fixedly connected to both ends of the base plate (2); a top plate (4) fixedly connected to the top of the guide rods (3), a cylinder (5) fixedly connected to the bottom of the top plate (4), a lifting plate (7) fixedly connected to the telescopic end of the cylinder (5) via a connecting block (6), the two sides of the lifting plate (7) being slidably connected to the guide rods (3) via sleeves (8), and an upper clamp (10) for clamping the tube body (9) fixedly connected to the bottom of the lifting plate (7); a mounting base (11) fixedly connected to the top of the base plate (2), a lower clamp (12) for clamping the tube body (9) fixedly connected to the top of the mounting base (11), and a tension sensor (13) connected to the bottom of the lower clamp (12).

2. The device for detecting constant elongation stress in highly flexible tubes according to claim 1, characterized in that: Both the upper clamp (10) and the lower clamp (12) include a fixed clamping block (14). The fixed clamping block (14) has a movable clamping block (16) connected to its two sides by multiple bolts (15). The fixed clamping block (14) has a first semi-circular groove (141), and the movable clamping block (16) has a second semi-circular groove (161). The first semi-circular groove (141) and the second semi-circular groove (161) together form a fixed cavity for clamping the tube body (9). The fixed cavity is provided with a connecting post (142) for sleeved tube body (9), and the connecting post (142) is connected to the fixed clamping block (14).

3. The device for detecting constant elongation stress in highly flexible tubes according to claim 2, characterized in that: The first semicircular groove (141) and the second semicircular groove (161) are both fixedly connected with anti-slip stripes (1411).

4. The device for detecting constant elongation stress in highly flexible tubes according to claim 1, characterized in that: The workbench (1) is also equipped with a host (17) on top, and the host (17) is located on one side of the testing mechanism.

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