A blood collection tube strength test clamping tool

Abstract

The utility model discloses a kind of blood collection tube strength test clamping tool, including rack, the top of the rack is equipped with adjusting mechanism, the adjusting mechanism includes sliding assembly and two clamping components, the sliding assembly includes the bottom plate fixedly installed in rack top end, the top end of the bottom plate is fixedly connected with slide rail, positioning table is slidably connected on the slide rail, the bottom end of the positioning table is fixedly installed with four rollers, four the rollers are all with the bottom end inner wall of slide rail contact, the both ends of the positioning table are all provided with perforation, fastening screw is passed in the perforation. The utility model is on one side through the cooperation of slide rail, positioning table and other components in sliding assembly, realize blood collection tube test position flexible adjustment, improve applicability;On the other hand, with the help of adjusting screw, arc-shaped clamping plate and other structures in clamping component, cooperate rubber pad, while stabilizing clamping blood collection tube, guaranteeing test accuracy, avoid tube body damage, adapt to a variety of diameter specifications, enhance the practicality of tool.

Description

Technical Field

[0001] This utility model relates to the field of medical device testing equipment technology, and in particular to a clamping fixture for testing the strength of blood collection tubes. Background Technology

[0002] During the production of blood collection tubes, strength testing is required to ensure their quality meets usage requirements. This test checks whether the tubes will rupture or deform under pressure. Specialized clamping fixtures are needed to hold the tubes in place for subsequent testing. However, existing clamping fixtures for blood collection tube strength testing have several shortcomings. Firstly, their fixed structure makes it difficult to adjust the tube's position flexibly to meet different testing needs, resulting in poor applicability. Secondly, the clamping stability and adaptability are poor for blood collection tubes of different diameters. This can easily lead to displacement of the tube during testing, affecting the accuracy of the results, or poor control of the clamping force, potentially damaging the outer wall of the tube. Therefore, these fixtures fail to adequately meet the requirements for blood collection tube strength testing.

[0003] To address this, we propose a clamping fixture for testing the strength of blood collection tubes. Utility Model Content

[0004] The main purpose of this utility model is to provide a clamping fixture for testing the strength of blood collection tubes. In order to prevent problems such as poor applicability caused by the inability to flexibly adjust the position of the blood collection tubes during the strength test, displacement caused by unstable clamping or improper force affecting the test accuracy and tube damage, the fixture improves the convenience, stability and accuracy of blood collection tube strength testing. At the same time, it enhances the adaptability of the fixture to blood collection tubes of different diameters and specifications, meets diverse testing needs, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A clamping fixture for testing the strength of blood collection tubes includes a frame. An adjustment mechanism is provided at the top of the frame. The adjustment mechanism includes a sliding component and two clamping components. The sliding component includes a base plate fixedly installed at the top of the frame. A slide rail is fixedly connected to the top of the base plate. A positioning platform is slidably connected to the slide rail. Four rollers are fixedly installed at the bottom of the positioning platform, and all four rollers are in contact with the inner wall of the bottom of the slide rail. Through holes are provided at both ends of the positioning platform, and fastening screws pass through the through holes. Through slots are provided on both sides of the slide rail near the through holes. A first rotating wheel is fixedly connected to one end of the fastening screw, and a nut sleeve is threaded onto the other end of the fastening screw away from the first rotating wheel, passing through the two through slots. The clamping assembly includes a limiting plate, an adjusting screw, a second rotating wheel, an arc-shaped clamping plate, a sliding rod, and an extension plate.

[0006] By adopting the above technical solution, the positioning platform can be pushed to slide on the slide rail. Four rollers roll to assist in the movement. After adjusting to the appropriate position, the fastening screw is passed through the through hole of the positioning platform and the through groove of the slide rail. Then, the first rotating wheel is rotated to drive the fastening screw to rotate, so that the nut is moved on the fastening screw and closely fits the slide rail, thereby fixing the positioning platform at the designated position on the slide rail, and realizing the preliminary positioning of the blood collection tube test position.

[0007] After placing the blood collection tube in the arc-shaped positioning groove of the positioning platform, the operator can rotate the second rotating wheel to drive the adjusting screw to rotate on the limiting plate. Since the bottom end of the adjusting screw is rotatably connected to the arc-shaped clamping plate through a bearing, its rotational motion is converted into the vertical movement of the arc-shaped clamping plate. During this process, the sliding rod connected to the top of the arc-shaped clamping plate will slide synchronously along the through holes on the extension plates at both ends of the limiting plate, ensuring that the arc-shaped clamping plate always remains horizontal and descends or rises smoothly. When the rubber pad on the inner side of the arc-shaped clamping plate contacts the outer wall of the blood collection tube and reaches a suitable clamping force, the rotation of the second rotating wheel is stopped. At this time, the blood collection tube is stably clamped between the arc-shaped positioning groove and the arc-shaped clamping plate, which not only avoids displacement of the blood collection tube during the test, but also buffers the clamping force through the rubber pad, preventing the blood collection tube from being damaged due to excessive clamping. It is suitable for clamping and fixing blood collection tubes of different diameters.

[0008] Furthermore, the limiting plate is fixedly installed on the top of the positioning platform, and an adjusting screw is threadedly connected to the limiting plate. A second rotating wheel is fixedly connected to the top of the adjusting screw, and an arc-shaped clamping plate is rotatably connected to the bottom of the adjusting screw through a bearing.

[0009] By adopting the above technical solution, the second rotating wheel is rotated, which drives the adjusting screw to rotate on the limit plate. Since the bottom end of the adjusting screw is rotatably connected to the arc-shaped clamping plate through the bearing, the rotating adjusting screw will push or pull the arc-shaped clamping plate to move up and down, thereby adjusting the distance between the arc-shaped clamping plate and the arc-shaped positioning groove on the positioning platform, so as to adapt to blood collection tubes of different diameters.

[0010] Furthermore, the limiting plate has extension plates integrally formed at both ends, and the extension plates are provided with through holes. The top end of the arc-shaped clamp is fixedly connected to two symmetrical sliding rods, and the top ends of the sliding rods pass through the through holes and are slidably connected to the through holes.

[0011] By adopting the above technical solution, when the arc-shaped clamp moves up and down under the action of the adjusting screw, the slide bar will slide synchronously in the through hole of the extension plate, which plays a guiding role in the movement of the arc-shaped clamp, ensuring that the arc-shaped clamp always moves smoothly in the vertical direction and avoids its deviation, thereby ensuring the stability and accuracy of clamping the blood collection tube.

[0012] Furthermore, an arc-shaped positioning groove is provided at the center of the top of the positioning platform, and a rubber pad is provided on the inner side of the arc-shaped clamping plate.

[0013] By adopting the above technical solution, the blood collection tube is placed in the arc-shaped positioning groove of the positioning platform. The arc-shaped positioning groove can initially limit the blood collection tube, keeping it in a roughly centered position. Then, by adjusting the arc-shaped clamp, the rubber pad on its inner side contacts and clamps the outer wall of the blood collection tube. The rubber pad can increase the friction between the rubber pad and the blood collection tube, preventing the blood collection tube from sliding during the test, and also avoid damaging the outer wall of the blood collection tube.

[0014] Furthermore, a bracket is fixedly installed at the top of the frame, a hydraulic cylinder is fixedly installed at the top of the bracket, the telescopic end of the hydraulic cylinder passes through the bracket and is fixedly connected to a connecting rod, and a pressure sensor is fixedly installed at the bottom of the connecting rod.

[0015] By adopting the above technical solution, the hydraulic cylinder is activated, and the telescopic end of the hydraulic cylinder extends, driving the connecting rod and pressure sensor to move downward, so that the pressure sensor comes into contact with the clamped and fixed blood collection tube and applies pressure. The pressure sensor can detect the pressure applied to the blood collection tube in real time, thereby conducting a strength test on the blood collection tube.

[0016] Furthermore, the bottom end of the frame is fixedly connected to a support leg, and the support leg is provided in four parts and is located at the four corners of the bottom end of the frame.

[0017] By adopting the above technical solution, the four support legs are respectively supported at the four corners of the bottom of the frame, so that the entire fixture is kept in a stable horizontal state, providing a stable working platform for the strength test of the blood collection tube, and preventing the fixture from tilting or shaking during the test, which would affect the accuracy of the test results.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (1) This utility model provides a clamping fixture for testing the strength of blood collection tubes. By setting up a sliding component, the fixture utilizes the cooperation of a slide rail, a positioning platform, rollers, a fastening screw, a first rotating wheel, and a nut sleeve to push the positioning platform to slide flexibly on the slide rail. The four rollers assist in rolling. After adjusting to a suitable position, rotating the first rotating wheel drives the fastening screw to rotate, so that the nut sleeve fits tightly against the slide rail, thereby fixing the positioning platform at the designated position on the slide rail, achieving preliminary positioning of the blood collection tube test position. This design allows for convenient adjustment of the position of the blood collection tube according to different test requirements, greatly improving the applicability of the fixture and meeting the position requirements of various blood collection tube test scenarios.

[0019] (2) This utility model provides a clamping fixture for testing the strength of blood collection tubes. With the help of a clamping assembly, rotating the second rotating wheel drives the adjusting screw to rotate, causing the arc-shaped clamping plate to move smoothly in the vertical direction. Simultaneously, the sliding rod slides synchronously within the through hole of the extension plate to guide the movement, ensuring the horizontal movement of the arc-shaped clamping plate. When the rubber pad on the inner side of the arc-shaped clamping plate contacts the outer wall of the blood collection tube and reaches a suitable clamping force, the rotation of the second rotating wheel stops, and the blood collection tube is stably clamped between the arc-shaped positioning groove and the arc-shaped clamping plate. The rubber pad not only increases the friction between the rubber pad and the blood collection tube, preventing the tube from sliding during testing and ensuring accurate test results, but also buffers the clamping force, avoiding damage to the outer wall of the blood collection tube. Moreover, this structural design can adapt to blood collection tubes of different diameters, further improving the practicality of the fixture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a blood collection tube strength testing clamping fixture according to the present invention.

[0021] Figure 2 This is a schematic diagram of the fastening screw and nut sleeve structure of a blood collection tube strength testing clamping fixture according to the present invention.

[0022] Figure 3 This is a schematic diagram showing the disassembled structure of the clamping component of a blood collection tube strength testing clamping fixture according to this utility model.

[0023] In the diagram: 1. Frame; 2. Adjustment mechanism; 3. Base plate; 4. Slide rail; 5. Positioning platform; 6. Through hole; 7. Through groove; 8. Fastening screw; 9. First rotating wheel; 10. Nut sleeve; 11. Limiting plate; 12. Adjusting screw; 13. Second rotating wheel; 14. Arc-shaped clamp; 15. Roller; 16. Arc-shaped positioning groove; 17. Rubber pad; 18. Slide rod; 19. Extension plate; 20. Through hole; 21. Bracket; 22. Hydraulic cylinder; 23. Connecting rod; 24. Pressure sensor; 25. Support leg. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] To prevent issues such as poor applicability due to inflexible positioning of blood collection tubes during strength testing, displacement caused by unstable clamping or improper force affecting test accuracy, and tube damage, this equipment aims to improve the convenience, stability, and accuracy of blood collection tube strength testing. It also enhances the adaptability of the tooling to blood collection tubes of different diameters to meet diverse testing needs, such as… Figure 1 , Figure 2 , Figure 3As shown, a clamping fixture for testing the strength of blood collection tubes includes a frame 1. The top of the frame 1 is provided with an adjustment mechanism 2. The adjustment mechanism 2 includes a sliding component and two clamping components. The sliding component includes a base plate 3 fixedly installed at the top of the frame 1. A slide rail 4 is fixedly connected to the top of the base plate 3. A positioning platform 5 is slidably connected to the slide rail 4. Four rollers 15 are fixedly installed at the bottom of the positioning platform 5. All four rollers 15 are in contact with the inner wall of the bottom of the slide rail 4. Through holes 6 are opened at both ends of the positioning platform 5. Fastening screws 8 pass through the through holes 6. Through grooves 7 are opened on both sides of the slide rail 4 near the through holes 6. A first rotating wheel 9 is fixedly connected to one end of the fastening screw 8. The end of the fastening screw 8 away from the first rotating wheel 9 passes through the two through grooves 7 and is threadedly connected to a nut sleeve 10. The clamping assembly includes a limiting plate 11, an adjusting screw 12, a second rotating wheel 13, an arc-shaped clamping plate 14, a sliding rod 18, and an extension plate 19.

[0026] In use, the positioning platform 5 can be pushed to slide on the slide rail 4. The four rollers 15 roll to assist in the movement. After adjusting to the appropriate position, the fastening screw 8 is passed through the through hole 6 of the positioning platform 5 and the through groove 7 of the slide rail 4. Then, the first rotating wheel 9 is rotated to drive the fastening screw 8 to rotate, so that the nut sleeve 10 moves on the fastening screw 8 and fits tightly against the slide rail 4, thereby fixing the positioning platform 5 at the designated position on the slide rail 4, and realizing the initial positioning of the blood collection tube test position.

[0027] After placing the blood collection tube in the arc-shaped positioning groove 16 of the positioning platform 5, the operator can rotate the second rotating wheel 13 to drive the adjusting screw 12 to rotate on the limiting plate 11. Since the bottom end of the adjusting screw 12 is rotatably connected to the arc-shaped clamping plate 14 through a bearing, its rotational motion is converted into vertical movement of the arc-shaped clamping plate 14. During this process, the sliding rod 18 connected to the top of the arc-shaped clamping plate 14 will slide synchronously along the through holes 20 on the extension plates 19 at both ends of the limiting plate 11, ensuring that the arc-shaped clamping plate 14 always maintains a horizontal state and descends or rises smoothly. When the rubber pad 17 on the inner side of the arc-shaped clamping plate 14 contacts the outer wall of the blood collection tube and reaches a suitable clamping force, the rotation of the second rotating wheel 13 is stopped. At this time, the blood collection tube is stably clamped between the arc-shaped positioning groove 16 and the arc-shaped clamping plate 14, which not only avoids displacement of the blood collection tube during the test, but also buffers the clamping force through the rubber pad 17 to prevent the blood collection tube from being damaged due to excessive clamping. It is suitable for clamping and fixing blood collection tubes of different diameters.

[0028] For example, such as Figure 3 As shown, the present invention also includes a limiting plate 11 fixedly installed on the top of the positioning platform 5, an adjusting screw 12 threadedly connected to the limiting plate 11, a second rotating wheel 13 fixedly connected to the top of the adjusting screw 12, and an arc-shaped clamping plate 14 rotatably connected to the bottom of the adjusting screw 12 through a bearing.

[0029] When in use, rotating the second rotating wheel 13 drives the adjusting screw 12 to rotate on the limiting plate 11. Since the bottom end of the adjusting screw 12 is rotatably connected to the arc-shaped clamping plate 14 through the bearing, the adjusting screw 12 will push or pull the arc-shaped clamping plate 14 up and down when it rotates, thereby adjusting the distance between the arc-shaped clamping plate 14 and the arc-shaped positioning groove 16 on the positioning table 5, so as to adapt to blood collection tubes of different diameters.

[0030] For example, such as Figure 3 As shown, the present invention also includes extension plates 19 integrally formed at both ends of the limiting plate 11, the extension plates 19 having through holes 20, and the top end of the arc-shaped clamping plate 14 being fixedly connected to two symmetrical sliding rods 18, the top ends of the sliding rods 18 passing through the through holes 20 and slidingly engaging with the through holes 20.

[0031] When in use, as the arc-shaped clamp 14 moves up and down under the action of the adjusting screw 12, the slide rod 18 will slide synchronously in the through hole 20 of the extension plate 19, which plays a guiding role in the movement of the arc-shaped clamp 14, ensuring that the arc-shaped clamp 14 always moves smoothly in the vertical direction and avoids its deviation, thereby ensuring the stability and accuracy of clamping the blood collection tube.

[0032] For example, such as Figure 3 As shown, the present invention also includes an arc-shaped positioning groove 16 provided at the top center of the positioning platform 5, and a rubber pad 17 provided on the inner side of the arc-shaped clamping plate 14.

[0033] During use, the blood collection tube is placed in the arc-shaped positioning groove 16 of the positioning platform 5. The arc-shaped positioning groove 16 provides initial positioning for the blood collection tube, keeping it roughly in the center position. Then, by adjusting the arc-shaped clamping plate 14, the rubber pad 17 on its inner side contacts and clamps the outer wall of the blood collection tube. The rubber pad 17 increases the friction between itself and the blood collection tube, preventing the tube from sliding during testing, and also avoids damage to the outer wall of the blood collection tube.

[0034] For example, such as Figure 1 As shown, the present invention also includes a bracket 21 fixedly installed at the top of the frame 1, a hydraulic cylinder 22 fixedly installed at the top of the bracket 21, the telescopic end of the hydraulic cylinder 22 passing through the bracket 21 and fixedly connected to a connecting rod 23, and a pressure sensor 24 fixedly installed at the bottom of the connecting rod 23.

[0035] When in use, the hydraulic cylinder 22 is activated, and the telescopic end of the hydraulic cylinder 22 extends, driving the connecting rod 23 and the pressure sensor 24 to move downward, so that the pressure sensor 24 comes into contact with the clamped and fixed blood collection tube and applies pressure. The pressure sensor 24 can detect the pressure applied to the blood collection tube in real time, thereby conducting a strength test of the blood collection tube.

[0036] For example, such as Figure 1 As shown, the present invention also includes a support leg 25 fixedly connected to the bottom end of the frame 1, and the support leg 25 is provided in four parts and is located at the four corners of the bottom end of the frame 1 respectively.

[0037] During use, the four support legs 25 are respectively supported at the four corners of the bottom of the frame 1, so that the entire fixture is kept in a stable horizontal state, providing a stable working platform for the strength test of the blood collection tube, and preventing the fixture from tilting or shaking during the test, which would affect the accuracy of the test results.

[0038] It should be noted that this utility model is a clamping fixture for testing the strength of blood collection tubes. First, four support legs 25 support the frame 1 to maintain a stable horizontal position, serving as a stable working platform. Then, the positioning table 5, equipped with four auxiliary moving rollers 15, slides on the slide rail 4. After adjusting to a suitable position, the fastening screw 8 passes through the through hole 6 of the positioning table 5 and the through groove 7 of the slide rail 4. The first rotating wheel 9 is rotated, causing the nut sleeve 10 to fit tightly against the slide rail 4, fixing the positioning table 5 and achieving initial positioning of the blood collection tube for testing. Then, the blood collection tube is placed in the arc-shaped positioning groove 16 of the positioning table 5. The arc-shaped positioning groove 16 initially limits the position of the blood collection tube. Next, the second rotating wheel 13 is rotated, causing the adjusting screw 12 to rotate on the limiting plate 11. The bottom end of the arc-shaped clamping plate 14, connected by a bearing, moves up and down. At the same time, the sliding rod 18 at the top of the arc-shaped clamping plate 14 slides synchronously within the through hole 20 of the extension plate 19 of the limiting plate 11, ensuring that the arc-shaped clamping plate 14 moves smoothly in the vertical direction. When the rubber pad 17 on the inner side of the arc-shaped clamping plate 14 contacts and clamps the outer wall of the blood collection tube, the rotation of the second rotating wheel 13 stops. The rubber pad 17 increases friction and prevents damage, thus completing the stable clamping of the blood collection tube. Then, the hydraulic cylinder 22 on the top support 21 of the frame 1 is started, and its telescopic end extends. Through the connecting rod 23, it drives the pressure sensor 24 to move downward, contact the clamped blood collection tube and apply pressure. The pressure sensor 24 detects the pressure in real time and performs a blood collection tube strength test.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping fixture for testing the strength of blood collection tubes, comprising a frame (1), characterized in that, The top of the frame (1) is provided with an adjustment mechanism (2). The adjustment mechanism (2) includes a sliding component and two clamping components. The sliding component includes a base plate (3) fixedly installed at the top of the frame (1). The top of the base plate (3) is fixedly connected to a slide rail (4). A positioning platform (5) is slidably connected on the slide rail (4). Four rollers (15) are fixedly installed at the bottom of the positioning platform (5). All four rollers (15) are in contact with the inner wall of the bottom of the slide rail (4). Both ends of the positioning platform (5) are provided with through holes (6). A fastening screw (8) passes through the through holes (6). Both sides of the slide rail (4) near the through holes (6) are provided with through grooves (7). One end of the fastening screw (8) is fixedly connected to a first rotating wheel (9). The end of the fastening screw (8) away from the first rotating wheel (9) passes through the two through grooves (7) and is threadedly connected to a nut sleeve (10). The clamping assembly includes a limiting plate (11), an adjusting screw (12), a second rotating wheel (13), an arc-shaped clamping plate (14), a sliding rod (18), and an extension plate (19).

2. The blood collection tube strength testing clamping fixture according to claim 1, characterized in that: The limiting plate (11) is fixedly installed on the top of the positioning platform (5). An adjusting screw (12) is threadedly connected to the limiting plate (11). A second rotating wheel (13) is fixedly connected to the top of the adjusting screw (12). An arc-shaped clamp (14) is rotatably connected to the bottom of the adjusting screw (12) through a bearing.

3. The blood collection tube strength testing clamping fixture according to claim 1, characterized in that: The limiting plate (11) has extension plates (19) integrally formed at both ends. The extension plates (19) are provided with through holes (20). The top of the arc-shaped clamp (14) is fixedly connected to two symmetrical sliding rods (18). The top of the sliding rods (18) passes through the through holes (20) and is slidably connected to the through holes (20).

4. The blood collection tube strength testing clamping fixture according to claim 1, characterized in that: The top center of the positioning platform (5) is provided with an arc-shaped positioning groove (16), and the inner side of the arc-shaped clamp (14) is provided with a rubber pad (17).

5. The blood collection tube strength testing clamping fixture according to claim 1, characterized in that: A bracket (21) is fixedly installed at the top of the frame (1), and a hydraulic cylinder (22) is fixedly installed at the top of the bracket (21). The telescopic end of the hydraulic cylinder (22) passes through the bracket (21) and is fixedly connected to a connecting rod (23). A pressure sensor (24) is fixedly installed at the bottom of the connecting rod (23).

6. The blood collection tube strength testing clamping fixture according to claim 1, characterized in that: The bottom end of the frame (1) is fixedly connected to a support leg (25), and the support leg (25) is provided in four parts and is located at the four corners of the bottom end of the frame (1).

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