Device for simulating dynamic bending behavior

Abstract

The utility model discloses a device for simulating dynamic bending behavior, which belongs to the technical field of material test and comprises a base frame, and a vertical fixing component is arranged in the middle of the base frame. The bending simulation part is fixed on the vertical fixing part; the bending direction control part is fixed on the base frame and is positioned on the outer side of the bending simulation part; the bending angle control component is fixed on the bending direction control component and is connected with the bending simulation piece so as to control the bending angle and the bending direction of the bending simulation piece; and the console is fixed on the base frame, and the console is electrically connected with the bending direction control component and the bending angle control component. The dynamic bending test device can efficiently and accurately complete the dynamic bending test of the bending simulation piece, not only can directly simulate the dynamic bending behavior, but also can evaluate the performance of other equipment and materials closely related to the bending characteristic through an indirect test method.

Description

Technical Field

[0001] The utility model belongs to the technical field of material testing, and in particular relates to a device for simulating dynamic bending behavior. Background Art

[0002] In fields such as industrial automation, medical equipment, and aerospace, slender rod- or tubular materials are widely used due to their unique connectivity, mechanical properties, and flexibility. Applications where one end is fixed and the other is bent are also very common. In these applications, materials are prone to bending-compression damage and fatigue damage. Therefore, understanding the bending properties of the material itself and monitoring its bending behavior can support material development and safety parameter regulation. In addition, most organisms also have bendable, slender rod- or tubular tissues and parts, such as fingers, wrists, upper and lower arms, blood vessels, and so on. The bending behavior of organisms often involves complex mechanical and biological mechanisms, and traditional simulation methods are often difficult to accurately replicate. However, using devices that can precisely control bending behavior can more accurately simulate the bending process of tissue parts, thereby gaining a deeper understanding of the movement mechanisms of organisms. By simulating the bending behavior of organisms, intelligent monitoring materials that better match the movement characteristics of organisms can be matched, accelerating the optimization and improvement of materials.

[0003] While currently available technologies and methods, such as bend testers, strain gauge bend testers, optical bend gauges, electronic bend gauges, three-dimensional bend measurement systems, high-speed cameras, and image analysis systems, are capable of measuring the bending behavior of slender hoses, they have significant limitations. Bend testers are typically large, difficult to carry and operate, and require precise specimen installation and fixation. Optical bend gauges have strict requirements for lighting and environmental conditions, and optical measurement systems can be affected by factors such as lens distortion and optical noise. Electronic bend gauges can be affected by electromagnetic interference and temperature fluctuations, and typically require signal amplification and processing, which can lead to signal distortion and increased noise. These methods are often complex to operate, lack high accuracy, and cannot fully reflect the dynamic bending behavior of slender hoses. Utility Model Content

[0004] In order to solve the above problems, the technical solution adopted by the present utility model is:

[0005] A device for simulating dynamic bending behavior, comprising:

[0006] A base frame, wherein a vertical fixing component is provided in the middle of the base frame;

[0007] a bending simulation member fixed on the vertical fixing member;

[0008] a bending direction control component fixed to the base frame and located outside the bending simulation member;

[0009] a bending angle control component, the bending angle control component being fixed to the bending direction control component and connected to the bending simulation component to achieve control of the bending angle and bending direction of the bending simulation component;

[0010] A console is fixed on the base frame and is electrically connected to the bending direction control component and the bending angle control component.

[0011] Furthermore, the base frame includes a base, a first servo motor is provided at the lower part of the base, and is connected to a power plug through a built-in relay in the base; the vertical fixing component includes a fixed base fixed in the middle of the base, a vertical sleeve is provided on the fixed base, and a reducing rubber clamp connected to the bending simulation part is provided on the top of the vertical sleeve; the fixed base and the vertical sleeve, and the fixed base and the first servo motor are all nested.

[0012] Furthermore, the vertical sleeve has a built-in lifting screw, the first servo motor is connected to the lifting screw, and the height of the fixed base is greater than the height of the vertical sleeve.

[0013] Furthermore, the bending simulation component includes a metal fixing section, a bending rod and a clamp arranged in sequence from bottom to top, and the metal fixing section is connected to the variable diameter rubber clamp.

[0014] Furthermore, the metal fixing section includes a disc and a round rod fixed to the lower part of the disc, a groove connected to the bent rod is provided in the middle of the disc, and the round rod is connected to the variable diameter rubber clamp.

[0015] Furthermore, the bending direction control component includes a ring rail fixed on the base, the ring rail is a gear rail, a slide with a gear is provided on the gear rail, the gear on the slide is engaged with the gear rail for transmission, a second servo motor is fixed on the slide, and the output end of the second servo motor is connected to the gear drive; a plurality of metal brackets are evenly fixed on the lower part of the ring rail, and the metal brackets are fixed on the base.

[0016] Furthermore, the bending angle control component includes a third servo motor arranged on the slide, a synchronous belt high-speed precision linear slide module installed on the third servo motor, one end of the ball screw is rotatably connected to the synchronous belt high-speed precision linear slide module, and the other end is connected to the output end of the third servo motor, a slide is connected to the ball screw, a pull box is fixed on one side of the slide, the outer end of the pull box is connected to one end of the double-end lock, and the other end of the double-end lock is connected to the clamp.

[0017] Furthermore, the console is provided with a touch screen display and a PLC controller, and the PLC controller is electrically connected to a power switch, the first servo motor, the second servo motor and the third servo motor.

[0018] Beneficial effects of the utility model:

[0019] (1) Precise control and testing of the dynamic bending direction and angle of the bending simulation part: By combining the base frame, bending direction test component and bending angle test component, precise control of the bending simulation part in multiple dimensions and accurate simulation of the dynamic bending behavior are achieved.

[0020] (2) Unified test standards to adapt to bending simulation parts of different diameters: Through the adjustable telescopic diameter adjuster and the variable diameter rubber clamp, the device can fix and test bending simulation parts of different diameters, which increases the adaptability and flexibility of the device.

[0021] (3) Simplify the operation process and reduce the complexity of use: Integrate automated control elements to simplify the complex manual operation steps in traditional bending tests. The overall operation relies on the console, making the entire testing process more efficient and convenient.

[0022] (4) Unique bending test form: The operation form of fixing one end and bending the other end is more in line with the operation possibilities in certain practical applications and expands its application range.

[0023] (5) Improve the accuracy and repeatability of data: Due to the use of sophisticated electromechanical systems and accurate control systems, high accuracy and good repeatability of bending test data are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a two-dimensional main view of the overall structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the bending simulation part of the utility model;

[0027] Figure 4 This is a schematic diagram of the connection between the base frame and the console of the utility model;

[0028] Figure 5 It is a schematic diagram of the bending direction control component of the utility model;

[0029] Figure 6 It is a schematic diagram of the bending angle control component of the utility model;

[0030] Among them, 1-1, metal fixed section; 1-2, bent rod; 1-3, clamp; 2-1, first servo motor; 2-2, base; 2-3, vertical fixing component; 2-4, fixed base; 2-5, vertical sleeve; 2-6, variable diameter rubber clamp; 3-1, touch screen display; 3-2, power switch; 3-3, power plug; 4-1, ring rail; 4-2, slide; 4-3, second servo motor; 4-4, metal bracket; 5-1, synchronous belt high-speed precision linear slide module; 5-2, slide; 5-3, third servo motor; 5-4, ball screw; 5-5, pull box; 5-6, double-end lock. DETAILED DESCRIPTION

[0031] The present invention provides a device for simulating dynamic bending behavior. The technical solution of the present invention is described in detail below with reference to the accompanying drawings to make it easier to understand and grasp.

[0032] Example 1

[0033] refer to Figures 1-6 , a device for simulating dynamic bending behavior, comprising:

[0034] A base frame, wherein a vertical fixing component 2-3 is provided in the middle of the base frame;

[0035] A bending simulation piece, the bending simulation piece is fixed on the vertical fixing component 2-3;

[0036] a bending direction control component, the bending direction control component being fixed on the base frame and located outside the bending simulation piece;

[0037] A bending angle control component is fixed to the bending direction control component and connected to the bending simulation component to achieve control of the bending angle and bending direction of the bending simulation component;

[0038] The console is fixed on the base frame and is electrically connected to the bending direction control component and the bending angle control component.

[0039] In this embodiment, the base frame includes a base 2-2, a first servo motor 2-1 is provided at the lower part of the base 2-2, and is connected to the power plug 3-3 through the built-in relay of the base 2-2; the vertical fixing component 2-3 includes a fixed base 2-4 fixed to the middle part of the base 2-2, a vertical sleeve 2-5 is provided on the fixed base 2-4, and a reducing rubber clamp 2-6 connected to the bending simulation part is provided on the top of the vertical sleeve 2-5. The fixed base 2-4 and the vertical sleeve 2-5, and the fixed base and the first servo motor 2-1 are all nested. The first servo motor 2-1 drives the vertical sleeve 2-5 to rise or fall on the fixed base 2-4, which is convenient for adjusting the height of different bending simulation parts and has good applicability.

[0040] Among them, the variable diameter rubber clamp 2-6 includes a rubber body, a clamp assembly and a fastening device. The rubber body is elastic and can adaptively deform according to the diameter change of the bending simulation part; the clamp assembly includes two semicircular clamp pieces, which can fit tightly around the bending simulation part. The fastening device is used to tightly fix the two clamp pieces together, thereby fixing the bending simulation part. The upper and lower clamp pieces of different diameters can match bending simulation parts of different diameters. The bending simulation part is adjusted and fixed by adjusting the tight fit of the clamp pieces.

[0041] In this embodiment, the vertical sleeve 2-5 has a built-in lifting screw, and the first servo motor 2-1 is connected to the lifting screw. The first servo motor 2-1 lifts the lifting screw, so that the vertical sleeve 2-5 slides up and down in the fixed base 2-4. The height of the fixed base 2-4 is greater than the height of the vertical sleeve 2-5. Not only is the safety good, but the fixed base 2-4 also has the function of height limiting.

[0042] In this embodiment, the bending simulation component includes a metal fixing section 1-1, a bending rod 1-2 and a clamp 1-3 arranged in sequence from bottom to top. The metal fixing section 1-1 is connected to a variable diameter rubber clamp 2-6.

[0043] Among them, the clamping head 1-3 is a conical shape with a frustum. The diameter of the frustum is consistent with the diameter of the metal fixed end 1-1, and the thickness is 0.8-6cm. The lower part of the frustum is provided with a connecting hole adapted to the bent rod 1-2. The depth of the connecting hole is 0.4-5cm. The top of the cone corresponds to the center of the frustum, and the height of the cone is 1-6cm.

[0044] The bending rods are made of rubber, silicone, PVC tube, PU tube, with a length of 15-30 cm, a cross-sectional shape of circle, triangle, square, rectangle, polygon, multi-leaf, a cross-sectional diameter of 0.5-5 cm, and a surface of smooth, frosted or striped texture.

[0045] In this embodiment, the metal fixing section 1-1 includes a disc and a round rod fixed to the lower part of the disc. A groove connected to the bent rod 1-2 is provided in the middle of the disc, and the round rod is connected to the variable diameter rubber clamp 2-6.

[0046] The thickness of the disc is 0.8-6 cm and the diameter is 1-6 cm; the size of the groove is adapted to the size of the curved rod 1-2, and the depth of the groove is 0.4-5 cm; the length of the round rod is 5 cm and the diameter is 5 cm.

[0047] In this embodiment, the bending direction control component includes a ring rail 4-1 fixed on the base 2-2, the ring rail 4-1 is a gear rail, and a slide 4-2 with a gear is provided on the gear rail. The gear on the slide 4-2 is engaged with the gear rail for transmission, and a second servo motor 4-3 is fixed on the slide 4-2. The output end of the second servo motor 4-3 is connected to the gear drive, and the gear is engaged and transmitted along the gear rail to realize the arc movement of the slide 4-2; a plurality of metal brackets 4-4 are evenly fixed on the lower part of the ring rail 4-1, and the metal brackets 4-4 are fixed on the base 2-2 to realize overall support and fixation.

[0048] Among them, the ring rail 4-1 is set in an integrated manner, with a diameter of 200-1000mm, the number of teeth on the large ring on the slide 4-2 is 112-280, and the number of teeth on the gear is 16-40.

[0049] In this embodiment, the bending angle control component includes a third servo motor 5-3 provided on the slide 4-2, a synchronous belt high-speed precision linear slide module 5-1 installed on the third servo motor 5-3, one end of the ball screw 5-4 is rotatably connected to the synchronous belt high-speed precision linear slide module 5-1, and the other end is connected to the output end of the third servo motor 5-3, a slide 5-2 is connected to the ball screw 5-4, a pull box 5-5 is fixed on one side of the slide 5-2, the outer end of the pull box 5-5 is connected to one end of the double-end lock 5-6, and the other end of the double-end lock 5-6 is connected to the clamp 1-3, the bending direction control component drives the bending angle control component to the appropriate direction, the third servo motor 5-3 drives the ball screw 5-4 to rotate, the slide 5-2 moves up and down along the ball screw 5-4, and the pull box 5-5 connected to the slide 5-2 pulls the clamp 1-3 through the double-end lock 5-6 to achieve precise adjustment of the bending degree of the bending simulation part.

[0050] Among them, a steel wire rope is provided in the wire pulling box 5-5, and the gathering end of the steel wire rope is wound and stored on the winding pulley in the wire pulling box 5-5. The pulling end of the steel wire rope is connected to the clamp 1-3. The wire diameter of the steel wire rope is 0.45-3mm, and the telescopic wire length is 40-150cm. The pulling end pulls the wire to drive the internal winding pulley to move. The pulling end and the gathering end are both equipped with double-end locks. The coil length and the size of the gathering end coil can be adjusted by opening the double-end lock using the equipped lock copper column.

[0051] In this embodiment, a touch screen display 3-1 and a PLC controller are provided on the console. The PLC controller is electrically connected to the power switch 3-2, the first servo motor 2-1, the second servo motor 4-3, and the third servo motor 5-3. The PLC controller is connected to the power switch and can regulate the power supply of the console and the first servo motor 2-1, the second servo motor 4-3, and the third servo motor 5-3; the PLC controller is connected to the first servo motor 2-1 to control the lifting and lowering of the vertical sleeve; the PLC controller is connected to the second servo motor 4-3 to control the sliding rate, number of cycles and angle of the slide 4-2 on the ring rail 4-1 to control the bending direction of the bending simulation part; the PLC controller is connected to the third servo motor 5-3 to control the up and down movement distance, speed and number of cycles of the slide 5-2 along the ball screw 5-4.

[0052] Example 2

[0053] A method for using a device for dynamic bending behavior simulation is the method for using the device for dynamic bending behavior simulation provided in Example 1, and the method comprises the following steps:

[0054] S10, screening the bending simulation parts to be tested and selecting the appropriate wire rope diameter according to the test requirements;

[0055] S20, assembling the bending simulation part, inserting the lower round rod of the metal fixed end 1-1 into the reducing rubber clamp 2-6, and tightening the reducing rubber clamp 2-6 to fix the metal fixed end 1-1 of the bending simulation part;

[0056] S30, install the wire box 5-5 on the slide 5-2, connect the wire rope to the bending simulation component clamp 1-3 through the double-end lock 5-6, and adjust the length of the wire rope to match the test requirements;

[0057] S40, turn on the power;

[0058] S50. Set the telescopic length of the vertical fixing component 2-3 on the touch screen display 3-1 of the console to match the bending simulation piece to be tested; set the bending direction control component to adjust the initial position of the slide 4-2 on the ring rail 4-1 and the sliding rate, number of cycles, two-way pause time, sliding angle and sliding direction of the slide 4-2 to achieve precise control of the bending direction; set the bending angle control component to adjust the initial position of the synchronous belt high-speed precision linear slide module 5-1, and set the sliding distance, sliding speed, two-way pause time, number of cycles and sliding direction of the slide 5-2 to accurately adjust the experimental bending angle;

[0059] S60, start the dynamic bending test, adjust various parameters according to the experimental requirements and repeat the test;

[0060] S70, turn off the power;

[0061] S80, unlock the double-end lock 5-6, and remove the bending simulation piece and the wire box 5-5;

[0062] S90. Combined with multiple test records, the dynamic bending behavior of the bending simulation parts is analyzed in detail.

[0063] The above fully describes the technical solution of the present invention. It should be noted that the specific implementation methods of the present invention are not limited to the above description. All technical solutions formed by ordinary technicians in this field using equivalent or equivalent transformations in structure, method or function based on the spirit of the present invention fall within the scope of protection of the present invention.

Claims

1. A device for simulating dynamic bending behavior, characterized in that: include: A base frame, wherein a vertical fixing component is provided in the middle of the base frame; a bending simulation member fixed on the vertical fixing member; a bending direction control component fixed to the base frame and located outside the bending simulation member; a bending angle control component, the bending angle control component being fixed to the bending direction control component and connected to the bending simulation component to achieve control of the bending angle and bending direction of the bending simulation component; A console is fixed on the base frame and is electrically connected to the bending direction control component and the bending angle control component.

2. The device for simulating dynamic bending behavior according to claim 1, characterized in that The base frame includes a base, a first servo motor is provided at the lower part of the base, and is connected to a power plug through a built-in relay in the base; the vertical fixing component includes a fixed base fixed in the middle of the base, a vertical sleeve is provided on the fixed base, and a reducing rubber clamp connected to the bending simulation part is provided on the top of the vertical sleeve; the fixed base and the vertical sleeve, and the fixed base and the first servo motor are all nested.

3. The device for simulating dynamic bending behavior according to claim 2, characterized in that: The vertical sleeve has a built-in lifting screw, the first servo motor is connected to the lifting screw, and the height of the fixed base is greater than the height of the vertical sleeve.

4. The device for simulating dynamic bending behavior according to claim 3, characterized in that: The bending simulation part includes a metal fixing section, a bending rod and a clamping head which are arranged in sequence from bottom to top. The metal fixing section is connected to the diameter-reducing rubber clamp.

5. The device for simulating dynamic bending behavior according to claim 4, characterized in that: The metal fixing section includes a disc and a round rod fixed to the lower part of the disc. A groove connected to the bent rod is provided in the middle of the disc, and the round rod is connected to the variable diameter rubber clamp.

6. The device for simulating dynamic bending behavior according to claim 5, characterized in that: The bending direction control component includes a ring track fixed on the base, the ring track is a gear track, a slide with a gear is provided on the gear track, the gear on the slide is engaged with the gear track for transmission, a second servo motor is fixed on the slide, and the output end of the second servo motor is connected to the gear drive; a plurality of metal brackets are evenly fixed on the lower part of the ring track, and the metal brackets are fixed on the base.

7. The device for simulating dynamic bending behavior according to claim 6, characterized in that: The bending angle control component includes a third servo motor arranged on the slide, a synchronous belt high-speed precision linear slide module installed on the third servo motor, one end of the ball screw is rotatably connected to the synchronous belt high-speed precision linear slide module, and the other end is connected to the output end of the third servo motor, a slide is connected to the ball screw, a wire pull box is fixed on one side of the slide, the outer end of the wire pull box is connected to one end of the double-end lock, and the other end of the double-end lock is connected to the clamp.

8. The device for simulating dynamic bending behavior according to claim 7, characterized in that: The console is provided with a touch screen display and a PLC controller, and the PLC controller is electrically connected to a power switch, the first servo motor, the second servo motor, and the third servo motor.

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