Clamping mechanism for tension test

Abstract

The utility model relates to the field of laboratory tools, and discloses a clamping mechanism for a tension test, which comprises a protective box, servo motors are fixedly connected to the left bottom end and the right bottom end in the protective box, ball screws are fixedly connected to the output ends of the servo motors, a ball nut seat is in threaded connection to the middle of each ball screw, and a clamping mechanism is arranged on the ball nut seat. A servo motor, a ball screw, a ball nut seat, a limiting ring, a first moving plate, a tension sensor and a tension spring are arranged, the servo motor is started, and the servo motor drives the ball screw to enable the ball nut seat to drive the first moving plate to move upwards to pull an object below for testing; through the arrangement of the first fixed clamping plate, the first rubber layer, the first fixed plate and the first movable clamping plate, the situation that a test object slips from the clamping plates due to too large tension can be avoided through the mutually matched clamping plate shapes, and the clamping firmness of the clamping plates is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory tools, specifically a clamping mechanism for tensile testing. Background Technology

[0002] Tensile testing is widely used in materials science, engineering, and quality control. By applying tensile force to a material and measuring its various performance parameters during the tensile process, the strength, toughness, ductility, and other properties of the material can be evaluated, providing a reliable basis for material selection, design, and use.1 Furthermore, tensile testing is also used to test the durability and reliability of products, ensuring product quality and safety.

[0003] Currently, clamping mechanisms for tensile testing typically use bolts to rotate until the parts at the bolt ends clamp the cable, which is time-consuming and greatly reduces work efficiency. Furthermore, the clamps are often straight-faced, making it easy for fabrics or thin ropes to detach from the clamps when subjected to strong tensile forces, thus affecting the tensile test. Therefore, a clamping mechanism for tensile testing is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mechanism for tensile testing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping mechanism for tensile testing, including a protective box.

[0006] The protective box has a servo motor fixedly connected to the bottom left and right sides inside. The output end of the servo motor is fixedly connected to a ball screw, and the ball screw is threaded with a ball nut seat in the middle.

[0007] Furthermore, a limiting ring is rotatably connected to the top of the ball screw, and the top of the limiting ring is fixedly connected to the top of the inner part of the protective box.

[0008] Furthermore, a first movable plate is fixedly connected to the inner side of the ball nut seat, and limit rods are slidably connected to both the left and right ends of the first movable plate. The upper and lower ends of the limit rods are fixedly connected to the protective box.

[0009] Furthermore, a tension sensor is fixedly connected to the bottom end of the first movable plate, and a tension spring is fixedly connected to the lower end of the tension sensor.

[0010] Furthermore, a connecting plate is fixedly connected to the bottom end of the tension spring, and a second movable plate is fixedly connected to the left and right bottom ends of the connecting plate. The second movable plate is slidably connected to the limiting rod in an up-down manner.

[0011] Furthermore, the inner side of the second movable plate is fixedly connected with a first fixed clamping plate and a first fixed plate.

[0012] Furthermore, a first rubber layer is fixedly connected to the inner wall of the first fixed plate, and a first push rod is connected through the middle of the first fixed plate.

[0013] Furthermore, the top ends of the first push rod and the first fixed plate are both provided with first limiting holes, the top ends of the first limiting holes are engaged with first pins, and one end of the first push rod is fixedly connected to a first movable clamping plate.

[0014] Furthermore, a second fixed clamping plate is provided at the lower end of the first fixed clamping plate. The bottom end of the second fixed clamping plate is fixedly connected to the protective box. A second rubber layer is fixedly connected to the inner wall of the second fixed clamping plate. A second fixing plate is provided on the opposite side of the second fixed clamping plate. A second top rod is connected through the middle of the second fixing plate. A second limiting hole is opened at the top of both the second top rod and the second fixing plate. A second pin is engaged in the middle of the second limiting hole. A second movable clamping plate is fixedly connected to one end of the second top rod.

[0015] Furthermore, ventilation openings are provided at the lower ends of both the left and right sides of the protective box, and a door is rotatably connected to the front end of the protective box via a hinge. A glass window is fixedly connected to the middle of the door, and a handle is fixedly connected to the front end of the door.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By incorporating a protective box, door, glass window, and handle, the device facilitates observation during testing and prevents accidental injury to personnel due to breakage of the test object, effectively enhancing safety. The system includes a servo motor, ball screw, ball nut seat, limit ring, first moving plate, tension sensor, and tension spring. Activating the servo motor drives the ball screw, causing the ball nut seat to move the first moving plate upwards, pulling the object below for testing. The first fixed clamping plate, first rubber layer, first fixed plate, and first moving clamping plate, with their interlocking shapes, prevent the test object from slipping out of the clamping plates due to excessive tension, effectively improving clamping stability. The first limit hole, first pin, and first push rod allow for quick and easy clamping of the moving clamping plate when the test object needs to be clamped. Pushing the first push rod to one side engages the first moving clamping plate with the first fixed clamping plate, and then inserting the pin from the first limit hole at the top of the first fixed plate into the first limit hole at the top of the push rod. This simplifies operation and significantly improves work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front view schematic diagram of the internal structure of this utility model;

[0021] Figure 3 This is a front cross-sectional view of the present invention.

[0022] In the diagram: 1. Protective box; 2. Servo motor; 3. Ball screw; 4. Ball nut seat; 5. Limiting ring; 6. First moving plate; 7. Limiting rod; 8. Tension sensor; 9. Tension spring; 10. Connecting plate; 11. Second moving plate; 12. First fixed clamping plate; 13. First rubber layer; 14. First fixed plate; 15. First top rod; 16. First limiting hole; 17. First pin; 18. Second fixed clamping plate; 19. Second rubber layer; 20. Second fixed plate; 21. Second top rod; 22. Second limiting hole; 23. Second pin; 24. Second moving clamping plate; 25. Ventilation opening; 26. Box door; 27. Glass window; 28. Handle; 29. ​​First moving clamping plate. Detailed Implementation

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0025] 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.

[0026] Please see Figure 1-3This utility model provides a clamping mechanism technical solution for tensile testing: A clamping mechanism for tensile testing includes a protective box. By setting a protective box, a door, a glass window, and a handle, it is convenient to observe the situation during the test and will not accidentally injure the staff due to the breakage of the test object, effectively enhancing the safety of the device. Servo motors are fixedly connected to the bottom left and right sides inside the protective box. By setting a servo motor, a ball screw, a ball nut seat, a limit ring, a first moving plate, a tension sensor, and a tension spring, the servo motor is started. The servo motor drives the ball screw, which causes the ball nut seat to move the first moving plate upward to pull the object below for testing. The output end of the servo motor is fixedly connected to the ball screw. The ball nut seat is threadedly connected to the middle of the ball screw. The top end of the ball screw is rotatably connected to the limit ring. The top end of the limit ring is fixedly connected to the top of the inside of the protective box. The first moving plate is fixedly connected to the inner side of the ball nut seat. Both ends of the first moving plate are slidably connected to... A limiting rod is fixedly connected to the upper and lower ends of the limiting rod and the protective box. A tension sensor is fixedly connected to the bottom end of the first movable plate. A tension spring is fixedly connected to the lower end of the tension sensor. A connecting plate is fixedly connected to the bottom end of the tension spring. A second movable plate is fixedly connected to the left and right bottom ends of the connecting plate. The second movable plate and the limiting rod are slidably connected up and down. A first fixed clamping plate and a first fixed plate are fixedly connected to the inner side of the second movable plate. A first rubber layer is fixedly connected to the inner wall of the first fixed clamping plate. A first top rod is connected through the middle of the first fixed plate. A first limiting hole is opened at the top of the first top rod and the first fixed plate. By setting the first limiting hole, the first pin and the first top rod, when it is necessary to clamp and fix the test object, the first top rod is pushed to one side to make the first movable clamping plate and the first fixed clamping plate engage. Then, the pin is inserted from the first limiting hole at the upper end of the first fixed plate to the first limiting hole at the upper end of the top rod, which facilitates the quick fixation of the movable clamping plate. The operation is simple and effectively improves the work efficiency.

[0027] The top of the first limiting hole is engaged with a first pin, and one end of the first push rod is fixedly connected to a first movable clamping plate. By setting a first fixed clamping plate, a first rubber layer, a first fixing plate, and a first movable clamping plate, the mutually fitting clamping plate shapes can prevent the test object from slipping out of the clamping plate due to excessive tension, effectively improving the clamping firmness of the clamping plate. A second fixed clamping plate is set at the lower end of the first fixed clamping plate, and the bottom end of the second fixed clamping plate is fixedly connected to the protective box. A second rubber layer is fixedly connected to the inner wall of the second fixed clamping plate. A second fixing plate is set on the opposite side of the second fixed clamping plate. A second push rod is connected through the middle of the second fixing plate. A second limiting hole is opened at the top of both the second push rod and the second fixing plate. A second pin is engaged with the middle of the second limiting hole. One end of the second push rod is fixedly connected to the second movable clamping plate. Ventilation openings are opened at the lower ends of both the left and right sides of the protective box. The front end of the protective box is connected to the box door by a hinge. A glass window is fixedly connected to the middle of the box door, and a handle is fixedly connected to the front end of the box door.

[0028] When using this invention, to clamp and fix the test object, the first push rod is pushed to one side, causing the first movable clamping plate to engage with the first fixed clamping plate. Then, a pin is inserted from the first limiting hole at the upper end of the first fixed plate into the first limiting hole at the upper end of the push rod, facilitating quick and easy fixing of the movable clamping plate. The operation is simple and effectively improves work efficiency. Closing the door allows for easy observation of the testing process through the glass window and handle, preventing accidental injury to personnel due to breakage of the test object, thus enhancing the safety of the device. Activating the servo motor drives the ball screw, causing the ball nut seat to move the first movable plate upwards, pulling the object below for testing. By setting up the first fixed clamping plate, the first rubber layer, the first fixed plate, and the first movable clamping plate, the mutually fitting clamping plate shapes prevent the test object from slipping out of the clamping plates due to excessive pulling force, effectively improving the clamping firmness.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for tension test, comprising a protective box (1), characterized in that: The left and right bottom ends of the interior of the protective box (1) are fixedly connected with a servo motor (2), the output end of the servo motor (2) is fixedly connected with a ball screw (3), and the middle of the ball screw (3) is threadedly connected with a ball nut seat (4).

2. A clamping mechanism for tensile testing according to claim 1, characterised in that: The top end of the ball screw (3) is rotatably connected with a limiting ring (5), and the top end of the limiting ring (5) is fixedly connected with the top end of the interior of the protective box (1).

3. A clamping mechanism for tension testing according to claim 1, wherein: The inner side of the ball nut seat (4) is fixedly connected with a first moving plate (6), the left and right ends of the first moving plate (6) are both slidably connected with a limiting rod (7), and the upper and lower ends of the limiting rod (7) are fixedly connected with the protective box (1).

4. A clamping mechanism for tensile testing according to claim 3, wherein: The bottom end of the first moving plate (6) is fixedly connected with a tension spring (9), and the lower end of the tension spring (9) is fixedly connected with a connecting plate (10).

5. A clamping mechanism for tensile testing according to claim 4, characterised in that: The left and right bottom ends of the connecting plate (10) are both fixedly connected with a second moving plate (11), and the second moving plate (11) is slidably connected with the limiting rod (7) in an up-down manner.

6. A clamping mechanism for tensile testing according to claim 5 wherein: The inner side of the second moving plate (11) is fixedly connected with a first fixed plate (14) and a first fixed plate (14).

7. A clamping mechanism for tensile testing according to claim 6, characterised in that: The inner wall of the first fixed plate (14) is fixedly connected with a first rubber layer (13), and the middle of the first fixed plate (14) penetrates through a first top rod (15).

8. A clamping mechanism for tensile testing according to claim 7, characterised in that: The top end of the first top rod (15) and the first fixed plate (14) are both provided with a first limiting hole (16), the top end of the first limiting hole (16) is hingedly connected with a first bolt (17), and one end of the first top rod (15) is fixedly connected with a first moving plate (29).

9. A clamping mechanism for tension testing according to claim 6, wherein: The lower end of the first fixed plate (12) is provided with a second fixed plate (18), the bottom end of the second fixed plate (18) is fixedly connected with the protective box (1), the inner wall of the second fixed plate (18) is fixedly connected with a second rubber layer (19), the opposite side of the second fixed plate (18) is provided with a second fixed plate (20), the middle of the second fixed plate (20) penetrates through a second top rod (21), the top end of the second top rod (21) and the second fixed plate (20) are both provided with a second limiting hole (22), the middle of the second limiting hole (22) is hingedly connected with a second bolt (23), and one end of the second top rod (21) is fixedly connected with a second moving plate (24).

10. The gripping mechanism for tension testing of claim 1, wherein: The left and right lower ends of the protective box (1) are both provided with a ventilation hole (25), the front end of the protective box (1) is rotatably connected with a box door (26) through a hinge, the middle of the box door (26) is fixedly connected with a glass window (27), and the front end of the box door (26) is fixedly connected with a handle (28).

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